import { api, setToken } from "@/api/client";
import type { LoginResponse } from "@/types";

export async function login(username: string, password: string): Promise<LoginResponse> {
  const res = await api.post<LoginResponse>("/auth/login", { username, password });
  setToken(res.token);
  return res;
}

// ---- 四种登录：短信验证码 / 微信扫码 / 小程序扫码 ----

export async function sendCode(phone: string): Promise<{ sent: boolean; message: string; stub_code?: string }> {
  return api.post("/auth/send-code", { phone });
}

export async function phoneLogin(phone: string, code: string): Promise<LoginResponse> {
  const res = await api.post<LoginResponse>("/auth/phone-login", { phone, code });
  setToken(res.token);
  return res;
}

/** 绑定手机号（验证码；若手机号已被占用则后端按手机号合并，返回新令牌需切换） */
export async function bindPhone(phone: string, code: string): Promise<LoginResponse> {
  const res = await api.post<LoginResponse>("/auth/bind-phone", { phone, code });
  setToken(res.token); // 可能合并成另一个账号，必须切换到新令牌
  return res;
}

/** 解绑登录方式：phone | wx | wx_mini（至少保留一种） */
export async function unbind(type: "phone" | "wx" | "wx_mini") {
  return api.post("/auth/unbind", { type });
}

export async function wxQrStart(): Promise<{ scene: string; qr_url: string; redirect_uri: string; stub: boolean }> {
  return api.get("/auth/wx-qr/start");
}

export async function wxQrPoll(scene: string): Promise<{ status: string; token?: string; profile?: LoginResponse }> {
  return api.get(`/auth/wx-qr/poll?scene=${encodeURIComponent(scene)}`);
}

export async function mpQrStart(): Promise<{ scene: string; qr_url: string; mp_enabled: boolean }> {
  return api.get("/auth/mp-qr/start");
}

export async function mpQrPoll(scene: string): Promise<{ status: string; token?: string; profile?: LoginResponse; message?: string }> {
  return api.get(`/auth/mp-qr/poll?scene=${encodeURIComponent(scene)}`);
}

/** 发起「绑定小程序」：返回小程序码(微信扫码自动打开小程序确认)，绑定到当前账号 */
export async function bindMpStart(): Promise<{ scene: string; qr_image?: string; qr_url?: string; mp_enabled: boolean }> {
  return api.get("/auth/mp-qr/bind-start");
}

export async function fetchMe(): Promise<Record<string, unknown>> {
  return api.get("/auth/me");
}

export function getSavedUser(): { username?: string; role?: string } | null {
  try {
    return JSON.parse(localStorage.getItem("@cloud-opc-admin/user") || "null");
  } catch {
    return null;
  }
}

export function saveUser(user: { username?: string; role?: string } | null) {
  if (user) localStorage.setItem("@cloud-opc-admin/user", JSON.stringify(user));
  else localStorage.removeItem("@cloud-opc-admin/user");
}