<template>
	<view class="container">
		<view class="filter-tabs">
			<view 
				v-for="(item, index) in filterOptions" 
				:key="index"
				class="tab-item"
				:class="{ active: filterIndex === index }"
				@tap="onFilterChange(index)"
			>
				{{ item.label }}
				<view v-if="filterIndex === index" class="tab-line"></view>
			</view>
		</view>

		<view v-if="orderList.length === 0 && !loading" class="empty-state">
			<view class="empty-icon">📋</view>
			<view class="empty-title">暂无订单</view>
			<view class="empty-desc">当前账号下暂无订单信息</view>
		</view>

		<scroll-view v-else scroll-y class="order-scroll" @scrolltolower="loadMore">
			<view class="order-card" v-for="(item, index) in orderList" :key="index">
				<view class="card-header">
					<view class="header-left">
						<view class="header-row">
							<text class="field-tag">订单号</text>
							<text class="order-no">{{ item.order_no }}</text>
						</view>
						<view class="header-row" v-if="item.order_id">
							<text class="field-tag">订单ID</text>
							<text class="order-id">{{ item.order_id }}</text>
						</view>
					</view>
					<view class="status-badge" :class="getStatusClass(item.payment_status)">
						{{ item.payment_status_name }}
					</view>
				</view>

				<view class="card-body">
					<view class="info-grid">
						<view class="info-item">
							<view class="info-label">订单时间</view>
							<view class="info-value">{{ item.created_at }}</view>
						</view>
						<view class="info-item">
							<view class="info-label">订单金额</view>
							<view class="info-value amount">¥{{ formatMoney(item.total_amount) }}</view>
						</view>
					</view>
					
					<view class="divider"></view>
					
					<view class="package-section">
						<view class="section-label">套餐信息</view>
						<view class="package-list">
							<view class="package-item" v-for="(pkgName, pIndex) in item.package_names" :key="pIndex">
								<text class="field-tag">套餐名称</text>
								<text class="package-name">{{ pkgName }}</text>
							</view>
						</view>
					</view>
				</view>
			</view>

			<view class="load-more" v-if="orderList.length > 0">
				<text v-if="loading">加载中...</text>
				<text v-else-if="noMore">没有更多了</text>
				<text v-else>上拉加载更多</text>
			</view>
		</scroll-view>
	</view>
</template>

<script setup>
	import { ref, reactive, onMounted } from 'vue';
	import { orderApi } from '@/api/index.js';
	import { useUserStore } from '@/store/index.js';

	const userStore = useUserStore();

	let orderList = reactive([]);
	let loading = ref(false);
	let noMore = ref(false);
	let page = ref(1);
	const pageSize = 10;
	let filterIndex = ref(0);
	let filterOptions = [
		{ label: '全部', value: null },
		{ label: '待支付', value: 1 },
		{ label: '已支付', value: 2 },
		{ label: '已取消', value: 3 },
		{ label: '已退款', value: 4 }
	];

	const formatMoney = (amount) => {
		if (!amount && amount !== 0) return '0.00';
		return (amount / 100).toFixed(2).replace(/\B(?=(\d{3})+(?!\d))/g, ',');
	};

	const getStatusClass = (status) => {
		const classMap = {
			1: 'tag-warning',
			2: 'tag-success',
			3: 'tag-secondary',
			4: 'tag-info'
		};
		return classMap[status] || '';
	};

	const onFilterChange = (index) => {
		filterIndex.value = index;
		page.value = 1;
		noMore.value = false;
		loadOrderList();
	};

	const loadOrderList = async (append = false) => {
		if (loading.value || noMore.value) return;
		loading.value = true;

		const paymentStatus = filterOptions[filterIndex.value].value;

		try {
			const data = await orderApi.getList(
				userStore.state.identifier,
				page.value,
				pageSize,
				paymentStatus
			);

			const newData = (data.items || []).map(item => ({
				...item,
				payment_status_name: item.payment_status === 1 ? '待支付' : item.payment_status === 2 ? '已支付' : item.payment_status === 3 ? '已取消' : item.payment_status === 4 ? '已退款' : '未知',
				created_at: item.created_at ? item.created_at.split('T').join(' ').slice(0, 19) : ''
			}));

			if (append) {
				orderList.push(...newData);
			} else {
				orderList.splice(0, orderList.length, ...newData);
			}

			if (newData.length < pageSize) {
				noMore.value = true;
			} else {
				page.value++;
			}
		} catch (e) {
			console.error('加载订单列表失败', e);
		}
		loading.value = false;
	};

	const loadMore = () => {
		if (!noMore.value) {
			loadOrderList(true);
		}
	};

	onMounted(() => {
		loadOrderList();
	});
</script>

<style lang="scss" scoped>
	.container {
		height: 100vh;
		display: flex;
		flex-direction: column;
		background: #f5f6f7;
	}

