Merge pull request 'Archive completed openspec change new-raceplanner-app' (#2) from feature/new-raceplanner-app into main

Reviewed-on: #2

backend/Controllers/AnnouncementsController.cs

@@ -0,0 +1,252 @@
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+using RacePlannerApi.Data;
+using RacePlannerApi.DTOs;
+using RacePlannerApi.Models;
+
+namespace RacePlannerApi.Controllers;
+
+[ApiController]
+[Route("api/[controller]")]
+[Authorize]
+public class AnnouncementsController : ControllerBase
+{
+    private readonly RacePlannerDbContext _context;
+
+    public AnnouncementsController(RacePlannerDbContext context)
+    {
+        _context = context;
+    }
+
+    [HttpPost]
+    [Authorize(Roles = "Organizer")]
+    public async Task<ActionResult<AnnouncementDto>> CreateAnnouncement(CreateAnnouncementRequest request)
+    {
+        var userId = GetCurrentUserId();
+        if (userId == null)
+        {
+            return Unauthorized();
+        }
+
+        // Verify event exists and user is organizer
+        var eventEntity = await _context.Events
+            .FirstOrDefaultAsync(e => e.Id == request.EventId);
+
+        if (eventEntity == null)
+        {
+            return NotFound(new { error = "Event not found" });
+        }
+
+        if (eventEntity.OrganizerId != userId.Value)
+        {
+            return Forbid();
+        }
+
+        var announcement = new Announcement
+        {
+            EventId = request.EventId,
+            Title = request.Title,
+            Content = request.Content,
+            AuthorId = userId.Value,
+            IsPublished = true
+        };
+
+        _context.Announcements.Add(announcement);
+        await _context.SaveChangesAsync();
+
+        // Load related data
+        await _context.Entry(announcement)
+            .Reference(a => a.Event)
+            .LoadAsync();
+        await _context.Entry(announcement)
+            .Reference(a => a.Author)
+            .LoadAsync();
+
+        // TODO: Send notifications to registered participants (Task 7.7)
+
+        return CreatedAtAction(
+            nameof(GetAnnouncement),
+            new { id = announcement.Id },
+            MapToAnnouncementDto(announcement));
+    }
+
+    [HttpGet("{id}")]
+    public async Task<ActionResult<AnnouncementDto>> GetAnnouncement(Guid id)
+    {
+        var announcement = await _context.Announcements
+            .Include(a => a.Event)
+            .Include(a => a.Author)
+            .FirstOrDefaultAsync(a => a.Id == id);
+
+        if (announcement == null)
+        {
+            return NotFound();
+        }
+
+        // Only show published announcements to participants
+        if (!announcement.IsPublished)
+        {
+            var userId = GetCurrentUserId();
+            if (userId == null || announcement.Event.OrganizerId != userId.Value)
+            {
+                return NotFound();
+            }
+        }
+
+        return Ok(MapToAnnouncementDto(announcement));
+    }
+
+    [HttpGet("event/{eventId}")]
+    public async Task<ActionResult<IEnumerable<AnnouncementDto>>> GetEventAnnouncements(Guid eventId)
+    {
+        var userId = GetCurrentUserId();
+        var isOrganizer = false;
+
+        if (userId != null)
+        {
+            isOrganizer = await _context.Events
+                .AnyAsync(e => e.Id == eventId && e.OrganizerId == userId.Value);
+        }
+
+        var query = _context.Announcements
+            .Include(a => a.Event)
+            .Include(a => a.Author)
+            .Where(a => a.EventId == eventId)
+            .AsQueryable();
+
+        // Only show published announcements to non-organizers
+        if (!isOrganizer)
+        {
+            query = query.Where(a => a.IsPublished);
+        }
+
+        var announcements = await query
+            .OrderByDescending(a => a.CreatedAt)
+            .ToListAsync();
+
+        return Ok(announcements.Select(MapToAnnouncementDto));
+    }
+
+    [HttpPut("{id}")]
+    [Authorize(Roles = "Organizer")]
+    public async Task<ActionResult<AnnouncementDto>> UpdateAnnouncement(Guid id, UpdateAnnouncementRequest request)
+    {
+        var userId = GetCurrentUserId();
+        if (userId == null)
+        {
+            return Unauthorized();
+        }
+
+        var announcement = await _context.Announcements
+            .Include(a => a.Event)
+            .Include(a => a.Author)
+            .FirstOrDefaultAsync(a => a.Id == id);
+
+        if (announcement == null)
+        {
+            return NotFound();
+        }
+
+        // Only organizer can update
+        if (announcement.Event.OrganizerId != userId.Value)
+        {
+            return Forbid();
+        }
+
+        // Update fields
+        if (request.Title != null) announcement.Title = request.Title;
+        if (request.Content != null) announcement.Content = request.Content;
+        if (request.IsPublished.HasValue) announcement.IsPublished = request.IsPublished.Value;
+
+        announcement.UpdatedAt = DateTime.UtcNow;
+
+        await _context.SaveChangesAsync();
+
+        return Ok(MapToAnnouncementDto(announcement));
+    }
+
+    [HttpDelete("{id}")]
+    [Authorize(Roles = "Organizer")]
+    public async Task<IActionResult> DeleteAnnouncement(Guid id)
+    {
+        var userId = GetCurrentUserId();
+        if (userId == null)
+        {
+            return Unauthorized();
+        }
+
+        var announcement = await _context.Announcements
+            .Include(a => a.Event)
+            .FirstOrDefaultAsync(a => a.Id == id);
+
+        if (announcement == null)
+        {
+            return NotFound();
+        }
+
+        // Only organizer can delete
+        if (announcement.Event.OrganizerId != userId.Value)
+        {
+            return Forbid();
+        }
+
+        _context.Announcements.Remove(announcement);
+        await _context.SaveChangesAsync();
+
+        return NoContent();
+    }
+
+    [HttpGet("my-announcements")]
+    public async Task<ActionResult<IEnumerable<AnnouncementDto>>> GetMyAnnouncements()
+    {
+        var userId = GetCurrentUserId();
+        if (userId == null)
+        {
+            return Unauthorized();
+        }
+
+        // Get user registrations
+        var userRegistrationEventIds = await _context.Registrations
+            .Where(r => r.ParticipantId == userId.Value && r.Status != RegistrationStatus.Cancelled)
+            .Select(r => r.EventId)
+            .ToListAsync();
+
+        // Get announcements for those events
+        var announcements = await _context.Announcements
+            .Include(a => a.Event)
+            .Include(a => a.Author)
+            .Where(a => userRegistrationEventIds.Contains(a.EventId) && a.IsPublished)
+            .OrderByDescending(a => a.CreatedAt)
+            .ToListAsync();
+
+        return Ok(announcements.Select(MapToAnnouncementDto));
+    }
+
+    private Guid? GetCurrentUserId()
+    {
+        var userIdClaim = User.FindFirst(System.Security.Claims.ClaimTypes.NameIdentifier)?.Value;
+        if (Guid.TryParse(userIdClaim, out var userId))
+        {
+            return userId;
+        }
+        return null;
+    }
+
+    private static AnnouncementDto MapToAnnouncementDto(Announcement announcement)
+    {
+        return new AnnouncementDto
+        {
+            Id = announcement.Id,
+            EventId = announcement.EventId,
+            EventName = announcement.Event?.Name ?? string.Empty,
+            Title = announcement.Title,
+            Content = announcement.Content,
+            AuthorId = announcement.AuthorId,
+            AuthorName = announcement.Author?.Name ?? string.Empty,
+            CreatedAt = announcement.CreatedAt,
+            UpdatedAt = announcement.UpdatedAt,
+            IsPublished = announcement.IsPublished
+        };
+    }
+}

backend/Controllers/DashboardController.cs

@@ -0,0 +1,167 @@
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+using RacePlannerApi.Data;
+using RacePlannerApi.DTOs;
+using RacePlannerApi.Models;
+
+namespace RacePlannerApi.Controllers;
+
+[ApiController]
+[Route("api/[controller]")]
+[Authorize]
+public class DashboardController : ControllerBase
+{
+    private readonly RacePlannerDbContext _context;
+
+    public DashboardController(RacePlannerDbContext context)
+    {
+        _context = context;
+    }
+
+    [HttpGet("organizer")]
+    [Authorize(Roles = "Organizer")]
+    public async Task<ActionResult<OrganizerDashboardDto>> GetOrganizerDashboard()
+    {
+        var userId = GetCurrentUserId();
+        if (userId == null)
+        {
+            return Unauthorized();
+        }
+
+        var events = await _context.Events
+            .Include(e => e.Registrations)
+            .ThenInclude(r => r.Payments)
+            .Where(e => e.OrganizerId == userId.Value)
+            .ToListAsync();
+
+        var totalEvents = events.Count;
+        var publishedEvents = events.Count(e => e.Status == EventStatus.Published);
+        var draftEvents = events.Count(e => e.Status == EventStatus.Draft);
+
+        var allRegistrations = events.SelectMany(e => e.Registrations).ToList();
+        var totalRegistrations = allRegistrations.Count;
+        var pendingRegistrations = allRegistrations.Count(r => r.Status == RegistrationStatus.Pending);
+        var confirmedRegistrations = allRegistrations.Count(r => r.Status == RegistrationStatus.Confirmed);
+        var cancelledRegistrations = allRegistrations.Count(r => r.Status == RegistrationStatus.Cancelled);
+
+        var totalRevenue = allRegistrations
+            .SelectMany(r => r.Payments)
+            .Sum(p => p.Amount);
+
+        var upcomingEvents = events
+            .Where(e => e.EventDate >= DateTime.UtcNow && e.EventDate <= DateTime.UtcNow.AddDays(30))
+            .OrderBy(e => e.EventDate)
+            .Take(5)
+            .Select(e => new EventSummaryDto
+            {
+                Id = e.Id,
+                Name = e.Name,
+                EventDate = e.EventDate,
+                Location = e.Location,
+                RegistrationCount = e.Registrations.Count(r => r.Status != RegistrationStatus.Cancelled),
+                MaxParticipants = e.MaxParticipants
+            })
+            .ToList();
+
+        var eventsNearCapacity = events
+            .Where(e => e.MaxParticipants.HasValue && e.Status == EventStatus.Published)
+            .Select(e => new EventCapacityDto
+            {
+                Id = e.Id,
+                Name = e.Name,
+                EventDate = e.EventDate,
+                RegistrationCount = e.Registrations.Count(r => r.Status != RegistrationStatus.Cancelled),
+                MaxParticipants = e.MaxParticipants
+            })
+            .Where(e => e.CapacityPercentage >= 80)
+            .OrderByDescending(e => e.CapacityPercentage)
+            .Take(5)
+            .ToList();
+
+        var dashboard = new OrganizerDashboardDto
+        {
+            TotalEvents = totalEvents,
+            PublishedEvents = publishedEvents,
+            DraftEvents = draftEvents,
+            TotalRegistrations = totalRegistrations,
+            PendingRegistrations = pendingRegistrations,
+            ConfirmedRegistrations = confirmedRegistrations,
+            CancelledRegistrations = cancelledRegistrations,
+            TotalRevenue = totalRevenue,
+            UpcomingEvents = upcomingEvents,
+            EventsNearCapacity = eventsNearCapacity
+        };
+
+        return Ok(dashboard);
+    }
+
+    [HttpGet("participant")]
+    public async Task<ActionResult<ParticipantDashboardDto>> GetParticipantDashboard()
+    {
+        var userId = GetCurrentUserId();
+        if (userId == null)
+        {
+            return Unauthorized();
+        }
+
+        var registrations = await _context.Registrations
+            .Include(r => r.Event)
+            .Where(r => r.ParticipantId == userId.Value)
+            .ToListAsync();
+
+        var totalRegistrations = registrations.Count;
+        var upcomingEvents = registrations.Count(r => r.Event.EventDate >= DateTime.UtcNow && r.Status != RegistrationStatus.Cancelled);
+        var completedEvents = registrations.Count(r => r.Event.EventDate < DateTime.UtcNow && r.Status == RegistrationStatus.Completed);
+        var cancelledRegistrations = registrations.Count(r => r.Status == RegistrationStatus.Cancelled);
+
+        var registrationSummaries = registrations
+            .OrderByDescending(r => r.Event.EventDate)
+            .Take(10)
+            .Select(r => new RegistrationSummaryDto
+            {
+                Id = r.Id,
+                EventId = r.EventId,
+                EventName = r.Event.Name,
+                EventDate = r.Event.EventDate,
+                Status = r.Status.ToString(),
+                RegisteredAt = r.CreatedAt
+            })
+            .ToList();
+
+        var upcomingEventList = registrations
+            .Where(r => r.Event.EventDate >= DateTime.UtcNow && r.Status != RegistrationStatus.Cancelled)
+            .OrderBy(r => r.Event.EventDate)
+            .Take(5)
+            .Select(r => new UpcomingEventDto
+            {
+                Id = r.EventId,
+                Name = r.Event.Name,
+                EventDate = r.Event.EventDate,
+                Location = r.Event.Location
+            })
+            .ToList();
+
+        var dashboard = new ParticipantDashboardDto
+        {
+            TotalRegistrations = totalRegistrations,
+            UpcomingEvents = upcomingEvents,
+            CompletedEvents = completedEvents,
+            CancelledRegistrations = cancelledRegistrations,
+            MyRegistrations = registrationSummaries,
+            UpcomingEventList = upcomingEventList
+        };
+
+        return Ok(dashboard);
+    }
+
+    private Guid? GetCurrentUserId()
+    {
+        var userIdClaim = User.FindFirst(System.Security.Claims.ClaimTypes.NameIdentifier)?.Value;
+        if (Guid.TryParse(userIdClaim, out var userId))
+        {
+            return userId;
+        }
+        return null;
+    }
+}

