/**
 * 通用uni-app网络请求
 * 基于 Promise 对象实现更简单的 request 使用方式，支持请求和响应拦截
 */
import config from '@/utils/config.js';
import md5 from '@/utils/md5.js';
import constant from "@/utils/constant"; //常量
/*
// 开放的接口
import http from './interface'

http.config.baseUrl = "http://localhost:8080/api/"

http.request(url:'user/list',method:'GET').then((res)=>{
	console.log(JSON.stringify(res))
})
http.get('user/list').then((res)=>{
	console.log(JSON.stringify(res))
})
http.get('user/list', {status: 1}).then((res)=>{
	console.log(JSON.stringify(res))
})
http.post('user', {id:1, status: 1}).then((res)=>{
	console.log(JSON.stringify(res))
})
http.put('user/1', {status: 2}).then((res)=>{
	console.log(JSON.stringify(res))
})
http.delete('user/1').then((res)=>{
	console.log(JSON.stringify(res))
}) 
*/
let requestList = {} //api请求记录
// 将当前请求的api记录起来
function addRequestKey(key) {
	requestList[key] = true
}
// 将请求完成的api从记录中移除

function removeRequestKey(key) {
	delete requestList[key]
}
//当前请求的api是否已有记录
function hitRequestKey(key) {
	return requestList[key];
}
// 获取串行请求的key,方便记录
function getLockRequestKey(url, data) {
	let lockKey = url;
	try {
		if (data) {
			lockKey += JSON.stringify(data)
		}
	} catch (e) {}
	return lockKey;
}
//签名函数处理
function getSign(jsondata) {
  let arr = [];
  for (let key in jsondata) {
    if (key !== "sign") {
      arr.push(key + "=" + jsondata[key]);
    }
  }
  arr.sort();
  let sign = decodeURIComponent(arr.join("") + "guagua");
  return md5.md5(sign);
}
let that = null,lockKeyData = null;
export default {
	config: {
		isWaiting: true,
		baseUrl:config.baseUrl,
		header: {
			"Content-Type":"application/x-www-form-urlencoded"
		},
		data: {},
		method: "GET",
		dataType: "json",
		/* 如设为json，会对返回的数据做一次 JSON.parse */
		responseType: "text",
		success(res) {
			that.config.isWaiting && uni.hideLoading();
		},
		fail(res) {
			that.config.isWaiting && uni.hideLoading();
		},
		complete() {

		}
	},
	interceptor: {
		request: null,
		response: null
	},
	request(options) {
		that = this;
		if (!options) {
			options = {}
		}
		options.baseUrl = options.baseUrl || this.config.baseUrl;
		options.dataType = options.dataType || this.config.dataType;
		options.url = options.baseUrl + options.url;
		options.data = options.data || {};
		options.method = options.method || this.config.method;
		//添加参数自定义参数
		lockKeyData = getLockRequestKey(options.url, options.data);
		if (hitRequestKey(lockKeyData)) {
			console.log(requestList)
			return false;
		}
		addRequestKey(lockKeyData);
		let isWaiting = true;
		if (options.data && options.data.isWaiting === false) {
			isWaiting = false;
			delete options.data.isWaiting;
		}
		isWaiting && uni.showLoading({
			title: '加载中',
			mask: true
		});
		//TODO 加密数据
		//TODO 数据签名
		
		let loginInfo = uni.getStorageSync(constant.LOGIN_INFO) || {};
		options.data.time = parseInt(new Date().getTime() / 1000);
		if(loginInfo && loginInfo.UserId){
			options.data.UserId = loginInfo.UserId;//用户id
		}
		this.config.header.loginTicket = loginInfo.loginTicket || ""; //防止数据串改
		options.data.sign = getSign(options.data);
			
		return new Promise((resolve, reject) => {
			let _config = null;
			options.complete = (response) => {
				let statusCode = response.statusCode;
				response.config = _config;
				if (process.env.NODE_ENV === 'development') {
					if (statusCode === 200) {
						//console.log("【" + _config.requestId + "】 结果：" + JSON.stringify(response.data))
					}
				}
				if (this.interceptor.response) {
					let newResponse = this.interceptor.response(response);
					if (newResponse) {
						response = newResponse;
					}
				}
				// 统一的响应日志记录
				_reslog(response);
				if (statusCode === 200) { //成功
					resolve(response);
				} else {
					reject(response);
				}
			}
			_config = Object.assign({}, this.config, options);
			_config.requestId = new Date().getTime();

			if (this.interceptor.request) {
				this.interceptor.request(_config);
			}
			// 统一的请求日志记录
			_reqlog(_config);
			uni.request(_config);
		});
	},
	get(url, data, options) {
		if (!options) {
			options = {}
		}
		options.url = url
		options.data = data
		options.method = 'GET'
		return this.request(options)
	},
	post(url, data, options) {
		if (!options) {
			options = {}
		}
		options.url = url
		options.data = data
		options.method = 'POST'
		return this.request(options)
	},
	put(url, data, options) {
		if (!options) {
			options = {}
		}
		options.url = url
		options.data = data
		options.method = 'PUT'
		return this.request(options)
	},
	delete(url, data, options) {
		if (!options) {
			options = {}
		}
		options.url = url
		options.data = data
		options.method = 'DELETE'
		return this.request(options)
	}
}


/**
 * 请求接口日志记录
 */
function _reqlog(req) {
	removeRequestKey(lockKeyData); //删除请求的key
	if (process.env.NODE_ENV === 'development') {
		//console.log("【" + req.requestId + "】 地址：" + req.url)
		if (req.data) {
			console.log("【" + req.requestId + "】 请求参数：" + JSON.stringify(req.data))
		}
	}
	//TODO 调接口异步写入日志数据库
}

/**
 * 响应接口日志记录
 */
function _reslog(res) {
	let _statusCode = res.statusCode;
	if (process.env.NODE_ENV === 'development') {
		//console.log("【" + res.config.requestId + "】 地址：" + res.config.url)
		if (res.config.data) {
			console.log("【" + res.config.requestId + "】 响应参数：" + JSON.stringify(res.config.data))
		}
		//console.log("【" + res.config.requestId + "】 响应结果：" + JSON.stringify(res))
	}
	//TODO 除了接口服务错误外，其他日志调接口异步写入日志数据库
	switch (_statusCode) {
		case 200:
			break;
		case 401:
			break;
		case 404:
			break;
		default:
			break;
	}
}