import { loading, hideLoading } from "./widget";
const env = __VITE_ENV__;
const baseUrl = env.MP_API_BASE_URL;

const defaultOptions = {
  header: {
    "Content-Type": "application/json",
  },
  method: "POST",
  timeout: 1000 * 60, // 请求超时设置为60秒
};
const tasks = [];

// 是否正在刷新 token
let isRefreshing = false;
// 重试队列
let retryQueue = [];

/**
 * 处理重试队列
 * @param {String} token - 新的 token
 */
function processQueue(token) {
	retryQueue.forEach(({ resolve, reject, config }) => {
		if (token) {
			// 更新 token 并重试请求
			if (!config.header) config.header = {};
			config.header.Authorization = `Bearer ${token}`;
			uni.request({
				...config,
				success: (res) => resolve(res),
				fail: (err) => reject(err),
			});
		} else {
			reject(new Error("Token 刷新失败"));
		}
	});
	retryQueue = [];
}

/**
 * 刷新 token
 * @returns {Promise<String|null>}
 */
async function refreshAccessToken() {
	const refreshToken = uni.getStorageSync("refreshToken");
	if (!refreshToken) {
		return null;
	}

	if (isRefreshing) {
		// 等待刷新完成
		await new Promise((resolve) => setTimeout(resolve, 100));
		return uni.getStorageSync("accessToken");
	}

	isRefreshing = true;

	try {
		const res = await uni.request({
			url: `${baseUrl}/auth/refresh`,
			method: "POST",
			header: {
				"Content-Type": "application/json",
			},
			data: {
				refreshToken,
			},
		});

		if (res && res.data && res.data.success && res.data.data) {
			const newToken = res.data.data.accessToken;
			uni.setStorageSync("accessToken", newToken);
			processQueue(newToken);
			return newToken;
		} else {
			// 刷新失败，清空队列
			processQueue(null);
			// 清除登录状态
			uni.removeStorageSync("accessToken");
			uni.removeStorageSync("refreshToken");
			uni.removeStorageSync("jwtUserInfo");
			return null;
		}
	} catch (error) {
		console.error("Token 刷新异常:", error);
		processQueue(null);
		uni.removeStorageSync("accessToken");
		uni.removeStorageSync("refreshToken");
		uni.removeStorageSync("jwtUserInfo");
		return null;
	} finally {
		isRefreshing = false;
	}
}

const request = async (options = {}, showLoading = true) => {
  // 合并用户传入的配置和默认配置
  if (!options.data) options.data = {};
  
  const config = {
    ...defaultOptions,
    ...options,
    url: baseUrl + options.url,
  };
  
  // 添加 token 到请求头
  // const accessToken = uni.getStorageSync("accessToken");
  // if (accessToken) {
  //   if (!config.header) config.header = {};
  //   config.header.Authorization = `Bearer ${accessToken}`;
  // }
  
  const key = `${JSON.stringify(config)}_${Date.now()}`;
  if (showLoading) {
    recordTask(key)
  }
  
  try {
    // 发起请求
    const res = await uni.request(config);
    if (showLoading) {
      removeTask(key)
    }
    
    // 如果返回 401，尝试刷新 token
    // if (res.statusCode === 401) {
    //   if (showLoading) {
    //     removeTask(key)
    //   }
      
    //   // 尝试刷新 token
    //   const newToken = await refreshAccessToken();
      
    //   if (newToken) {
    //     // 刷新成功，重试原请求
    //     if (!config.header) config.header = {};
    //     config.header.Authorization = `Bearer ${newToken}`;
        
    //     if (showLoading) {
    //       recordTask(key)
    //     }
        
    //     const retryRes = await uni.request(config);
        
    //     if (showLoading) {
    //       removeTask(key)
    //     }
        
    //     const success = retryRes && retryRes.data && retryRes.data.success === true;
    //     if (success) {
    //       return retryRes.data;
    //     }
    //     return {
    //       success: false,
    //       message: retryRes.data && retryRes.data.message ? retryRes.data.message : "请求失败",
    //     };
    //   } else {
    //     return {
    //       success: false,
    //       message: "登录已过期，请重新登录",
    //     };
    //   }
    // }
    
    const success = res && res.data && res.data.success === true;
    if (success) {
      return res.data;
    }
    return {
      success: false,
      message: res.data && res.data.message ? res.data.message : "请求失败",
    };
  } catch (error) {
    console.log("error:", error);
    if (showLoading) {
      removeTask(key)
    }
    return Promise.reject(error);
  }
};

function recordTask(task) {
  if (tasks.length === 0) {
    loading("请求中...");
  }
  tasks.push(task);
}

function removeTask(task) {
  const index = tasks.findIndex((i) => i === task);
  if (index > -1) {
    tasks.splice(index, 1);
  }
  if (tasks.length === 0) {
    hideLoading();
  }
}

export default request;

export const uploadUrl = `${baseUrl}/upload`;

export function getFullPath(path) {
  return `${baseUrl}/${path}`;
}


export function upload(path) {
  return new Promise((resolve) => {
    uni.uploadFile({
      url: uploadUrl, // 替换为你的上传接口地址
      filePath: path,
      name: 'file',
      fileType: 'image',
      success: (res) => {
        try {
          const url = JSON.parse(res.data).filePath;
          resolve(url ? getFullPath(url) : '')
        } catch (e) {
          resolve()
        }
      },
      fail: res => {
        resolve()
      }
    })
  })
}