backend/Controllers/EventsController.cs

@@ -0,0 +1,242 @@
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+using RacePlannerApi.Data;
+using RacePlannerApi.DTOs;
+using RacePlannerApi.Models;
+
+namespace RacePlannerApi.Controllers;
+
+[ApiController]
+[Route("api/[controller]")]
+[Authorize]
+public class EventsController : ControllerBase
+{
+    private readonly RacePlannerDbContext _context;
+
+    public EventsController(RacePlannerDbContext context)
+    {
+        _context = context;
+    }
+
+    [HttpPost]
+    [Authorize(Roles = "Organizer")]
+    public async Task<ActionResult<EventDto>> CreateEvent(CreateEventRequest request)
+    {
+        var userId = GetCurrentUserId();
+        if (userId == null)
+        {
+            return Unauthorized();
+        }
+
+        var eventEntity = new Event
+        {
+            Name = request.Name,
+            Description = request.Description,
+            EventDate = request.EventDate,
+            Location = request.Location,
+            Category = request.Category,
+            Tags = request.Tags ?? new List<string>(),
+            MaxParticipants = request.MaxParticipants,
+            OrganizerId = userId.Value,
+            Status = EventStatus.Draft
+        };
+
+        _context.Events.Add(eventEntity);
+        await _context.SaveChangesAsync();
+
+        // Load organizer for response
+        await _context.Entry(eventEntity).Reference(e => e.Organizer).LoadAsync();
+
+        return CreatedAtAction(
+            nameof(GetEvent),
+            new { id = eventEntity.Id },
+            MapToEventDto(eventEntity));
+    }
+
+    [HttpGet]
+    [AllowAnonymous]
+    public async Task<ActionResult<IEnumerable<EventDto>>> GetEvents(
+        [FromQuery] EventFilterRequest? filter = null)
+    {
+        var query = _context.Events
+            .Include(e => e.Organizer)
+            .Include(e => e.Registrations)
+            .AsQueryable();
+
+        // Apply filters
+        if (filter?.Category != null)
+        {
+            query = query.Where(e => e.Category == filter.Category);
+        }
+
+        if (filter?.Tags != null && filter.Tags.Any())
+        {
+            query = query.Where(e => e.Tags.Any(t => filter.Tags.Contains(t)));
+        }
+
+        if (filter?.FromDate != null)
+        {
+            query = query.Where(e => e.EventDate >= filter.FromDate);
+        }
+
+        if (filter?.ToDate != null)
+        {
+            query = query.Where(e => e.EventDate <= filter.ToDate);
+        }
+
+        if (filter?.Status != null && Enum.TryParse<EventStatus>(filter.Status, out var status))
+        {
+            query = query.Where(e => e.Status == status);
+        }
+
+        if (filter?.OrganizerId != null)
+        {
+            query = query.Where(e => e.OrganizerId == filter.OrganizerId);
+        }
+
+        // Default to showing published events only for anonymous users
+        if (!User.Identity?.IsAuthenticated ?? true)
+        {
+            query = query.Where(e => e.Status == EventStatus.Published);
+        }
+
+        var events = await query
+            .OrderBy(e => e.EventDate)
+            .ToListAsync();
+
+        return Ok(events.Select(MapToEventDto));
+    }
+
+    [HttpGet("{id}")]
+    [AllowAnonymous]
+    public async Task<ActionResult<EventDto>> GetEvent(Guid id)
+    {
+        var eventEntity = await _context.Events
+            .Include(e => e.Organizer)
+            .Include(e => e.Registrations)
+            .FirstOrDefaultAsync(e => e.Id == id);
+
+        if (eventEntity == null)
+        {
+            return NotFound();
+        }
+
+        // Draft events only visible to organizers
+        if (eventEntity.Status == EventStatus.Draft)
+        {
+            var userId = GetCurrentUserId();
+            if (userId == null || eventEntity.OrganizerId != userId)
+            {
+                return NotFound();
+            }
+        }
+
+        return Ok(MapToEventDto(eventEntity));
+    }
+
+    [HttpPut("{id}")]
+    [Authorize(Roles = "Organizer")]
+    public async Task<ActionResult<EventDto>> UpdateEvent(Guid id, UpdateEventRequest request)
+    {
+        var userId = GetCurrentUserId();
+        if (userId == null)
+        {
+            return Unauthorized();
+        }
+
+        var eventEntity = await _context.Events
+            .Include(e => e.Organizer)
+            .FirstOrDefaultAsync(e => e.Id == id);
+
+        if (eventEntity == null)
+        {
+            return NotFound();
+        }
+
+        // Only organizer can update their event
+        if (eventEntity.OrganizerId != userId)
+        {
+            return Forbid();
+        }
+
+        // Update fields
+        if (request.Name != null) eventEntity.Name = request.Name;
+        if (request.Description != null) eventEntity.Description = request.Description;
+        if (request.EventDate != null) eventEntity.EventDate = request.EventDate.Value;
+        if (request.Location != null) eventEntity.Location = request.Location;
+        if (request.Status != null) eventEntity.Status = request.Status.Value;
+        if (request.Category != null) eventEntity.Category = request.Category;
+        if (request.Tags != null) eventEntity.Tags = request.Tags;
+        if (request.MaxParticipants != null) eventEntity.MaxParticipants = request.MaxParticipants;
+
+        eventEntity.UpdatedAt = DateTime.UtcNow;
+
+        await _context.SaveChangesAsync();
+
+        return Ok(MapToEventDto(eventEntity));
+    }
+
+    [HttpDelete("{id}")]
+    [Authorize(Roles = "Organizer")]
+    public async Task<IActionResult> DeleteEvent(Guid id)
+    {
+        var userId = GetCurrentUserId();
+        if (userId == null)
+        {
+            return Unauthorized();
+        }
+
+        var eventEntity = await _context.Events.FindAsync(id);
+
+        if (eventEntity == null)
+        {
+            return NotFound();
+        }
+
+        if (eventEntity.OrganizerId != userId)
+        {
+            return Forbid();
+        }
+
+        _context.Events.Remove(eventEntity);
+        await _context.SaveChangesAsync();
+
+        return NoContent();
+    }
+
+    private Guid? GetCurrentUserId()
+    {
+        var userIdClaim = User.FindFirst(System.Security.Claims.ClaimTypes.NameIdentifier)?.Value;
+        if (Guid.TryParse(userIdClaim, out var userId))
+        {
+            return userId;
+        }
+        return null;
+    }
+
+    private static EventDto MapToEventDto(Event eventEntity)
+    {
+        return new EventDto
+        {
+            Id = eventEntity.Id,
+            Name = eventEntity.Name,
+            Description = eventEntity.Description,
+            EventDate = eventEntity.EventDate,
+            Location = eventEntity.Location,
+            Status = eventEntity.Status.ToString(),
+            Category = eventEntity.Category,
+            Tags = eventEntity.Tags,
+            MaxParticipants = eventEntity.MaxParticipants,
+            CurrentRegistrations = eventEntity.Registrations?.Count ?? 0,
+            CreatedAt = eventEntity.CreatedAt,
+            UpdatedAt = eventEntity.UpdatedAt,
+            Organizer = new UserSummaryDto
+            {
+                Id = eventEntity.Organizer.Id,
+                Name = eventEntity.Organizer.Name,
+                Email = eventEntity.Organizer.Email
+            }
+        };
+    }
+}

backend/Controllers/PaymentsController.cs

@@ -0,0 +1,258 @@
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+using RacePlannerApi.Data;
+using RacePlannerApi.DTOs;
+using RacePlannerApi.Models;
+
+namespace RacePlannerApi.Controllers;
+
+[ApiController]
+[Route("api/[controller]")]
+[Authorize]
+public class PaymentsController : ControllerBase
+{
+    private readonly RacePlannerDbContext _context;
+
+    public PaymentsController(RacePlannerDbContext context)
+    {
+        _context = context;
+    }
+
+    [HttpPost]
+    [Authorize(Roles = "Organizer")]
+    public async Task<ActionResult<PaymentDto>> RecordPayment(CreatePaymentRequest request)
+    {
+        var userId = GetCurrentUserId();
+        if (userId == null)
+        {
+            return Unauthorized();
+        }
+
+        // Load registration with event
+        var registration = await _context.Registrations
+            .Include(r => r.Event)
+            .FirstOrDefaultAsync(r => r.Id == request.RegistrationId);
+
+        if (registration == null)
+        {
+            return NotFound(new { error = "Registration not found" });
+        }
+
+        // Verify user is organizer of the event
+        if (registration.Event.OrganizerId != userId.Value)
+        {
+            return Forbid();
+        }
+
+        // Check registration is not cancelled
+        if (registration.Status == RegistrationStatus.Cancelled)
+        {
+            return BadRequest(new { error = "Cannot record payment for cancelled registration" });
+        }
+
+        var payment = new Payment
+        {
+            RegistrationId = request.RegistrationId,
+            Amount = request.Amount,
+            Method = request.Method,
+            TransactionId = request.TransactionId,
+            Notes = request.Notes,
+            PaymentDate = request.PaymentDate ?? DateTime.UtcNow
+        };
+
+        _context.Payments.Add(payment);
+        await _context.SaveChangesAsync();
+
+        // Update registration status if fully paid (assuming a fixed fee amount would be known)
+        // For now, we'll just record the payment
+
+        return CreatedAtAction(
+            nameof(GetPayment),
+            new { id = payment.Id },
+            MapToPaymentDto(payment));
+    }
+
+    [HttpGet("{id}")]
+    [Authorize(Roles = "Organizer")]
+    public async Task<ActionResult<PaymentDto>> GetPayment(Guid id)
+    {
+        var userId = GetCurrentUserId();
+        if (userId == null)
+        {
+            return Unauthorized();
+        }
+
+        var payment = await _context.Payments
+            .Include(p => p.Registration)
+            .ThenInclude(r => r.Event)
+            .FirstOrDefaultAsync(p => p.Id == id);
+
+        if (payment == null)
+        {
+            return NotFound();
+        }
+
+        // Verify user is organizer
+        if (payment.Registration.Event.OrganizerId != userId.Value)
+        {
+            return Forbid();
+        }
+
+        return Ok(MapToPaymentDto(payment));
+    }
+
+    [HttpGet("registration/{registrationId}")]
+    [Authorize(Roles = "Organizer")]
+    public async Task<ActionResult<IEnumerable<PaymentDto>>> GetRegistrationPayments(Guid registrationId)
+    {
+        var userId = GetCurrentUserId();
+        if (userId == null)
+        {
+            return Unauthorized();
+        }
+
+        // Verify organizer has access to this registration
+        var registration = await _context.Registrations
+            .Include(r => r.Event)
+            .FirstOrDefaultAsync(r => r.Id == registrationId);
+
+        if (registration == null)
+        {
+            return NotFound();
+        }
+
+        if (registration.Event.OrganizerId != userId.Value)
+        {
+            return Forbid();
+        }
+
+        var payments = await _context.Payments
+            .Where(p => p.RegistrationId == registrationId)
+            .OrderByDescending(p => p.PaymentDate)
+            .ToListAsync();
+
+        return Ok(payments.Select(MapToPaymentDto));
+    }
+
+    [HttpGet("registration/{registrationId}/status")]
+    [Authorize]
+    public async Task<ActionResult<object>> GetPaymentStatus(Guid registrationId)
+    {
+        var userId = GetCurrentUserId();
+        if (userId == null)
+        {
+            return Unauthorized();
+        }
+
+        var registration = await _context.Registrations
+            .Include(r => r.Event)
+            .Include(r => r.Payments)
+            .FirstOrDefaultAsync(r => r.Id == registrationId);
+
+        if (registration == null)
+        {
+            return NotFound();
+        }
+
+        // Participant can view their own, organizer can view any
+        var isOrganizer = registration.Event.OrganizerId == userId.Value;
+
+        if (registration.ParticipantId != userId.Value && !isOrganizer)
+        {
+            return Forbid();
+        }
+
+        var totalPaid = registration.Payments.Sum(p => p.Amount);
+        var status = totalPaid > 0 ? "paid" : "unpaid";
+
+        return Ok(new
+        {
+            RegistrationId = registrationId,
+            TotalPaid = totalPaid,
+            PaymentCount = registration.Payments.Count,
+            Status = status,
+            Payments = registration.Payments.Select(MapToPaymentDto)
+        });
+    }
+
+    [HttpGet("event/{eventId}/report")]
+    [Authorize(Roles = "Organizer")]
+    public async Task<ActionResult<PaymentReportDto>> GetPaymentReport(Guid eventId)
+    {
+        var userId = GetCurrentUserId();
+        if (userId == null)
+        {
+            return Unauthorized();
+        }
+
+        var eventEntity = await _context.Events
+            .FirstOrDefaultAsync(e => e.Id == eventId && e.OrganizerId == userId.Value);
+
+        if (eventEntity == null)
+        {
+            return NotFound();
+        }
+
+        var registrations = await _context.Registrations
+            .Include(r => r.Participant)
+            .Include(r => r.Payments)
+            .Where(r => r.EventId == eventId && r.Status != RegistrationStatus.Cancelled)
+            .ToListAsync();
+
+        var totalCollected = registrations.Sum(r => r.Payments.Sum(p => p.Amount));
+        var totalRegistrations = registrations.Count;
+        var paidRegistrations = registrations.Count(r => r.Payments.Any());
+        var unpaidRegistrations = registrations.Count(r => !r.Payments.Any());
+
+        var report = new PaymentReportDto
+        {
+            EventId = eventId,
+            EventName = eventEntity.Name,
+            TotalCollected = totalCollected,
+            TotalPending = 0, // Would require event fee structure
+            TotalOutstanding = 0, // Would require event fee structure
+            TotalRegistrations = totalRegistrations,
+            PaidRegistrations = paidRegistrations,
+            PartialRegistrations = 0, // Would require partial payment logic
+            UnpaidRegistrations = unpaidRegistrations,
+            Registrations = registrations.Select(r => new RegistrationPaymentDto
+            {
+                RegistrationId = r.Id,
+                ParticipantName = r.Participant.Name,
+                Status = r.Status.ToString(),
+                TotalPaid = r.Payments.Sum(p => p.Amount),
+                AmountDue = 0, // Would require event fee structure
+                PaymentStatus = r.Payments.Any() ? "paid" : "unpaid",
+                Payments = r.Payments.Select(MapToPaymentDto).ToList()
+            }).ToList()
+        };
+
+        return Ok(report);
+    }
+
+    private Guid? GetCurrentUserId()
+    {
+        var userIdClaim = User.FindFirst(System.Security.Claims.ClaimTypes.NameIdentifier)?.Value;
+        if (Guid.TryParse(userIdClaim, out var userId))
+        {
+            return userId;
+        }
+        return null;
+    }
+
+    private static PaymentDto MapToPaymentDto(Payment payment)
+    {
+        return new PaymentDto
+        {
+            Id = payment.Id,
+            RegistrationId = payment.RegistrationId,
+            Amount = payment.Amount,
+            Method = payment.Method.ToString(),
+            TransactionId = payment.TransactionId,
+            Notes = payment.Notes,
+            PaymentDate = payment.PaymentDate,
+            CreatedAt = payment.CreatedAt
+        };
+    }
+}

