<template>
	<view class="zhinan-list-page">
		<!-- 头部导航栏 -->
		<uni-nav-bar
			left-icon="left" 
			title="诊疗指南" 
			@clickLeft="goBack" 
			fixed 
			color="#8B2316" 
			height="140rpx" 
			:border="false" 
			backgroundColor="#eeeeee"
		>
			<template v-slot:right>
				<view class="nav-right" @click="testLoadMore">
					<text style="font-size: 24rpx; color: #8B2316;">测试加载</text>
				</view>
			</template>
		</uni-nav-bar>
		
		<!-- 使用scroll-view实现列表 -->
		<scroll-view
			class="guidelines-scroll-view"
			scroll-y="true"
			:refresher-enabled="true"
			:refresher-triggered="isRefreshing"
			@refresherrefresh="onRefresh"
			@scrolltolower="onScrollToLower"
			:show-scrollbar="false"
		>
			<!-- 指南列表 -->
			<view class="guidelines-list">
				<view 
					class="guideline-item" 
					v-for="(item, index) in guidelinesList" 
					:key="item.uuid || index"
				>
					<!-- 指南信息 -->
					<view class="item-content">
						<view class="item-title">{{ item.title }}</view>
						<view class="item-bottom">
							<view class="item-date">{{ formatDate(item.releaseTime) }}</view>
							<!-- 操作按钮 -->
							<view class="item-action">
								<view 
									v-if="item.can_download" 
									class="download-btn"
									@click="downloadGuideline(item)"
								>
									<up-icon name="download" color="#8D2316" size="28"></up-icon>
								</view>
								<view 
									v-else 
									class="view-btn"
									@click="viewGuideline(item)"
								>
									查看
								</view>
							</view>
						</view>
					</view>
				</view>
			</view>
			
			<!-- 加载更多状态 -->
			<view class="load-more-status">
				<view v-if="loadMoreStatus === 'loading'" class="loading">
					<uni-icons type="spinner-cycle" size="20" color="#999"></uni-icons>
					<text>加载中...</text>
				</view>
				<view v-else-if="loadMoreStatus === 'more'" class="more">
					<text>上拉加载更多</text>
				</view>
				<view v-else-if="loadMoreStatus === 'noMore'" class="no-more">
					<text>没有更多数据了</text>
				</view>
			</view>
			
			<!-- 无数据提示 -->
			<view class="no-data" v-if="guidelinesList.length === 0 && !isLoading">
				<uni-icons type="info" size="60" color="#999"></uni-icons>
				<text>暂无诊疗指南数据</text>
			</view>
		</scroll-view>
	</view>
</template>

<script setup>
import { ref, onMounted} from 'vue'
import api from '@/api/api.js'
import { onShow,onLoad } from "@dcloudio/uni-app";

// 响应式数据
const guidelinesList = ref([])
const isLoading = ref(false)
const hasMoreData = ref(true)
const currentPage = ref(1)
const pageSize = ref(10)
const isRefreshing = ref(false)
const keywords=ref('');
const loadMoreStatus = ref('more') // 'loading', 'more', 'noMore'

onLoad((options)=>{
	console.log(options)
	keywords.value=decodeURIComponent(options.keywords);
	console.log(keywords.value);
})

onShow(() => {
	// 页面显示时，如果列表为空则加载数据
	if (guidelinesList.value.length === 0) {
		loadGuidelinesList(true)
	}
})

// scroll-view 下拉刷新
const onRefresh = async () => {
	console.log('scroll-view 下拉刷新触发');
	isRefreshing.value = true;
	await refreshData();
	isRefreshing.value = false;
};

// scroll-view 滚动到底部
const onScrollToLower = () => {
	console.log('=== onScrollToLower 触发 ===');
	console.log('当前状态:', {
		loadMoreStatus: loadMoreStatus.value,
		isRefreshing: isRefreshing.value,
		currentPage: currentPage.value,
		listLength: guidelinesList.value.length,
		hasMoreData: hasMoreData.value,
		isLoading: isLoading.value
	});

	if (loadMoreStatus.value === 'more' && !isRefreshing.value && !isLoading.value) {
		console.log('条件满足，开始加载更多数据');
		loadMoreData();
	} else {
		console.log('条件不满足，跳过加载:', {
			loadMoreStatus: loadMoreStatus.value,
			isRefreshing: isRefreshing.value,
			isLoading: isLoading.value
		});
	}
};

