import { createClient } from '@supabase/supabase-js'

import { NextResponse } from 'next/server'

const facilityTypes = {
  0: "OBS",
  1: "FSS",
  2: "DEL",
  3: "GND",
  4: "TWR",
  5: "APP",
  6: "CTR",
} as const;

// Define FIR coverage
const CZQM_AIRPORTS = ["CYHZ", "CYFC", "CYQM", "CYSJ", "CYZX", "CYYG", "CYYT", "CYQX", "CYYR", "LFVP", "CYQI", "CYAY", "CYDF", "CYJT"];

export async function GET() {
  try {
    // Fetch current VATSIM data
    const response = await fetch('https://data.vatsim.net/v3/vatsim-data.json');
    if (!response.ok) throw new Error('Failed to fetch VATSIM data');
    const data = await response.json();

    const supabase = createClient(process.env.NEXT_PUBLIC_SUPABASE_URL, process.env.NEXT_SECRET_SUPABASE_KEY)

    // Filter controllers in CZQM airspace
    const czqmControllers = data.controllers.filter((controller: any) => {
      const callsign = controller.callsign;
      // console.log(callsign)
      return callsign.startsWith('CZQM_') ||
             callsign.startsWith('CZQX_') || 
             CZQM_AIRPORTS.some(airport => callsign.startsWith(airport));
    });
    
    // Process each controller
    for (const controller of czqmControllers) {
      const facilityType = facilityTypes[controller.facility as keyof typeof facilityTypes];
      const airport = CZQM_AIRPORTS.find(ap => controller.callsign.startsWith(ap)) || 'CZQM';
      
      // Insert or update controller session
      const { error } = await supabase
        .from('controller_sessions')
        .upsert({
          cid: controller.cid,
          name: controller.name,
          callsign: controller.callsign,
          facility_type: facilityType,
          frequency: controller.frequency,
          airport: airport,
          last_seen: new Date().toISOString(),
          logon_time: controller.logon_time,
        });

      if (error) {
        console.error('Error updating controller session:', error);
      }
    }

    // Clean up old sessions (controllers who have logged off)
    const fiveMinutesAgo = new Date(Date.now() - 5 * 60 * 1000).toISOString();
    const { error: cleanupError } = await supabase
      .from('controller_sessions')
      .delete()
      .lt('last_seen', fiveMinutesAgo);

    if (cleanupError) {
      console.error('Error cleaning up old sessions:', cleanupError);
    }

    return NextResponse.json({ success: true });
  } catch (error) {
    console.error('Error in controller update:', error);
    return NextResponse.json({ error: 'Failed to update controller data' }, { status: 500 });
  }
}