import 'package:flutter_riverpod/flutter_riverpod.dart';
import '../services/api_service.dart';
import '../services/sync/agente_sync_service.dart';
import '../services/sync/cliente_sync_service.dart';
import '../services/sync/ordine_sync_service.dart';
import '../services/sync/filiale_sync_service.dart';
import '../services/sync/reference_sync_service.dart';
import '../services/image_service.dart';
import 'database_provider.dart';

final apiServiceProvider = Provider<ApiService>((ref) {
  final parametriDao = ref.read(parametriDaoProvider);
  return ApiService(parametriDao);
});

final imageServiceProvider = Provider<ImageService>((ref) {
  final parametriDao = ref.read(parametriDaoProvider);
  return ImageService(parametriDao);
});

final agenteSyncServiceProvider = Provider<AgenteSyncService>((ref) {
  return AgenteSyncService(ref.read(apiServiceProvider));
});

final clienteSyncServiceProvider = Provider<ClienteSyncService>((ref) {
  final api = ref.read(apiServiceProvider);
  final clientiDao = ref.read(clientiDaoProvider);
  final clientiAgenteDao = ref.read(clientiAgenteDaoProvider);
  return ClienteSyncService(api, clientiDao, clientiAgenteDao);
});

final ordineSyncServiceProvider = Provider<OrdineSyncService>((ref) {
  return OrdineSyncService(
    ref.read(apiServiceProvider),
    ref.read(ordiniDaoProvider),
    ref.read(clientiDaoProvider),
    ref.read(filialiDaoProvider),
  );
});

final filialeSyncServiceProvider = Provider<FilialeSyncService>((ref) {
  return FilialeSyncService(
    ref.read(apiServiceProvider),
    ref.read(filialiDaoProvider),
    ref.read(clientiDaoProvider),
  );
});

final referenceSyncServiceProvider = Provider<ReferenceSyncService>((ref) {
  return ReferenceSyncService(
    ref.read(apiServiceProvider),
    ref.read(tabelleDaoProvider),
    ref.read(pagamentiDaoProvider),
    ref.read(scontiDaoProvider),
    ref.read(articoliDaoProvider),
    ref.read(listiniDaoProvider),
    ref.read(promozioniDaoProvider),
    ref.read(scadenzeDaoProvider),
    ref.read(statisticheDaoProvider),
    ref.read(parametriDaoProvider),
    ref.read(clientiDaoProvider),
  );
});

class SyncState {
  final bool isSyncing;
  final double progress;
  final String message;
  final String? error;

  const SyncState({
    this.isSyncing = false,
    this.progress = 0,
    this.message = '',
    this.error,
  });
}

class SyncNotifier extends Notifier<SyncState> {
  @override
  SyncState build() => const SyncState();

  Future<void> startFullSync(int idAgente, String codAgente, {bool forceFullSync = false}) async {
    state = const SyncState(isSyncing: true, message: 'Avvio sincronizzazione...');
    try {
      final parametriDao = ref.read(parametriDaoProvider);
      final ordineSync = ref.read(ordineSyncServiceProvider);
      final filialeSync = ref.read(filialeSyncServiceProvider);
      final clienteSync = ref.read(clienteSyncServiceProvider);
      final refSync = ref.read(referenceSyncServiceProvider);

      final lastUpdateStr = forceFullSync
          ? '200001010000'
          : (await parametriDao.read('lastUpdate') ?? '200001010000');

      await clienteSync.uploadNewCustomers(idAgente, codAgente);
      _update('Clienti inviati', 0.12);
      await clienteSync.downloadCustomers(idAgente, codAgente, lastUpdateStr);
      _update('Clienti attivi scaricati', 0.16);
      await filialeSync.uploadNewDestinations(idAgente, codAgente);
      _update('Destinazioni inviate', 0.18);
      await filialeSync.downloadDestinations(idAgente, codAgente, lastUpdateStr);
      _update('Destinazioni scaricate', 0.20);
      await ordineSync.uploadNewOrders(idAgente, codAgente);
      _update('Ordini inviati', 0.22);

      await Future.wait([
        refSync.downloadTabelle(lastUpdateStr),
        refSync.downloadPagamenti(lastUpdateStr),
        refSync.downloadSconti(lastUpdateStr),
        refSync.downloadArticoli(lastUpdateStr),
        refSync.downloadListini(lastUpdateStr),
        refSync.downloadListiniArticolo(lastUpdateStr),
        refSync.downloadPromozioni(lastUpdateStr),
        refSync.downloadStatistiche(idAgente, codAgente, lastUpdateStr),
      ]);
      _update('Dati di riferimento scaricati', 0.60);

      await Future.wait([
        refSync.downloadScadenze(idAgente, codAgente, lastUpdateStr),
        refSync.downloadListiniCliente(idAgente, codAgente, lastUpdateStr),
        refSync.downloadScontiCliente(idAgente, codAgente, lastUpdateStr),
        ordineSync.downloadRemoteOrders(idAgente, codAgente, lastUpdateStr),
      ]);
      _update('Dati per agente scaricati', 0.92);

      await refSync.downloadParametro('PALLET_PERC');
      _update('Parametri verificati', 0.98);

      final now = DateTime.now();
      final newLastUpdate =
          '${now.year}${_pad(now.month)}${_pad(now.day)}${_pad(now.hour)}${_pad(now.minute)}';
      await parametriDao.set('lastUpdate', newLastUpdate);

      state = const SyncState(message: 'Sincronizzazione completata!', progress: 1.0);
    } catch (e) {
      state = SyncState(error: e.toString(), message: 'Errore durante la sincronizzazione');
    }
  }

  String _pad(int n) => n.toString().padLeft(2, '0');

  void _update(String msg, double progress) {
    state = SyncState(isSyncing: true, message: msg, progress: progress);
  }
}

final syncProvider = NotifierProvider<SyncNotifier, SyncState>(SyncNotifier.new);