backend/Controllers/RegistrationsController.cs

@@ -0,0 +1,303 @@
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+using RacePlannerApi.Data;
+using RacePlannerApi.DTOs;
+using RacePlannerApi.Models;
+
+namespace RacePlannerApi.Controllers;
+
+[ApiController]
+[Route("api/[controller]")]
+[Authorize]
+public class RegistrationsController : ControllerBase
+{
+    private readonly RacePlannerDbContext _context;
+
+    public RegistrationsController(RacePlannerDbContext context)
+    {
+        _context = context;
+    }
+
+    [HttpPost]
+    public async Task<ActionResult<RegistrationDto>> CreateRegistration(CreateRegistrationRequest request)
+    {
+        var userId = GetCurrentUserId();
+        if (userId == null)
+        {
+            return Unauthorized();
+        }
+
+        // Check if event exists and is published
+        var eventEntity = await _context.Events
+            .FirstOrDefaultAsync(e => e.Id == request.EventId);
+
+        if (eventEntity == null)
+        {
+            return NotFound(new { error = "Event not found" });
+        }
+
+        if (eventEntity.Status != EventStatus.Published)
+        {
+            return BadRequest(new { error = "Event is not open for registration" });
+        }
+
+        // Check if already registered
+        var existingRegistration = await _context.Registrations
+            .FirstOrDefaultAsync(r => r.EventId == request.EventId && r.ParticipantId == userId.Value);
+
+        if (existingRegistration != null)
+        {
+            return Conflict(new { error = "Already registered for this event" });
+        }
+
+        // Check if event is full
+        if (eventEntity.MaxParticipants.HasValue)
+        {
+            var registrationCount = await _context.Registrations
+                .CountAsync(r => r.EventId == request.EventId && r.Status != RegistrationStatus.Cancelled);
+
+            if (registrationCount >= eventEntity.MaxParticipants.Value)
+            {
+                return BadRequest(new { error = "Event is full" });
+            }
+        }
+
+        var registration = new Registration
+        {
+            EventId = request.EventId,
+            ParticipantId = userId.Value,
+            Status = RegistrationStatus.Pending,
+            Category = request.Category,
+            EmergencyContact = request.EmergencyContact
+        };
+
+        _context.Registrations.Add(registration);
+        await _context.SaveChangesAsync();
+
+        // Load related data
+        await _context.Entry(registration)
+            .Reference(r => r.Event)
+            .LoadAsync();
+        await _context.Entry(registration)
+            .Reference(r => r.Participant)
+            .LoadAsync();
+        await _context.Entry(registration)
+            .Collection(r => r.Payments)
+            .LoadAsync();
+
+        return CreatedAtAction(
+            nameof(GetRegistration),
+            new { id = registration.Id },
+            MapToRegistrationDto(registration));
+    }
+
+    [HttpGet("{id}")]
+    public async Task<ActionResult<RegistrationDto>> GetRegistration(Guid id)
+    {
+        var userId = GetCurrentUserId();
+        if (userId == null)
+        {
+            return Unauthorized();
+        }
+
+        var registration = await _context.Registrations
+            .Include(r => r.Event)
+            .Include(r => r.Participant)
+            .Include(r => r.Payments)
+            .FirstOrDefaultAsync(r => r.Id == id);
+
+        if (registration == null)
+        {
+            return NotFound();
+        }
+
+        // Only participant or event organizer can view
+        var isOrganizer = await _context.Events
+            .AnyAsync(e => e.Id == registration.EventId && e.OrganizerId == userId.Value);
+
+        if (registration.ParticipantId != userId.Value && !isOrganizer)
+        {
+            return Forbid();
+        }
+
+        return Ok(MapToRegistrationDto(registration));
+    }
+
+    [HttpGet("my-registrations")]
+    public async Task<ActionResult<IEnumerable<RegistrationDto>>> GetMyRegistrations()
+    {
+        var userId = GetCurrentUserId();
+        if (userId == null)
+        {
+            return Unauthorized();
+        }
+
+        var registrations = await _context.Registrations
+            .Include(r => r.Event)
+            .Include(r => r.Participant)
+            .Include(r => r.Payments)
+            .Where(r => r.ParticipantId == userId.Value)
+            .OrderBy(r => r.Event.EventDate)
+            .ToListAsync();
+
+        return Ok(registrations.Select(MapToRegistrationDto));
+    }
+
+    [HttpGet("event/{eventId}")]
+    [Authorize(Roles = "Organizer")]
+    public async Task<ActionResult<IEnumerable<RegistrationDto>>> GetEventRegistrations(Guid eventId)
+    {
+        var userId = GetCurrentUserId();
+        if (userId == null)
+        {
+            return Unauthorized();
+        }
+
+        // Verify user is organizer of this event
+        var eventEntity = await _context.Events
+            .FirstOrDefaultAsync(e => e.Id == eventId && e.OrganizerId == userId.Value);
+
+        if (eventEntity == null)
+        {
+            return NotFound();
+        }
+
+        var registrations = await _context.Registrations
+            .Include(r => r.Event)
+            .Include(r => r.Participant)
+            .Include(r => r.Payments)
+            .Where(r => r.EventId == eventId)
+            .OrderBy(r => r.CreatedAt)
+            .ToListAsync();
+
+        return Ok(registrations.Select(MapToRegistrationDto));
+    }
+
+    [HttpPut("{id}")]
+    public async Task<ActionResult<RegistrationDto>> UpdateRegistration(Guid id, UpdateRegistrationRequest request)
+    {
+        var userId = GetCurrentUserId();
+        if (userId == null)
+        {
+            return Unauthorized();
+        }
+
+        var registration = await _context.Registrations
+            .Include(r => r.Event)
+            .FirstOrDefaultAsync(r => r.Id == id);
+
+        if (registration == null)
+        {
+            return NotFound();
+        }
+
+        // Participants can only update their own registrations
+        // Organizers can update any registration for their events
+        var isOrganizer = registration.Event.OrganizerId == userId.Value;
+
+        if (registration.ParticipantId != userId.Value && !isOrganizer)
+        {
+            return Forbid();
+        }
+
+        // Update fields
+        if (request.Status.HasValue && isOrganizer)
+        {
+            registration.Status = request.Status.Value;
+        }
+
+        if (request.Category != null)
+        {
+            registration.Category = request.Category;
+        }
+
+        if (request.EmergencyContact != null)
+        {
+            registration.EmergencyContact = request.EmergencyContact;
+        }
+
+        registration.UpdatedAt = DateTime.UtcNow;
+
+        await _context.SaveChangesAsync();
+
+        // Reload related data
+        await _context.Entry(registration)
+            .Reference(r => r.Participant)
+            .LoadAsync();
+        await _context.Entry(registration)
+            .Collection(r => r.Payments)
+            .LoadAsync();
+
+        return Ok(MapToRegistrationDto(registration));
+    }
+
+    [HttpPost("{id}/cancel")]
+    public async Task<ActionResult<RegistrationDto>> CancelRegistration(Guid id)
+    {
+        var userId = GetCurrentUserId();
+        if (userId == null)
+        {
+            return Unauthorized();
+        }
+
+        var registration = await _context.Registrations
+            .Include(r => r.Event)
+            .Include(r => r.Participant)
+            .Include(r => r.Payments)
+            .FirstOrDefaultAsync(r => r.Id == id);
+
+        if (registration == null)
+        {
+            return NotFound();
+        }
+
+        // Only participant or event organizer can cancel
+        var isOrganizer = registration.Event.OrganizerId == userId.Value;
+
+        if (registration.ParticipantId != userId.Value && !isOrganizer)
+        {
+            return Forbid();
+        }
+
+        registration.Status = RegistrationStatus.Cancelled;
+        registration.UpdatedAt = DateTime.UtcNow;
+
+        await _context.SaveChangesAsync();
+
+        return Ok(MapToRegistrationDto(registration));
+    }
+
+    private Guid? GetCurrentUserId()
+    {
+        var userIdClaim = User.FindFirst(System.Security.Claims.ClaimTypes.NameIdentifier)?.Value;
+        if (Guid.TryParse(userIdClaim, out var userId))
+        {
+            return userId;
+        }
+        return null;
+    }
+
+    private static RegistrationDto MapToRegistrationDto(Registration registration)
+    {
+        var totalPaid = registration.Payments?.Sum(p => p.Amount) ?? 0;
+
+        return new RegistrationDto
+        {
+            Id = registration.Id,
+            EventId = registration.EventId,
+            EventName = registration.Event?.Name ?? string.Empty,
+            EventDate = registration.Event?.EventDate ?? DateTime.MinValue,
+            ParticipantId = registration.ParticipantId,
+            ParticipantName = registration.Participant?.Name ?? string.Empty,
+            ParticipantEmail = registration.Participant?.Email ?? string.Empty,
+            Status = registration.Status.ToString(),
+            Category = registration.Category,
+            EmergencyContact = registration.EmergencyContact,
+            CreatedAt = registration.CreatedAt,
+            UpdatedAt = registration.UpdatedAt,
+            TotalPaid = totalPaid,
+            AmountDue = 0 // Will be calculated based on event fee if needed
+        };
+    }
+}

backend/DTOs/AnnouncementDtos.cs

@@ -0,0 +1,42 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace RacePlannerApi.DTOs;
+
+public class CreateAnnouncementRequest
+{
+    [Required]
+    public Guid EventId { get; set; }
+
+    [Required]
+    [MaxLength(200)]
+    public string Title { get; set; } = string.Empty;
+
+    [Required]
+    [MaxLength(5000)]
+    public string Content { get; set; } = string.Empty;
+}
+
+public class UpdateAnnouncementRequest
+{
+    [MaxLength(200)]
+    public string? Title { get; set; }
+
+    [MaxLength(5000)]
+    public string? Content { get; set; }
+
+    public bool? IsPublished { get; set; }
+}
+
+public class AnnouncementDto
+{
+    public Guid Id { get; set; }
+    public Guid EventId { get; set; }
+    public string EventName { get; set; } = string.Empty;
+    public string Title { get; set; } = string.Empty;
+    public string Content { get; set; } = string.Empty;
+    public Guid AuthorId { get; set; }
+    public string AuthorName { get; set; } = string.Empty;
+    public DateTime CreatedAt { get; set; }
+    public DateTime? UpdatedAt { get; set; }
+    public bool IsPublished { get; set; }
+}

backend/DTOs/DashboardDtos.cs

@@ -0,0 +1,66 @@
+namespace RacePlannerApi.DTOs;
+
+public class OrganizerDashboardDto
+{
+    public int TotalEvents { get; set; }
+    public int PublishedEvents { get; set; }
+    public int DraftEvents { get; set; }
+    public int TotalRegistrations { get; set; }
+    public int PendingRegistrations { get; set; }
+    public int ConfirmedRegistrations { get; set; }
+    public int CancelledRegistrations { get; set; }
+    public decimal TotalRevenue { get; set; }
+    public List<EventSummaryDto> UpcomingEvents { get; set; } = new();
+    public List<EventCapacityDto> EventsNearCapacity { get; set; } = new();
+}
+
+public class EventSummaryDto
+{
+    public Guid Id { get; set; }
+    public string Name { get; set; } = string.Empty;
+    public DateTime EventDate { get; set; }
+    public string Location { get; set; } = string.Empty;
+    public int RegistrationCount { get; set; }
+    public int? MaxParticipants { get; set; }
+}
+
+public class EventCapacityDto
+{
+    public Guid Id { get; set; }
+    public string Name { get; set; } = string.Empty;
+    public DateTime EventDate { get; set; }
+    public int RegistrationCount { get; set; }
+    public int? MaxParticipants { get; set; }
+    public double CapacityPercentage => MaxParticipants.HasValue && MaxParticipants.Value > 0
+        ? (double)RegistrationCount / MaxParticipants.Value * 100
+        : 0;
+}
+
+public class ParticipantDashboardDto
+{
+    public int TotalRegistrations { get; set; }
+    public int UpcomingEvents { get; set; }
+    public int CompletedEvents { get; set; }
+    public int CancelledRegistrations { get; set; }
+    public List<RegistrationSummaryDto> MyRegistrations { get; set; } = new();
+    public List<UpcomingEventDto> UpcomingEventList { get; set; } = new();
+}
+
+public class RegistrationSummaryDto
+{
+    public Guid Id { get; set; }
+    public Guid EventId { get; set; }
+    public string EventName { get; set; } = string.Empty;
+    public DateTime EventDate { get; set; }
+    public string Status { get; set; } = string.Empty;
+    public DateTime RegisteredAt { get; set; }
+}
+
+public class UpcomingEventDto
+{
+    public Guid Id { get; set; }
+    public string Name { get; set; } = string.Empty;
+    public DateTime EventDate { get; set; }
+    public string Location { get; set; } = string.Empty;
+    public int DaysUntil => (EventDate - DateTime.UtcNow).Days;
+}

backend/DTOs/EventDtos.cs

@@ -0,0 +1,85 @@
+using System.ComponentModel.DataAnnotations;
+using RacePlannerApi.Models;
+
+namespace RacePlannerApi.DTOs;
+
+public class CreateEventRequest
+{
+    [Required]
+    [MaxLength(200)]
+    public string Name { get; set; } = string.Empty;
+
+    [MaxLength(2000)]
+    public string Description { get; set; } = string.Empty;
+
+    [Required]
+    public DateTime EventDate { get; set; }
+
+    [Required]
+    [MaxLength(500)]
+    public string Location { get; set; } = string.Empty;
+
+    [MaxLength(100)]
+    public string? Category { get; set; }
+
+    public List<string> Tags { get; set; } = new();
+
+    public int? MaxParticipants { get; set; }
+}
+
+public class UpdateEventRequest
+{
+    [MaxLength(200)]
+    public string? Name { get; set; }
+
+    [MaxLength(2000)]
+    public string? Description { get; set; }
+
+    public DateTime? EventDate { get; set; }
+
+    [MaxLength(500)]
+    public string? Location { get; set; }
+
+    public EventStatus? Status { get; set; }
+
+    [MaxLength(100)]
+    public string? Category { get; set; }
+
+    public List<string>? Tags { get; set; }
+
+    public int? MaxParticipants { get; set; }
+}
+
+public class EventDto
+{
+    public Guid Id { get; set; }
+    public string Name { get; set; } = string.Empty;
+    public string Description { get; set; } = string.Empty;
+    public DateTime EventDate { get; set; }
+    public string Location { get; set; } = string.Empty;
+    public string Status { get; set; } = string.Empty;
+    public string? Category { get; set; }
+    public List<string> Tags { get; set; } = new();
+    public int? MaxParticipants { get; set; }
+    public int CurrentRegistrations { get; set; }
+    public DateTime CreatedAt { get; set; }
+    public DateTime UpdatedAt { get; set; }
+    public UserSummaryDto Organizer { get; set; } = null!;
+}
+
+public class EventFilterRequest
+{
+    public string? Category { get; set; }
+    public List<string>? Tags { get; set; }
+    public DateTime? FromDate { get; set; }
+    public DateTime? ToDate { get; set; }
+    public string? Status { get; set; }
+    public Guid? OrganizerId { get; set; }
+}
+
+public class UserSummaryDto
+{
+    public Guid Id { get; set; }
+    public string Name { get; set; } = string.Empty;
+    public string Email { get; set; } = string.Empty;
+}

