<template>
	<view class="content">
		<view class="searchBox">
			<view class="inputBox">
				<input type="text" :placeholder="defaultKeyword" @input="inputChange" v-model="keyword" @confirm="doSearch(false)"
				 placeholder-class="placeholder-class" confirm-type="search">
			</view>
			<view class="searchBtn" @tap="doSearch(false)">搜索</view>
		</view>
		<view class="search-keyword" @touchstart="blur">
			<scroll-view class="keywordListBox" v-show="isShowKeywordList" scroll-y>
				<view class="keywordEntry" hover-class="keywordEntryTap" v-for="row in keywordList" wx:key="row.keyword">
					<view class="keywordText" @tap="doSearch(row.keyword)">
						<rich-text :nodes="row.htmlStr"></rich-text>
					</view>
					<view class="keywordImg" @tap="setkeyword(row)">
						<image src="https://static.lancerdt.com/xcxfile/appicon/search/back.png"></image>
					</view>
				</view>
			</scroll-view>
			<scroll-view class="keywordBox" v-show="!isShowKeywordList" scroll-y>
				<view class="keyword-block" v-if="oldKeywordList.length>0">
					<view class="keyword-list-header">
						<view>历史搜索</view>
						<view>
							<image @tap="oldDelete" src="https://static.lancerdt.com/xcxfile/appicon/search/delete.png"></image>
						</view>
					</view>
					<view class="keyword">
						<view v-for="key in oldKeywordList" @tap="doSearch(key)" wx:key="key">{{key}}</view>
					</view>
				</view>
				<view class="keyword-block">
					<view class="keyword-list-header">
						<view>热门搜索</view>
						<view>
							<image @tap="hotToggle" :src="'https://static.lancerdt.com/xcxfile/appicon/search/attention'+forbid+'.png'"></image>
						</view>
					</view>
					<view class="keyword" v-if="forbid==''">
						<view v-for="key in hotKeywordList" @tap="doSearch(key)" wx:key="key">{{key}}</view>
					</view>
					<view class="hideHotTis" v-else>
						<view>当前搜热门搜索已隐藏</view>
					</view>
				</view>
			</scroll-view>
		</view>
	</view>
</template>

<script>
	export default {
		data() {
			return {
				defaultKeyword: "",
				keyword: "",
				oldKeywordList: [],
				hotKeywordList: [],
				keywordList: [],
				forbid: '',
				isShowKeywordList: false
			}
		},
		onLoad() {
			uni.setNavigationBarTitle({
				title:this.__('')
			});
			this.init();
		},
		methods: {
			init() {
				this.loadDefaultKeyword();
				this.loadOldKeyword();
				this.loadHotKeyword();

			},
			blur(){
				uni.hideKeyboard()
			},
			//加载默认搜索关键字
			loadDefaultKeyword() {
				//定义默认搜索关键字，可以自己实现ajax请求数据再赋值,用户未输入时，以水印方式显示在输入框，直接不输入内容搜索会搜索默认关键字
				this.defaultKeyword = "默认关键字";
			},
			//加载历史搜索,自动读取本地Storage
			loadOldKeyword() {
				uni.getStorage({
					key: 'OldKeys',
					success: (res) => {
						var OldKeys = JSON.parse(res.data);
						this.oldKeywordList = OldKeys;
					}
				});
			},
			//加载热门搜索
			loadHotKeyword() {
				//定义热门搜索关键字，可以自己实现ajax请求数据再赋值
				this.hotKeywordList = ['键盘', '鼠标', '显示器', '电脑主机', '蓝牙音箱', '笔记本电脑', '鼠标垫', 'USB', 'USB3.0'];
			},
			//监听输入
			inputChange(event) {
				var keyword = event.detail.value;
				if (!keyword) {
					this.keywordList = [];
					this.isShowKeywordList = false;
					return;
				}
				this.isShowKeywordList = true;
				//以下示例截取淘宝的关键字，请替换成你的接口
				uni.request({
					url: 'https://suggest.taobao.com/sug?code=utf-8&q=' + keyword, //仅为示例
					success: (res) => {
						this.keywordList = this.drawCorrelativeKeyword(res.data.result, keyword);
					}
				});
			},
			//高亮关键字
			drawCorrelativeKeyword(keywords, keyword) {
				var len = keywords.length,
					keywordArr = [];
				for (var i = 0; i < len; i++) {
					var row = keywords[i];
					//定义高亮#9f9f9f
					var html = row[0].replace(keyword, "<span style='color: #9f9f9f;'>" + keyword + "</span>");
					html = '<div>' + html + '</div>';
					var tmpObj = {
						keyword: row[0],
						htmlStr: html
					};
					keywordArr.push(tmpObj)
				}
				return keywordArr;
			},
			//顶置关键字
			setkeyword(data) {
				this.keyword = data.keyword;
