export type Role = "admin" | "owner" | "employee";
export type AppointmentStatus = "scheduled" | "completed" | "cancelled" | "no_show";

export interface Business {
  id: number;
  name: string;
  industry: string;
  currency: string;
  currency_symbol: string;
  phone: string | null;
  address: string | null;
  slug?: string | null;
  plan?: string;
  status?: string;
  template?: string | null;
  trial_ends_at?: string | null;
  booking_enabled?: number | boolean;
  cancel_window_hours?: number;
  cancel_penalty_pct?: number;
  require_deposit?: number | boolean;
  deposit_pct?: number;
  timezone?: string;
  auto_assign_specialist?: number | boolean;
  working_hours?: WorkingHoursMap | string | null;
  created_at?: string;
}

export type WorkingDay = { start: string; end: string };
export type WorkingHoursMap = Record<number, WorkingDay | null>; // 1=Lun … 7=Dom

export interface User {
  id: number;
  business_id: number | null;
  email: string;
  name: string;
  role: Role;
  employee_id: number | null;
  avatar_color: string;
}

export interface Employee {
  id: number;
  business_id: number;
  name: string;
  email: string | null;
  phone: string | null;
  color: string;
  role: string;
  active: 0 | 1;
  rating: number;
  hire_date: string | null;
  service_ids?: number[];
  specialties?: string[];
  working_hours?: WorkingHoursMap | string | null;
  efficiency_score?: number;
  stats?: EmployeeStats;
}

export interface EmployeeStats {
  appointments_total: number;
  appointments_completed: number;
  revenue_total: number;
  avg_rating: number;
  share_pct: number;
}

export interface Service {
  id: number;
  business_id: number;
  name: string;
  description: string | null;
  category: string;
  duration_min: number;
  price: number;
  color: string;
  active: 0 | 1;
  employee_ids?: number[];
}

export interface Client {
  id: number;
  business_id: number;
  name: string;
  email: string | null;
  phone: string | null;
  /** El teléfono normalizado a E.164. `null` = no se pudo normalizar. */
  phone_e164?: string | null;
  /** Derivado: hay teléfono normalizado y por tanto se le puede avisar. */
  contactable?: boolean;
  notes: string | null;
  tags: string | null;
  /** whatsapp | facebook | instagram | mostrador | referido */
  source_channel?: string | null;
  created_at: string;
  stats?: ClientStats;
  /** Atribución traída del CRM. De solo lectura: allá es inmutable. */
  crm_contact_id?: string | null;
  crm_synced_at?: string | null;
  crm_source?: string | null;
  crm_tags?: string | null;
  attr_session_source?: string | null;
  attr_medium?: string | null;
  attr_campaign?: string | null;
  attr_campaign_id?: string | null;
  attr_utm_source?: string | null;
  attr_utm_medium?: string | null;
  attr_utm_content?: string | null;
  attr_ad_id?: string | null;
  attr_referrer?: string | null;
}

export interface ClientStats {
  visits: number;
  total_spent: number;
  last_visit: string | null;
  avg_ticket: number;
  no_show_count: number;
}

export interface Appointment {
  id: number;
  business_id: number;
  service_id: number;
  employee_id: number;
  client_id: number;
  start_at: string;
  end_at: string;
  status: AppointmentStatus;
  /**
   * El CRM aplana "no vino" y "el spa canceló" en un solo estado; para el
   * negocio son cosas distintas, así que el matiz vive aquí.
   * Solo tiene valor cuando `status === "cancelled"`.
   */
  cancelled_by?: "client" | "business" | null;
  cancel_reason?: string | null;
  price: number;
  notes: string | null;
  created_by_user_id: number | null;
  created_at: string;
  updated_at: string;
  // joined fields
  service?: Service;
  employee?: Pick<Employee, "id" | "name" | "color" | "role">;
  client?: Pick<Client, "id" | "name" | "phone" | "email" | "tags">;
}

export interface Ticket {
  id: number;
  business_id: number;
  appointment_id: number | null;
  client_id: number;
  employee_id: number;
  service_id: number;
  amount: number;
  tip: number;
  payment_method: string;
  created_at: string;
  service?: Pick<Service, "id" | "name" | "category" | "color">;
  employee?: Pick<Employee, "id" | "name" | "color">;
  client?: Pick<Client, "id" | "name">;
}

export interface DashboardOverview {
  revenue_today: number;
  revenue_range: number;
  revenue_prev: number;
  revenue_change_pct: number;
  appts_today: number;
  appts_week: number;
  appts_upcoming: number;
  active_clients: number;
  avg_ticket: number;
  cancel_rate: number;
  no_show_rate: number;
  completion_pct: number;
  range: number;
}

export interface RankedEmployee {
  employee: Pick<Employee, "id" | "name" | "color" | "role">;
  appointments: number;
  revenue: number;
  avg_rating: number;
  share_pct: number;
}

export interface RankedService {
  service: Pick<Service, "id" | "name" | "category" | "color">;
  count: number;
  revenue: number;
}

export interface RankedClient {
  client: Pick<Client, "id" | "name" | "tags" | "phone">;
  visits: number;
  total_spent: number;
  last_visit: string | null;
}

export interface TopTicket {
  ticket: Ticket;
}

export interface RevenuePoint {
  date: string;
  revenue: number;
  appts: number;
}

export interface CategorySlice {
  category: string;
  revenue: number;
  count: number;
}

export interface BookResponse {
  appointment: {
    id: number;
    start_at: string;
    end_at?: string;
    price: number;
    service_name: string;
    employee_id: number;
    employee_name: string;
    reasons: string[];
  };
  business: { name: string; currency_symbol: string };
  client_created: boolean;
  no_show_count?: number;
  risk_flag?: boolean;
}

export type PaymentMethod = "cash" | "card" | "transfer" | "other";

