import { Product, City, PaymentMethod, Order, SupplierPost, StoreSettings, Supplier, MonitoredWhatsAppGroup, User } from '@/types';

export const INITIAL_SUPPLIERS: Supplier[] = [
  {
    "id": "sup-jovic",
    "name": "💎 2️⃣ DIFUSIÓN JOVIC STORE COLOMBIA🍀",
    "phone": "573167455877",
    "contactPerson": "Asesor Jovic Store",
    "address": "Centro / Bodega Cali",
    "notes": "Proveedor oficial Nike, Jordan, Nocta y Vomero calidades Top.",
    "isActive": true
  },
  {
    "id": "sup-ccmio",
    "name": "EXCLUSIVE CC MÍO 3B",
    "phone": "573159876543",
    "contactPerson": "Despachos CC MÍO 3B",
    "address": "CC MÍO Local 3B, Cali",
    "notes": "Especialista en Adidas, Coach, Timberland y Skatewear.",
    "isActive": true
  },
  {
    "id": "sup-central",
    "name": "BODEGA CENTRAL MAYORISTA",
    "phone": "573101234567",
    "contactPerson": "Logística Despachos",
    "address": "San Andresito / Cali",
    "notes": "Despacho rápido en 24 horas para separación inmediata.",
    "isActive": true
  }
];

export const INITIAL_CITIES: City[] = [
  {
    id: 'city-cali',
    name: 'Cali',
    department: 'Valle del Cauca',
    shippingCost: 0,
    deliveryTime: 'Entrega en 24 Horas (Domicilio Local)',
    allowsContraentrega: true,
    firstExchangeFree: true,
    exchangePolicyNote: '1er Cambio de Talla 100% GRATIS en Cali (posteriores con flete estándar)',
  },
  {
    id: 'city-jamundi',
    name: 'Jamundí',
    department: 'Valle del Cauca',
    shippingCost: 5000,
    deliveryTime: 'Entrega en 24 Horas',
    allowsContraentrega: true,
    firstExchangeFree: true,
    exchangePolicyNote: '1er Cambio de Talla 100% GRATIS en Jamundí (posteriores con flete estándar)',
  },
  {
    id: 'city-palmira',
    name: 'Palmira',
    department: 'Valle del Cauca',
    shippingCost: 7000,
    deliveryTime: 'Entrega en 24 Horas',
    allowsContraentrega: true,
    firstExchangeFree: true,
    exchangePolicyNote: '1er Cambio de Talla 100% GRATIS en Palmira (posteriores con flete estándar)',
  },
  {
    id: 'city-yumbo',
    name: 'Yumbo',
    department: 'Valle del Cauca',
    shippingCost: 5000,
    deliveryTime: 'Entrega en 24 Horas',
    allowsContraentrega: true,
    firstExchangeFree: true,
    exchangePolicyNote: '1er Cambio de Talla 100% GRATIS en Yumbo (posteriores con flete estándar)',
  },
  {
    id: 'city-bogota',
    name: 'Bogotá D.C.',
    department: 'Cundinamarca',
    shippingCost: 12000,
    deliveryTime: '2 a 3 días hábiles',
    allowsContraentrega: true,
    firstExchangeFree: false,
    exchangePolicyNote: 'Cambio de talla garantizado (flete logístico asumido por el cliente)',
  },
  {
    id: 'city-medellin',
    name: 'Medellín',
    department: 'Antioquia',
    shippingCost: 12000,
    deliveryTime: '2 a 3 días hábiles',
    allowsContraentrega: true,
    firstExchangeFree: false,
    exchangePolicyNote: 'Cambio de talla garantizado (flete logístico asumido por el cliente)',
  },
  {
    id: 'city-barranquilla',
    name: 'Barranquilla',
    department: 'Atlántico',
    shippingCost: 14000,
    deliveryTime: '3 a 4 días hábiles',
    allowsContraentrega: true,
    firstExchangeFree: false,
    exchangePolicyNote: 'Cambio de talla garantizado (flete logístico asumido por el cliente)',
  },
  {
    id: 'city-nacional',
    name: 'Otras Ciudades / Resto del País',
    department: 'Colombia',
    shippingCost: 15000,
    deliveryTime: '2 a 5 días hábiles',
    allowsContraentrega: false,
    firstExchangeFree: false,
    exchangePolicyNote: 'Cambio de talla garantizado (flete nacional asumido por el cliente)',
  },
];

