null/common/request/index.js

import Request from './request'
import apiList from './api'
// import store from '../../store/index.js'
import Tools from '../tools.js'

const TAG_NAME="REQUEST INDEX.JS";
let cacheSessions = {}; //会话存储
//data._isRefresh用于第二次强制请求
export default function api(url, data = {},isNeedLoading=false) {
	const request = new Request();
	let api = getApiObj(url);
	// console.log('api---',api,url);
    let cacheType = api.cacheType;
	const cacheKey = getCacheKey('',url,data)
	/**
	 * 正常：return加工后config，用于真正request
	 * 异常：调用cancel后，request不在向下进行。type:2 resolve缓存结束。1reject
	*/
	request.interceptor.request((config, cancel) => { /* 请求之前拦截器 */
	    const token = uni.getStorageSync('token') || '';
		// console.log('request.interceptor.request',config);
		let res;
		//_isRefresh用于第二次请求
		if( cacheType === 'local' && !data._isRefresh){
			res = uni.getStorageSync(cacheKey);
		}else if( cacheType === 'session' && !data._isRefresh){
			// console.log('request.interceptor cacheType',cacheType,cacheSessions[cacheKey])
			// 第一次session--要判断否则JSON.parse报错
			if(cacheSessions[cacheKey]) res = JSON.parse(cacheSessions[cacheKey]);
		}
		if(res){
			//调用者继续向下运行 cancel，本方法继续向下进行
			cancel('已获得请求值，不再请求',res,2)
			
			// console.log('已获得请求值，不再请求---',cacheType,cacheSessions,res);
			return;
		}else if (api.auth && !token) {
			//request 调用者直接报错不再向下进行。本方法继续向下进行
			
			cancel('暂未登录,已阻止此次API请求~')
			setTimeout(()=>{
				uni.redirectTo({
					url:'/pages/index/loginMobile'
				})
			},800)
			return;
		}
		//正常情况下，返config用于下步请求~
		// console.log("request index",config);
		if (token) {
			config.data={...config.data,token};
		}
		return config;
	});

	request.interceptor.response((response) => { /* 请求之后拦截器 */
	  
	   //200情况
       const data = response.data;
       if( cacheType === 'local'){
		  (data && data.code === 1) &&  uni.setStorage({key: cacheKey,data: data})
       }else if(cacheType === 'session'){
		   // console.log('request.interceptor response before--',cacheKey,cacheSessions[cacheKey],JSON.stringify(data.data || ''));
		  (data && data.code === 1) && (cacheSessions[cacheKey] = JSON.stringify(data || '')); //统一request.js message还要用提示
		  // console.log('request.interceptor response after----',cacheSessions[cacheKey])
	   }
       return response;
		
	}, (error) => { // 除200都在 ---request.js由validateStatus决定
	    console.log('error--',error)
	    if (error.statusCode) {
			if(error.statusCode === 401){
				const pages = getCurrentPages()
				if(pages.length > 1 && pages[pages.length - 1].route== 'pages/login/login'){
					   //解决同时多个请求，都跳登录页情况
					   reject(TAG_NAME,'已在登录页，无需在次进入')
					   return;
				}
				// console.log(TAG_NAME,options.url,'重新登录~')
				uni.removeStorageSync('token')
				uni.navigateTo({url:'/pages/login/login'})  
				return;
				// setTimeout(()=>{
				//    //已有提示
				//    uni.redirectTo({
				// 	 url:'/pages/index/loginMobile'
				//    })  
				// },1200)
			}
	        Tools.msg(error.statusCode+' '+(error.data.msg|| '请求失败~'))
	    }else{
			Tools.msg('请求失败~')
		}
		return error;
	})

	return request.request({
		url: api.url,
		data,
		method: api.method,
		isNprogress: isNeedLoading || api.isNprogress,
		header: api.header,
	})

}

function getApiObj(url) {
	let apiArray = url.split(".");
	let api = apiList;
	apiArray.forEach(v => {
		api = api[v];
	});
	return api;
}
function getCacheKey(k, url,data={}){
	// mydate.getDay()+ mydate.getHours()+ mydate.getMinutes()+mydate.getSeconds()+mydate.getMilliseconds()+ Math.round(Math.random() * 10000);
	const key = k ? k : url;
	return  "cache-"+key+JSON.stringify(data)
}