/**
 * 集成测试 HTTP 客户端
 * 使用 axios 替代 Playwright 的 APIRequestContext，确保可在 Vitest 中运行
 *
 * FIX-01: Node.js 22 下 localhost 解析为 IPv6 ::1，但后端只绑 IPv4 0.0.0.0
 * 强制使用 127.0.0.1 (避免被环境变量 BASE_URL=/ 干扰)
 */
import axios, { AxiosInstance, AxiosResponse } from 'axios';

// 强制 127.0.0.1，不依赖环境变量（避免被 BASE_URL=/ 等干扰）
const BASE_URL = 'http://127.0.0.1:3000';

let httpClient: AxiosInstance | null = null;
let authToken: string | null = null;

/** 初始化 HTTP 客户端 */
export function initHttpClient(): void {
  httpClient = axios.create({
    baseURL: BASE_URL,
    timeout: 30000,
    headers: { 'Content-Type': 'application/json' },
  });
  // 防御：如果多次 init，需要重新创建
  if (!httpClient) {
    httpClient = axios.create({
      baseURL: BASE_URL,
      timeout: 30000,
      headers: { 'Content-Type': 'application/json' },
    });
  }
}

/** 释放 HTTP 客户端 */
export function disposeHttpClient(): void {
  httpClient = null;
}

/** 设置认证 token */
export function setAuthToken(token: string): void {
  authToken = token;
}

/** 获取当前 token */
export function getAuthToken(): string | null {
  return authToken;
}

/** 清除认证 token */
export function clearAuthToken(): void {
  authToken = null;
}

/** API 响应类型 */
export interface ApiResponse {
  code: number;
  message: string;
  data: any;
}

/** 解析 API 响应 */
function parseResponse(response: AxiosResponse): ApiResponse {
  const body = response.data;
  if (body && typeof body === 'object' && body.code !== undefined) {
    return { code: body.code, message: body.message ?? '', data: body.data };
  }
  if (body && typeof body === 'object' && body.success === true) {
    return { code: 0, message: '', data: body.data };
  }
  return { code: response.status, message: '', data: body };
}

/** 确保 httpClient 已初始化 */
function ensureClient(): AxiosInstance {
  if (!httpClient) {
    initHttpClient();
  }
  if (!httpClient) {
    throw new Error('httpClient 初始化失败');
  }
  return httpClient;
}

/** GET 请求 */
export async function apiGet(path: string, params?: Record<string, string>): Promise<ApiResponse> {
  const client = ensureClient();
  const config: any = {};
  if (authToken) {
    config.headers = { Authorization: `Bearer ${authToken}` };
  }
  if (params) {
    config.params = params;
  }
  try {
    const response = await client.get(path, config);
    return parseResponse(response);
  } catch (error: any) {
    if (error.response) {
      return parseResponse(error.response);
    }
    return { code: -1, message: error.message || String(error), data: null };
  }
}

/** POST 请求 */
export async function apiPost(path: string, data?: any): Promise<ApiResponse> {
  const client = ensureClient();
  const config: any = {};
  if (authToken) {
    config.headers = { Authorization: `Bearer ${authToken}` };
  }
  try {
    const response = await client.post(path, data, config);
    return parseResponse(response);
  } catch (error: any) {
    if (error.response) {
      return parseResponse(error.response);
    }
    return { code: -1, message: error.message || String(error), data: null };
  }
}

/** PUT 请求 */
export async function apiPut(path: string, data?: any): Promise<ApiResponse> {
  const client = ensureClient();
  const config: any = {};
  if (authToken) {
    config.headers = { Authorization: `Bearer ${authToken}` };
  }
  try {
    const response = await client.put(path, data, config);
    return parseResponse(response);
  } catch (error: any) {
    if (error.response) {
      return parseResponse(error.response);
    }
    return { code: -1, message: error.message || String(error), data: null };
  }
}

/** DELETE 请求 */
export async function apiDelete(path: string): Promise<ApiResponse> {
  const client = ensureClient();
  const config: any = {};
  if (authToken) {
    config.headers = { Authorization: `Bearer ${authToken}` };
  }
  try {
    const response = await client.delete(path, config);
    return parseResponse(response);
  } catch (error: any) {
    if (error.response) {
      return parseResponse(error.response);
    }
    return { code: -1, message: error.message || String(error), data: null };
  }
}

/** 创建测试用户（集成测试专用） */
export async function createTestUser(): Promise<{ token: string; userId: string }> {
  initHttpClient();
  const phone = `13${Math.floor(Math.random() * 1_000_000_000).toString().padStart(9, '0')}`;

  await apiPost('/api/auth/send-code', { phone });
  const loginRes = await apiPost('/api/auth/login', { phone, code: '123456' });

  if (loginRes.code !== 0 || !loginRes.data?.token) {
    throw new Error('创建测试用户失败');
  }

  setAuthToken(loginRes.data.token);
  return { token: loginRes.data.token, userId: loginRes.data.userId || '1' };
}