// Métodos de Pago configurables por el Admin
export const INITIAL_PAYMENT_METHODS: PaymentMethod[] = [
  {
    id: 'pay-bold-link',
    name: 'Bold.co • PSE, Tarjetas Débito/Crédito, Nequi o QR (Oficial)',
    type: 'bold',
    description: 'Paga de forma rápida y 100% segura con tu cuenta Bold. Acepta PSE, Tarjetas Visa/Mastercard y QR de cualquier banco.',
    requiresDeposit: false,
    depositAmount: 0,
    boldPaymentLink: 'https://bold.co/p/carlos-lasso',
    accountInfo: 'Pasarela Oficial Bold.co • PSE / Tarjetas / QR',
    isActive: true,
  },
  {
    id: 'pay-deposit-10k',
    name: 'Separación con $10.000 + Saldo Contraentrega',
    type: 'contraentrega',
    description: 'Asegura tu talla con solo $10.000 COP vía Bold/Nequi/Daviplata y cancelas el saldo restante en efectivo o transferencia cuando el mensajero llegue a tu casa.',
    requiresDeposit: true,
    depositAmount: 10000,
    accountInfo: 'Nequi / Daviplata Oficial: 316 745 5877 (Carlos Andrés Lasso)',
    boldPaymentLink: 'https://bold.co/p/carlos-lasso',
    isActive: true,
  },
  {
    id: 'pay-cod-full',
    name: 'Pago 100% Contraentrega (Cali y Alrededores)',
    type: 'contraentrega',
    description: 'Pagas el 100% del valor total al recibir en tu puerta (válido para entregas urbanas en 24 horas).',
    requiresDeposit: false,
    depositAmount: 0,
    isActive: true,
  },
  {
    id: 'pay-nequi-full',
    name: 'Transferencia Total Anticipada Nequi / Daviplata',
    type: 'nequi',
    description: 'Paga el 100% anticipado y recibe prioridad de despacho express en 24 horas.',
    requiresDeposit: false,
    depositAmount: 0,
    accountInfo: 'Nequi / Daviplata: 316 745 5877 (Carlos Andrés Lasso)',
    isActive: true,
  },
];

export const INITIAL_PRODUCTS: Product[] = [];

