const { query, toISODate, closePool, dbReady } = require('./db');
const Cycle = require('../models/Cycle');
const Camera = require('../models/Camera');
const ApiKey = require('../models/ApiKey');
const crypto = require('crypto');

// Helper function to hash API keys
function hashApiKey(key) {
  return crypto.createHash('sha256').update(key).digest('hex');
}

// Helper function to generate API key
function generateApiKey() {
  const randomBytes = crypto.randomBytes(24);
  return 'cpa_' + randomBytes.toString('hex');
}

// Seed data - minimal cycles with no assumed data
const cycles = [
  {
    id: 'CYCLE-JBW-2025-05-20',
    totalDays: 42,
    currentDay: 42,
    startDate: new Date('2025-05-20'),
    status: 'Completed',
    docInCount: null,
    chickInWeight: null,
  },
  {
    id: 'CYCLE-JBW-2025-07-11',
    totalDays: 42,
    currentDay: 42,
    startDate: new Date('2025-07-11'),
    status: 'Completed',
    docInCount: null,
    chickInWeight: null,
  },
  {
    id: 'CYCLE-JBW-2025-10-22',
    totalDays: 42,
    currentDay: 42,
    startDate: new Date('2025-10-22'),
    status: 'Completed',
    docInCount: null,
    chickInWeight: null,
  },
  {
    id: 'CYCLE-JBW-2025-12-10',
    totalDays: 42,
    currentDay: 42,
    startDate: new Date('2025-12-10'),
    status: 'Completed',
    docInCount: null,
    chickInWeight: null,
  },
  {
    id: 'CYCLE-JBW-2026-02-09',
    totalDays: 42,
    currentDay: 2,
    startDate: new Date('2026-02-09'),
    status: 'Active',
    docInCount: 20000,
    chickInWeight: null,
  },
];

// Location hierarchy seed data
const locations = [
  {
    id: 'loc1',
    name: 'Peternakan Pusat, Jawa Barat',
    address: 'Jl. Peternakan No. 123, Bandung, Jawa Barat',
  },
];

const coops = [
  {
    id: 'coop1',
    name: 'Kandang A (Broiler)',
    locationId: 'loc1',
    capacity: 15000,
  },
  {
    id: 'coop2',
    name: 'Kandang B (Layer)',
    locationId: 'loc1',
    capacity: 12000,
  },
];

const floors = [
  {
    id: 'floor1',
    name: 'Lantai 1',
    coopId: 'coop1',
    floorNumber: 1,
  },
  {
    id: 'floor2',
    name: 'Lantai 2',
    coopId: 'coop1',
    floorNumber: 2,
  },
  {
    id: 'floor3',
    name: 'Lantai 1',
    coopId: 'coop2',
    floorNumber: 1,
  },
];

const cameras = [
  {
    id: 'cam1',
    name: 'Kamera Sudut Kanan Zona A',
    cameraType: 'STANDARD',
    floorId: 'floor1',
    model: 'HIK-2MP-IR',
    status: 'online',
  },
  {
    id: 'cam2',
    name: 'Kamera Sudut Kiri Zona A',
    cameraType: 'STANDARD',
    floorId: 'floor1',
    model: 'HIK-2MP-IR',
    status: 'online',
  },
  {
    id: 'cam3',
    name: 'Kamera Tengah Zona B',
    cameraType: 'INFRARED',
    floorId: 'floor2',
    model: 'HIK-4MP-IR',
    status: 'online',
  },
  {
    id: 'cam4',
    name: 'Kamera Pintu Masuk',
    cameraType: 'STANDARD',
    floorId: 'floor2',
    model: 'HIK-2MP',
    status: 'online',
  },
  {
    id: 'cam5',
    name: 'Kamera Zona Layer 1',
    cameraType: 'STANDARD',
    floorId: 'floor3',
    model: 'HIK-2MP-IR',
    status: 'online',
  },
];

async function seedDatabase() {
  try {
    // Wait for schema to be initialized before querying
    await dbReady;

    // Check if cycles already exist
    const existingCycles = await query('SELECT COUNT(*) as count FROM cycles', []);
    const cycleCount = parseInt(existingCycles.rows[0].count);

    if (cycleCount > 0) {
      return;
    }

    // Insert locations (skip if already exist)
    for (const loc of locations) {
      await query(
        'INSERT INTO locations (id, name, address) VALUES ($1, $2, $3) ON CONFLICT (id) DO NOTHING',
        [loc.id, loc.name, loc.address || null]
      );
    }

    // Insert coops (skip if already exist)
    for (const coop of coops) {
      await query(
        'INSERT INTO coops (id, name, location_id, capacity) VALUES ($1, $2, $3, $4) ON CONFLICT (id) DO NOTHING',
        [coop.id, coop.name, coop.locationId, coop.capacity || null]
      );
    }

    // Insert floors (skip if already exist)
    for (const floor of floors) {
      await query(
        'INSERT INTO floors (id, name, coop_id, floor_number) VALUES ($1, $2, $3, $4) ON CONFLICT (id) DO NOTHING',
        [floor.id, floor.name, floor.coopId, floor.floorNumber || null]
      );
    }
    for (const cam of cameras) {
      await Camera.create({
        id: cam.id,
        name: cam.name,
        cameraType: cam.cameraType,
        floorId: cam.floorId || null,
        model: cam.model || null,
        status: cam.status,
      });
    }
    for (const cycle of cycles) {
      const endDate = new Date(cycle.startDate);
      endDate.setDate(endDate.getDate() + cycle.totalDays - 1);

      await Cycle.create({
        id: cycle.id,
        totalDays: cycle.totalDays,
        currentDay: cycle.currentDay,
        startDate: cycle.startDate,
        endDate: endDate,
        chickInWeight: cycle.chickInWeight,
        docInCount: cycle.docInCount,
        status: cycle.status,
      });
    }

    // Display seeded cycles
    const seededCycles = await Cycle.getAll();
    seededCycles.forEach((c) => {});
    const devKey = generateApiKey();
    const keyHash = hashApiKey(devKey);
    const keyId = 'apk_dev_' + Date.now();

    await query(
      `INSERT INTO api_keys (id, key_hash, name, description, created_by, is_active)
             VALUES ($1, $2, $3, $4, $5, $6)`,
      [
        keyId,
        keyHash,
        'Development Key',
        'Auto-generated key for testing and development',
        'seed-script',
        1,
      ]
    );
  } catch (error) {
    console.error('✗ Error seeding database:', error.message);
    console.error(error.stack);
    throw error;
  }
}

// Run seed if this file is executed directly
if (require.main === module) {
  seedDatabase()
    .then(() => {
      return closePool();
    })
    .then(() => {
      process.exit(0);
    })
    .catch((error) => {
      console.error('Fatal error:', error);
      closePool().then(() => {
        process.exit(1);
      });
    });
}

module.exports = { seedDatabase };