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

// PATCH /api/geofences/[id] - Update a geofence
export async function PATCH(
  request: Request,
  { params }: { params: Promise<{ id: string }> }
) {
  try {
    const session = await auth();

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

    const userId = (session.user as any).id;
    const { id: geofenceId } = await params;

    // Check if geofence exists
    const geofence = geofenceDb.findById(geofenceId);

    if (!geofence) {
      return NextResponse.json(
        { error: "Geofence not found" },
        { status: 404 }
      );
    }

    // Check ownership
    if (geofence.owner_id !== userId) {
      return NextResponse.json(
        { error: "Forbidden: You can only update your own geofences" },
        { status: 403 }
      );
    }

    // Parse request body
    const body = await request.json();
    const { name, description, radius_meters, color, is_active } = body;

    // Build updates object with only provided fields
    const updates: any = {};
    if (name !== undefined) updates.name = name;
    if (description !== undefined) updates.description = description;
    if (radius_meters !== undefined) updates.radius_meters = radius_meters;
    if (color !== undefined) updates.color = color;
    if (is_active !== undefined) updates.is_active = is_active;

    // Validate updates if provided
    if (radius_meters !== undefined) {
      if (typeof radius_meters !== 'number' || radius_meters < 50 || radius_meters > 50000) {
        return NextResponse.json(
          { error: "Invalid radius_meters (must be between 50 and 50000)" },
          { status: 400 }
        );
      }
    }

    // Update geofence
    const updatedGeofence = geofenceDb.update(geofenceId, updates);

    if (!updatedGeofence) {
      return NextResponse.json(
        { error: "Failed to update geofence" },
        { status: 500 }
      );
    }

    console.log(`[PATCH /api/geofences/${geofenceId}] Updated geofence ${updatedGeofence.name} for user ${userId}`);

    return NextResponse.json({
      success: true,
      geofence: updatedGeofence,
    });
  } catch (error) {
    console.error(`[PATCH /api/geofences/[id]] Error:`, error);
    return NextResponse.json(
      {
        error: "Failed to update geofence",
        details: error instanceof Error ? error.message : "Unknown error",
      },
      { status: 500 }
    );
  }
}

// DELETE /api/geofences/[id] - Delete a geofence
export async function DELETE(
  request: Request,
  { params }: { params: Promise<{ id: string }> }
) {
  try {
    const session = await auth();

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

    const userId = (session.user as any).id;
    const { id: geofenceId } = await params;

    // Check if geofence exists
    const geofence = geofenceDb.findById(geofenceId);

    if (!geofence) {
      return NextResponse.json(
        { error: "Geofence not found" },
        { status: 404 }
      );
    }

    // Check ownership
    if (geofence.owner_id !== userId) {
      return NextResponse.json(
        { error: "Forbidden: You can only delete your own geofences" },
        { status: 403 }
      );
    }

    // Delete geofence (CASCADE will delete related events and status)
    const deleted = geofenceDb.delete(geofenceId);

    if (!deleted) {
      return NextResponse.json(
        { error: "Failed to delete geofence" },
        { status: 500 }
      );
    }

    console.log(`[DELETE /api/geofences/${geofenceId}] Deleted geofence ${geofence.name} for user ${userId}`);

    return NextResponse.json({
      success: true,
      message: "Geofence deleted successfully",
    });
  } catch (error) {
    console.error(`[DELETE /api/geofences/[id]] Error:`, error);
    return NextResponse.json(
      {
        error: "Failed to delete geofence",
        details: error instanceof Error ? error.message : "Unknown error",
      },
      { status: 500 }
    );
  }
}