import { NextResponse } from "next/server";
import { auth } from "@/lib/auth";
import { geofenceDb } from "@/lib/geofence-db";

// GET /api/geofences/events - List all geofence events for the authenticated user
export async function GET(request: Request) {
  try {
    const session = await auth();

    if (!session?.user) {
      return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
    }

    const userId = (session.user as any).id;

    // Get all geofences owned by this user
    const userGeofences = geofenceDb.findByOwner(userId);
    const geofenceIds = userGeofences.map((g) => g.id);

    if (geofenceIds.length === 0) {
      return NextResponse.json({
        success: true,
        events: [],
        total: 0,
      });
    }

    // Parse query parameters
    const { searchParams } = new URL(request.url);
    const deviceId = searchParams.get("deviceId") || undefined;
    const geofenceId = searchParams.get("geofenceId") || undefined;
    const limit = parseInt(searchParams.get("limit") || "100");

    // Get events (filtered by user's geofences)
    let events = geofenceDb.findEvents({
      deviceId,
      geofenceId,
      limit,
    });

    // Filter to only events from user's geofences
    events = events.filter((event) => geofenceIds.includes(event.geofence_id));

    // Enrich events with geofence and device names
    const enrichedEvents = events.map((event) => {
      const geofence = userGeofences.find((g) => g.id === event.geofence_id);
      return {
        ...event,
        geofenceName: geofence?.name || "Unknown",
        geofenceColor: geofence?.color || "#gray",
      };
    });

    return NextResponse.json({
      success: true,
      events: enrichedEvents,
      total: enrichedEvents.length,
    });
  } catch (error) {
    console.error("[GET /api/geofences/events] Error:", error);
    return NextResponse.json(
      {
        error: "Failed to fetch geofence events",
        details: error instanceof Error ? error.message : "Unknown error",
      },
      { status: 500 }
    );
  }
}