export const INITIAL_SUPPLIER_POSTS: SupplierPost[] = [
  {
    id: 'post-1',
    channelName: 'DIFUSION JOVIC STORE',
    supplierName: 'DIFUSION JOVIC STORE',
    supplierPhone: '573134848203',
    rawMessage: `🔥 DISPONIBLE HOY 🔥\nNike Air Force 1 All White\nTallas: 37 al 43\nMayorista: $90.000 c/u\nDespacho inmediato Cali`,
    rawImages: [
      'https://images.unsplash.com/photo-1595950653106-6c9ebd614d3a?auto=format&fit=crop&w=800&q=80',
    ],
    extractedProduct: {
      name: 'Nike Air Force 1 Low 07 White Triple',
      brand: 'Nike',
      sizes: ['37', '38', '39', '40', '41', '42', '43'],
      supplierPrice: 90000,
      suggestedRetailPrice: 125000,
      category: 'Sneakers / Urbano',
      confidence: 0.96,
      supplierName: 'DIFUSION JOVIC STORE',
      supplierPhone: '573134848203',
    },
    status: 'published_store',
    receivedAt: 'Hoy, 09:15 AM',
  },
  {
    id: 'post-2',
    channelName: 'EXCLUSIVE CC MIO 3B',
    supplierName: 'EXCLUSIVE CC MIO 3B',
    supplierPhone: '573159876543',
    rawMessage: `👟 JORDAN 4 MILITARY BLACK 👟\nFull calidad AAA, caja original\nTallas 38 a 43\nPrecio: $95.000\nDomicilio pago contraentrega`,
    rawImages: [
      'https://images.unsplash.com/photo-1584735935682-2f2b69dff9d2?auto=format&fit=crop&w=800&q=80',
    ],
    extractedProduct: {
      name: 'Air Jordan 4 Retro Military Black',
      brand: 'Jordan',
      sizes: ['38', '39', '40', '41', '42', '43'],
      supplierPrice: 95000,
      suggestedRetailPrice: 130000,
      category: 'Sneakers / Colección',
      confidence: 0.94,
      supplierName: 'EXCLUSIVE CC MIO 3B',
      supplierPhone: '573159876543',
    },
    status: 'published_store',
    receivedAt: 'Hoy, 10:40 AM',
  },
];


export const INITIAL_MONITORED_GROUPS: MonitoredWhatsAppGroup[] = [
  {
    id: 'grp-jovic',
    jid: '120363049363072784@g.us',
    name: '💎 2️⃣ DIFUSIÓN JOVIC STORE COLOMBIA🍀',
    isMonitored: true,
    supplierId: 'sup-jovic',
    supplierName: '💎 2️⃣ DIFUSIÓN JOVIC STORE COLOMBIA🍀',
    profitMarginOverride: 35,
    autoPublish: true,
    participantsCount: 450,
    notes: 'Proveedor oficial Nike, Jordan, Vomero, Nocta y AF1.',
  },
  {
    id: 'grp-ccmio',
    jid: '120363024823901923@g.us',
    name: 'EXCLUSIVE CC MÍO 3B',
    isMonitored: true,
    supplierId: 'sup-ccmio',
    supplierName: 'EXCLUSIVE CC MÍO 3B',
    profitMarginOverride: 35,
    autoPublish: true,
    participantsCount: 380,
    notes: 'Proveedor oficial Adidas, Coach, Timberland y Skatewear.',
  },
];

