296 lines
11 KiB
TypeScript
296 lines
11 KiB
TypeScript
import { useCallback, useMemo, useState } from 'react'
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import Taro, { useDidShow } from '@tarojs/taro'
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import { View, Text, Image } from '@tarojs/components'
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import { Grid, GridItem, Icon, Search, Swiper, SwiperItem } from '@antmjs/vantui'
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import useAuthStore from '@/stores/auth/useAuthStore'
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import useCartStore from '@/stores/cart/useCartStore'
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import { getHomeConfigApi } from '@/services/home'
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import type { HomeConfig } from '@/services/home'
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import { getProductListApi } from '@/services/product'
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import { getProductCover } from '@/types/product'
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import type { Product, ProductCartPatch } from '@/types/product'
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import PriceText from '@/components/PriceText'
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import CartBall from '@/components/CartBall'
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import CartStepper from '@/components/CartStepper'
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import { formatSpec } from '@/utils/format'
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import './index.less'
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/** 首页 → 商品页的本地存储传参 key（switchTab 无法带参） */
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const PENDING_CATEGORY_KEY = 'product_category_id'
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const PENDING_KEYWORD_KEY = 'product_keyword'
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/** tabBar 页面路径（link 跳转需改用 switchTab） */
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const TAB_PATHS = [
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'pages/index/index',
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'pages/product/index',
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'pages/cart/index',
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'pages/message/index',
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'pages/profile/index',
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]
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/** 宫格导航无图时的兜底色块配色（生鲜红橙系） */
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const NAV_COLORS = ['#ee0a24', '#ff7a1a', '#07c160', '#1989fa', '#8a5cf6', '#ff976a', '#00b8d9', '#f56c6c']
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/** 获取状态栏高度（H5 端为 0） */
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function getStatusBarHeight(): number {
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try {
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const info = typeof Taro.getWindowInfo === 'function' ? Taro.getWindowInfo() : Taro.getSystemInfoSync()
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return info.statusBarHeight || 0
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} catch {
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return 0
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}
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}
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export default function IndexPage() {
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const addItem = useCartStore(s => s.addItem)
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const setSummary = useCartStore(s => s.setSummary)
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/** 首页配置（轮播图 / 宫格导航 / 促销卡片） */
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const [config, setConfig] = useState<HomeConfig>({ banners: [], navs: [], promos: [] })
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/** 推荐商品 */
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const [products, setProducts] = useState<Product[]>([])
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/** 搜索框输入 */
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const [keyword, setKeyword] = useState('')
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const statusBarHeight = useMemo(() => getStatusBarHeight(), [])
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useDidShow(() => {
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loadHomeConfig()
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loadRecommend()
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})
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/** 首页配置聚合数据（响应附带悬浮球汇总） */
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const loadHomeConfig = useCallback(async () => {
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try {
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const res = await getHomeConfigApi()
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setConfig(res.data)
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// 旧版本后端可能未返回 cart 块
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if (res.data.cart) setSummary(res.data.cart)
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} catch {
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// 错误已由 request 层 toast
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}
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}, [setSummary])
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/** 推荐商品 */
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const loadRecommend = useCallback(async () => {
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try {
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const res = await getProductListApi({ page: 1, pageSize: 10 })
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setProducts(res.data.data)
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} catch {
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// 错误已由 request 层 toast
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}
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}, [])
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/**
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* 后台配置的 link 统一跳转：
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* - 空字符串不跳转
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* - tabBar 页面用 switchTab，其余用 navigateTo
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*/
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const handleLink = useCallback((link: string) => {
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if (!link) return
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const path = link.split('?')[0].replace(/^\//, '')
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if (TAB_PATHS.includes(path)) {
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Taro.switchTab({ url: `/${path}` })
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} else {
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Taro.navigateTo({ url: link })
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}
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}, [])
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/** 跳转商品页并带上关键词 */
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const goProduct = useCallback((kw?: string) => {
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try {
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if (kw !== undefined) Taro.setStorageSync(PENDING_KEYWORD_KEY, kw)
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Taro.removeStorageSync(PENDING_CATEGORY_KEY)
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} catch {
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// noop
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}
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Taro.switchTab({ url: '/pages/product/index' })
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}, [])
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/** 跳转商品详情 */
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const goDetail = useCallback((id: number) => {
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Taro.navigateTo({ url: `/pages/product-detail/index?id=${id}` })
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}, [])
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/** 搜索框聚焦/提交 → 商品页搜索 */
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const handleSearchFocus = useCallback(() => {
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goProduct(keyword.trim())
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}, [goProduct, keyword])
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/** 行内加减购确认后回写推荐商品项的购物车字段 */
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const handleRowSync = useCallback((productId: number, patch: ProductCartPatch) => {
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setProducts(prev => prev.map(p => (p.id === productId ? { ...p, ...patch } : p)))
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}, [])
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/** 快捷加购（用返回的购物车行回写，卡片随即展示加减器） */
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const handleQuickAdd = useCallback(
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async (product: Product, e: any) => {
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e.stopPropagation()
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try {
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const res = await addItem(product.id, 1)
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handleRowSync(product.id, { cart_id: res.id, cart_quantity: res.quantity })
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Taro.showToast({ title: '已加入购物车', icon: 'success' })
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} catch {
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// 错误（未设等级价等）已由 request 层 toast
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}
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},
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[addItem, handleRowSync],
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)
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return (
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<View className='home-page'>
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{/* ========== 自定义顶部导航栏 ========== */}
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<View className='home-header' style={{ paddingTop: `${statusBarHeight}px` }}>
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<View className='home-header__bar'>
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<View className='home-header__brand'>
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<Text className='home-header__title'>鲜采直供</Text>
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<Text className='home-header__slogan'>产地直采 · 新鲜直达</Text>
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</View>
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<View className='home-header__notice' onClick={() => Taro.switchTab({ url: '/pages/message/index' })}>