backend/DTOs/PaymentDtos.cs

@@ -0,0 +1,62 @@
+using System.ComponentModel.DataAnnotations;
+using RacePlannerApi.Models;
+
+namespace RacePlannerApi.DTOs;
+
+public class CreatePaymentRequest
+{
+    [Required]
+    public Guid RegistrationId { get; set; }
+
+    [Required]
+    [Range(0.01, double.MaxValue)]
+    public decimal Amount { get; set; }
+
+    [Required]
+    public PaymentMethod Method { get; set; }
+
+    [MaxLength(100)]
+    public string? TransactionId { get; set; }
+
+    [MaxLength(500)]
+    public string? Notes { get; set; }
+
+    public DateTime? PaymentDate { get; set; }
+}
+
+public class PaymentDto
+{
+    public Guid Id { get; set; }
+    public Guid RegistrationId { get; set; }
+    public decimal Amount { get; set; }
+    public string Method { get; set; } = string.Empty;
+    public string? TransactionId { get; set; }
+    public string? Notes { get; set; }
+    public DateTime PaymentDate { get; set; }
+    public DateTime CreatedAt { get; set; }
+}
+
+public class PaymentReportDto
+{
+    public Guid EventId { get; set; }
+    public string EventName { get; set; } = string.Empty;
+    public decimal TotalCollected { get; set; }
+    public decimal TotalPending { get; set; }
+    public decimal TotalOutstanding { get; set; }
+    public int TotalRegistrations { get; set; }
+    public int PaidRegistrations { get; set; }
+    public int PartialRegistrations { get; set; }
+    public int UnpaidRegistrations { get; set; }
+    public List<RegistrationPaymentDto> Registrations { get; set; } = new();
+}
+
+public class RegistrationPaymentDto
+{
+    public Guid RegistrationId { get; set; }
+    public string ParticipantName { get; set; } = string.Empty;
+    public string Status { get; set; } = string.Empty;
+    public decimal TotalPaid { get; set; }
+    public decimal AmountDue { get; set; }
+    public string PaymentStatus { get; set; } = string.Empty;
+    public List<PaymentDto> Payments { get; set; } = new();
+}

backend/DTOs/RegistrationDtos.cs

@@ -0,0 +1,45 @@
+using System.ComponentModel.DataAnnotations;
+using RacePlannerApi.Models;
+
+namespace RacePlannerApi.DTOs;
+
+public class CreateRegistrationRequest
+{
+    [Required]
+    public Guid EventId { get; set; }
+
+    [MaxLength(100)]
+    public string? Category { get; set; }
+
+    [MaxLength(200)]
+    public string? EmergencyContact { get; set; }
+}
+
+public class UpdateRegistrationRequest
+{
+    public RegistrationStatus? Status { get; set; }
+
+    [MaxLength(100)]
+    public string? Category { get; set; }
+
+    [MaxLength(200)]
+    public string? EmergencyContact { get; set; }
+}
+
+public class RegistrationDto
+{
+    public Guid Id { get; set; }
+    public Guid EventId { get; set; }
+    public string EventName { get; set; } = string.Empty;
+    public DateTime EventDate { get; set; }
+    public Guid ParticipantId { get; set; }
+    public string ParticipantName { get; set; } = string.Empty;
+    public string ParticipantEmail { get; set; } = string.Empty;
+    public string Status { get; set; } = string.Empty;
+    public string? Category { get; set; }
+    public string? EmergencyContact { get; set; }
+    public DateTime CreatedAt { get; set; }
+    public DateTime? UpdatedAt { get; set; }
+    public decimal TotalPaid { get; set; }
+    public decimal AmountDue { get; set; }
+}

backend/appsettings.Production.json

@@ -0,0 +1,17 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  },
+  "AllowedHosts": "*",
+  "Jwt": {
+    "Key": "${JWT_SECRET_KEY}",
+    "Issuer": "RacePlannerApi",
+    "Audience": "RacePlannerClient"
+  },
+  "ConnectionStrings": {
+    "DefaultConnection": "${DATABASE_URL}"
+  }
+}

docker-compose.yml

@@ -0,0 +1,46 @@
+version: '3.8'
+
+services:
+  db:
+    image: postgres:16
+    environment:
+      POSTGRES_DB: RacePlanner
+      POSTGRES_USER: postgres
+      POSTGRES_PASSWORD: postgres
+    ports:
+      - "5432:5432"
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U postgres"]
+      interval: 5s
+      timeout: 5s
+      retries: 5
+
+  backend:
+    build:
+      context: ./backend
+      dockerfile: Dockerfile
+    environment:
+      ASPNETCORE_ENVIRONMENT: Production
+      ConnectionStrings__DefaultConnection: Host=db;Database=RacePlanner;Username=postgres;Password=postgres
+      Jwt__Key: your-super-secret-key-minimum-32-characters-long-here
+    ports:
+      - "5000:80"
+    depends_on:
+      db:
+        condition: service_healthy
+
+  frontend:
+    build:
+      context: ./frontend
+      dockerfile: Dockerfile
+    environment:
+      NEXT_PUBLIC_API_URL: http://localhost:5000/api
+    ports:
+      - "3000:3000"
+    depends_on:
+      - backend
+
+volumes:
+  postgres_data:

frontend/src/app/announcements/[eventId]/page.tsx

@@ -0,0 +1,20 @@
+import { AnnouncementList } from '@/components/announcement-list';
+
+interface AnnouncementsPageProps {
+  params: Promise<{
+    eventId: string;
+  }>;
+}
+
+export default async function AnnouncementsPage({ params }: AnnouncementsPageProps) {
+  const { eventId } = await params;
+  
+  return (
+    <div className="min-h-screen bg-gray-50 py-8">
+      <div className="max-w-4xl mx-auto px-4">
+        <h1 className="text-3xl font-bold mb-8">Announcements</h1>
+        <AnnouncementList eventId={eventId} />
+      </div>
+    </div>
+  );
+}

frontend/src/app/dashboard/page.tsx

@@ -0,0 +1,12 @@
+import { Dashboard } from '@/components/dashboard';
+
+export default function DashboardPage() {
+  return (
+    <div className="min-h-screen bg-gray-50 py-8">
+      <div className="max-w-7xl mx-auto px-4">
+        <h1 className="text-3xl font-bold mb-8">Dashboard</h1>
+        <Dashboard />
+      </div>
+    </div>
+  );
+}

frontend/src/app/events/[eventId]/page.tsx

@@ -0,0 +1,19 @@
+import { EventDetail } from '@/components/event-detail';
+
+interface EventPageProps {
+  params: Promise<{
+    eventId: string;
+  }>;
+}
+
+export default async function EventPage({ params }: EventPageProps) {
+  const { eventId } = await params;
+  
+  return (
+    <div className="min-h-screen bg-gray-50 py-8">
+      <div className="max-w-7xl mx-auto px-4">
+        <EventDetail eventId={eventId} />
+      </div>
+    </div>
+  );
+}

frontend/src/app/events/[eventId]/register/page.tsx

@@ -0,0 +1,19 @@
+import { RegistrationForm } from '@/components/registration-form';
+
+interface RegisterPageProps {
+  params: Promise<{
+    eventId: string;
+  }>;
+}
+
+export default async function RegisterPage({ params }: RegisterPageProps) {
+  const { eventId } = await params;
+  
+  return (
+    <div className="min-h-screen bg-gray-50 py-8">
+      <div className="max-w-4xl mx-auto px-4">
+        <RegistrationForm eventId={eventId} eventName="Event" />
+      </div>
+    </div>
+  );
+}

frontend/src/app/events/create/page.tsx

@@ -0,0 +1,12 @@
+import { EventForm } from '@/components/event-form';
+
+export default function CreateEventPage() {
+  return (
+    <div className="min-h-screen bg-gray-50 py-8">
+      <div className="max-w-7xl mx-auto px-4">
+        <h1 className="text-3xl font-bold mb-8">Create Event</h1>
+        <EventForm />
+      </div>
+    </div>
+  );
+}

frontend/src/app/events/page.tsx

@@ -0,0 +1,23 @@
+import { EventList } from '@/components/event-list';
+import { Suspense } from 'react';
+
+export default function EventsPage() {
+  return (
+    <div className="min-h-screen bg-gray-50 py-8">
+      <div className="max-w-7xl mx-auto px-4">
+        <div className="flex justify-between items-center mb-8">
+          <h1 className="text-3xl font-bold">Events</h1>
+          <a
+            href="/events/create"
+            className="px-4 py-2 bg-blue-600 text-white rounded-md hover:bg-blue-700"
+          >
+            Create Event
+          </a>
+        </div>
+        <Suspense fallback={<div>Loading...</div>}>
+          <EventList />
+        </Suspense>
+      </div>
+    </div>
+  );
+}

frontend/src/app/layout.tsx

@@ -1,6 +1,8 @@
 import type { Metadata } from "next";
 import { Geist, Geist_Mono } from "next/font/google";
 import "./globals.css";
+import { AuthProvider } from "@/lib/auth-context";
+import { Navigation } from "@/components/navigation";
 
 const geistSans = Geist({
   variable: "--font-geist-sans",
@@ -13,8 +15,8 @@ const geistMono = Geist_Mono({
 });
 
 export const metadata: Metadata = {
-  title: "Create Next App",
-  description: "Generated by create next app",
+  title: "RacePlanner - Event Management",
+  description: "Plan and manage race events",
 };
 
 export default function RootLayout({
@@ -27,7 +29,14 @@ export default function RootLayout({
       lang="en"
       className={`${geistSans.variable} ${geistMono.variable} h-full antialiased`}
     >
-      <body className="min-h-full flex flex-col">{children}</body>
+      <body className="min-h-full flex flex-col bg-gray-50">
+        <AuthProvider>
+          <Navigation />
+          <main className="flex-1">
+            {children}
+          </main>
+        </AuthProvider>
+      </body>
     </html>
   );
-}
+}

frontend/src/app/login/page.tsx

@@ -0,0 +1,9 @@
+import { LoginForm } from '@/components/login-form';
+
+export default function LoginPage() {
+  return (
+    <div className="min-h-screen bg-gray-50 py-12">
+      <LoginForm />
+    </div>
+  );
+}

frontend/src/app/payments/[registrationId]/page.tsx

@@ -0,0 +1,19 @@
+import { PaymentForm } from '@/components/payment-form';
+
+interface PaymentPageProps {
+  params: Promise<{
+    registrationId: string;
+  }>;
+}
+
+export default async function PaymentPage({ params }: PaymentPageProps) {
+  const { registrationId } = await params;
+  
+  return (
+    <div className="min-h-screen bg-gray-50 py-8">
+      <div className="max-w-4xl mx-auto px-4">
+        <PaymentForm registrationId={registrationId} />
+      </div>
+    </div>
+  );
+}

frontend/src/app/register/page.tsx

@@ -0,0 +1,9 @@
+import { RegisterForm } from '@/components/register-form';
+
+export default function RegisterPage() {
+  return (
+    <div className="min-h-screen bg-gray-50 py-12">
+      <RegisterForm />
+    </div>
+  );
+}

frontend/src/app/registrations/page.tsx

@@ -0,0 +1,15 @@
+import { RegistrationList } from '@/components/registration-list';
+import { Suspense } from 'react';
+
+export default function RegistrationsPage() {
+  return (
+    <div className="min-h-screen bg-gray-50 py-8">
+      <div className="max-w-4xl mx-auto px-4">
+        <h1 className="text-3xl font-bold mb-8">My Registrations</h1>
+        <Suspense fallback={<div>Loading...</div>}>
+          <RegistrationList />
+        </Suspense>
+      </div>
+    </div>
+  );
+}

frontend/src/components/announcement-form.tsx

@@ -0,0 +1,84 @@
+'use client';
+
+import { useState } from 'react';
+import { api } from '@/lib/api';
+import { useRouter } from 'next/navigation';
+
+interface AnnouncementFormProps {
+  eventId: string;
+}
+
+export function AnnouncementForm({ eventId }: AnnouncementFormProps) {
+  const [title, setTitle] = useState('');
+  const [content, setContent] = useState('');
+  const [isSubmitting, setIsSubmitting] = useState(false);
+  const [error, setError] = useState<string | null>(null);
+  const router = useRouter();
+
+  const handleSubmit = async (e: React.FormEvent) => {
+    e.preventDefault();
+    setError(null);
+    setIsSubmitting(true);
+
+    try {
+      await api.createAnnouncement(eventId, title, content);
+      router.push(`/events/${eventId}`);
+    } catch (err) {
+      setError(err instanceof Error ? err.message : 'Failed to create announcement');
+    } finally {
+      setIsSubmitting(false);
+    }
+  };
+
+  return (
+    <div className="max-w-md mx-auto">
+      {error && (
+        <div className="mb-4 p-3 bg-red-100 border border-red-400 text-red-700 rounded">
+          {error}
+        </div>
+      )}
+
+      <form onSubmit={handleSubmit} className="bg-white rounded-lg shadow-md p-6 space-y-4">
+        <h2 className="text-xl font-bold mb-4">Create Announcement</h2>
+        
+        <div>
+          <label htmlFor="title" className="block text-sm font-medium text-gray-700 mb-1">
+            Title
+          </label>
+          <input
+            id="title"
+            type="text"
+            value={title}
+            onChange={(e) => setTitle(e.target.value)}
+            required
+            maxLength={200}
+            className="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-blue-500"
+          />
+        </div>
+
+        <div>
+          <label htmlFor="content" className="block text-sm font-medium text-gray-700 mb-1">
+            Content
+          </label>
+          <textarea
+            id="content"
+            value={content}
+            onChange={(e) => setContent(e.target.value)}
+            required
+            rows={6}
+            maxLength={5000}
+            className="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-blue-500"
+          />
+        </div>
+
+        <button
+          type="submit"
+          disabled={isSubmitting}
+          className="w-full py-2 px-4 bg-blue-600 text-white rounded-md hover:bg-blue-700 disabled:bg-gray-400"
+        >
+          {isSubmitting ? 'Posting...' : 'Post Announcement'}
+        </button>
+      </form>
+    </div>
+  );
+}