export const INITIAL_ORDERS: Order[] = [
  {
    id: 'ORD-8921',
    customerName: 'Mateo Valencia',
    customerPhone: '3168945120',
    address: 'Av 6N # 24N-32 Edificio Granada Real',
    cityId: 'city-cali',
    cityName: 'Cali (Norte - Granada)',
    items: [
      {
        productId: 'snk-jordan4-1',
        productName: 'Nike Air Jordan 4 Retro White Cement',
        brand: 'Jordan',
        size: '41',
        quantity: 1,
        price: 135000,
        supplierPrice: 95000,
        supplierName: '💎 2️⃣ DIFUSIÓN JOVIC STORE COLOMBIA🍀',
        supplierPhone: '573134848203',
        image: 'https://images.unsplash.com/photo-1584735935682-2f2b69dff9d2?auto=format&fit=crop&w=800&q=80',
      },
    ],
    subtotal: 135000,
    shippingCost: 0,
    totalAmount: 135000,
    depositAmount: 10000,
    balanceDue: 125000,
    paymentMethodId: 'pay-contraentrega',
    paymentMethodName: 'Contraentrega Efectivo / Nequi',
    status: 'pending',
    createdAt: 'Hoy, 06:45 AM',
    notes: 'Timbrar en apto 302. Paga con billete de 100 y 50.',
  },
  {
    id: 'ORD-8922',
    customerName: 'Valentina Restrepo',
    customerPhone: '3157829401',
    address: 'Calle 52N # 4BN-15 Casa 4 La Flora',
    cityId: 'city-cali',
    cityName: 'Cali (Norte - La Flora)',
    items: [
      {
        productId: 'snk-vomero5-1',
        productName: 'Nike Zoom Vomero 5 Photon Dust Metallic Silver',
        brand: 'Nike',
        size: '39',
        quantity: 1,
        price: 130000,
        supplierPrice: 90000,
        supplierName: '💎 2️⃣ DIFUSIÓN JOVIC STORE COLOMBIA🍀',
        supplierPhone: '573134848203',
        image: 'https://images.unsplash.com/photo-1600185365926-3a2ce3cdb9eb?auto=format&fit=crop&w=800&q=80',
      },
    ],
    subtotal: 130000,
    shippingCost: 0,
    totalAmount: 130000,
    depositAmount: 10000,
    balanceDue: 120000,
    paymentMethodId: 'pay-contraentrega',
    paymentMethodName: 'Contraentrega Nequi',
    status: 'pending',
    createdAt: 'Hoy, 07:15 AM',
    notes: 'Dejar en portería si no contesta.',
  },
  {
    id: 'ORD-8923',
    customerName: 'Santiago Henao',
    customerPhone: '3186523910',
    address: 'Cra 105 # 14-45 Condominio Portal de la Viga',
    cityId: 'city-cali',
    cityName: 'Cali (Sur - Ciudad Jardín)',
    items: [
      {
        productId: 'snk-campus-1',
        productName: 'Adidas Campus 00s Core Black White',
        brand: 'Adidas',
        size: '40',
        quantity: 1,
        price: 125000,
        supplierPrice: 85000,
        supplierName: 'EXCLUSIVE CC MÍO 3B',
        supplierPhone: '573159876543',
        image: 'https://images.unsplash.com/photo-1525966222134-fcfa99b8ae77?auto=format&fit=crop&w=800&q=80',
      },
    ],
    subtotal: 125000,
    shippingCost: 0,
    totalAmount: 125000,
    depositAmount: 10000,
    balanceDue: 115000,
    paymentMethodId: 'pay-contraentrega',
    paymentMethodName: 'Contraentrega',
    status: 'pending',
    createdAt: 'Hoy, 07:30 AM',
    notes: 'Recibe en horas de la tarde después de las 2 PM.',
  },
  {
    id: 'ORD-8924',
    customerName: 'Camila Ospina',
    customerPhone: '3114958203',
    address: 'Cra 85E # 14-80 Apto 501 El Ingenio',
    cityId: 'city-cali',
    cityName: 'Cali (Sur - El Ingenio)',
    items: [
      {
        productId: 'snk-coach-1',
        productName: 'Coach Low Top Monogram Signature Brown',
        brand: 'Coach',
        size: '38',
        quantity: 1,
        price: 145000,
        supplierPrice: 100000,
        supplierName: 'EXCLUSIVE CC MÍO 3B',
        supplierPhone: '573159876543',
        image: 'https://images.unsplash.com/photo-1595950653106-6c9ebd614d3a?auto=format&fit=crop&w=800&q=80',
      },
    ],
    subtotal: 145000,
    shippingCost: 0,
    totalAmount: 145000,
    depositAmount: 10000,
    balanceDue: 135000,
    paymentMethodId: 'pay-contraentrega',
    paymentMethodName: 'Separación Pagada Bold',
    status: 'deposit_received',
    createdAt: 'Hoy, 08:00 AM',
    notes: 'Cliente ya pagó $10.000 de anticipo.',
  },
  {
    id: 'ORD-8925',
    customerName: 'Daniel Caicedo',
    customerPhone: '3174829105',
    address: 'Cra 10 # 3-45 San Antonio',
    cityId: 'city-cali',
    cityName: 'Cali (Oeste - San Antonio)',
    items: [
      {
        productId: 'snk-af1-1',
        productName: 'Nike Air Force 1 07 Low Triple White',
        brand: 'Nike',
        size: '42',
        quantity: 1,
        price: 120000,
        supplierPrice: 80000,
        supplierName: '💎 2️⃣ DIFUSIÓN JOVIC STORE COLOMBIA🍀',
        supplierPhone: '573134848203',
        image: 'https://images.unsplash.com/photo-1595950653106-6c9ebd614d3a?auto=format&fit=crop&w=800&q=80',
      },
    ],
    subtotal: 120000,
    shippingCost: 0,
    totalAmount: 120000,
    depositAmount: 10000,
    balanceDue: 110000,
    paymentMethodId: 'pay-contraentrega',
    paymentMethodName: 'Contraentrega',
    status: 'pending',
    createdAt: 'Hoy, 08:20 AM',
  },
];