	.filter-tabs {
		display: flex;
		background: #fff;
		position: sticky;
		top: 0;
		border-radius: 10rpx;
		z-index: 10;
		.tab-item {
			position: relative;
			flex: 1;
			text-align: center;
			font-size: 28rpx;
			color: #999;
			padding: 28rpx 0;
			transition: all 0.2s;
			&.active {
				color: #333;
				font-weight: 600;
				font-size: 30rpx;
			}
			.tab-line {
				position: absolute;
				bottom: 0;
				left: 50%;
				transform: translateX(-50%);
				width: 48rpx;
				height: 6rpx;
				background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
				border-radius: 3rpx;
			}
		}
	}

	.order-scroll {
		flex: 1;
	}

	.empty-state {
		display: flex;
		flex-direction: column;
		align-items: center;
		justify-content: center;
		padding: 200rpx 40rpx;
		.empty-icon { font-size: 120rpx; margin-bottom: 30rpx; opacity: 0.6; }
		.empty-title { font-size: 32rpx; font-weight: 600; color: #333; margin-bottom: 16rpx; }
		.empty-desc { font-size: 26rpx; color: #999; text-align: center; }
	}

	.order-card {
		background: #fff;
		border-radius: 20rpx;
		margin-bottom: 24rpx;
		overflow: hidden;
		box-shadow: 0 4rpx 20rpx rgba(0, 0, 0, 0.04);

		.card-header {
			display: flex;
			justify-content: space-between;
			align-items: flex-start;
			padding: 28rpx 28rpx 24rpx;
			border-bottom: 1rpx solid #f0f0f0;
			
			.header-left {
				display: flex;
				flex-direction: column;
				gap: 10rpx;
			}
			
			.header-row {
				display: flex;
				align-items: center;
				gap: 12rpx;
			}
			
			.field-tag {
				font-size: 20rpx;
				color: #999;
				background: #f5f6f7;
				padding: 2rpx 10rpx;
				border-radius: 4rpx;
			}
			
			.order-no {
				font-size: 26rpx;
				font-weight: 600;
				color: #333;
				font-family: monospace;
			}
			
			.order-id {
				font-size: 24rpx;
				color: #666;
				font-family: monospace;
			}
		}

		.card-body {
			padding: 24rpx 28rpx;
			
			.info-grid {
				display: grid;
				grid-template-columns: 1fr 1fr;
				gap: 20rpx;
				
				.info-item {
					.info-label {
						font-size: 22rpx;
						color: #999;
						margin-bottom: 8rpx;
					}
					.info-value {
						font-size: 26rpx;
						color: #333;
						&.amount {
							color: #ff6b6b;
							font-weight: 700;
							font-size: 30rpx;
						}
					}
				}
			}

			.divider {
				height: 1rpx;
				background: #f5f5f5;
				margin: 24rpx 0;
			}

			.package-section {
				.section-label {
					font-size: 22rpx;
					color: #999;
					margin-bottom: 16rpx;
				}
				
				.package-list {
					.package-item {
						display: flex;
						align-items: center;
						gap: 12rpx;
						padding: 8rpx 0;
						.package-name {
							font-size: 26rpx;
							color: #333;
						}
					}
				}
			}
		}
	}

	.status-badge {
		padding: 8rpx 20rpx;
		border-radius: 30rpx;
		font-size: 22rpx;
		font-weight: 500;
		
		&.tag-warning {
			background: #fff7e6;
			color: #fa8c16;
		}
		&.tag-success {
			background: #e6f7ff;
			color: #1890ff;
		}
		&.tag-secondary {
			background: #f5f5f5;
			color: #999;
		}
		&.tag-info {
			background: #f0f0f0;
			color: #666;
		}
	}

	.load-more {
		text-align: center;
		padding: 32rpx;
		color: #999;
		font-size: 24rpx;
	}
</style>