/**
 * 教练端 HTTP API 测试工具
 * 支持 HMAC-SHA256 签名 + JWT Bearer Token
 */

const http = require('http');
const crypto = require('crypto');

const BASE_URL = 'http://192.168.110.64:8084';
const API_BASE = BASE_URL + '/api';
const SIGNATURE_SECRET = 'NovalonManageSystemSecretKey2026';

/**
 * 生成 HMAC-SHA256 签名头
 */
function generateSignatureHeaders(method, path, bodyStr) {
  const timestamp = Date.now();
  const nonce = timestamp.toString(36) + '-' + Math.random().toString(36).substring(2, 8);
  const stringToSign = [method.toUpperCase(), path, '', bodyStr || '', String(timestamp), nonce].join('\n');
  const signature = crypto.createHmac('sha256', SIGNATURE_SECRET).update(stringToSign).digest('base64');
  return {
    'X-Signature': signature,
    'X-Timestamp': String(timestamp),
    'X-Nonce': nonce
  };
}

/**
 * 通用 HTTP 请求
 */
function makeRequest(method, url, body, token) {
  return new Promise((resolve, reject) => {
    const parsed = new URL(url);
    const bodyStr = body ? JSON.stringify(body) : '';
    const headers = {
      'Content-Type': 'application/json',
      ...generateSignatureHeaders(method, parsed.pathname + parsed.search, bodyStr)
    };
    if (token) {
      headers['Authorization'] = 'Bearer ' + token;
    }

    const options = {
      hostname: parsed.hostname,
      port: parsed.port,
      path: parsed.pathname + parsed.search,
      method: method,
      headers: headers,
      timeout: 15000
    };

    const req = http.request(options, (res) => {
      let data = '';
      res.on('data', chunk => data += chunk);
      res.on('end', () => {
        let parsedData;
        try { parsedData = JSON.parse(data); } catch (e) { parsedData = data; }
        resolve({ status: res.statusCode, data: parsedData });
      });
    });
    req.on('error', (e) => reject(e));
    if (bodyStr) req.write(bodyStr);
    req.end();
  });
}

function isSuccess(res) {
  return res.status >= 200 && res.status < 300;
}

// ── 教练端 API ──

/** 教练登录 */
async function coachLogin(username, password) {
  console.log(`[API] 教练登录: ${username}`);
  const res = await makeRequest('POST', `${API_BASE}/auth/login`, { username, password });
  console.log(`[API] 登录响应: status=${res.status}`);
  if (isSuccess(res) && res.data) {
    return {
      token: res.data.token,
      userId: res.data.userId,
      username: res.data.username
    };
  }
  return null;
}

/** 获取教练的团课列表 */
async function getCoachCourses(coachId, token) {
  console.log(`[API] 获取教练课程: coachId=${coachId}`);
  const res = await makeRequest('GET', `${API_BASE}/coach/${coachId}/courses`, null, token);
  console.log(`[API] 课程列表: status=${res.status}`);
  return res;
}

/** 获取团课详情 */
async function getCourseDetail(courseId, token) {
  console.log(`[API] 获取课程详情: courseId=${courseId}`);
  const res = await makeRequest('GET', `${API_BASE}/groupCourse/${courseId}/detail`, null, token);
  console.log(`[API] 课程详情: status=${res.status}`);
  return res;
}

/** 手动开课 */
async function startCourse(courseId, token) {
  console.log(`[API] 手动开课: courseId=${courseId}`);
  const res = await makeRequest('POST', `${API_BASE}/coach/courses/${courseId}/start`, {}, token);
  console.log(`[API] 开课结果: status=${res.status}`);
  return res;
}

/** 手动结课 */
async function endCourse(courseId, token) {
  console.log(`[API] 手动结课: courseId=${courseId}`);
  const res = await makeRequest('POST', `${API_BASE}/coach/courses/${courseId}/end`, {}, token);
  console.log(`[API] 结课结果: status=${res.status}`);
  return res;
}

/** 获取课程预约列表 */
async function getCourseBookings(courseId, token) {
  console.log(`[API] 获取预约列表: courseId=${courseId}`);
  const res = await makeRequest('GET', `${API_BASE}/groupCourse/bookings/course/${courseId}`, null, token);
  console.log(`[API] 预约列表: status=${res.status}`);
  return res;
}

// ── 品牌定制 API ──

/** 获取品牌配置 */
async function getBrandConfig(token) {
  console.log('[API] 获取品牌配置...');
  const res = await makeRequest('GET', `${API_BASE}/brand`, null, token);
  console.log(`[API] 品牌配置: status=${res.status}`);
  return res;
}

// ── 违规记录 API ──

/** 获取所有教练违规统计 */
async function getViolationCounts(token) {
  console.log('[API] 获取违规统计...');
  const res = await makeRequest('GET', `${API_BASE}/coach/violation-counts`, null, token);
  console.log(`[API] 违规统计: status=${res.status}`);
  return res;
}

/** 获取指定教练的违规记录 */
async function getCoachViolations(coachId, token) {
  console.log(`[API] 获取教练违规: coachId=${coachId}`);
  const res = await makeRequest('GET', `${API_BASE}/coach/${coachId}/violations`, null, token);
  console.log(`[API] 违规记录: status=${res.status}`);
  return res;
}

// ── 通知/消息 API ──

/** 获取活跃Banner列表 */
async function getActiveBanners(token) {
  console.log('[API] 获取活跃Banners...');
  const res = await makeRequest('GET', `${API_BASE}/banners/active`, null, token);
  console.log(`[API] Banners: status=${res.status}`);
  return res;
}

/** 获取系统通知列表 */
async function getSystemNotices(token) {
  console.log('[API] 获取系统通知...');
  const res = await makeRequest('GET', `${API_BASE}/notices`, null, token);
  console.log(`[API] 通知列表: status=${res.status}`);
  return res;
}

module.exports = {
  makeRequest,
  coachLogin,
  getCoachCourses,
  getCourseDetail,
  startCourse,
  endCourse,
  getCourseBookings,
  getBrandConfig,
  getViolationCounts,
  getCoachViolations,
  getActiveBanners,
  getSystemNotices,
  isSuccess,
  BASE_URL,
  API_BASE
};