import { z } from "zod";
import { req, text } from "./common.js";

export const ROLES = ["ADMIN", "EDITOR"] as const;
export type Role = (typeof ROLES)[number];

export const ROLE_LABELS: Record<Role, string> = {
  ADMIN: "مدیر کل",
  EDITOR: "ویرایشگر",
};

const password = z.string().min(8, "رمز عبور باید حداقل ۸ کاراکتر باشد").max(128);

const FA_DIGITS = "۰۱۲۳۴۵۶۷۸۹";
const AR_DIGITS = "٠١٢٣٤٥٦٧٨٩";

/** Normalize Iranian mobile to `09XXXXXXXXX` (Latin digits). */
export function normalizeIrMobile(raw: string): string {
  let s = raw.trim().replace(/[\s\-()]/g, "");
  s = s.replace(/[۰-۹٠-٩]/g, (d) => {
    const fa = FA_DIGITS.indexOf(d);
    if (fa >= 0) return String(fa);
    const ar = AR_DIGITS.indexOf(d);
    return ar >= 0 ? String(ar) : d;
  });
  if (s.startsWith("+98")) s = `0${s.slice(3)}`;
  else if (s.startsWith("0098")) s = `0${s.slice(4)}`;
  else if (s.startsWith("98") && s.length === 12) s = `0${s.slice(2)}`;
  return s;
}

export const irMobileSchema = z
  .string()
  .trim()
  .min(1, "شماره موبایل را وارد کنید")
  .transform(normalizeIrMobile)
  .pipe(z.string().regex(/^09\d{9}$/, "شماره موبایل معتبر نیست (مثلاً ۰۹۱۲۱۲۳۴۵۶۷)"));

export const loginSchema = z.object({
  phone: irMobileSchema,
  password: z.string().min(1, "رمز عبور را وارد کنید").max(128),
});
export type LoginInput = z.infer<typeof loginSchema>;

export const changePasswordSchema = z.object({
  currentPassword: z.string().min(1, "رمز فعلی را وارد کنید").max(128),
  newPassword: password,
});
export type ChangePasswordInput = z.infer<typeof changePasswordSchema>;

export const userCreateSchema = z.object({
  phone: irMobileSchema,
  name: req(80),
  role: z.enum(ROLES),
  password,
});
export type UserCreateInput = z.infer<typeof userCreateSchema>;

export const userUpdateSchema = z.object({
  name: req(80),
  role: z.enum(ROLES),
  isActive: z.boolean(),
  /** set only when resetting the password */
  password: password.optional(),
});
export type UserUpdateInput = z.infer<typeof userUpdateSchema>;

export interface AdminUserDto {
  id: number;
  phone: string;
  name: string;
  role: Role;
  isActive: boolean;
  lastLoginAt: string | null;
  createdAt: string;
}

export interface AuthResponse {
  accessToken: string;
  user: AdminUserDto;
}

/* ---------------- contact messages ---------------- */

export const MESSAGE_STATUSES = ["NEW", "READ", "ARCHIVED"] as const;
export type MessageStatus = (typeof MESSAGE_STATUSES)[number];

export const MESSAGE_STATUS_LABELS: Record<MessageStatus, string> = {
  NEW: "جدید",
  READ: "خوانده‌شده",
  ARCHIVED: "بایگانی",
};

export const contactInputSchema = z.object({
  name: req(80),
  org: req(120),
  phone: z
    .string()
    .trim()
    .min(1, "این فیلد الزامی است")
    .max(30)
    .regex(/^[0-9۰-۹+\-\s()]{5,30}$/, "شماره تماس معتبر نیست"),
  message: text(2000),
  /** honeypot — real visitors never fill it */
  website: z.string().max(200).optional(),
});
export type ContactInput = z.infer<typeof contactInputSchema>;

export const messageUpdateSchema = z.object({
  status: z.enum(MESSAGE_STATUSES),
});

export interface ContactMessageDto {
  id: number;
  name: string;
  org: string;
  phone: string;
  message: string;
  status: MessageStatus;
  createdAt: string;
}

/* ---------------- media ---------------- */

export interface MediaDto {
  id: number;
  url: string;
  alt: string;
  mime: string;
  size: number;
  width: number | null;
  height: number | null;
  originalName: string;
  createdAt: string;
}

export const mediaUpdateSchema = z.object({ alt: text(200) });

export interface Paginated<T> {
  items: T[];
  total: number;
  page: number;
  pageSize: number;
}

export interface DashboardCategoryStat {
  id: number;
  name: string;
  count: number;
}

export interface DashboardTrendDay {
  date: string;
  dayName: string;
  messages: number;
}

export interface DashboardDto {
  categories: number;
  products: number;
  draftProducts: number;
  newMessages: number;
  media: number;
  recentMessages: ContactMessageDto[];
  recentActivity: { id: number; action: string; entity: string; summary: string; user: string | null; createdAt: string }[];
  categoryStats: DashboardCategoryStat[];
  messageBreakdown: { new: number; read: number; archived: number; total: number };
  sectionsSummary: { total: number; visible: number; hidden: number };
  trend: DashboardTrendDay[];
}