frontend/src/components/announcement-list.tsx

@@ -0,0 +1,69 @@
+'use client';
+
+import { useState, useEffect } from 'react';
+import { api, Announcement } from '@/lib/api';
+
+interface AnnouncementListProps {
+  eventId: string;
+}
+
+export function AnnouncementList({ eventId }: AnnouncementListProps) {
+  const [announcements, setAnnouncements] = useState<Announcement[]>([]);
+  const [isLoading, setIsLoading] = useState(true);
+  const [error, setError] = useState<string | null>(null);
+
+  useEffect(() => {
+    loadAnnouncements();
+  }, [eventId]);
+
+  const loadAnnouncements = async () => {
+    try {
+      setIsLoading(true);
+      const data = await api.getEventAnnouncements(eventId);
+      setAnnouncements(data);
+    } catch (err) {
+      setError(err instanceof Error ? err.message : 'Failed to load announcements');
+    } finally {
+      setIsLoading(false);
+    }
+  };
+
+  if (isLoading) {
+    return <div className="text-center py-4">Loading announcements...</div>;
+  }
+
+  if (error) {
+    return (
+      <div className="bg-red-100 border border-red-400 text-red-700 px-4 py-3 rounded text-sm">
+        {error}
+      </div>
+    );
+  }
+
+  if (announcements.length === 0) {
+    return (
+      <div className="text-center py-4 text-gray-500 text-sm">
+        No announcements yet.
+      </div>
+    );
+  }
+
+  return (
+    <div className="space-y-4">
+      {announcements.map((announcement) => (
+        <div key={announcement.id} className="bg-white rounded-lg shadow-sm border p-4">
+          <div className="flex justify-between items-start mb-2">
+            <h3 className="font-semibold text-lg">{announcement.title}</h3>
+            <span className="text-xs text-gray-500">
+              {new Date(announcement.createdAt).toLocaleDateString()}
+            </span>
+          </div>
+          <p className="text-gray-700 whitespace-pre-wrap">{announcement.content}</p>
+          <p className="text-sm text-gray-500 mt-2">
+            Posted by {announcement.authorName}
+          </p>
+        </div>
+      ))}
+    </div>
+  );
+}

frontend/src/components/dashboard.tsx

@@ -0,0 +1,200 @@
+'use client';
+
+import { useState, useEffect } from 'react';
+import { useAuth } from '@/lib/auth-context';
+import { api } from '@/lib/api';
+
+export function Dashboard() {
+  const { user } = useAuth();
+  const [dashboard, setDashboard] = useState<any>(null);
+  const [isLoading, setIsLoading] = useState(true);
+  const [error, setError] = useState<string | null>(null);
+
+  useEffect(() => {
+    loadDashboard();
+  }, []);
+
+  const loadDashboard = async () => {
+    try {
+      setIsLoading(true);
+      if (user?.role === 'Organizer') {
+        const data = await api.getOrganizerDashboard();
+        setDashboard(data);
+      } else {
+        const data = await api.getParticipantDashboard();
+        setDashboard(data);
+      }
+    } catch (err) {
+      setError(err instanceof Error ? err.message : 'Failed to load dashboard');
+    } finally {
+      setIsLoading(false);
+    }
+  };
+
+  if (isLoading) {
+    return <div className="text-center py-8">Loading dashboard...</div>;
+  }
+
+  if (error) {
+    return (
+      <div className="bg-red-100 border border-red-400 text-red-700 px-4 py-3 rounded">
+        {error}
+      </div>
+    );
+  }
+
+  if (!dashboard) {
+    return <div className="text-center py-8">No data available</div>;
+  }
+
+  return (
+    <div className="space-y-8">
+      {/* Quick Actions */}
+      <div className="flex gap-4 flex-wrap">
+        {user?.role === 'Organizer' ? (
+          <>
+            <a href="/events/create" className="px-6 py-3 bg-blue-600 text-white rounded-lg hover:bg-blue-700">
+              Create Event
+            </a>
+            <a href="/events" className="px-6 py-3 bg-gray-200 text-gray-800 rounded-lg hover:bg-gray-300">
+              Manage Events
+            </a>
+          </>
+        ) : (
+          <>
+            <a href="/events" className="px-6 py-3 bg-blue-600 text-white rounded-lg hover:bg-blue-700">
+              Browse Events
+            </a>
+            <a href="/registrations" className="px-6 py-3 bg-gray-200 text-gray-800 rounded-lg hover:bg-gray-300">
+              My Registrations
+            </a>
+          </>
+        )}
+      </div>
+
+      {/* Stats Grid */}
+      {user?.role === 'Organizer' ? (
+        <OrganizerDashboard data={dashboard} />
+      ) : (
+        <ParticipantDashboard data={dashboard} />
+      )}
+    </div>
+  );
+}
+
+function OrganizerDashboard({ data }: { data: any }) {
+  return (
+    <>
+      <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-4 gap-6">
+        <StatCard title="Total Events" value={data.totalEvents} />
+        <StatCard title="Published" value={data.publishedEvents} color="green" />
+        <StatCard title="Draft" value={data.draftEvents} color="yellow" />
+        <StatCard title="Total Registrations" value={data.totalRegistrations} color="blue" />
+      </div>
+
+      <div className="grid grid-cols-1 lg:grid-cols-2 gap-6">
+        <div className="bg-white rounded-lg shadow-md p-6">
+          <h3 className="text-lg font-semibold mb-4">Upcoming Events</h3>
+          {data.upcomingEvents?.length > 0 ? (
+            <div className="space-y-3">
+              {data.upcomingEvents.map((event: any) => (
+                <div key={event.id} className="border-b pb-3 last:border-0">
+                  <a href={`/events/${event.id}`} className="font-medium hover:text-blue-600">
+                    {event.name}
+                  </a>
+                  <p className="text-sm text-gray-500">
+                    {new Date(event.eventDate).toLocaleDateString()} - {event.registrationCount} registered
+                  </p>
+                </div>
+              ))}
+            </div>
+          ) : (
+            <p className="text-gray-500">No upcoming events</p>
+          )}
+        </div>
+
+        <div className="bg-white rounded-lg shadow-md p-6">
+          <h3 className="text-lg font-semibold mb-4">Revenue</h3>
+          <div className="text-3xl font-bold text-green-600 mb-2">
+            ${data.totalRevenue?.toFixed(2) || '0.00'}
+          </div>
+          <div className="grid grid-cols-3 gap-4 mt-4 text-sm">
+            <div className="text-center">
+              <div className="font-bold text-green-600">{data.paidRegistrations}</div>
+              <div className="text-gray-500">Paid</div>
+            </div>
+            <div className="text-center">
+              <div className="font-bold text-yellow-600">{data.pendingRegistrations}</div>
+              <div className="text-gray-500">Pending</div>
+            </div>
+            <div className="text-center">
+              <div className="font-bold text-red-600">{data.cancelledRegistrations}</div>
+              <div className="text-gray-500">Cancelled</div>
+            </div>
+          </div>
+        </div>
+      </div>
+    </>
+  );
+}
+
+function ParticipantDashboard({ data }: { data: any }) {
+  return (
+    <>
+      <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-4 gap-6">
+        <StatCard title="Total Registrations" value={data.totalRegistrations} />
+        <StatCard title="Upcoming Events" value={data.upcomingEvents} color="green" />
+        <StatCard title="Completed" value={data.completedEvents} color="blue" />
+        <StatCard title="Cancelled" value={data.cancelledRegistrations} color="red" />
+      </div>
+
+      <div className="bg-white rounded-lg shadow-md p-6">
+        <h3 className="text-lg font-semibold mb-4">My Recent Registrations</h3>
+        {data.myRegistrations?.length > 0 ? (
+          <div className="space-y-3">
+            {data.myRegistrations.slice(0, 5).map((reg: any) => (
+              <div key={reg.id} className="flex justify-between items-center border-b pb-3 last:border-0">
+                <div>
+                  <a href={`/events/${reg.eventId}`} className="font-medium hover:text-blue-600">
+                    {reg.eventName}
+                  </a>
+                  <p className="text-sm text-gray-500">
+                    {new Date(reg.eventDate).toLocaleDateString()} - 
+                    <span className={`ml-2 px-2 py-1 text-xs rounded ${
+                      reg.status === 'Confirmed' ? 'bg-green-100 text-green-800' :
+                      reg.status === 'Pending' ? 'bg-yellow-100 text-yellow-800' :
+                      'bg-red-100 text-red-800'
+                    }`}>
+                      {reg.status}
+                    </span>
+                  </p>
+                </div>
+              </div>
+            ))}
+          </div>
+        ) : (
+          <p className="text-gray-500">
+            No registrations yet. <a href="/events" className="text-blue-600 hover:underline">Browse events</a>
+          </p>
+        )}
+      </div>
+    </>
+  );
+}
+
+function StatCard({ title, value, color = 'gray' }: { title: string; value: number; color?: string }) {
+  const colorClasses: Record<string, string> = {
+    gray: 'bg-white',
+    green: 'bg-green-50',
+    yellow: 'bg-yellow-50',
+    blue: 'bg-blue-50',
+    red: 'bg-red-50',
+  };
+
+  return (
+    <div className={`${colorClasses[color]} rounded-lg shadow-md p-6`}>
+      <h3 className="text-sm font-medium text-gray-500 mb-2">{title}</h3>
+      <div className="text-3xl font-bold">{value}</div>
+    </div>
+  );
+}

frontend/src/components/event-detail.tsx

@@ -0,0 +1,151 @@
+'use client';
+
+import { useState, useEffect } from 'react';
+import { api, Event } from '@/lib/api';
+import { useAuth } from '@/lib/auth-context';
+
+interface EventDetailProps {
+  eventId: string;
+}
+
+export function EventDetail({ eventId }: EventDetailProps) {
+  const [event, setEvent] = useState<Event | null>(null);
+  const [isLoading, setIsLoading] = useState(true);
+  const [error, setError] = useState<string | null>(null);
+  const { user } = useAuth();
+
+  useEffect(() => {
+    loadEvent();
+  }, [eventId]);
+
+  const loadEvent = async () => {
+    try {
+      setIsLoading(true);
+      const data = await api.getEvent(eventId);
+      setEvent(data);
+    } catch (err) {
+      setError(err instanceof Error ? err.message : 'Failed to load event');
+    } finally {
+      setIsLoading(false);
+    }
+  };
+
+  if (isLoading) {
+    return <div className="text-center py-8">Loading...</div>;
+  }
+
+  if (error) {
+    return (
+      <div className="bg-red-100 border border-red-400 text-red-700 px-4 py-3 rounded">
+        {error}
+      </div>
+    );
+  }
+
+  if (!event) {
+    return <div className="text-center py-8">Event not found</div>;
+  }
+
+  const isOrganizer = user?.id === event.organizer.id;
+  const canEdit = isOrganizer || user?.role === 'Organizer';
+
+  return (
+    <div className="max-w-4xl mx-auto">
+      <div className="bg-white rounded-lg shadow-md p-6 mb-6">
+        <div className="flex justify-between items-start mb-4">
+          <div>
+            <span className={`inline-block px-2 py-1 text-xs rounded mb-2 ${
+              event.status === 'Published' ? 'bg-green-100 text-green-800' :
+              event.status === 'Draft' ? 'bg-yellow-100 text-yellow-800' :
+              'bg-red-100 text-red-800'
+            }`}>
+              {event.status}
+            </span>
+            <h1 className="text-3xl font-bold">{event.name}</h1>
+          </div>
+          {canEdit && (
+            <a
+              href={`/events/${event.id}/edit`}
+              className="px-4 py-2 bg-blue-600 text-white rounded-md hover:bg-blue-700"
+            >
+              Edit Event
+            </a>
+          )}
+        </div>
+
+        <div className="grid grid-cols-1 md:grid-cols-2 gap-6 mb-6">
+          <div className="space-y-3">
+            <div className="flex items-center gap-3">
+              <span className="text-2xl">📅</span>
+              <div>
+                <p className="text-sm text-gray-500">Date</p>
+                <p className="font-medium">{new Date(event.eventDate).toLocaleString()}</p>
+              </div>
+            </div>
+            <div className="flex items-center gap-3">
+              <span className="text-2xl">📍</span>
+              <div>
+                <p className="text-sm text-gray-500">Location</p>
+                <p className="font-medium">{event.location}</p>
+              </div>
+            </div>
+            <div className="flex items-center gap-3">
+              <span className="text-2xl">👥</span>
+              <div>
+                <p className="text-sm text-gray-500">Registrations</p>
+                <p className="font-medium">
+                  {event.currentRegistrations} registered
+                  {event.maxParticipants && ` / ${event.maxParticipants} max`}
+                </p>
+              </div>
+            </div>
+          </div>
+
+          <div className="space-y-3">
+            {event.category && (
+              <div className="flex items-center gap-3">
+                <span className="text-2xl">🏷️</span>
+                <div>
+                  <p className="text-sm text-gray-500">Category</p>
+                  <p className="font-medium">{event.category}</p>
+                </div>
+              </div>
+            )}
+            <div className="flex items-center gap-3">
+              <span className="text-2xl">👤</span>
+              <div>
+                <p className="text-sm text-gray-500">Organizer</p>
+                <p className="font-medium">{event.organizer.name}</p>
+              </div>
+            </div>
+            {event.tags.length > 0 && (
+              <div className="flex flex-wrap gap-2">
+                {event.tags.map((tag) => (
+                  <span key={tag} className="px-2 py-1 bg-gray-100 text-gray-700 text-sm rounded">
+                    {tag}
+                  </span>
+                ))}
+              </div>
+            )}
+          </div>
+        </div>
+
+        <div className="border-t pt-6">
+          <h2 className="text-xl font-semibold mb-3">Description</h2>
+          <p className="text-gray-700 whitespace-pre-wrap">{event.description}</p>
+        </div>
+
+        {user?.role === 'Participant' && event.status === 'Published' && (
+          <div className="border-t pt-6 mt-6">
+            <a
+              href={`/events/${event.id}/register`}
+              className="block text-center py-3 px-6 bg-green-600 text-white rounded-md hover:bg-green-700 font-semibold"
+            >
+              Register for Event
+            </a>
+          </div>
+        )}
+      </div>
+    </div>
+  );
+}

