import { Vehicle } from "./api";

export function getVehicleDisplayStatus(vehicle: Vehicle): 'Online' | 'Offline' | 'Updating' | string {
    // Calculate status: Offline if no heartbeat for 5s
    let lastHeartbeatStr = vehicle.lastHeartbeat;
    // Fix timezone if missing Z
    if (!lastHeartbeatStr.endsWith('Z')) {
        lastHeartbeatStr += 'Z';
    }
    const lastHeartbeatDate = new Date(lastHeartbeatStr);
    const diffMs = Date.now() - lastHeartbeatDate.getTime();

    let displayStatus = vehicle.status;
    if (displayStatus === 'Online' && diffMs > 5000) {
        displayStatus = 'Offline';
    }
    return displayStatus;
}