			},
			//清除历史搜索
			oldDelete() {
				let that = this;
				that.$.showModal({
					content: '确定清除历史搜索记录？',
					success: (res) => {
						if (res.confirm) {
							//console.log('用户点击确定');
							this.oldKeywordList = [];
							uni.removeStorage({
								key: 'OldKeys'
							});
						} else if (res.cancel) {
							//console.log('用户点击取消');
						}
					}
				});
			},
			//热门搜索开关
			hotToggle() {
				this.forbid = this.forbid ? '' : '_forbid';
			},
			//执行搜索
			doSearch(key) {
				key = key ? key : this.keyword ? this.keyword : this.defaultKeyword;
				this.keyword = key;
				this.saveKeyword(key); //保存为历史
				uni.showToast({
					title: key,
					icon: 'none',
					duration: 2000
				});
				//以下是示例跳转淘宝搜索，可自己实现搜索逻辑
				//#ifdef APP-PLUS
				plus.runtime.openURL(encodeURI('taobao://s.taobao.com/search?q=' + key));
				//#endif
				//#ifdef H5
				window.location.href = 'taobao://s.taobao.com/search?q=' + key
				//#endif
			},
			//保存关键字到历史记录
			saveKeyword(keyword) {
				uni.getStorage({
					key: 'OldKeys',
					success: (res) => {
						//console.log(res.data);
						var OldKeys = JSON.parse(res.data);
						var findIndex = OldKeys.indexOf(keyword);
						if (findIndex == -1) {
							OldKeys.unshift(keyword);
						} else {
							OldKeys.splice(findIndex, 1);
							OldKeys.unshift(keyword);
						}
						//最多10个纪录
						OldKeys.length > 10 && OldKeys.pop();
						uni.setStorage({
							key: 'OldKeys',
							data: JSON.stringify(OldKeys)
						});
						this.oldKeywordList = OldKeys; //更新历史搜索
					},
					fail: (e) => {
						var OldKeys = [keyword];
						uni.setStorage({
							key: 'OldKeys',
							data: JSON.stringify(OldKeys)
						});
						this.oldKeywordList = OldKeys; //更新历史搜索
					}
				});
			}
		}
	}
</script>
<style>
	.searchBox {width:95%;background-color:rgb(242,242,242);padding:7.5px 2.5%;display:flex;justify-content:space-between;}
	.searchBox .inputBox {width:85%;flex-shrink:1;display:flex;justify-content:center;align-items:center;}
	.searchBox .searchBtn {width:15%;margin:0 0 0 2%;display:flex;justify-content:center;align-items:center;flex-shrink:0;font-size:14px;color:#fff;background:linear-gradient(to right,#ff9801,#ff570a);border-radius:30px;}
	.searchBox .inputBox>input {width:100%;height:30px;font-size:16px;border:0;border-radius:30px;-webkit-appearance:none;-moz-appearance:none;appearance:none;padding:0 3%;margin:0;background-color:#ffffff;}
	.placeholder-class {color:#9e9e9e;}
	.search-keyword {width:100%;background-color:rgb(242,242,242);}
	.keywordListBox {height:calc(100vh - 55px);padding-top:5px;border-radius:10px 10px 0 0;background-color:#fff;}
	.keywordEntryTap {background-color:#eee;}
	.keywordEntry {width:94%;height:40px;margin:0 3%;font-size:15px;color:#333;display:flex;justify-content:space-between;align-items:center;border-bottom:solid 1px #e7e7e7;}
	.keywordEntry image {width:30px;height:30px;}
	.keywordEntry .keywordText,.keywordEntry .keywordImg {height:40px;display:flex;align-items:center;}
	.keywordEntry .keywordText {width:90%;}
	.keywordEntry .keywordImg {width:10%;justify-content:center;}
	.keywordBox {height:calc(100vh - 55px);border-radius:10px 10px 0 0;background-color:#fff;}
	.keywordBox .keyword-block {padding:5px 0;}
	.keywordBox .keyword-block .keyword-list-header {width:94%;padding:5px 3%;font-size:13.5px;color:#333;display:flex;justify-content:space-between;}
	.keywordBox .keyword-block .keyword-list-header image {width:20px;height:20px;}
	.keywordBox .keyword-block .keyword {width:94%;padding:3px 3%;display:flex;flex-flow:wrap;justify-content:flex-start;}
	.keywordBox .keyword-block .hideHotTis {display:flex;justify-content:center;font-size:14px;color:#6b6b6b;}
	.keywordBox .keyword-block .keyword>view {display:flex;justify-content:center;align-items:center;border-radius:30px;padding:0 10px;margin:5px 10px 5px 0;height:30px;font-size:14px;background-color:rgb(242,242,242);color:#6b6b6b;}
</style>
