<template>
	<view class="page">
		<view class="tabs">
			<view class="tab" :class="{active: tab==='all'}" @click="switchTab('all')">全部</view>
			<view class="tab" :class="{active: tab==='category'}" @click="switchTab('category')">按类别</view>
		</view>

		<view class="search">
			<input v-model.trim="query.kw" placeholder="输入名称/条码/规格查询" @confirm="reload" />
			<picker mode="selector" :range="categoryNames" v-if="tab==='category'" @change="onPickCategory">
				<view class="picker">{{ categoryLabel }}</view>
			</picker>
			<button size="mini" @click="reload">查询</button>
		</view>

		<scroll-view scroll-y class="list" @scrolltolower="loadMore">
			<block v-if="items.length">
				<view class="item" v-for="it in items" :key="it.id" @click="openForm(it.id)">
					<image v-if="it.cover" :src="it.cover" class="thumb" mode="aspectFill" />
					<view class="content">
						<view class="name">{{ it.name }}</view>
						<view class="meta">{{ it.brand || '-' }} {{ it.model || '' }} {{ it.spec || '' }}</view>
						<view class="meta">库存：{{ it.stock ?? 0 }}
							<text class="price">零售价：¥{{ (it.retailPrice ?? it.price ?? 0).toFixed(2) }}</text>
						</view>
					</view>
				</view>
			</block>
			<view v-else class="empty">
				<text>暂无数据，点击右上角“＋”新增</text>
			</view>
		</scroll-view>

		<view class="fab" @click="openForm()">＋</view>
	</view>
</template>

<script>
import { get } from '../../common/http.js'

export default {
	data() {
		return {
			items: [],
			query: { kw: '', page: 1, size: 20, categoryId: '' },
			finished: false,
			loading: false,
			tab: 'all',
			categories: []
		}
	},
	onLoad() {
		this.fetchCategories()
		this.reload()
	},
	onShow() {
		// 从创建/编辑页返回时，确保刷新最新列表
		this.reload()
	},
	computed: {
		categoryNames() { return this.categories.map(c => c.name) },
		categoryLabel() {
			const c = this.categories.find(x => String(x.id) === String(this.query.categoryId))
			return c ? '类别：' + c.name : '选择类别'
		}
	},
	methods: {
		switchTab(t) {
			this.tab = t
			this.query.categoryId = ''
			this.reload()
		},
		onPickCategory(e) {
			const idx = Number(e.detail.value)
			const c = this.categories[idx]
			this.query.categoryId = c ? c.id : ''
			this.reload()
		},
		async fetchCategories() {
			try {
				const res = await get('/api/product-categories', {})
				this.categories = Array.isArray(res?.list) ? res.list : (Array.isArray(res) ? res : [])
			} catch (_) {}
		},
		reload() {
			this.items = []
			this.query.page = 1
			this.finished = false
			this.loadMore()
		},
		async loadMore() {
			if (this.loading || this.finished) return
			this.loading = true
			try {
				const params = { kw: this.query.kw, page: this.query.page, size: this.query.size }
				if (this.tab === 'category' && this.query.categoryId) params.categoryId = this.query.categoryId
				const res = await get('/api/products', params)
				const list = Array.isArray(res?.list) ? res.list : (Array.isArray(res) ? res : [])
				this.items = this.items.concat(list)
				if (list.length < this.query.size) this.finished = true
				this.query.page += 1
			} catch (e) {
				uni.showToast({ title: '加载失败', icon: 'none' })
			} finally {
				this.loading = false
			}
		},
		openForm(id) {
			const url = '/pages/product/form' + (id ? ('?id=' + id) : '')
			uni.navigateTo({ url })
		}
	}
}
</script>

<style>
.page { display:flex; flex-direction: column; height: 100vh; }
.tabs { display:flex; background:#fff; }
.tab { flex:1; text-align:center; padding: 20rpx 0; color:#666; }
.tab.active { color:#18b566; font-weight: 600; }
.search { display:flex; gap: 12rpx; padding: 16rpx; background:#fff; align-items: center; }
.search input { flex:1; background:#f6f6f6; border-radius: 12rpx; padding: 12rpx; }
.picker { padding: 8rpx 12rpx; background:#f0f0f0; border-radius: 10rpx; color:#666; }
.list { flex:1; }
.item { display:flex; padding: 20rpx; background:#fff; border-bottom: 1rpx solid #f1f1f1; }
.thumb { width: 120rpx; height: 120rpx; border-radius: 12rpx; margin-right: 16rpx; background:#fafafa; }
.content { flex:1; }
.name { color:#333; margin-bottom: 6rpx; font-weight: 600; }
.meta { color:#888; font-size: 24rpx; }
.price { margin-left: 20rpx; color:#f60; }
.empty { height: 60vh; display:flex; align-items:center; justify-content:center; color:#999; }
.fab { position: fixed; right: 30rpx; bottom: 120rpx; width: 100rpx; height: 100rpx; background:#18b566; color:#fff; border-radius: 50rpx; text-align:center; line-height: 100rpx; font-size: 48rpx; box-shadow: 0 8rpx 20rpx rgba(0,0,0,0.15); }
</style>







