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* RankingScreen - 猫粮排行榜页面（重构版）
*
* 企业级最佳实践：
* - 组件化：拆分成多个小组件，职责单一
* - 性能优化：useMemo、useCallback、React.memo、懒加载
* - 状态管理：Zustand store + 选择器模式
* - 用户体验：下拉刷新、无限滚动、空状态
* - 代码质量：TypeScript、清晰的注释
* - 可维护性：小文件、易于理解和修改
*/
import React from 'react';
import { FlatList, RefreshControl, View } from 'react-native';
import { useSafeAreaInsets } from 'react-native-safe-area-context';
import { useRouter } from 'expo-router';
import { YStack } from 'tamagui';
import { AppHeader } from '@/src/components/AppHeader';
import { CatFoodCard } from '@/src/components/CatFoodCard';
import { Skeleton } from '@/src/components/lazy';
import type { CatFood } from '@/src/types/catFood';
import { useLazyLoad } from '@/src/hooks';
import {
EmptyState,
ImagePreviewModal,
ListFooter,
SearchFilterSection,
TopRankingSwiper,
} from '../components';
import { useImagePreview, useRankingData, useRankingFilter } from '../hooks';
export function RankingScreen() {
const insets = useSafeAreaInsets();
const router = useRouter();
// 懒加载控制
const { isReady: isSwiperReady } = useLazyLoad({ delay: 150, waitForInteraction: true });
// 使用自定义 hooks
const { catfoods, isLoading, isRefreshing, isLoadingMore, handleRefresh, handleLoadMore } =
useRankingData();
const {
sortBy,
setSortBy,
selectedBrand,
brandMenuExpanded,
searchQuery,
brandList,
brandCounts,
filteredCatFoods,
topCatFoods,
listCatFoods,
handleSearchChange,
handleClearSearch,
handleSelectBrand,
toggleBrandMenu,
resetFilters,
} = useRankingFilter(catfoods);
const { previewVisible, previewImageUrl, handleImagePress, closePreview } = useImagePreview();
// 跳转到详情页
const handleCatFoodPress = (catfood: CatFood) => {
router.push({
pathname: '/detail',
params: { id: catfood.id },
});
};
// 渲染猫粮卡片
const renderCatFoodCard = ({ item, index }: { item: CatFood; index: number }) => {
// 如果有轮播图（前5名），列表从第6名开始显示
const displayIndex = topCatFoods.length > 0 ? index + 5 : index;
return (
<View testID="catfood-item">
<CatFoodCard
catfood={item}
index={displayIndex}
onPress={handleCatFoodPress}
onImagePress={handleImagePress}
/>
</View>
);
};
// 渲染列表头部
const renderHeader = () => {
return (
<>
{/* 热门推荐轮播图 - 懒加载 */}
{topCatFoods.length > 0 &&
(isSwiperReady ? (
<TopRankingSwiper data={topCatFoods} topCount={5} onPress={handleCatFoodPress} />
) : (
<YStack height={200} margin="$3" borderRadius="$4" overflow="hidden">
<Skeleton width="100%" height={200} borderRadius={12} />
</YStack>
))}
{/* 搜索框和筛选区域 */}
<SearchFilterSection
searchQuery={searchQuery}
onSearch={handleSearchChange}
onClearSearch={handleClearSearch}
sortBy={sortBy}
onSortChange={setSortBy}
selectedBrand={selectedBrand}
brandList={brandList}
brandCounts={brandCounts}
brandMenuExpanded={brandMenuExpanded}
onSelectBrand={handleSelectBrand}
onToggleBrandMenu={toggleBrandMenu}
onResetFilters={resetFilters}
filteredCount={filteredCatFoods.length}
totalCount={catfoods.length}
/>
</>
);
};
// 渲染空状态
const renderEmpty = () => {
if (isLoading) return null;
// 搜索结果为空
if (searchQuery.trim()) {
return <EmptyState type="search" searchQuery={searchQuery} onReset={resetFilters} />;
}
// 列表为空但有轮播图
if (topCatFoods.length > 0 && listCatFoods.length === 0) {
return <EmptyState type="complete" />;
}
// 原始空状态
return <EmptyState type="default" onRefresh={handleRefresh} />;
};
return (
<YStack testID="ranking-screen" flex={1} backgroundColor="$background">
{/* Header */}
<AppHeader title="猫粮排行榜" insets={insets} />
{/* 图片预览模态框 */}
<ImagePreviewModal
visible={previewVisible}
imageUrl={previewImageUrl}
onClose={closePreview}
/>
{/* 猫粮列表 */}
<FlatList
testID="catfood-list"
data={listCatFoods}
renderItem={renderCatFoodCard}
keyExtractor={(item) => item.id.toString()}
ListHeaderComponent={renderHeader}
contentContainerStyle={{ paddingBottom: Math.max(10, insets.bottom) }}
refreshControl={
<RefreshControl
testID="refresh-indicator"
refreshing={isRefreshing}
onRefresh={handleRefresh}
/>
}
onEndReached={searchQuery.trim() ? undefined : handleLoadMore}
onEndReachedThreshold={0.5}
ListFooterComponent={
searchQuery.trim() ? null : <ListFooter isLoadingMore={isLoadingMore} />
}
ListEmptyComponent={renderEmpty}
/>
</YStack>
);
}
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