class DataService {
  private products: Product[] = [...INITIAL_PRODUCTS];
  private cities: City[] = [...INITIAL_CITIES];
  private paymentMethods: PaymentMethod[] = [...INITIAL_PAYMENT_METHODS];
  private suppliers: Supplier[] = [...INITIAL_SUPPLIERS];
  private orders: Order[] = [...INITIAL_ORDERS];
  private supplierPosts: SupplierPost[] = [...INITIAL_SUPPLIER_POSTS];

  getProducts(): Product[] {
    return this.products;
  }

  getProductById(id: string): Product | undefined {
    return this.products.find((p) => p.id === id);
  }

  addProduct(product: Product): Product {
    this.products.unshift(product);
    return product;
  }

  updateProduct(id: string, updates: Partial<Product>): Product | null {
    const idx = this.products.findIndex((p) => p.id === id);
    if (idx === -1) return null;
    this.products[idx] = { ...this.products[idx], ...updates };
    return this.products[idx];
  }

  deleteProduct(id: string): boolean {
    const initialLen = this.products.length;
    this.products = this.products.filter((p) => p.id !== id);
    return this.products.length < initialLen;
  }

  getSuppliers(includeInactive: boolean = true): Supplier[] {
    if (includeInactive) return this.suppliers;
    return this.suppliers.filter((s) => s.isActive !== false);
  }

  getSupplierById(id: string): Supplier | undefined {
    return this.suppliers.find((s) => s.id === id);
  }

  addSupplier(supplier: Partial<Supplier>): Supplier {
    const newSupplier: Supplier = {
      id: supplier.id || `sup-${Date.now()}`,
      name: supplier.name || 'Nuevo Proveedor',
      phone: supplier.phone || '573167455877',
      contactPerson: supplier.contactPerson || '',
      address: supplier.address || '',
      notes: supplier.notes || '',
      isActive: supplier.isActive !== undefined ? supplier.isActive : true,
    };
    this.suppliers.push(newSupplier);
    return newSupplier;
  }

  updateSupplier(id: string, updates: Partial<Supplier>): Supplier | null {
    const idx = this.suppliers.findIndex((s) => s.id === id);
    if (idx === -1) return null;
    this.suppliers[idx] = { ...this.suppliers[idx], ...updates };
    return this.suppliers[idx];
  }

  deleteSupplier(id: string): boolean {
    // Soft delete (desactivación segura para preservar 100% el historial de pedidos y productos)
    const supplier = this.suppliers.find((s) => s.id === id);
    if (!supplier) return false;
    supplier.isActive = false;
    return true;
  }

  getCities(): City[] {
    return this.cities;
  }

  getCityById(id: string): City | undefined {
    return this.cities.find((c) => c.id === id);
  }

  addCity(city: City): City {
    this.cities.push(city);
    return city;
  }

  updateCity(id: string, updates: Partial<City>): City | null {
    const idx = this.cities.findIndex((c) => c.id === id);
    if (idx === -1) return null;
    this.cities[idx] = { ...this.cities[idx], ...updates };
    return this.cities[idx];
  }

