import { request, CLIENT_ID } from '@/utils/request'
import type { LoginResult as AuthLoginResult, RegisterResult } from '@/types/business/auth'
import type {
  LoginBySmsParams,
  LoginResult,
  ResetPasswordParams,
  User,
} from '@/types/business/user'
import { isPhone, isValidPassword } from '@/utils/validate'

export const PC_CLIENT_ID = CLIENT_ID

export function loginByAccountApi(data: { username: string; password: string }): Promise<AuthLoginResult> {
  return request<AuthLoginResult>({
    url: '/auth/login',
    method: 'post',
    data: {
      username: data.username,
      password: data.password,
      clientId: PC_CLIENT_ID,
      grantType: 'password',
    },
  })
}

export function registerByAccountApi(data: { username: string; password: string }): Promise<RegisterResult> {
  return request<RegisterResult>({
    url: '/auth/register',
    method: 'post',
    data: {
      username: data.username,
      password: data.password,
      userType: 'sys_user',
      clientId: PC_CLIENT_ID,
      grantType: 'password',
    },
  })
}

// TODO(api): 以下为原 mock 逻辑（保留，待后端对应接口就绪后替换）

const SIX_DIGIT_CODE = /^\d{6}$/

export function sendSmsCode(phone: string): Promise<void> {
  if (!isPhone(phone)) return Promise.reject(new Error('手机号格式不正确'))
  return Promise.resolve()
}

export function loginBySms(params: LoginBySmsParams): Promise<LoginResult> {
  const { phone, code } = params
  if (!isPhone(phone)) return Promise.reject(new Error('手机号格式不正确'))
  if (!SIX_DIGIT_CODE.test(code)) return Promise.reject(new Error('验证码格式不正确，应为6位数字'))
  const user: User = {
    id: 'u1',
    nickname: '王永志',
    avatar: '',
    phone: '186****618',
    email: 'yongzh******4@163.com',
    passwordModifiedAt: '',
  }
  return Promise.resolve({ token: `mock-token-${Date.now()}`, user })
}

function validateAuthForm(
  phone: string,
  code: string,
  password: string,
  confirmPassword: string,
  agree: boolean,
): string | null {
  if (!isPhone(phone)) return '手机号格式不正确'
  if (!SIX_DIGIT_CODE.test(code)) return '验证码格式不正确，应为6位数字'
  if (!isValidPassword(password)) return '密码长度应为6-20位'
  if (password !== confirmPassword) return '两次输入的密码不一致'
  if (!agree) return '请先阅读并同意《用户协议》和《隐私政策》'
  return null
}

export function resetPassword(params: ResetPasswordParams): Promise<void> {
  const message = validateAuthForm(
    params.phone,
    params.code,
    params.password,
    params.confirmPassword,
    params.agree,
  )
  if (message) return Promise.reject(new Error(message))
  return Promise.resolve()
}