<template>
	<view class="app-page">
		<view v-if="loading != 'success'" class="loading-wrap">
			<tm-skeleton model="listAvatr"></tm-skeleton>
			<tm-skeleton model="listAvatr"></tm-skeleton>
			<tm-skeleton model="listAvatr"></tm-skeleton>
		</view>
		<!-- 内容区域 -->
		<view v-else class="app-page-content">
			<view v-if="dataList.length == 0" class="content-empty flex flex-center" style="height: 70vh;">
				<!-- 空布局 -->
				<tm-empty icon="icon-shiliangzhinengduixiang-" label="暂无数据"></tm-empty>
			</view>
			<block v-else>
				<tm-translate v-for="(item, index) in dataList" :key="index"
					style="box-sizing: border-box;width: 50%;padding: 0 8rpx;" animation-name="fadeUp"
					:wait="calcAniWait(index)">
					<view class="catgory-card" :style="{backgroundImage:`url(${item.spec.cover})`}">
						<view class="content" @click="handleToCategory(item)">
							<view style="font-size: 32rpx;color: #ffffff;">{{ item.spec.displayName }}</view>
							<view style="font-size: 24rpx;color: #ffffff;margin-top: 6rpx;">共
								{{ item.postCount }} 篇文章
							</view>
						</view>
					</view>
				</tm-translate>
				<tm-flotbutton @click="fnToTopPage" size="m" color="light-blue" icon="icon-angle-up"></tm-flotbutton>
				<view class="load-text">{{ loadMoreText }}</view>
			</block>
		</view>
	</view>
</template>

<script>
	import tmSkeleton from '@/tm-vuetify/components/tm-skeleton/tm-skeleton.vue';
	import tmFlotbutton from '@/tm-vuetify/components/tm-flotbutton/tm-flotbutton.vue';
	import tmTranslate from '@/tm-vuetify/components/tm-translate/tm-translate.vue';
	import tmEmpty from '@/tm-vuetify/components/tm-empty/tm-empty.vue';

	import MarkdownConfig from '@/common/markdown/markdown.config.js';
	import mpHtml from '@/components/mp-html/components/mp-html/mp-html.vue';

	export default {
		components: {
			tmSkeleton,
			tmFlotbutton,
			tmTranslate,
			tmEmpty,
			mpHtml
		},
		data() {
			return {
				markdownConfig: MarkdownConfig,
				loading: 'loading',
				queryParams: {
					size: 20,
					page: 1
				},
				hasNext: false,
				dataList: [],
				isLoadMore: false,
				loadMoreText: '加载中...'
			};
		},

		onLoad() {
			this.fnGetData();
		},
		onPullDownRefresh() {
			this.isLoadMore = false;
			this.queryParams.page = 0;
			this.fnGetData();
		},

		onReachBottom(e) {
			if (this.hasNext) {
				this.queryParams.page += 1;
				this.isLoadMore = true;
				this.fnGetData();
			} else {
				uni.showToast({
					icon: 'none',
					title: '没有更多数据了'
				});
			}
		},
		methods: {
			fnGetData() {
				uni.showLoading({
					mask: true,
					title: '加载中...'
				});
				// 设置状态为加载中
				if (!this.isLoadMore) {
					this.loading = 'loading';
				}
				this.loadMoreText = '加载中...';
				this.$httpApi.v2
					.getCategoryList(this.queryParams)
					.then(res => {
						console.log('请求结果：');
						console.log(res);

						this.loading = 'success';
						this.loadMoreText = res.hasNext ? '上拉加载更多' : '呜呜，没有更多数据啦~';
						// 处理数据
						this.hasNext = res.hasNext;

						const tempItems = res.items.map(item => {
							item.spec.cover = this.$utils.checkThumbnailUrl(item.spec.cover, true)
							return item;
						})

						if (this.isLoadMore) {
							this.dataList = this.dataList.concat(tempItems);
						} else {
							this.dataList = tempItems;
						}
					})
					.catch(err => {
						console.error(err);
						this.loading = 'error';
						this.loadMoreText = '加载失败，请下拉刷新！';
					})
					.finally(() => {
						setTimeout(() => {
							uni.hideLoading();
							uni.stopPullDownRefresh();
						}, 500);
					});
			},
			handlePreview(index, list) {
				uni.previewImage({
					current: index,
					urls: list.map(item => item.url)
				})
			},
			handleToCategory(data) {
				uni.navigateTo({
					url: `/pagesA/category-detail/category-detail?name=${data.metadata.name}&title=${data.spec.displayName}`
				})
			}
		}
	};
</script>

<style lang="scss" scoped>
	.app-page {
		width: 100vw;
		display: flex;
		flex-direction: column;
		padding: 24rpx 0;
	}

	.loading-wrap {
		padding: 24rpx;
	}

	.app-page-content {
		display: flex;
		flex-wrap: wrap;
		padding: 0 12rpx;
		gap: 20rpx 0;
	}

	.catgory-card {
		width: 100%;
		height: 200rpx;
		position: relative;
		display: flex;
		flex-direction: column;
		box-sizing: border-box;
		border-radius: 12rpx;
		background-color: #ffff;
		box-shadow: 0rpx 2rpx 24rpx rgba(0, 0, 0, 0.03);
		overflow: hidden;
		background-repeat: no-repeat;
		background-size: cover;

		&:before {
			content: '';
			position: absolute;
			left: 0;
			top: 0;
			right: 0;
			bottom: 0;
			background-color: rgba(0, 0, 0, 0.15);
			z-index: 1;
		}
	}

	.content {
		width: 100%;
		height: 100%;
		position: relative;
		z-index: 2;
		display: flex;
		flex-direction: column;
		align-items: center;
		justify-content: center;
	}

	.load-text {
		width: 100%;
		text-align: center;
	}
</style>