xiaochengxu/common/utils.js

///格式化显示时间
let formatTime = function(time,format = 'YY.MM.DD hh:mm'){
	let date = new Date(time * 1000);
	let year = date.getFullYear();
	let mouth = date.getMonth() + 1;
	let day = date.getDay();
	let hour = date.getHours();
	let min = date.getMinutes();
	//sec = date.getSeconds(),
	let preArr = Array.apply(null,Array(10)).map(function(elem,index){
		return '0' + index;
	});
	let newTime = format.replace(/YY/g,year).replace(/MM/g,preArr[mouth] || mouth)
	.replace(/DD/g,preArr[day] || day)
	.replace(/hh/g,preArr[hour] || hour)
	.replace(/mm/g,preArr[min] || min);
	return newTime;
}
/**
 * @param {Object} number 需要格式化的数字
 * @param {Object} decimals 保留几位小鼠
 * @param {Object} dec_point 小数点符号
 * @param {Object} thousands_sep 千分位符号
 */
let formatMoney = function(number,decimals,dec_point,thousands_sep){
	number = (number + '').replace(/[^0-9+-Ee.]/g, '');
	var n = !isFinite(+number) ? 0 : +number,

	prec = !isFinite(+decimals) ? 0 : Math.abs(decimals),
	sep = (typeof thousands_sep === 'undefined') ? ',' : thousands_sep,
	dec = (typeof dec_point === 'undefined') ? '.' : dec_point,
	s = '',
	toFixedFix = function (n, prec) {
		var k = Math.pow(10, prec);
		return '' + Math.floor(n * k) / k;
	};
	s = (prec ? toFixedFix(n, prec) : '' + Math.floor(n)).split('.');
	var re = /(-?\d+)(\d{3})/;
	console.log(s)
	while (re.test(s[0])) {
		s[0] = s[0].replace(re, "$1" + sep + "$2");
	}

	if ((s[1] || '').length < prec) {
		s[1] = s[1] || '';
		s[1] += new Array(prec - s[1].length + 1).join('0');
	}
	return s.join(dec);
}
/**
 * 微信检查登录状态是否过期，如果过期，需要要求用户重新授权
 * 如果过期了返回true,反则返回false
 */
let wechatCheckSession = async function(){
	var infoRes = await uni.checkSession({});
	console.log(infoRes);
	return infoRes.length <= 1;
}

/**
 * 获取使用者的微信信息，例如昵称，头像
 */
let wechatGetUserProfile = async function(){
	var infoRes = await uni.getUserProfile({
		desc:'用于显示您的头像和昵称。',
		lang:'zh_CN',
	});
	var len = infoRes.length;
	if(len == 2){
		//成功了
		var Define		= getApp().globalData.Define;
		var StoreKeys	= Define.StoreKeys;
		var nk			= StoreKeys.WeChatNickName;
		var hk			= StoreKeys.WeChatHeadUrl;
		var gk			= StoreKeys.WeChatGender;
		var info 		= infoRes[1];
		var userInfo	= info.userInfo;
		///缓存用户的昵称，头像地址，性别
		uni.setStorageSync(nk,userInfo.nickName);
		uni.setStorageSync(hk,userInfo.avatarUrl);
		uni.setStorageSync(gk,userInfo.gender);
		return true;
	}
	return false;
}

/**
 * 用户微信登录
 */
let wechatLogin = async function(){
	//首先检查本地是否有Token
	var Define		= getApp().globalData.Define;
	var StoreKeys	= Define.StoreKeys;
	var token		= uni.getStorageSync(StoreKeys.WeChatLoginToken);
	if(token){
		//如果存在这个token，证明是登录了的，我就不需要在登录
		return true;
	}
	var success = await wechatGetUserProfile();
	if(!success){
		//如果用户拒绝授权，给与提示信息
		uni.showToast({
			title:"获取用户信息失败，无法进行微信登录，请重试。"
		});
		return false;
	}
	var nickName 	= uni.getStorageSync(StoreKeys.WeChatNickName);
	var gender		= uni.getStorageSync(StoreKeys.WeChatGender);
	var headUrl		= uni.getStorageSync(StoreKeys.WeChatHeadUrl);
	
	var info		= await uni.login({
		provider:'weixin',
	});
	console.log("微信登录结果：",info);
	if(info.length <= 1){
		return false;
	}
	
	var codeArr = info[1];
	//这个code需要丢给服务器去进行一次验证
	var codestr	= codeArr.code;
	var urlstr	= Define.ServerInterfaces.WeChatLogin;
	var result 	= await uni.request({
		url:urlstr,
		data:{
			code : codestr,
			headimgurl : headUrl,
			nickname : nickName,
			sex : gender
		},
		method:'POST',
		header:{
			'content-type': 'application/json'
		},
	});
	console.log('result',result);
	return false;
}

export default{
	///格式化时间
	formatTime,
	///格式化金额
	formatMoney,
	///检查微信登录是否过期
	wechatCheckSession,
	///获取用户信息，需要用户授权
	wechatGetUserProfile,
	///微信登录
	wechatLogin,
}