import 'dart:convert';
import 'package:get/get.dart';
import 'package:marco/helpers/services/app_logger.dart';
import 'package:marco/helpers/services/tenant_service.dart';
import 'package:marco/helpers/services/storage/local_storage.dart';
import 'package:marco/model/tenant/tenant_list_model.dart';
import 'package:marco/helpers/widgets/my_snackbar.dart';

class TenantSelectionController extends GetxController {
  final TenantService _tenantService = TenantService();

  var tenants = <Tenant>[].obs;
  var isLoading = false.obs;

  @override
  void onInit() {
    super.onInit();
    _checkExistingTenant();
  }

  /// Check if a tenant was previously selected
  Future<void> _checkExistingTenant() async {
    try {
      final savedTenant = await TenantService.loadSavedTenant();
      if (savedTenant != null) {
        // Tenant already selected → go to dashboard
        Get.offAllNamed('/dashboard');
      } else {
        // No tenant saved → load from API
        await loadTenants();
      }
    } catch (e, st) {
      logSafe("❌ Error checking saved tenant",
          level: LogLevel.error, error: e, stackTrace: st);
      await loadTenants();
    }
  }

  /// Load tenants from API
  Future<void> loadTenants() async {
    isLoading.value = true;
    try {
      final data = await _tenantService.getTenants();
      if (data != null && data.isNotEmpty) {
        tenants.value = data.map((e) => Tenant.fromJson(e)).toList();

        // Auto-select if only one tenant
        if (tenants.length == 1) {
          await onTenantSelected(tenants.first.id);
        }
      } else {
        tenants.clear();
        logSafe("⚠️ No tenants found for the user.", level: LogLevel.warning);
      }
    } catch (e, st) {
      logSafe("❌ Exception in loadTenants",
          level: LogLevel.error, error: e, stackTrace: st);
      tenants.clear();
    } finally {
      isLoading.value = false;
    }
  }

  /// Handle tenant selection
  Future<void> onTenantSelected(String tenantId) async {
    isLoading.value = true;
    try {
      final success = await _tenantService.selectTenant(tenantId);
      if (success) {
        final tenant = tenants.firstWhere((t) => t.id == tenantId);

        // Save selected tenant in TenantService and LocalStorage
        TenantService.setSelectedTenant(tenant);
        await LocalStorage.saveString(
            'selectedTenant', jsonEncode(tenant.toJson()));

        // Navigate to dashboard
        Get.offAllNamed('/dashboard');

        showAppSnackbar(
          title: "Success",
          message: "Organization selected successfully.",
          type: SnackbarType.success,
        );
      } else {
        showAppSnackbar(
          title: "Error",
          message: "Unable to select organization. Please try again.",
          type: SnackbarType.error,
        );
      }
    } catch (e, st) {
      logSafe("❌ Exception in onTenantSelected",
          level: LogLevel.error, error: e, stackTrace: st);

      showAppSnackbar(
        title: "Error",
        message: "An unexpected error occurred while selecting organization.",
        type: SnackbarType.error,
      );
    } finally {
      isLoading.value = false;
    }
  }
}