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<Icon name='bell' size='44rpx' color='#ffffff' />
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</View>
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</View>
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<View className='home-header__search'>
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<Search
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value={keyword}
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placeholder='搜索商品名称/规格'
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shape='round'
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background='transparent'
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onChange={e => setKeyword(String(e.detail))}
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onFocus={handleSearchFocus}
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onSearch={handleSearchFocus}
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/>
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</View>
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</View>
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{/* ========== 轮播图 ========== */}
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<View className='home-banner'>
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<Swiper
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className='home-banner__swiper'
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height='300rpx'
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autoPlay={3000}
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loop
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paginationVisible
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paginationColor='#ffffff'
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>
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{config.banners.length > 0 ? (
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config.banners.map(banner =>
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banner.image_url ? (
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<SwiperItem key={banner.id}>
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<Image
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className='home-banner__image'
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src={banner.image_url}
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mode='aspectFill'
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onClick={() => handleLink(banner.link)}
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/>
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</SwiperItem>
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) : null,
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)
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) : (
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<SwiperItem>
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<View className='home-banner__placeholder'>
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<Text className='home-banner__placeholder-title'>新鲜直采</Text>
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<Text className='home-banner__placeholder-sub'>每日凌晨采货 · 天亮前到店</Text>
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</View>
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</SwiperItem>
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)}
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</Swiper>
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</View>
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{/* ========== 宫格导航（一行四个） ========== */}
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{config.navs.length > 0 && (
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<View className='home-menu'>
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<Grid columnNum={4} border={false} iconSize={88}>
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{config.navs.map((nav, idx) => (
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<GridItem
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key={nav.id}
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text={nav.name}
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onClick={() => handleLink(nav.link)}
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renderIcon={
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nav.image_url ? (
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<Image className='menu-icon__image' src={nav.image_url} mode='aspectFit' />
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) : (
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<View className='menu-icon' style={{ background: NAV_COLORS[idx % NAV_COLORS.length] }}>
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<Text className='menu-icon__text'>{nav.name.slice(0, 1)}</Text>
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</View>
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)
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}
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/>
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))}
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</Grid>
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</View>
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)}
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{/* ========== 促销推荐卡片 ========== */}
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{config.promos.length > 0 && (
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<View className='home-promo'>
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{config.promos.map(promo => (
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<View key={promo.id} className='promo-card' onClick={() => handleLink(promo.link)}>
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{promo.image_url && (
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<Image className='promo-card__bg' src={promo.image_url} mode='aspectFill' lazyLoad />
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)}
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{promo.title && <View className='promo-card__mask' />}
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<View className='promo-card__content'>
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<Text className='promo-card__title'>{promo.title}</Text>
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{promo.sub_title && <Text className='promo-card__sub'>{promo.sub_title}</Text>}
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</View>
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</View>
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))}
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</View>
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)}
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{/* ========== 推荐商品 ========== */}
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<View className='home-recommend'>
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<View className='home-recommend__header'>
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<View className='home-recommend__title-wrap'>
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<View className='home-recommend__title-bar' />
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<Text className='home-recommend__title'>推荐商品</Text>
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</View>
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<Text className='home-recommend__more' onClick={() => goProduct()}>查看更多 ›</Text>
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</View>
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{ products.length === 0 ? (
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<View className='home-recommend__empty'>
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<Text className='home-recommend__empty-text'>暂无商品</Text>
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</View>
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) : (
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<View className='product-grid'>
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{products.map(product => (
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<View key={product.id} className='product-card' onClick={() => goDetail(product.id)}>
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<Image
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className='product-card__image'
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src={getProductCover(product) || 'https://img.yzcdn.cn/vant/cat.jpeg'}
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mode='aspectFill'
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lazyLoad
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/>
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<View className='product-card__info'>
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<Text className='product-card__name'>{product.name}</Text>
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<Text className='product-card__spec'>{formatSpec(product.spec, product.unit)}</Text>
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<View className='product-card__bottom'>
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{product.price !== null ? (
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<PriceText className='product-card__price' price={product.price} spec={product.spec} mode='block' />
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) : (
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<Text className='product-card__price product-card__price--none'>登陆后查看价格</Text>
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)}
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{/* 已加购展示行内加减器，否则展示快捷加购按钮 */}
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{Number(product.cart_quantity ?? 0) > 0 ? (
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<CartStepper product={product} onSync={handleRowSync} />
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) : (
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<View className='product-card__add' onClick={e => handleQuickAdd(product, e)}>
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<Text className='product-card__add-icon'>＋</Text>
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</View>
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)}
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</View>
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</View>
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</View>
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))}
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</View>
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)}
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</View>
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{/* ========== 购物车悬浮球 ========== */}
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<CartBall />
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</View>
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)
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}
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