<template>
	<view class="container">

		<!-- 城市列表 -->
		<view v-show="!isReach">
			<!-- 当前城市 -->
			
			<!-- <u-gap height="8" bgColor="#F8F8F8"></u-gap> -->
			<scroll-view class="scroll-view" scroll-y scroll-with-animation="true" enable-back-to-top="true"
				:scroll-into-view="toIndex" @scroll="scrollHandle">
				
				<!-- 城市列表  -->
				<view class="city-list">
					<view class="list list-item" v-for="(item, key) of resultObject" :key="key" :id="key">
						<view class="title">{{ key }}</view>
						<view class="item borderBottom" hover-class="hover" v-for="innerItem in item"
							:key="innerItem.cityId" @click="selectCity(innerItem)"
							style="width: 90%;display: flex;flex-wrap: nowrap; align-items: center;"
							>
							<view class="imagebox">
                                <image src=" https://file.langsi.online/yasiimg/web/static/udWNTRG6GulmTtgPRQ49"></image>
                            </view>
							 <view style="width: 50%;text-align: left;">{{ innerItem.spell }}</view>
						</view>
					</view>
				</view>
			</scroll-view>

			<!-- 字母列表 -->
			<view class="alphabet" @touchstart="touchStart" @touchend="touchEnd" @touchmove.stop="touchMove">
				<view v-for="(item, index) in alphabet" :key="index" @touchstart="getLetter" @touchend="setLetter"
					:id="item">
					
					<view class="item" :class="{ active: currentLetter == item }">
						{{ item == "hot"  ? "#" :item  }}
					</view>
				</view>
			</view>
		</view>
	</view>
</template>

<script>
	
	export default {
		data() {
			return {
				isReach: false,
				resultObject:{},
				alphabet: [], //字母列表
				toIndex: "", //跳转的索引的字母
				tipsLetter: "", //滑动显示字母
				timer: null,
				hasNoData: false,
				searchFocus: false,
				letterDetails: [],
				currentLetter: "地区" ,//默认选择hot
				adress:"" //当前位置
			};
		},
		watch: {

		},
		created() {
			//真实数据请求...
			this.generateNames()
		},
		onLoad(option) {
			// this.areaName=option.name
		},
		methods: {
			generateNames() {
			    // 生成随机中文名字
			    const familyNames = [
			        "赵", "钱", "孙", "李", "周", "吴", "郑", "王", "冯", "陈", "褚", "卫", "蒋", "沈", "韩", "杨", "朱", "秦", "尤", "许", "何", "吕", "施", "张", "孔", "曹", "严", "华", "金", "魏", "陶", "姜", "戚", "谢", "邹", "喻", "柏", "水", "窦", "章", "云", "苏", "潘", "葛", "奚", "范", "彭", "郎", "鲁", "韦", "昌", "马", "苗", "凤"
			    ];
			    const givenNames = [
			        "乐", "思", "彤", "悦", "欣", "怡", "雨", "晴", "静", "雅", "婷", "舒", "涵", "瑶", "蓉", "梦", "雪", "娜", "琳", "佳", "蕾", "琪", "媛", "璐"
			    ];
			
			    const usedFirstLetters = []; // 已使用的首字母
			    const studentNames = [];
			
			    while (studentNames.length < 24) {
			        const familyIndex = Math.floor(Math.random() * familyNames.length);
			        const givenIndex = Math.floor(Math.random() * givenNames.length);
			        const firstName = familyNames[familyIndex];
			        const lastName = givenNames[givenIndex];
			
			        // 检查首字母是否已使用
			        const firstLetter = firstName.charAt(0);
			        if (!usedFirstLetters.includes(firstLetter)) {
			            usedFirstLetters.push(firstLetter);
			            const fullName = firstName + lastName;
			            studentNames.push(fullName);
			        }
			    }
			
			    this.studentNames = studentNames;
				this.generateNameMap()
				console.log('运行了',this.studentNames);
			},
			generateNameMap() {
			  const nameMap = {};
			     const alphabet = [];
			 
			     this.studentNames.forEach(fullName => {
			         const firstLetter = this.getEnglishFirstLetter(fullName.charAt(0));
			 
			         if (!nameMap[firstLetter]) {
			             nameMap[firstLetter] = [];
			             alphabet.push(firstLetter);
			         }
			 
			         nameMap[firstLetter].push({
			             "spell": fullName,
			         });
			     });
			 
			     // 删除city和cityId字段
			     const sortedAlphabet = alphabet.sort();
			     const resultObject = {};
			 
			     sortedAlphabet.forEach(key => {
			         resultObject[key] = nameMap[key].map(item => ({ "spell": item.spell }));
			     });
			 
			     console.log(resultObject, 'resultObject');
			     console.log("alphabet:", sortedAlphabet);
				 this.alphabet=sortedAlphabet
				this.resultObject=resultObject
			     this.alphabet.unshift('#');
			    // return resultArray;
			},
			
			getEnglishFirstLetter(chineseCharacter) {
			    const pinyin = this.simpleChineseToPinyin(chineseCharacter);
			    return pinyin.charAt(0).toUpperCase();
			},
			