// 刷新数据
const refreshData = async () => {
	try {
		currentPage.value = 1
		hasMoreData.value = true
		loadMoreStatus.value = 'more'
		
		await loadGuidelinesList(true)
		
		uni.showToast({
			title: '刷新成功',
			icon: 'success'
		})
	} catch (error) {
		console.error('刷新失败:', error)
		uni.showToast({
			title: '刷新失败',
			icon: 'none'
		})
	}
}

// 加载指南列表
const loadGuidelinesList = async (isRefresh = false) => {
	console.log('=== loadGuidelinesList 开始 ===');
	console.log('当前参数:', { isRefresh, page: currentPage.value, keywords: keywords.value });

	if (isLoading.value) return
	
	try {
		isLoading.value = true
		loadMoreStatus.value = 'loading'
		
		const params = {
			page: currentPage.value,
			pageSize: pageSize.value,
			type: 1, // 诊疗指南类型
			sort:2,
			keywords:keywords.value
		}
		
		const res = await api.searchLibraryU(params)
		console.log('指南列表响应:', res)
		
		if (res.code === 200 && res.data) {
			const newData = res.data.list || res.data
			
			if (isRefresh) {
				guidelinesList.value = newData
				console.log('刷新模式：替换列表数据');
			} else {
				guidelinesList.value = [...guidelinesList.value, ...newData]
				console.log('加载更多：追加数据到列表');
			}
			
			// 判断是否还有更多数据
			if (newData.length < pageSize.value) {
				loadMoreStatus.value = 'noMore'
				hasMoreData.value = false
				console.log('没有更多数据了');
			} else {
				loadMoreStatus.value = 'more'
				hasMoreData.value = true
				// 只有在加载更多模式下才递增页码
				if (!isRefresh) {
					currentPage.value++
					console.log(`还有更多数据，下一页: ${currentPage.value}`);
				}
			}
		} else {
			console.error('加载指南列表失败:', res.message)
			loadMoreStatus.value = 'noMore'
			uni.showToast({
				title: res.message || '加载失败',
				icon: 'none'
			})
		}
	} catch (error) {
		console.error('加载指南列表异常:', error)
		loadMoreStatus.value = 'noMore'
		uni.showToast({
			title: '网络异常，请重试',
			icon: 'none'
		})
	} finally {
		isLoading.value = false
		console.log('=== loadGuidelinesList 结束 ===');
		console.log('最终状态:', {
			loadMoreStatus: loadMoreStatus.value,
			page: currentPage.value,
			listLength: guidelinesList.value.length
		});
	}
}

// 加载更多数据
const loadMoreData = () => {
	console.log('=== loadMoreData 被调用 ===');
	console.log('检查条件:', {
		hasMoreData: hasMoreData.value,
		isLoading: isLoading.value,
		currentPage: currentPage.value
	});
	
	if (hasMoreData.value && !isLoading.value) {
		console.log('条件满足，开始加载更多数据');
		loadGuidelinesList(false);
	} else {
		console.log('条件不满足，跳过加载更多');
	}
}

// 下载指南
const downloadGuideline = (item) => {
	console.log('下载指南:', item)
	uni.showToast({
		title: '开始下载...',
		icon: 'none'
	})
	
	// 这里可以调用下载API
	// 示例：下载PDF文件
	if (item.file_path) {
		uni.downloadFile({
			url: item.file_path,
			success: (res) => {
				if (res.statusCode === 200) {
					uni.showToast({
						title: '下载成功',
						icon: 'success'
					})
				}
			},
			fail: (err) => {
				console.error('下载失败:', err)
				uni.showToast({
					title: '下载失败',
					icon: 'none'
				})
			}
		})
	}
}

