<template>
	<view>
		<z-nav-bar title="电子书列表"></z-nav-bar>

		<view class="book_class">
			<view class="bc_list">
				<view class="bc_con" v-for="(item,index) in classFen" @click="FenBook(item)"
					:class="bookScreen.type == item.id ? 'bc_con bc_con_style' : 'bc_con'">{{item.sort}}</view>
			</view>
			<view class="bc_list">
				<view class="bc_con" v-for="(item,index) in classMian" @click="MianBook(item)"
					:class="bookScreen.is_charge == item.id ? 'bc_con bc_con_style' : 'bc_con'">{{item.sort}}</view>
			</view>
		</view>


		<view class="book_list">
			<view class="bl_tioa" v-for="(item,index) in bookList" @click="onBookJump(item)">
				<image :src="item.images"></image>
				<b v-if="item.isVip==1" style="background: #c79119;">VIP</b>
				<b v-if="item.isVip==2" style="background: #c74119;">付费</b>
				<view>
					<text class="bok_name">{{item.name}}</text>
				</view>
				<view>
					<text>作者：<text style="color: #333;">{{item.authorName}}</text></text>
				</view>
				<view>
					<text>出版商：<text style="color: #333;">{{item.publisherName}}</text></text>
				</view>
				<view>
					<text style="line-height: 20rpx;">{{item.title}}</text>
				</view>
			</view>
			<view style="height: 1px;"></view>
		</view>


		<view>
			<view v-if="status==0" style="text-align: center;">
				<u-loading-icon style="display: inline-block;"></u-loading-icon>
				<font style='vertical-align: super;margin-left: 10px;font-size: 26rpx;color: #909399;'>努力加载中</font>
			</view>
			<view v-if="status==1">
				<u-divider text="全部加载完成"></u-divider>
			</view>
		</view>

		<view style="padding-bottom: 20rpx;">
			<u-back-top :scroll-top="scrollTop" bottom="60" :customStyle='bgiStyle' :iconStyle="iconStyle"></u-back-top>
		</view>
	</view>
</template>

<script>
	export default {
		data() {
			return {
				scrollTop: 0,
				status: 3,
				classFen: [{
					sort: '全部',
					id: ''
				}, {
					sort: '医学',
					id: 1
				}, {
					sort: '国学',
					id: 2
				}, {
					sort: '文学',
					id: 3
				}, {
					sort: '古籍',
					id: 4
				}],
				classMian: [{
					sort: '免费',
					id: 1
				}, {
					sort: 'VIP',
					id: 0
				}],
				bookScreen: {
					authorName: '', //作者
					publisherName: '', //出版社
					type: '', //电子书类型
					bookName: '', //关键词
					is_charge: 1, //是否收费（0收费1免费）,
					state: 1,
					page: 1, //当前页码数
					limit: 5, //单页数据数量
				},
				totalPage: 0,
				totalCount: 0,
				bookList: [],
				bgiStyle: {
					background: '#2ab58833'
				},
				iconStyle: {
					fontSize: '40rpx',
					fontWeight: 'bold',
					color: '#54a966',
				},
			}
		},

		// 返回顶部
		onPageScroll(e) {
			this.scrollTop = e.scrollTop;
		},

		// 下拉刷新
		onReachBottom() {
			this.status = 0
			if (this.bookScreen.page < this.totalPage) {
				this.bookScreen.page = this.bookScreen.page + 1
				setTimeout(() => {
					this.$http
						.post('book/book/list', this.bookScreen)
						.then(res => {
							this.totalPage = res.page.totalPage
							this.totalCount = res.page.totalCount
							for (let i in res.page.list) {
								this.bookList.push(res.page.list[i])
							}
						});
				}, 1000)
			} else {
				this.status = 1
			}

		},

		//第一次加载
		onLoad(e) {
			if (e.id) {
				this.bookScreen.type = e.id
			}
			this.getData();
		},
		//页面显示
		onShow() {
			// this.getData();
		},
		// 下拉刷新
		onPullDownRefresh() {
			this.getData()
			uni.stopPullDownRefresh()
		},
		//方法
		methods: {
			// 获取列表数据
			getData() {
				this.bookList = []
				this.$http
					.post('book/book/list', this.bookScreen)
					.then(res => {
						this.bookList = res.page.list
						this.totalPage = res.page.totalPage
						this.status = 3
					});
			},

			// 分类选择
			FenBook(e) {
				if (e.id == 0) {
					this.bookScreen.type = ''
				} else {
					this.bookScreen.type = e.id
				}
				this.bookScreen.page = 1
				this.getData();
			},
			MianBook(e) {
				this.bookScreen.is_charge = e.id
				this.bookScreen.page = 1
				this.getData();
			},

			// 电子书内容跳转
			onBookJump(e) {
				uni.navigateTo({
					url: './bookContent?Id=' + e.id
				});
			},
		},

	};
</script>
<style lang="scss" scoped>
	@import '@/style/mixin.scss';


	.book_class {
		margin: 20rpx 30rpx 60rpx 30rpx;

		.bc_list {

			margin-bottom: 10rpx;

			.bc_con {
				display: inline-block;
				font-size: 28rpx;
				margin-right: 20rpx;
				border-radius: 20rpx;
				padding: 6rpx 12rpx;
			}

			.bc_con_style {
				color: #27b386;
				background-color: #2ab58833;
			}
		}
	}

	.book_list {
		margin: 50rpx 30rpx 0 30rpx;

		.bl_tioa {
			box-shadow: 0 0px 10px 1px #d3d1d133;
			background-color: #fff;
			position: relative;
			padding: 0 25upx 10upx 220upx;
			margin: 0 0 60rpx 0;
			border-radius: 15rpx;
			min-height: 250rpx;

			view {
				// margin: 0 0 10rpx 0;

				text {
					color: #9b9b9b;
					font-size: 24rpx;
					line-height: 36rpx;
				}

				.bok_name {
					font-weight: bold;
					color: #333;
					font-size: 28rpx;
				}
			}

			image {
				position: absolute;
				left: 30upx;
				top: -20upx;
				width: 160upx;
				height: 240upx;
			}

			b {
				display: block;
				padding: 5rpx 10rpx;
				border-radius: 10rpx;
				text-align: center;
				color: #fff;
				font-weight: normal;
				background: #27b386;
				position: absolute;
				left: -1upx;
				top: -10upx;
				font-size: 16rpx;
			}
		}

	}
</style>
