import { defineStore } from 'pinia';
import { computed, ref } from 'vue';
import type { PlatformAdminDto, PlatformLoginResponse } from '@mento/shared';
import { platformApi } from '@/lib/platform-api';

const TOKEN_KEY = 'mento_platform_token';
const ADMIN_KEY = 'mento_platform_admin';

function readStoredAdmin(): PlatformAdminDto | null {
  const raw = localStorage.getItem(ADMIN_KEY);
  if (!raw) return null;
  try {
    return JSON.parse(raw) as PlatformAdminDto;
  } catch {
    return null;
  }
}

export const usePlatformAuthStore = defineStore('platform-auth', () => {
  const token = ref<string | null>(localStorage.getItem(TOKEN_KEY));
  const admin = ref<PlatformAdminDto | null>(readStoredAdmin());
  const isAuthenticated = computed(() => Boolean(token.value));

  function persist(payload: PlatformLoginResponse) {
    token.value = payload.accessToken;
    admin.value = payload.admin;
    localStorage.setItem(TOKEN_KEY, payload.accessToken);
    localStorage.setItem(ADMIN_KEY, JSON.stringify(payload.admin));
  }

  async function login(mobile: string, password: string) {
    const { data } = await platformApi.post<PlatformLoginResponse>(
      '/platform/auth/login',
      { mobile, password },
    );
    persist(data);
  }

  function logout() {
    token.value = null;
    admin.value = null;
    localStorage.removeItem(TOKEN_KEY);
    localStorage.removeItem(ADMIN_KEY);
  }

  async function hydrate() {
    if (!token.value) return;
    try {
      const { data } = await platformApi.get<PlatformAdminDto>('/platform/auth/me');
      admin.value = data;
      localStorage.setItem(ADMIN_KEY, JSON.stringify(data));
    } catch {
      logout();
    }
  }

  if (token.value) void hydrate();

  return {
    token,
    admin,
    isAuthenticated,
    login,
    logout,
    hydrate,
  };
});