			simpleChineseToPinyin(chineseCharacter) {
			    // 简单的中文转拼音的映射表
			    const pinyinMap = {
			        "赵": "zhao", "钱": "qian", "孙": "sun", "李": "li", "周": "zhou", "吴": "wu", "郑": "zheng", "王": "wang",
			        "冯": "feng", "陈": "chen", "褚": "zhu", "卫": "wei", "蒋": "jiang", "沈": "shen", "韩": "han", "杨": "yang",
			        "朱": "zhu", "秦": "qin", "尤": "you", "许": "xu", "何": "he", "吕": "lv", "施": "shi", "张": "zhang",
			        "孔": "kong", "曹": "cao", "严": "yan", "华": "hua", "金": "jin", "魏": "wei", "陶": "tao", "姜": "jiang",
			        "戚": "qi", "谢": "xie", "邹": "zou", "喻": "yu", "柏": "bai", "水": "shui", "窦": "dou", "章": "zhang",
			        "云": "yun", "苏": "su", "潘": "pan", "葛": "ge", "奚": "xi", "范": "fan", "彭": "peng", "郎": "lang",
			        "鲁": "lu", "韦": "wei", "昌": "chang", "马": "ma", "苗": "miao", "凤": "feng"
			    };
			
			    return pinyinMap[chineseCharacter] || chineseCharacter;
			},

			//列表滚动，和右边字母表对应
			scrollHandle(e) {
				let view = uni.createSelectorQuery().in(this).selectAll(".list-item");
				view.boundingClientRect(d => {
					let top = d[0].top;
					d.forEach(item => {
						item.top = item.top - top;
						item.bottom = item.bottom - top;
						this.letterDetails.push({
							id: item.id,
							top: item.top,
							bottom: item.bottom
						});
					});
				}).exec();

				const scrollTop = e.detail.scrollTop;
				this.letterDetails.some(item => {
					if (scrollTop >= item.top && scrollTop <= item.bottom - 20) {
						this.currentLetter = item.id;
						//当前固定用的是粘性定位，如果不用粘性定位，在这里设置
						return true;
					}
				});
			},
			
			
			
			
			//区域选择
			selectRegion(item) {
				console.log('选择的区域是：', item)
			},

			//触发开始
			touchStart(e) {
				console.log(e);
			},
			//移动时
			touchMove(e) {
				uni.vibrateShort();
				let y = e.touches[0].clientY;
				let offsettop = e.currentTarget.offsetTop;

				//判断选择区域,只在选择区才会生效
				if (y > offsettop) {
					let num = parseInt((y - offsettop) / 15); //右边每个字母元素的高度
					let letter = this.alphabet[num];
					this.tipsLetter = letter;

					let curentLetter = this.letterTransform(letter);
					uni.showToast({
						title: curentLetter,
						icon: "none",
						duration: 1000
					});
				}
			},
			//触发结束
			touchEnd() {
				this.toIndex = this.tipsLetter;
			},
			//移动开始获取字母，并放大提示
			getLetter(e) {
				uni.vibrateShort();
				let {
					id
				} = e.currentTarget;
				this.tipsLetter = id;

				let curentLetter = this.letterTransform(id);
				uni.showToast({
					title: curentLetter,
					icon: "none",
					duration: 1000
				});
			},
			//移动结束设置字母，赋值到toIndex
			setLetter() {
				this.toIndex = this.tipsLetter;
			},

			//提示字母转换
			letterTransform(letter) {
				let str = "";
				if (letter == "hot") {
					str = "地区";
				} else {
					str = letter;
				}

				return str;
			}
		}
	};
</script>

<style lang="scss" scoped>
	.borderBottom {}

	.reach-content {
		padding-top: 60rpx;

		.li {
			font-size: 32rpx;
			color: #333;
			padding: 20rpx 0;
			position: relative;
		}
	}

	.block {
		box-sizing: border-box;
	}





	.scroll-view {
		width: 100%;
		height: 918rpx;
		background: #ffffff;
		box-sizing: border-box;
        border-radius: 20rpx 20rpx 0rpx 0rpx;
        
	}

	

	.city-list {
        margin-top: 32rpx;
		width: 677rpx;
		padding-bottom: 50rpx;
        

		.title {
			// height: 60rpx;
			
			font-size: 28rpx;
            font-family: PingFang SC, PingFang SC;
            font-weight: 800;
            color: #2E4975;
			// margin-bottom: 20rpx;
			padding-left: 32rpx;
			background-color: #fff;
			position: sticky;
			top: 0;
			left: 0;
			z-index: 2;
		}

		.item {
			padding: 22rpx 0 18rpx 32rpx;
			font-size: 24rpx;
            font-family: PingFang SC, PingFang SC;
            font-weight: 500;
            color: #072F5A;
            margin-bottom: 32rpx;
			&::after {
				left: 30rpx;
				width: calc(100% - 30rpx);
				background: #d2d2d2;
			}
            .imagebox{
                margin-right: 20rpx;
                width: 56rpx;
                height: 56rpx;
            }
		}

		.hover {
			background: #f4f5f9;

			&::after {
				background: #f4f5f9;
			}
		}
	}

	.alphabet {
		position: fixed;
		right: 10rpx;
		bottom: 15%;
		width: calc(750rpx - 680rpx);
		text-align: center;
		font-size: 16rpx;
		font-family: PingFang SC, PingFang SC;
		font-weight: 500;
		color: rgba(46,73,117,0.5);


		.item {
			height: 30rpx;
			line-height: 30rpx;
			margin: 6rpx 0;
		}

		.active {
			color: #222;
		}
	}

	.has-no-data {
		font-size: 24rpx;
		text-align: center;
		color: #8e8f97;
		margin-top: 50rpx;
	}
</style>