/**
 * El hecho consumado: la clienta vino. Solo existe si asistió — una cita es una
 * intención y una visita es un hecho con dinero; fusionarlas produce registros
 * que nadie cierra nunca.
 */
export interface Visit {
  id: number;
  business_id: number;
  appointment_id: number | null;
  client_id: number;
  employee_id: number;
  occurred_at: string;
  total_charged: number | null;
  payment_method: PaymentMethod | null;
  recorded_by_user_id: number | null;
  recorded_at: string;
}

export interface AttendanceResult {
  appointment: Appointment;
  visit: Visit | null;
}

/** Una cita del día pendiente de desenlace, con los nombres ya resueltos. */
export interface UnresolvedAppointment {
  id: number;
  client_id: number;
  employee_id: number;
  service_id: number;
  start_at: string;
  end_at: string;
  status: AppointmentStatus;
  price: number;
  client_name: string;
  employee_name: string;
  service_name: string;
}

export interface DayCloseSummary {
  date: string;
  closed_at: string | null;
  unresolved: UnresolvedAppointment[];
  attended: number;
  no_show: number;
  cancelled: number;
}

export interface DayClosure {
  id: number;
  business_id: number;
  business_date: string;
  closed_by_user_id: number;
  closed_at: string;
  attended_count: number;
  no_show_count: number;
  cancelled_count: number;
}

// ─── Integración con Bucéfalo CRM ───────────────────────────────────────────

/** La atribución llega del CRM y es de solo lectura: allá es inmutable. */
export interface ClientAttribution {
  crm_source?: string | null;
  attr_session_source?: string | null;
  attr_medium?: string | null;
  attr_campaign?: string | null;
  attr_campaign_id?: string | null;
  attr_utm_source?: string | null;
  attr_utm_medium?: string | null;
  attr_utm_content?: string | null;
  attr_ad_id?: string | null;
  attr_referrer?: string | null;
  crm_tags?: string | null;
  crm_contact_id?: string | null;
  crm_synced_at?: string | null;
}

export interface CrmOutboxState {
  pendiente: number;
  enviando: number;
  confirmado: number;
  fallido: number;
  indeterminado: number;
}

export interface CrmSyncRun {
  id: number;
  kind: string;
  status: "corriendo" | "ok" | "error";
  fetched: number;
  created: number;
  updated: number;
  started_at: string;
  finished_at: string | null;
  error: string | null;
}

export interface CrmStatus {
  connected: boolean;
  location_id?: string;
  pipeline_id?: string | null;
  /** Si es false, cada clienta tiene UNA oportunidad que se recicla por cita. */
  allow_duplicate_opp?: boolean;
  last_sync_at?: string | null;
  last_sync_status?: string | null;
  stats?: {
    clientes: number;
    sincronizados: number;
    contactables: number;
    con_campana: number;
  };
  last_run?: CrmSyncRun | null;
  outbox?: CrmOutboxState;
}

export interface CrmSyncResult {
  runId: number;
  fetched: number;
  created: number;
  updated: number;
  skipped: number;
  total_crm: number;
  status: "ok" | "error";
}

export interface ConversationSummary {
  crm_conversation_id: string;
  crm_contact_id: string | null;
  contact_name: string;
  last_message_body: string | null;
  last_message_type: string | null;
  last_message_at: string | number | null;
  unread_count: number;
  client: { id: number; name: string; contactable: boolean } | null;
}

export interface ConversationMessage {
  id: string;
  body: string | null;
  direction: string | null;
  channel: string | null;
  status: string | null;
  sent_at: string | null;
}

export interface SendMessageResult {
  /** El CRM acusa ENCOLADO, no entrega. La interfaz no debe decir «entregado». */
  queued: boolean;
  sent_to: string;
  redirigido: boolean;
  aviso: string | null;
}

/** Una cuenta de la plataforma, vista desde la consola de administración. */
export interface PlatformAccount {
  id: number;
  name: string;
  slug: string | null;
  timezone: string;
  status: string;
  created_at: string;
  clientes: number;
  usuarios: number;
  /** Vínculo con Bucéfalo CRM. `null` si la cuenta no está vinculada. */
  location_id: string | null;
  crm_label: string | null;
  /** Los 6 últimos caracteres del token. El token nunca sale del servidor. */
  token_fingerprint: string | null;
  token_updated_at: string | null;
  pipeline_id: string | null;
  calendar_id: string | null;
  allow_real_sends: boolean | null;
  test_email: string | null;
  last_sync_at: string | null;
  last_sync_status: string | null;
}

/** Las cinco entidades que se pueden sincronizar por su identificador. */
export type CrmEntidad = "contacto" | "conversacion" | "mensaje" | "cita" | "servicio";

export interface CrmSyncUnoResult {
  entidad: CrmEntidad;
  id: string;
  accion: string;
  detalle: Record<string, unknown>;
}