// 查看指南
const viewGuideline = (item) => {
	console.log('查看指南:', item)
	// 跳转到指南详情页或预览页
	uni.navigateTo({
		url: `/pages_app/zhinanDetail/zhinanDetail?uuid=${item.uuid}&title=${encodeURIComponent(item.title)}`
	})
}

// 返回上一页
const goBack = () => {
	uni.navigateBack()
}

// 测试加载更多功能
const testLoadMore = () => {
	console.log('=== 手动测试加载更多 ===');
	console.log('当前状态:', {
		loadMoreStatus: loadMoreStatus.value,
		hasMoreData: hasMoreData.value,
		isLoading: isLoading.value,
		currentPage: currentPage.value,
		listLength: guidelinesList.value.length
	});
	
	if (loadMoreStatus.value === 'more' && !isLoading.value) {
		loadMoreData();
	} else {
		uni.showToast({
			title: `状态: ${loadMoreStatus.value}, 加载中: ${isLoading.value}`,
			icon: 'none',
			duration: 2000
		});
	}
}

// 格式化日期
const formatDate = (dateString) => {
	if (!dateString) return ''
	
	try {
		const date = new Date(dateString)
		const year = date.getFullYear()
		const month = String(date.getMonth() + 1).padStart(2, '0')
		const day = String(date.getDate()).padStart(2, '0')
		return `${year}-${month}-${day}`
	} catch (error) {
		return dateString
	}
}
</script>

<style lang="scss" scoped>
// 颜色变量
$primary-color: #ff4757;
$text-primary: #333;
$text-secondary: #666;
$text-light: #999;
$border-color: #e0e0e0;
$bg-color: #f6f6f6;
$white: #ffffff;

.zhinan-list-page {
	background-color: $bg-color;
	height: 100vh;
}

.guidelines-scroll-view {
	height: calc(100vh - 140rpx);
	background-color: $bg-color;
}

// 指南列表
.guidelines-list {
	padding: 20rpx 30rpx;
	
	.guideline-item {
		background-color: $white;
		border-radius: 16rpx;
		padding: 30rpx;
		margin-bottom: 20rpx;
		display: flex;
		align-items: center;
		justify-content: space-between;
		box-shadow: 0 2rpx 8rpx rgba(0, 0, 0, 0.06);
		
		.item-content {
			flex: 1;
			margin-right: 30rpx;
			
			.item-title {
				font-size: 32rpx;
				color: $text-primary;
				line-height: 1.5;
				margin-bottom: 16rpx;
				font-weight: 500;
				display: -webkit-box;
				-webkit-box-orient: vertical;
				-webkit-line-clamp: 2;
				overflow: hidden;
				text-overflow: ellipsis;
			}
			
			.item-bottom {
				display: flex;
				justify-content: space-between;
				align-items: center;
				margin-top: 10rpx;
				
				.item-date {
					font-size: 26rpx;
					color: $text-secondary;
				}
				
				.item-action {
					display: flex;
					align-items: center;
					
					.download-btn {
						width: 60rpx;
						height: 60rpx;
						display: flex;
						align-items: center;
						justify-content: center;
						border-radius: 50%;
						background-color: rgba(255, 71, 87, 0.1);
						transition: all 0.3s ease;
						
						&:active {
							transform: scale(0.95);
							background-color: rgba(255, 71, 87, 0.2);
						}
					}
					
					.view-btn {
						color:#8B2316;
						font-size: 28rpx;
						font-weight: 500;
						transition: all 0.3s ease;
						
						&:active {
							transform: scale(0.95);
							background-color: darken($primary-color, 10%);
						}
					}
				}
			}
		}
	}
}

// 加载更多状态
.load-more-status {
	padding: 20rpx 0;
	text-align: center;
	
	.loading, .more, .no-more {
		display: flex;
		align-items: center;
		justify-content: center;
		gap: 10rpx;
		padding: 20rpx 0;
		font-size: 26rpx;
		color: $text-light;
	}
}

// 无数据提示
.no-data {
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	padding: 120rpx 0;
	
	text {
		margin-top: 30rpx;
		font-size: 28rpx;
		color: $text-light;
	}
}
</style>
