58 lines
2.4 KiB
Plaintext
58 lines
2.4 KiB
Plaintext
CONTRACT PARITY ANALYSIS: SHIFT vs TASK SELF-ASSIGNMENT
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========================================================
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SHIFT SELF-ASSIGNMENT MUTATION PATH:
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------------------------------------
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Hook: useSignUpShift() in frontend/src/hooks/useShifts.ts:104-120
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Endpoint: POST /api/shifts/{shiftId}/signup
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Method: Server-side inference of current member via session
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Body: Empty (no explicit memberId sent)
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Permission: Member role (inferred from endpoint access control)
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Pattern: shift.signups.some((s) => s.memberId === session?.user?.id)
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TASK UPDATE MUTATION PATH:
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---------------------------
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Hook: useUpdateTask() in frontend/src/hooks/useTasks.ts:109-116
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Endpoint: PATCH /api/tasks/{id}
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Interface: UpdateTaskRequest (lines 41-47) with assigneeId?: string
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Method: Client explicitly sends assigneeId in request body
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Permission: Assumed member role (no explicit gate observed)
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Existing usage: assigneeId field exists in Task, CreateTaskRequest, UpdateTaskRequest
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ASSIGNMENT SEMANTICS COMPARISON:
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---------------------------------
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Shift: Implicit self-assignment via POST to /signup endpoint
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Task: Explicit assigneeId field update via PATCH with assigneeId in body
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MEMBER ROLE PERMISSION ASSUMPTION:
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-----------------------------------
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Both flows assume member role can:
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1. Sign up for shifts (POST /api/shifts/{id}/signup)
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2. Update task assigneeId field (PATCH /api/tasks/{id} with assigneeId)
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DETECTION PATTERN FOR "ASSIGN TO ME" BUTTON:
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--------------------------------------------
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Shift: isSignedUp = shift.signups.some((s) => s.memberId === session?.user?.id)
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Task equivalent: task.assigneeId === session?.user?.id
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CONTRACT COMPATIBILITY:
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-----------------------
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✓ UpdateTaskRequest.assigneeId field exists and accepts string
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✓ useUpdateTask mutation supports arbitrary UpdateTaskRequest fields
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✓ Task model includes assigneeId: string | null
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✓ No observed frontend restrictions on member role updating assigneeId
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DECISION:
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---------
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PARITY CONFIRMED: Task self-assignment flow should use:
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- Mutation: useUpdateTask({ id: taskId, data: { assigneeId: session.user.id } })
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- Detection: task.assigneeId === session?.user?.id
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- Button label: "Assign to Me" (when not assigned) / "Unassign Me" (when assigned)
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BACKEND VERIFICATION REQUIRED:
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-------------------------------
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Backend policy must permit member role to:
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1. PATCH /api/tasks/{id} with assigneeId field
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2. Set assigneeId to self (current member id)
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(Deferred to T8 - conditional backend policy adjustment task)
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