import type { User } from "@/lib/types"

import { httpJson } from "./http"

export type RegisterInput = {
  username: string
  email: string
  password: string
  vcode?: string
  requestId?: string
}

export type LoginInput = {
  username: string
  password: string
}

function throwApiError(code: number, msg: string): never {
  throw { code, msg }
}

export async function register(input: RegisterInput): Promise<User> {
  const username = input.username.trim()
  const email = input.email.trim()
  const password = input.password
  const vcode = input.vcode?.trim()

  if (!username) throwApiError(400, "请输入用户名")
  if (!email) throwApiError(400, "请输入邮箱")
  if (!password || password.length < 6) throwApiError(400, "密码至少6位")

  const headers: Record<string, string> = {}
  if (input.requestId) headers["X-Request-Id"] = input.requestId

  const res = await httpJson<{ user: User }>("/api/v1/auth/register", {
    method: "POST",
    json: { username, email, password, vcode },
    headers,
  })
  return res.user
}

export async function login(input: LoginInput): Promise<User> {
  const username = input.username.trim()
  const password = input.password

  if (!username) throwApiError(400, "请输入用户名")
  if (!password || password.length < 6) throwApiError(400, "密码至少6位")

  const res = await httpJson<{ user: User }>("/api/v1/auth/login", {
    method: "POST",
    json: { username, password },
  })
  return res.user
}

export async function logout(): Promise<void> {
  await httpJson<unknown>("/api/v1/auth/logout", {
    method: "POST",
  })
}

export async function resetPassword(input: {
  email: string
  vcode: string
  newPassword: string
  requestId?: string
}): Promise<void> {
  const email = input.email.trim()
  const vcode = input.vcode.trim()
  const newPassword = input.newPassword

  if (!email) throwApiError(400, "请输入邮箱")
  if (!vcode) throwApiError(400, "请输入验证码")
  if (!newPassword || newPassword.length < 8) throwApiError(400, "密码至少8位")

  const headers: Record<string, string> = {}
  if (input.requestId) headers["X-Request-Id"] = input.requestId

  await httpJson<unknown>("/api/v1/auth/reset-password", {
    method: "POST",
    json: { email, vcode, newPassword },
    headers,
  })
}