/**
 * 通用js方法封装处理
 * Copyright (c) 2019 ruoyi
 */

// 日期格式化
export function parseTime(time, pattern) {
	if (arguments.length === 0 || !time) {
		return null
	}
	const format = pattern || '{y}-{m}-{d} {h}:{i}:{s}'
	let date
	if (typeof time === 'object') {
		date = time
	} else {
		if ((typeof time === 'string') && (/^[0-9]+$/.test(time))) {
			time = parseInt(time)
		} else if (typeof time === 'string') {
			time = time.replace(new RegExp(/-/gm), '/').replace('T', ' ').replace(new RegExp(/\.[\d]{3}/gm), '');
		}
		if ((typeof time === 'number') && (time.toString().length === 10)) {
			time = time * 1000
		}
		date = new Date(time)
	}
	const formatObj = {
		y: date.getFullYear(),
		m: date.getMonth() + 1,
		d: date.getDate(),
		h: date.getHours(),
		i: date.getMinutes(),
		s: date.getSeconds(),
		a: date.getDay()
	}
	const time_str = format.replace(/{(y|m|d|h|i|s|a)+}/g, (result, key) => {
		let value = formatObj[key]
		// Note: getDay() returns 0 on Sunday
		if (key === 'a') {
			return ['日', '一', '二', '三', '四', '五', '六'][value]
		}
		if (result.length > 0 && value < 10) {
			value = '0' + value
		}
		return value || 0
	})
	return time_str
}

/**
 * 构造树型结构数据
 * @param {*} data 数据源
 * @param {*} id id字段 默认 'id'
 * @param {*} parentId 父节点字段 默认 'parentId'
 * @param {*} children 孩子节点字段 默认 'children'
 * @param {*} rootId 根Id 默认 0
 */
export function handleTree(data, id, parentId, children, rootId) {
	id = id || 'id'
	parentId = parentId || 'parentId'
	children = children || 'children'
	rootId = rootId || Math.min.apply(Math, data.map(item => {
		return item[parentId]
	})) || 0
	//对源数据深度克隆
	const cloneData = JSON.parse(JSON.stringify(data))
	//循环所有项
	const treeData = cloneData.filter(father => {
		let branchArr = cloneData.filter(child => {
			//返回每一项的子级数组
			return father[id] === child[parentId]
		});
		branchArr.length > 0 ? father.children = branchArr : '';
		//返回第一层
		return father[parentId] === rootId;
	});
	return treeData !== '' ? treeData : data;
}

/**
 * 获取文件类型
 * @param {String} fileName 文件名称
 * @returns {String} fileType => '', image, video, audio, office, unknown
 */
export function getFileType(fileName = '') {
	const flieArr = fileName.split('.');
	let suffix = flieArr[flieArr.length - 1];
	if (!suffix) return '';
	suffix = suffix.toLocaleLowerCase();
	const image = ['png', 'jpg', 'jpeg', 'bmp', 'gif', 'webp'];
	if (image.includes(suffix)) return 'image';
	const video = ['mp4', 'm4v'];
	if (video.includes(suffix)) return 'video';
	const audio = ['mp3', 'm4a', 'wav', 'aac'];
	if (audio.includes(suffix)) return 'audio';
	const office = ['pdf', 'doc', 'docx', 'xls', 'xlsx', 'ppt', 'pptx', 'txt', 'plain'];
	if (office.includes(suffix)) return 'office';
	return 'unknown';
}