frontend/src/components/event-form.tsx

@@ -0,0 +1,187 @@
+'use client';
+
+import { useState } from 'react';
+import { api, Event } from '@/lib/api';
+import { useRouter } from 'next/navigation';
+
+interface EventFormProps {
+  event?: Event;
+}
+
+export function EventForm({ event }: EventFormProps) {
+  const [name, setName] = useState(event?.name || '');
+  const [description, setDescription] = useState(event?.description || '');
+  const [eventDate, setEventDate] = useState(event ? new Date(event.eventDate).toISOString().slice(0, 16) : '');
+  const [location, setLocation] = useState(event?.location || '');
+  const [category, setCategory] = useState(event?.category || '');
+  const [maxParticipants, setMaxParticipants] = useState(event?.maxParticipants?.toString() || '');
+  const [tags, setTags] = useState(event?.tags.join(', ') || '');
+  const [isSubmitting, setIsSubmitting] = useState(false);
+  const [error, setError] = useState<string | null>(null);
+  const router = useRouter();
+
+  const categories = ['Running', 'Cycling', 'Triathlon', 'Trail', 'Road'];
+
+  const handleSubmit = async (e: React.FormEvent) => {
+    e.preventDefault();
+    setError(null);
+    setIsSubmitting(true);
+
+    try {
+      const eventData = {
+        name,
+        description,
+        eventDate: new Date(eventDate).toISOString(),
+        location,
+        category: category || undefined,
+        maxParticipants: maxParticipants ? parseInt(maxParticipants) : undefined,
+        tags: tags.split(',').map(t => t.trim()).filter(t => t),
+      };
+
+      if (event) {
+        await api.updateEvent(event.id, eventData);
+      } else {
+        await api.createEvent(eventData);
+      }
+
+      router.push('/events');
+    } catch (err) {
+      setError(err instanceof Error ? err.message : 'Failed to save event');
+    } finally {
+      setIsSubmitting(false);
+    }
+  };
+
+  return (
+    <div className="max-w-2xl mx-auto">
+      {error && (
+        <div className="mb-4 p-3 bg-red-100 border border-red-400 text-red-700 rounded">
+          {error}
+        </div>
+      )}
+
+      <form onSubmit={handleSubmit} className="space-y-6 bg-white rounded-lg shadow-md p-6">
+        <div>
+          <label htmlFor="name" className="block text-sm font-medium text-gray-700 mb-1">
+            Event Name *
+          </label>
+          <input
+            id="name"
+            type="text"
+            value={name}
+            onChange={(e) => setName(e.target.value)}
+            required
+            className="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-blue-500"
+          />
+        </div>
+
+        <div>
+          <label htmlFor="description" className="block text-sm font-medium text-gray-700 mb-1">
+            Description
+          </label>
+          <textarea
+            id="description"
+            value={description}
+            onChange={(e) => setDescription(e.target.value)}
+            rows={4}
+            className="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-blue-500"
+          />
+        </div>
+
+        <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
+          <div>
+            <label htmlFor="eventDate" className="block text-sm font-medium text-gray-700 mb-1">
+              Event Date & Time *
+            </label>
+            <input
+              id="eventDate"
+              type="datetime-local"
+              value={eventDate}
+              onChange={(e) => setEventDate(e.target.value)}
+              required
+              className="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-blue-500"
+            />
+          </div>
+
+          <div>
+            <label htmlFor="location" className="block text-sm font-medium text-gray-700 mb-1">
+              Location *
+            </label>
+            <input
+              id="location"
+              type="text"
+              value={location}
+              onChange={(e) => setLocation(e.target.value)}
+              required
+              className="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-blue-500"
+            />
+          </div>
+        </div>
+
+        <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
+          <div>
+            <label htmlFor="category" className="block text-sm font-medium text-gray-700 mb-1">
+              Category
+            </label>
+            <select
+              id="category"
+              value={category}
+              onChange={(e) => setCategory(e.target.value)}
+              className="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-blue-500"
+            >
+              <option value="">Select Category</option>
+              {categories.map((cat) => (
+                <option key={cat} value={cat}>{cat}</option>
+              ))}
+            </select>
+          </div>
+
+          <div>
+            <label htmlFor="maxParticipants" className="block text-sm font-medium text-gray-700 mb-1">
+              Max Participants
+            </label>
+            <input
+              id="maxParticipants"
+              type="number"
+              min="1"
+              value={maxParticipants}
+              onChange={(e) => setMaxParticipants(e.target.value)}
+              className="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-blue-500"
+            />
+          </div>
+        </div>
+
+        <div>
+          <label htmlFor="tags" className="block text-sm font-medium text-gray-700 mb-1">
+            Tags (comma-separated)
+          </label>
+          <input
+            id="tags"
+            type="text"
+            value={tags}
+            onChange={(e) => setTags(e.target.value)}
+            placeholder="e.g., beginner, competitive, charity"
+            className="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-blue-500"
+          />
+        </div>
+
+        <div className="flex gap-4">
+          <button
+            type="submit"
+            disabled={isSubmitting}
+            className="flex-1 py-2 px-4 bg-blue-600 text-white rounded-md hover:bg-blue-700 disabled:bg-gray-400"
+          >
+            {isSubmitting ? 'Saving...' : (event ? 'Update Event' : 'Create Event')}
+          </button>
+          <button
+            type="button"
+            onClick={() => router.push('/events')}
+            className="py-2 px-4 bg-gray-200 text-gray-800 rounded-md hover:bg-gray-300"
+          >
+            Cancel
+          </button>
+        </div>
+      </form>
+    </div>
+  );
+}

frontend/src/components/event-list.tsx

@@ -0,0 +1,134 @@
+'use client';
+
+import { useState, useEffect } from 'react';
+import { api, Event } from '@/lib/api';
+
+export function EventList() {
+  const [events, setEvents] = useState<Event[]>([]);
+  const [isLoading, setIsLoading] = useState(true);
+  const [error, setError] = useState<string | null>(null);
+  const [category, setCategory] = useState('');
+  const [status, setStatus] = useState('');
+
+  useEffect(() => {
+    loadEvents();
+  }, [category, status]);
+
+  const loadEvents = async () => {
+    try {
+      setIsLoading(true);
+      const data = await api.getEvents({
+        category: category || undefined,
+        status: status || undefined,
+      });
+      setEvents(data);
+    } catch (err) {
+      setError(err instanceof Error ? err.message : 'Failed to load events');
+    } finally {
+      setIsLoading(false);
+    }
+  };
+
+  const categories = ['Running', 'Cycling', 'Triathlon', 'Trail', 'Road'];
+
+  if (isLoading) {
+    return <div className="text-center py-8">Loading events...</div>;
+  }
+
+  if (error) {
+    return (
+      <div className="bg-red-100 border border-red-400 text-red-700 px-4 py-3 rounded">
+        {error}
+      </div>
+    );
+  }
+
+  return (
+    <div className="space-y-6">
+      {/* Filters */}
+      <div className="flex gap-4 mb-6">
+        <select
+          value={category}
+          onChange={(e) => setCategory(e.target.value)}
+          className="px-3 py-2 border border-gray-300 rounded-md"
+        >
+          <option value="">All Categories</option>
+          {categories.map((cat) => (
+            <option key={cat} value={cat}>{cat}</option>
+          ))}
+        </select>
+        
+        <select
+          value={status}
+          onChange={(e) => setStatus(e.target.value)}
+          className="px-3 py-2 border border-gray-300 rounded-md"
+        >
+          <option value="">All Status</option>
+          <option value="Published">Published</option>
+          <option value="Draft">Draft</option>
+          <option value="Cancelled">Cancelled</option>
+        </select>
+      </div>
+
+      {/* Events Grid */}
+      {events.length === 0 ? (
+        <div className="text-center py-8 text-gray-500">No events found</div>
+      ) : (
+        <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-6">
+          {events.map((event) => (
+            <div key={event.id} className="bg-white rounded-lg shadow-md p-6 hover:shadow-lg transition-shadow">
+              <div className="flex justify-between items-start mb-2">
+                <span className={`px-2 py-1 text-xs rounded ${
+                  event.status === 'Published' ? 'bg-green-100 text-green-800' :
+                  event.status === 'Draft' ? 'bg-yellow-100 text-yellow-800' :
+                  'bg-red-100 text-red-800'
+                }`}>
+                  {event.status}
+                </span>
+                {event.category && (
+                  <span className="text-sm text-gray-500">{event.category}</span>
+                )}
+              </div>
+              
+              <h3 className="text-xl font-semibold mb-2">{event.name}</h3>
+              <p className="text-gray-600 mb-4 line-clamp-2">{event.description}</p>
+              
+              <div className="space-y-2 text-sm text-gray-500">
+                <div className="flex items-center gap-2">
+                  <span>📅</span>
+                  {new Date(event.eventDate).toLocaleDateString()}
+                </div>
+                <div className="flex items-center gap-2">
+                  <span>📍</span>
+                  {event.location}
+                </div>
+                <div className="flex items-center gap-2">
+                  <span>👥</span>
+                  {event.currentRegistrations}
+                  {event.maxParticipants && ` / ${event.maxParticipants}`} registered
+                </div>
+              </div>
+              
+              {event.tags.length > 0 && (
+                <div className="flex flex-wrap gap-2 mt-4">
+                  {event.tags.map((tag) => (
+                    <span key={tag} className="px-2 py-1 bg-gray-100 text-gray-700 text-xs rounded">
+                      {tag}
+                    </span>
+                  ))}
+                </div>
+              )}
+              
+              <a
+                href={`/events/${event.id}`}
+                className="mt-4 block text-center py-2 px-4 bg-blue-600 text-white rounded-md hover:bg-blue-700"
+              >
+                View Details
+              </a>
+            </div>
+          ))}
+        </div>
+      )}
+    </div>
+  );
+}

frontend/src/components/login-form.tsx

@@ -0,0 +1,85 @@
+'use client';
+
+import { useState } from 'react';
+import { useAuth } from '@/lib/auth-context';
+import { useRouter } from 'next/navigation';
+
+export function LoginForm() {
+  const [email, setEmail] = useState('');
+  const [password, setPassword] = useState('');
+  const [isSubmitting, setIsSubmitting] = useState(false);
+  const { login, error } = useAuth();
+  const router = useRouter();
+
+  const handleSubmit = async (e: React.FormEvent) => {
+    e.preventDefault();
+    setIsSubmitting(true);
+    
+    try {
+      await login(email, password);
+      router.push('/dashboard');
+    } catch (err) {
+      // Error is handled by auth context
+    } finally {
+      setIsSubmitting(false);
+    }
+  };
+
+  return (
+    <div className="max-w-md mx-auto mt-8 p-6 bg-white rounded-lg shadow-md">
+      <h2 className="text-2xl font-bold mb-6 text-gray-800">Login</h2>
+      
+      {error && (
+        <div className="mb-4 p-3 bg-red-100 border border-red-400 text-red-700 rounded">
+          {error}
+        </div>
+      )}
+      
+      <form onSubmit={handleSubmit} className="space-y-4">
+        <div>
+          <label htmlFor="email" className="block text-sm font-medium text-gray-700 mb-1">
+            Email
+          </label>
+          <input
+            id="email"
+            type="email"
+            value={email}
+            onChange={(e) => setEmail(e.target.value)}
+            required
+            className="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-blue-500"
+          />
+        </div>
+        
+        <div>
+          <label htmlFor="password" className="block text-sm font-medium text-gray-700 mb-1">
+            Password
+          </label>
+          <input
+            id="password"
+            type="password"
+            value={password}
+            onChange={(e) => setPassword(e.target.value)}
+            required
+            minLength={8}
+            className="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-blue-500"
+          />
+        </div>
+        
+        <button
+          type="submit"
+          disabled={isSubmitting}
+          className="w-full py-2 px-4 bg-blue-600 text-white rounded-md hover:bg-blue-700 disabled:bg-gray-400 transition-colors"
+        >
+          {isSubmitting ? 'Logging in...' : 'Login'}
+        </button>
+      </form>
+      
+      <p className="mt-4 text-center text-sm text-gray-600">
+        Don&apos;t have an account?{' '}
+        <a href="/register" className="text-blue-600 hover:underline">
+          Register
+        </a>
+      </p>
+    </div>
+  );
+}

frontend/src/components/navigation.tsx

@@ -0,0 +1,56 @@
+'use client';
+
+import { useAuth } from '@/lib/auth-context';
+
+export function Navigation() {
+  const { user, logout, isAuthenticated } = useAuth();
+
+  return (
+    <nav className="bg-white shadow-sm border-b">
+      <div className="max-w-7xl mx-auto px-4">
+        <div className="flex justify-between items-center h-16">
+          <div className="flex items-center gap-8">
+            <a href="/" className="text-xl font-bold text-blue-600">
+              RacePlanner
+            </a>
+            <a href="/events" className="text-gray-700 hover:text-blue-600">
+              Events
+            </a>
+          </div>
+
+          <div className="flex items-center gap-4">
+            {isAuthenticated ? (
+              <>
+                <a href="/dashboard" className="text-gray-700 hover:text-blue-600">
+                  Dashboard
+                </a>
+                <a href="/registrations" className="text-gray-700 hover:text-blue-600">
+                  My Registrations
+                </a>
+                <span className="text-sm text-gray-500">{user?.name}</span>
+                <button
+                  onClick={logout}
+                  className="px-4 py-2 text-sm text-red-600 hover:text-red-700"
+                >
+                  Logout
+                </button>
+              </>
+            ) : (
+              <>
+                <a href="/login" className="text-gray-700 hover:text-blue-600">
+                  Login
+                </a>
+                <a
+                  href="/register"
+                  className="px-4 py-2 bg-blue-600 text-white rounded-md hover:bg-blue-700 text-sm"
+                >
+                  Register
+                </a>
+              </>
+            )}
+          </div>
+        </div>
+      </div>
+    </nav>
+  );
+}

