// Shared TypeScript types between client and server.
// Type-only — safe to import from both sides without bundling runtime code.

export type UserRole = "user" | "admin";

export type SubscriptionPlan = "trial" | "basic" | "pro";
export type SubscriptionStatus =
  | "trialing"
  | "active"
  | "past_due"
  | "canceled"
  | "expired";

export type QueueEntryStatus =
  | "waiting"
  | "called"
  | "in_consultation"
  | "done"
  | "absent"
  | "canceled";

export type AnalyticsEventType =
  | "patient_joined"
  | "patient_called"
  | "patient_done"
  | "patient_absent"
  | "queue_opened"
  | "queue_closed";

export interface PublicUser {
  id: number;
  email: string;
  name: string | null;
  role: UserRole;
}

export interface ClinicSummary {
  id: number;
  name: string;
  color: string | null;
  isQueueOpen: boolean;
  avgConsultationMinutes: number | null;
}

export interface PublicQueueEntry {
  id: number;
  ticketNumber: number;
  status: QueueEntryStatus;
  position: number;
  estimatedWaitMinutes: number | null;
  patientName: string | null;
}

// ─── Socket.io event payloads ────────────────────────────────────────────────
export interface QueueUpdatePayload {
  clinic: ClinicSummary | unknown;
  queue: PublicQueueEntry[];
  callingNow: { ticketNumber: number; patientName: string | null } | null;
  waitingCount: number;
}

export interface PatientUpdatePayload {
  entry: {
    id: number;
    ticketNumber: number;
    status: QueueEntryStatus;
    position: number;
    estimatedWaitMinutes: number | null;
  };
  position: number;
  estimatedWaitMinutes: number | null;
  callingNow: { ticketNumber: number; patientName: string | null } | null;
  waitingCount: number;
}

export interface PatientCalledPayload {
  ticketNumber: number;
  clinicId: number;
}

export interface QrRotatedPayload {
  qrToken: string;
  qrTokenExpiresAt: string | Date | null;
}

export const SOCKET_EVENTS = {
  // Doctor / display rooms
  QUEUE_UPDATE: "queue:update",
  QR_ROTATED: "qr:rotated",
  // Patient room
  PATIENT_UPDATE: "patient:update",
  PATIENT_CALLED: "patient:called",
  PATIENT_APPROACHING: "patient:approaching",
  PATIENT_ABSENT: "patient:absent",
  PATIENT_DONE: "patient:done",
  // Subscription topics
  CLINIC_SUBSCRIBE: "clinic:subscribe",
  CLINIC_UNSUBSCRIBE: "clinic:unsubscribe",
  DISPLAY_SUBSCRIBE: "display:subscribe",
  DISPLAY_UNSUBSCRIBE: "display:unsubscribe",
  PATIENT_SUBSCRIBE: "patient:subscribe",
  PATIENT_UNSUBSCRIBE: "patient:unsubscribe",
} as const;

export type SocketEventName = (typeof SOCKET_EVENTS)[keyof typeof SOCKET_EVENTS];