  getPaymentMethods(): PaymentMethod[] {
    return this.paymentMethods;
  }

  updatePaymentMethod(id: string, updates: Partial<PaymentMethod>): PaymentMethod | null {
    const idx = this.paymentMethods.findIndex((p) => p.id === id);
    if (idx === -1) return null;
    this.paymentMethods[idx] = { ...this.paymentMethods[idx], ...updates };
    return this.paymentMethods[idx];
  }

  getOrders(): Order[] {
    return this.orders;
  }

  getOrderById(id: string): Order | undefined {
    return this.orders.find((o) => o.id === id);
  }

  addOrder(order: Order): Order {
    this.orders.unshift(order);
    return order;
  }

  createOrder(orderData: Partial<Order>): Order {
    const newOrder: Order = {
      id: orderData.id || `ord-${Date.now()}`,
      customerName: orderData.customerName || 'Cliente',
      customerPhone: orderData.customerPhone || '',
      address: orderData.address || '',
      cityId: orderData.cityId || 'city-cali',
      cityName: orderData.cityName || 'Cali',
      items: orderData.items || [],
      subtotal: orderData.subtotal || 0,
      shippingCost: orderData.shippingCost || 0,
      totalAmount: orderData.totalAmount || 0,
      depositAmount: orderData.depositAmount !== undefined ? orderData.depositAmount : 10000,
      balanceDue: orderData.balanceDue !== undefined ? orderData.balanceDue : ((orderData.totalAmount || 0) - (orderData.depositAmount !== undefined ? orderData.depositAmount : 10000)),
      paymentMethodId: orderData.paymentMethodId || 'pay-contraentrega',
      paymentMethodName: orderData.paymentMethodName || 'Contraentrega',
      status: orderData.status || 'pending',
      notes: orderData.notes,
      createdAt: orderData.createdAt || new Date().toISOString(),
    };
    this.orders.unshift(newOrder);
    return newOrder;
  }

  updateOrder(id: string, updates: Partial<Order>): Order | null {
    const idx = this.orders.findIndex((o) => o.id === id);
    if (idx === -1) return null;

    const current = this.orders[idx];
    const total = updates.totalAmount !== undefined ? updates.totalAmount : current.totalAmount;
    const deposit = updates.depositAmount !== undefined ? updates.depositAmount : current.depositAmount;
    const balanceDue = updates.balanceDue !== undefined ? updates.balanceDue : (total - deposit);

    this.orders[idx] = {
      ...current,
      ...updates,
      totalAmount: total,
      depositAmount: deposit,
      balanceDue,
    };
    return this.orders[idx];
  }

  deleteOrder(id: string): boolean {
    const initialLen = this.orders.length;
    this.orders = this.orders.filter((o) => o.id !== id);
    return this.orders.length < initialLen;
  }

  updateOrderStatus(orderId: string, status: Order['status']): Order | null {
    const order = this.orders.find((o) => o.id === orderId);
    if (!order) return null;
    order.status = status;
    return order;
  }

  getSupplierPosts(): SupplierPost[] {
    return this.supplierPosts;
  }

  addSupplierPost(post: SupplierPost): SupplierPost {
    this.supplierPosts.unshift(post);
    return post;
  }

  saveSupplierPosts(posts: SupplierPost[]): SupplierPost[] {
    posts.forEach((newP) => {
      const exists = this.supplierPosts.some(
        (p) => p.id === newP.id || (p.rawMessage && p.rawMessage === newP.rawMessage && (p as any).channelJid === (newP as any).channelJid)
      );
      if (!exists) {
        this.supplierPosts.unshift(newP);
      }
    });
    return this.supplierPosts;
  }

  updateSupplierPostStatus(id: string, status: SupplierPost['status']): boolean {
    const post = this.supplierPosts.find((p) => p.id === id);
    if (!post) return false;
    post.status = status;
    return true;
  }