frontend/src/components/payment-form.tsx

@@ -0,0 +1,120 @@
+'use client';
+
+import { useState } from 'react';
+import { api } from '@/lib/api';
+import { useRouter } from 'next/navigation';
+
+interface PaymentFormProps {
+  registrationId: string;
+}
+
+export function PaymentForm({ registrationId }: PaymentFormProps) {
+  const [amount, setAmount] = useState('');
+  const [method, setMethod] = useState('Cash');
+  const [transactionId, setTransactionId] = useState('');
+  const [notes, setNotes] = useState('');
+  const [isSubmitting, setIsSubmitting] = useState(false);
+  const [error, setError] = useState<string | null>(null);
+  const router = useRouter();
+
+  const handleSubmit = async (e: React.FormEvent) => {
+    e.preventDefault();
+    setError(null);
+    setIsSubmitting(true);
+
+    try {
+      await api.recordPayment(
+        registrationId,
+        parseFloat(amount),
+        method,
+        transactionId || undefined,
+        notes || undefined
+      );
+      router.push('/registrations');
+    } catch (err) {
+      setError(err instanceof Error ? err.message : 'Payment failed');
+    } finally {
+      setIsSubmitting(false);
+    }
+  };
+
+  return (
+    <div className="max-w-md mx-auto">
+      {error && (
+        <div className="mb-4 p-3 bg-red-100 border border-red-400 text-red-700 rounded">
+          {error}
+        </div>
+      )}
+
+      <form onSubmit={handleSubmit} className="bg-white rounded-lg shadow-md p-6 space-y-4">
+        <h2 className="text-xl font-bold mb-4">Record Payment</h2>
+        
+        <div>
+          <label htmlFor="amount" className="block text-sm font-medium text-gray-700 mb-1">
+            Amount ($)
+          </label>
+          <input
+            id="amount"
+            type="number"
+            step="0.01"
+            min="0.01"
+            value={amount}
+            onChange={(e) => setAmount(e.target.value)}
+            required
+            className="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-blue-500"
+          />
+        </div>
+
+        <div>
+          <label htmlFor="method" className="block text-sm font-medium text-gray-700 mb-1">
+            Payment Method
+          </label>
+          <select
+            id="method"
+            value={method}
+            onChange={(e) => setMethod(e.target.value)}
+            className="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-blue-500"
+          >
+            <option value="Cash">Cash</option>
+            <option value="Online">Online</option>
+            <option value="Transfer">Transfer</option>
+          </select>
+        </div>
+
+        <div>
+          <label htmlFor="transactionId" className="block text-sm font-medium text-gray-700 mb-1">
+            Transaction ID (optional)
+          </label>
+          <input
+            id="transactionId"
+            type="text"
+            value={transactionId}
+            onChange={(e) => setTransactionId(e.target.value)}
+            className="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-blue-500"
+          />
+        </div>
+
+        <div>
+          <label htmlFor="notes" className="block text-sm font-medium text-gray-700 mb-1">
+            Notes (optional)
+          </label>
+          <textarea
+            id="notes"
+            value={notes}
+            onChange={(e) => setNotes(e.target.value)}
+            rows={3}
+            className="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-blue-500"
+          />
+        </div>
+
+        <button
+          type="submit"
+          disabled={isSubmitting}
+          className="w-full py-2 px-4 bg-green-600 text-white rounded-md hover:bg-green-700 disabled:bg-gray-400"
+        >
+          {isSubmitting ? 'Recording...' : 'Record Payment'}
+        </button>
+      </form>
+    </div>
+  );
+}

frontend/src/components/register-form.tsx

@@ -0,0 +1,145 @@
+'use client';
+
+import { useState } from 'react';
+import { useAuth } from '@/lib/auth-context';
+import { useRouter } from 'next/navigation';
+
+export function RegisterForm() {
+  const [email, setEmail] = useState('');
+  const [password, setPassword] = useState('');
+  const [confirmPassword, setConfirmPassword] = useState('');
+  const [name, setName] = useState('');
+  const [role, setRole] = useState<'Organizer' | 'Participant'>('Participant');
+  const [isSubmitting, setIsSubmitting] = useState(false);
+  const [validationError, setValidationError] = useState<string | null>(null);
+  const { register, error } = useAuth();
+  const router = useRouter();
+
+  const handleSubmit = async (e: React.FormEvent) => {
+    e.preventDefault();
+    setValidationError(null);
+    
+    if (password !== confirmPassword) {
+      setValidationError('Passwords do not match');
+      return;
+    }
+    
+    if (password.length < 8) {
+      setValidationError('Password must be at least 8 characters');
+      return;
+    }
+    
+    setIsSubmitting(true);
+    
+    try {
+      await register(email, password, name, role);
+      router.push('/dashboard');
+    } catch (err) {
+      // Error is handled by auth context
+    } finally {
+      setIsSubmitting(false);
+    }
+  };
+
+  return (
+    <div className="max-w-md mx-auto mt-8 p-6 bg-white rounded-lg shadow-md">
+      <h2 className="text-2xl font-bold mb-6 text-gray-800">Register</h2>
+      
+      {(error || validationError) && (
+        <div className="mb-4 p-3 bg-red-100 border border-red-400 text-red-700 rounded">
+          {error || validationError}
+        </div>
+      )}
+      
+      <form onSubmit={handleSubmit} className="space-y-4">
+        <div>
+          <label htmlFor="name" className="block text-sm font-medium text-gray-700 mb-1">
+            Full Name
+          </label>
+          <input
+            id="name"
+            type="text"
+            value={name}
+            onChange={(e) => setName(e.target.value)}
+            required
+            className="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-blue-500"
+          />
+        </div>
+        
+        <div>
+          <label htmlFor="email" className="block text-sm font-medium text-gray-700 mb-1">
+            Email
+          </label>
+          <input
+            id="email"
+            type="email"
+            value={email}
+            onChange={(e) => setEmail(e.target.value)}
+            required
+            className="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-blue-500"
+          />
+        </div>
+        
+        <div>
+          <label htmlFor="password" className="block text-sm font-medium text-gray-700 mb-1">
+            Password
+          </label>
+          <input
+            id="password"
+            type="password"
+            value={password}
+            onChange={(e) => setPassword(e.target.value)}
+            required
+            minLength={8}
+            className="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-blue-500"
+          />
+        </div>
+        
+        <div>
+          <label htmlFor="confirmPassword" className="block text-sm font-medium text-gray-700 mb-1">
+            Confirm Password
+          </label>
+          <input
+            id="confirmPassword"
+            type="password"
+            value={confirmPassword}
+            onChange={(e) => setConfirmPassword(e.target.value)}
+            required
+            minLength={8}
+            className="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-blue-500"
+          />
+        </div>
+        
+        <div>
+          <label htmlFor="role" className="block text-sm font-medium text-gray-700 mb-1">
+            Account Type
+          </label>
+          <select
+            id="role"
+            value={role}
+            onChange={(e) => setRole(e.target.value as 'Organizer' | 'Participant')}
+            className="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-blue-500"
+          >
+            <option value="Participant">Participant</option>
+            <option value="Organizer">Organizer</option>
+          </select>
+        </div>
+        
+        <button
+          type="submit"
+          disabled={isSubmitting}
+          className="w-full py-2 px-4 bg-blue-600 text-white rounded-md hover:bg-blue-700 disabled:bg-gray-400 transition-colors"
+        >
+          {isSubmitting ? 'Registering...' : 'Register'}
+        </button>
+      </form>
+      
+      <p className="mt-4 text-center text-sm text-gray-600">
+        Already have an account?{' '}
+        <a href="/login" className="text-blue-600 hover:underline">
+          Login
+        </a>
+      </p>
+    </div>
+  );
+}

frontend/src/components/registration-form.tsx

@@ -0,0 +1,83 @@
+'use client';
+
+import { useState } from 'react';
+import { api } from '@/lib/api';
+import { useRouter } from 'next/navigation';
+
+interface RegistrationFormProps {
+  eventId: string;
+  eventName: string;
+}
+
+export function RegistrationForm({ eventId, eventName }: RegistrationFormProps) {
+  const [category, setCategory] = useState('');
+  const [emergencyContact, setEmergencyContact] = useState('');
+  const [isSubmitting, setIsSubmitting] = useState(false);
+  const [error, setError] = useState<string | null>(null);
+  const router = useRouter();
+
+  const handleSubmit = async (e: React.FormEvent) => {
+    e.preventDefault();
+    setError(null);
+    setIsSubmitting(true);
+
+    try {
+      await api.createRegistration(eventId, category || undefined, emergencyContact || undefined);
+      router.push('/registrations');
+    } catch (err) {
+      setError(err instanceof Error ? err.message : 'Registration failed');
+    } finally {
+      setIsSubmitting(false);
+    }
+  };
+
+  return (
+    <div className="max-w-md mx-auto">
+      {error && (
+        <div className="mb-4 p-3 bg-red-100 border border-red-400 text-red-700 rounded">
+          {error}
+        </div>
+      )}
+
+      <form onSubmit={handleSubmit} className="bg-white rounded-lg shadow-md p-6 space-y-4">
+        <h2 className="text-xl font-bold mb-4">Register for {eventName}</h2>
+        
+        <div>
+          <label htmlFor="category" className="block text-sm font-medium text-gray-700 mb-1">
+            Category (optional)
+          </label>
+          <input
+            id="category"
+            type="text"
+            value={category}
+            onChange={(e) => setCategory(e.target.value)}
+            placeholder="e.g., Elite, Amateur, Junior"
+            className="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-blue-500"
+          />
+        </div>
+
+        <div>
+          <label htmlFor="emergencyContact" className="block text-sm font-medium text-gray-700 mb-1">
+            Emergency Contact
+          </label>
+          <input
+            id="emergencyContact"
+            type="text"
+            value={emergencyContact}
+            onChange={(e) => setEmergencyContact(e.target.value)}
+            placeholder="Name and phone number"
+            className="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-blue-500"
+          />
+        </div>
+
+        <button
+          type="submit"
+          disabled={isSubmitting}
+          className="w-full py-2 px-4 bg-green-600 text-white rounded-md hover:bg-green-700 disabled:bg-gray-400"
+        >
+          {isSubmitting ? 'Registering...' : 'Complete Registration'}
+        </button>
+      </form>
+    </div>
+  );
+}

frontend/src/components/registration-list.tsx

@@ -0,0 +1,124 @@
+'use client';
+
+import { useState, useEffect } from 'react';
+import { api, Registration } from '@/lib/api';
+import { useAuth } from '@/lib/auth-context';
+
+export function RegistrationList() {
+  const [registrations, setRegistrations] = useState<Registration[]>([]);
+  const [isLoading, setIsLoading] = useState(true);
+  const [error, setError] = useState<string | null>(null);
+  const { user } = useAuth();
+
+  useEffect(() => {
+    loadRegistrations();
+  }, []);
+
+  const loadRegistrations = async () => {
+    try {
+      setIsLoading(true);
+      const data = await api.getMyRegistrations();
+      setRegistrations(data);
+    } catch (err) {
+      setError(err instanceof Error ? err.message : 'Failed to load registrations');
+    } finally {
+      setIsLoading(false);
+    }
+  };
+
+  const handleCancel = async (id: string) => {
+    if (!confirm('Are you sure you want to cancel this registration?')) {
+      return;
+    }
+    
+    try {
+      await api.cancelRegistration(id);
+      loadRegistrations();
+    } catch (err) {
+      setError(err instanceof Error ? err.message : 'Failed to cancel registration');
+    }
+  };
+
+  const getStatusColor = (status: string) => {
+    switch (status) {
+      case 'Confirmed':
+        return 'bg-green-100 text-green-800';
+      case 'Pending':
+        return 'bg-yellow-100 text-yellow-800';
+      case 'Cancelled':
+        return 'bg-red-100 text-red-800';
+      default:
+        return 'bg-gray-100 text-gray-800';
+    }
+  };
+
+  if (isLoading) {
+    return <div className="text-center py-8">Loading registrations...</div>;
+  }
+
+  if (error) {
+    return (
+      <div className="bg-red-100 border border-red-400 text-red-700 px-4 py-3 rounded">
+        {error}
+      </div>
+    );
+  }
+
+  return (
+    <div className="space-y-6">
+      {registrations.length === 0 ? (
+        <div className="text-center py-8 text-gray-500">
+          <p className="mb-4">You haven&apos;t registered for any events yet.</p>
+          <a href="/events" className="text-blue-600 hover:underline">
+            Browse events
+          </a>
+        </div>
+      ) : (
+        <div className="space-y-4">
+          {registrations.map((registration) => (
+            <div key={registration.id} className="bg-white rounded-lg shadow-md p-6">
+              <div className="flex justify-between items-start">
+                <div>
+                  <div className="flex items-center gap-2 mb-2">
+                    <span className={`px-2 py-1 text-xs rounded ${getStatusColor(registration.status)}`}>
+                      {registration.status}
+                    </span>
+                    <span className="text-sm text-gray-500">
+                      {new Date(registration.eventDate).toLocaleDateString()}
+                    </span>
+                  </div>
+                  <h3 className="text-xl font-semibold mb-2">{registration.eventName}</h3>
+                  <p className="text-sm text-gray-500 mb-2">
+                    Registered: {new Date(registration.registeredAt).toLocaleDateString()}
+                  </p>
+                  {registration.totalPaid > 0 && (
+                    <p className="text-sm text-green-600">
+                      Paid: ${registration.totalPaid.toFixed(2)}
+                    </p>
+                  )}
+                </div>
+                
+                <div className="flex flex-col gap-2">
+                  <a
+                    href={`/events/${registration.eventId}`}
+                    className="px-4 py-2 bg-blue-600 text-white rounded-md hover:bg-blue-700 text-sm text-center"
+                  >
+                    View Event
+                  </a>
+                  {registration.status !== 'Cancelled' && registration.status !== 'Completed' && (
+                    <button
+                      onClick={() => handleCancel(registration.id)}
+                      className="px-4 py-2 border border-red-500 text-red-500 rounded-md hover:bg-red-50 text-sm"
+                    >
+                      Cancel
+                    </button>
+                  )}
+                </div>
+              </div>
+            </div>
+          ))}
+        </div>
+      )}
+    </div>
+  );
+}

frontend/src/lib/api.ts

@@ -0,0 +1,245 @@
+const API_URL = process.env.NEXT_PUBLIC_API_URL || 'http://localhost:5000/api';
+
+// Types
+export interface User {
+  id: string;
+  email: string;
+  name: string;
+  role: 'Organizer' | 'Participant';
+}
+
+export interface AuthResponse {
+  token: string;
+  user: User;
+}
+
+export interface Event {
+  id: string;
+  name: string;
+  description: string;
+  eventDate: string;
+  location: string;
+  status: 'Draft' | 'Published' | 'Cancelled' | 'Completed';
+  category?: string;
+  tags: string[];
+  maxParticipants?: number;
+  currentRegistrations: number;
+  createdAt: string;
+  updatedAt: string;
+  organizer: User;
+}
+
+export interface Registration {
+  id: string;
+  eventId: string;
+  eventName: string;
+  eventDate: string;
+  participantId: string;
+  participantName: string;
+  participantEmail: string;
+  status: string;
+  category?: string;
+  emergencyContact?: string;
+  createdAt: string;
+  updatedAt?: string;
+  totalPaid: number;
+  amountDue: number;
+}
+
+export interface Announcement {
+  id: string;
+  eventId: string;
+  eventName: string;
+  title: string;
+  content: string;
+  authorId: string;
+  authorName: string;
+  createdAt: string;
+  updatedAt?: string;
+  isPublished: boolean;
+}
+
+export interface PaymentReport {
+  eventId: string;
+  eventName: string;
+  totalCollected: number;
+  totalPending: number;
+  totalOutstanding: number;
+  totalRegistrations: number;
+  paidRegistrations: number;
+  partialRegistrations: number;
+  unpaidRegistrations: number;
+}
+
+// API Client
+class ApiClient {
+  private token: string | null = null;
+
+  constructor() {
+    if (typeof window !== 'undefined') {
+      this.token = localStorage.getItem('token');
+    }
+  }
+
+  setToken(token: string) {
+    this.token = token;
+    if (typeof window !== 'undefined') {
+      localStorage.setItem('token', token);
+    }
+  }
+
+  clearToken() {
+    this.token = null;
+    if (typeof window !== 'undefined') {
+      localStorage.removeItem('token');
+    }
+  }
+
+  getToken(): string | null {
+    return this.token;
+  }
+
+  private async fetch(endpoint: string, options: RequestInit = {}) {
+    const url = `${API_URL}${endpoint}`;
+    const headers: Record<string, string> = {
+      'Content-Type': 'application/json',
+      ...((options.headers as Record<string, string>) || {}),
+    };
+
+    if (this.token) {
+      headers['Authorization'] = `Bearer ${this.token}`;
+    }
+
+    const response = await fetch(url, {
+      ...options,
+      headers,
+    });
+
+    if (!response.ok) {
+      const error = await response.json().catch(() => ({ error: 'Unknown error' }));
+      throw new Error(error.error || `HTTP ${response.status}`);
+    }
+
+    if (response.status === 204) {
+      return null;
+    }
+
+    return response.json();
+  }
+
+  // Auth
+  async register(email: string, password: string, name: string, role: 'Organizer' | 'Participant' = 'Participant') {
+    const data = await this.fetch('/auth/register', {
+      method: 'POST',
+      body: JSON.stringify({ email, password, name, role }),
+    });
+    this.setToken(data.token);
+    return data as AuthResponse;
+  }
+
+  async login(email: string, password: string) {
+    const data = await this.fetch('/auth/login', {
+      method: 'POST',
+      body: JSON.stringify({ email, password }),
+    });
+    this.setToken(data.token);
+    return data as AuthResponse;
+  }
+
+  logout() {
+    this.clearToken();
+  }
+
+  // Events
+  async getEvents(filters?: { category?: string; status?: string; fromDate?: string; toDate?: string }) {
+    const params = new URLSearchParams();
+    if (filters?.category) params.append('category', filters.category);
+    if (filters?.status) params.append('status', filters.status);
+    if (filters?.fromDate) params.append('fromDate', filters.fromDate);
+    if (filters?.toDate) params.append('toDate', filters.toDate);
+    
+    const query = params.toString();
+    return this.fetch(`/events${query ? `?${query}` : ''}`) as Promise<Event[]>;
+  }
+
+  async getEvent(id: string) {
+    return this.fetch(`/events/${id}`) as Promise<Event>;
+  }
+
+  async createEvent(event: Partial<Event>) {
+    return this.fetch('/events', {
+      method: 'POST',
+      body: JSON.stringify(event),
+    }) as Promise<Event>;
+  }
+
+  async updateEvent(id: string, event: Partial<Event>) {
+    return this.fetch(`/events/${id}`, {
+      method: 'PUT',
+      body: JSON.stringify(event),
+    }) as Promise<Event>;
+  }
+
+  async deleteEvent(id: string) {
+    return this.fetch(`/events/${id}`, {
+      method: 'DELETE',
+    });
+  }
+
+  // Registrations
+  async createRegistration(eventId: string, category?: string, emergencyContact?: string) {
+    return this.fetch('/registrations', {
+      method: 'POST',
+      body: JSON.stringify({ eventId, category, emergencyContact }),
+    }) as Promise<Registration>;
+  }
+
+  async getMyRegistrations() {
+    return this.fetch('/registrations/my-registrations') as Promise<Registration[]>;
+  }
+
+  async getEventRegistrations(eventId: string) {
+    return this.fetch(`/registrations/event/${eventId}`) as Promise<Registration[]>;
+  }
+
+  async cancelRegistration(id: string) {
+    return this.fetch(`/registrations/${id}/cancel`, {
+      method: 'POST',
+    }) as Promise<Registration>;
+  }
+
+  // Payments
+  async recordPayment(registrationId: string, amount: number, method: string, transactionId?: string, notes?: string) {
+    return this.fetch('/payments', {
+      method: 'POST',
+      body: JSON.stringify({ registrationId, amount, method, transactionId, notes }),
+    });
+  }
+
+  async getPaymentReport(eventId: string) {
+    return this.fetch(`/payments/event/${eventId}/report`) as Promise<PaymentReport>;
+  }
+
+  // Announcements
+  async getEventAnnouncements(eventId: string) {
+    return this.fetch(`/announcements/event/${eventId}`) as Promise<Announcement[]>;
+  }
+
+  async createAnnouncement(eventId: string, title: string, content: string) {
+    return this.fetch('/announcements', {
+      method: 'POST',
+      body: JSON.stringify({ eventId, title, content }),
+    }) as Promise<Announcement>;
+  }
+
+  // Dashboard
+  async getOrganizerDashboard() {
+    return this.fetch('/dashboard/organizer');
+  }
+
+  async getParticipantDashboard() {
+    return this.fetch('/dashboard/participant');
+  }
+}
+
+export const api = new ApiClient();

frontend/src/lib/auth-context.tsx

@@ -0,0 +1,92 @@
+'use client';
+
+import React, { createContext, useContext, useState, useEffect, ReactNode } from 'react';
+import { api, User, AuthResponse } from './api';
+
+interface AuthContextType {
+  user: User | null;
+  isLoading: boolean;
+  isAuthenticated: boolean;
+  login: (email: string, password: string) => Promise<void>;
+  register: (email: string, password: string, name: string, role: 'Organizer' | 'Participant') => Promise<void>;
+  logout: () => void;
+  error: string | null;
+}
+
+const AuthContext = createContext<AuthContextType | undefined>(undefined);
+
+export function AuthProvider({ children }: { children: ReactNode }) {
+  const [user, setUser] = useState<User | null>(null);
+  const [isLoading, setIsLoading] = useState(true);
+  const [error, setError] = useState<string | null>(null);
+
+  useEffect(() => {
+    // Check for existing token on mount
+    const token = api.getToken();
+    if (token) {
+      // Token exists, user is authenticated
+      // In a real app, you might want to validate the token
+      setIsLoading(false);
+    } else {
+      setIsLoading(false);
+    }
+  }, []);
+
+  const login = async (email: string, password: string) => {
+    try {
+      setError(null);
+      setIsLoading(true);
+      const response = await api.login(email, password);
+      setUser(response.user);
+    } catch (err) {
+      setError(err instanceof Error ? err.message : 'Login failed');
+      throw err;
+    } finally {
+      setIsLoading(false);
+    }
+  };
+
+  const register = async (email: string, password: string, name: string, role: 'Organizer' | 'Participant') => {
+    try {
+      setError(null);
+      setIsLoading(true);
+      const response = await api.register(email, password, name, role);
+      setUser(response.user);
+    } catch (err) {
+      setError(err instanceof Error ? err.message : 'Registration failed');
+      throw err;
+    } finally {
+      setIsLoading(false);
+    }
+  };
+
+  const logout = () => {
+    api.logout();
+    setUser(null);
+    setError(null);
+  };
+
+  return (
+    <AuthContext.Provider
+      value={{
+        user,
+        isLoading,
+        isAuthenticated: !!user,
+        login,
+        register,
+        logout,
+        error,
+      }}
+    >
+      {children}
+    </AuthContext.Provider>
+  );
+}
+
+export function useAuth() {
+  const context = useContext(AuthContext);
+  if (context === undefined) {
+    throw new Error('useAuth must be used within an AuthProvider');
+  }
+  return context;
+}

openspec/changes/archive/2025-04-03-new-raceplanner-app/tasks.md

@@ -0,0 +1,84 @@
+## 1. Project Setup
+
+- [x] 1.1 Initialize project structure with backend and frontend directories
+- [x] 1.2 Setup .NET backend (ASP.NET Core Web API with C#)
+- [x] 1.3 Setup Next.js frontend with TypeScript using Bun runtime
+- [x] 1.4 Configure ESLint and Prettier for frontend
+- [x] 1.5 Setup Entity Framework Core with PostgreSQL
+- [x] 1.6 Create initial database schema migration (EF Core)
+
+## 2. Database Schema
+
+- [x] 2.1 Create users table with roles
+- [x] 2.2 Create events table with organizer foreign key
+- [x] 2.3 Create registrations table with event and user foreign keys
+- [x] 2.4 Create payments table with registration foreign key
+- [x] 2.5 Create announcements table with event foreign key
+- [x] 2.6 Add database indexes for common queries
+
+## 3. User Authentication (user-auth)
+
+- [x] 3.1 Implement user registration endpoint
+- [x] 3.2 Implement user login endpoint with JWT
+- [x] 3.3 Create authentication middleware
+- [x] 3.4 Implement role-based access control middleware
+- [x] 3.5 Create registration form component
+- [x] 3.6 Create login form component
+- [x] 3.7 Implement logout functionality
+
+## 4. Event Management (event-management)
+
+- [x] 4.1 Implement create event endpoint
+- [x] 4.2 Implement update event endpoint
+- [x] 4.3 Implement list events endpoint with filtering
+- [x] 4.4 Implement get event details endpoint
+- [x] 4.5 Create event creation form component
+- [x] 4.6 Create event editing form component
+- [x] 4.7 Create event list view with filters
+- [x] 4.8 Create event detail view
+
+## 5. Registration System (registration-system)
+
+- [x] 5.1 Implement registration endpoint
+- [x] 5.2 Implement registration status update endpoint
+- [x] 5.3 Implement cancel registration endpoint
+- [x] 5.4 Create registration form component
+- [x] 5.5 Create my registrations list component
+- [x] 5.6 Implement registration status display
+
+## 6. Payment Tracking (payment-tracking)
+
+- [x] 6.1 Implement record payment endpoint
+- [x] 6.2 Implement payment status endpoint
+- [x] 6.3 Implement payment report endpoint
+- [x] 6.4 Create payment recording form component
+- [x] 6.5 Create payment status display component
+- [x] 6.6 Create payment report view
+
+## 7. Announcements (announcements)
+
+- [x] 7.1 Implement create announcement endpoint
+- [x] 7.2 Implement edit announcement endpoint
+- [x] 7.3 Implement delete announcement endpoint
+- [x] 7.4 Implement list announcements endpoint
+- [x] 7.5 Create announcement creation form
+- [x] 7.6 Create announcement list component
+- [ ] 7.7 Implement notification system
+
+## 8. Dashboard (dashboard)
+
+- [x] 8.1 Implement organizer metrics endpoint
+- [x] 8.2 Implement participant registrations endpoint
+- [x] 8.3 Create organizer dashboard component
+- [x] 8.4 Create participant dashboard component
+- [x] 8.5 Add quick action buttons
+
+## 9. Integration and Polish
+
+- [x] 9.1 Connect frontend to all backend endpoints
+- [x] 9.2 Add error handling and loading states
+- [x] 9.3 Implement responsive design
+- [x] 9.4 Add form validation feedback
+- [x] 9.5 Setup email service for notifications
+- [x] 9.6 Add basic unit tests for critical paths
+- [x] 9.7 Create deployment configuration

openspec/changes/new-raceplanner-app/tasks.md

@@ -1,84 +0,0 @@
-## 1. Project Setup
-
-- [x] 1.1 Initialize project structure with backend and frontend directories
-- [x] 1.2 Setup .NET backend (ASP.NET Core Web API with C#)
-- [x] 1.3 Setup Next.js frontend with TypeScript using Bun runtime
-- [x] 1.4 Configure ESLint and Prettier for frontend
-- [x] 1.5 Setup Entity Framework Core with PostgreSQL
-- [x] 1.6 Create initial database schema migration (EF Core)
-
-## 2. Database Schema
-
-- [x] 2.1 Create users table with roles
-- [x] 2.2 Create events table with organizer foreign key
-- [x] 2.3 Create registrations table with event and user foreign keys
-- [x] 2.4 Create payments table with registration foreign key
-- [x] 2.5 Create announcements table with event foreign key
-- [x] 2.6 Add database indexes for common queries
-
-## 3. User Authentication (user-auth)
-
-- [ ] 3.1 Implement user registration endpoint
-- [ ] 3.2 Implement user login endpoint with JWT
-- [ ] 3.3 Create authentication middleware
-- [ ] 3.4 Implement role-based access control middleware
-- [ ] 3.5 Create registration form component
-- [ ] 3.6 Create login form component
-- [ ] 3.7 Implement logout functionality
-
-## 4. Event Management (event-management)
-
-- [ ] 4.1 Implement create event endpoint
-- [ ] 4.2 Implement update event endpoint
-- [ ] 4.3 Implement list events endpoint with filtering
-- [ ] 4.4 Implement get event details endpoint
-- [ ] 4.5 Create event creation form component
-- [ ] 4.6 Create event editing form component
-- [ ] 4.7 Create event list view with filters
-- [ ] 4.8 Create event detail view
-
-## 5. Registration System (registration-system)
-
-- [ ] 5.1 Implement registration endpoint
-- [ ] 5.2 Implement registration status update endpoint
-- [ ] 5.3 Implement cancel registration endpoint
-- [ ] 5.4 Create registration form component
-- [ ] 5.5 Create my registrations list component
-- [ ] 5.6 Implement registration status display
-
-## 6. Payment Tracking (payment-tracking)
-
-- [ ] 6.1 Implement record payment endpoint
-- [ ] 6.2 Implement payment status endpoint
-- [ ] 6.3 Implement payment report endpoint
-- [ ] 6.4 Create payment recording form component
-- [ ] 6.5 Create payment status display component
-- [ ] 6.6 Create payment report view
-
-## 7. Announcements (announcements)
-
-- [ ] 7.1 Implement create announcement endpoint
-- [ ] 7.2 Implement edit announcement endpoint
-- [ ] 7.3 Implement delete announcement endpoint
-- [ ] 7.4 Implement list announcements endpoint
-- [ ] 7.5 Create announcement creation form
-- [ ] 7.6 Create announcement list component
-- [ ] 7.7 Implement notification system
-
-## 8. Dashboard (dashboard)
-
-- [ ] 8.1 Implement organizer metrics endpoint
-- [ ] 8.2 Implement participant registrations endpoint
-- [ ] 8.3 Create organizer dashboard component
-- [ ] 8.4 Create participant dashboard component
-- [ ] 8.5 Add quick action buttons
-
-## 9. Integration and Polish
-
-- [ ] 9.1 Connect frontend to all backend endpoints
-- [ ] 9.2 Add error handling and loading states
-- [ ] 9.3 Implement responsive design
-- [ ] 9.4 Add form validation feedback
-- [ ] 9.5 Setup email service for notifications
-- [ ] 9.6 Add basic unit tests for critical paths
-- [ ] 9.7 Create deployment configuration