  // Configuración de la Tienda
  private settings: StoreSettings = {
    storeName: 'DripZone',
    slogan: 'Luxury Streetwear & Collectibles',
    email: 'carlos.andres.lasso@gmail.com',
    phone: '3167455877',
    whatsappNumber: '573167455877',
    instagramHandle: '@dripzone.co',
    address: 'Bodega Central / Cali',
    city: 'Cali, Colombia',
    nequiAccount: '316 745 5877',
    daviplataAccount: '316 745 5877',
    accountHolder: 'Carlos Andrés Lasso',
    boldPaymentLink: 'https://bold.co/p/carlos-lasso',
    boldApiKey: '',
    boldMerchantId: '',
    boldQrUrl: '',
    boldEnabled: true,
    defaultProfitMargin: 35,
    defaultDepositAmount: 10000,
  };

  getSettings(): StoreSettings {
    return this.settings;
  }

  updateSettings(updates: Partial<StoreSettings>): StoreSettings {
    this.settings = { ...this.settings, ...updates };
    return this.settings;
  }

  // Control de Usuarios
  private users: User[] = [
    {
      id: 'usr-admin-1',
      name: 'Carlos Andrés Lasso',
      email: 'carlos.andres.lasso@gmail.com',
      phone: '3167455877',
      city: 'Cali',
      address: 'Centro / Bodega Principal',
      role: 'admin',
      isActive: true,
      createdAt: '2026-01-10',
      totalOrders: 0,
      lastLogin: 'Hoy, 08:15 PM',
    },
    {
      id: 'usr-operator-1',
      name: 'Andrés Operador Despachos',
      email: 'despachos@dripzone.co',
      phone: '3159876543',
      city: 'Cali',
      role: 'operator',
      isActive: true,
      createdAt: '2026-02-01',
      totalOrders: 0,
      lastLogin: 'Hoy, 05:30 PM',
    },
    {
      id: 'usr-cust-1',
      name: 'Mateo Gómez (Cliente VIP)',
      email: 'mateo.sneakers@gmail.com',
      phone: '3112345678',
      city: 'Cali',
      address: 'Calle 5 # 34-12 Apto 402',
      role: 'customer',
      isActive: true,
      createdAt: '2026-02-15',
      totalOrders: 3,
      lastLogin: 'Ayer, 08:20 PM',
    },
  ];

  getUsers(): User[] {
    return this.users;
  }

  addUser(user: User): User {
    this.users.unshift(user);
    return user;
  }

  updateUser(id: string, updates: Partial<User>): User | null {
    const idx = this.users.findIndex((u) => u.id === id);
    if (idx === -1) return null;
    this.users[idx] = { ...this.users[idx], ...updates };
    return this.users[idx];
  }

  deleteUser(id: string): boolean {
    const idx = this.users.findIndex((u) => u.id === id);
    if (idx === -1) return false;
    this.users.splice(idx, 1);
    return true;
  }

  authenticate(emailOrPhone: string): User | null {
    const q = emailOrPhone.trim().toLowerCase();
    const user = this.users.find(
      (u) => u.email.toLowerCase() === q || u.phone === q || u.phone.includes(q)
    );
    return user || null;
  }

  private monitoredGroups: MonitoredWhatsAppGroup[] = [...INITIAL_MONITORED_GROUPS];

  getMonitoredGroups(): MonitoredWhatsAppGroup[] {
    return this.monitoredGroups;
  }

  saveMonitoredGroups(groups: MonitoredWhatsAppGroup[]): MonitoredWhatsAppGroup[] {
    this.monitoredGroups = groups;
    return this.monitoredGroups;
  }

  toggleGroupMonitoring(idOrJid: string, isMonitored: boolean): MonitoredWhatsAppGroup | null {
    const grp = this.monitoredGroups.find((g) => g.id === idOrJid || g.jid === idOrJid);
    if (grp) {
      grp.isMonitored = isMonitored;
      return grp;
    }
    return null;
  }
}

export const dataService = new DataService();