322 lines
9.7 KiB
TypeScript
322 lines
9.7 KiB
TypeScript
import React, { useState, useRef, useEffect, useCallback, memo } from 'react'
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import {
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View,
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Text,
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StyleSheet,
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Dimensions,
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FlatList,
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Pressable,
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StatusBar as RNStatusBar,
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ActivityIndicator,
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RefreshControl,
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Platform,
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} from 'react-native'
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import { StatusBar } from 'expo-status-bar'
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import { SafeAreaView } from 'react-native-safe-area-context'
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import { Image, ImageLoadEventData } from 'expo-image'
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import { useTranslation } from 'react-i18next'
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import { SameStyleIcon, WhiteStarIcon } from '@/components/icon'
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import { useRouter } from 'expo-router'
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import { useTemplates, type TemplateDetail } from '@/hooks'
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const { width: screenWidth, height: screenHeight } = Dimensions.get('window')
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const TAB_BAR_HEIGHT = 83
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// 检查 URL 是否为视频格式
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const isVideoUrl = (url: string): boolean => {
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const videoExtensions = ['.mp4', '.webm', '.mov', '.avi', '.mkv', '.m3u8']
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return videoExtensions.some(ext => url.toLowerCase().endsWith(ext))
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}
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// 统一的布局组件
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const Layout = ({ children }: { children: React.ReactNode }) => (
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<SafeAreaView style={styles.container} edges={[]}>
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<StatusBar style="light" />
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<RNStatusBar barStyle="light-content" />
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{children}
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</SafeAreaView>
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)
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const LoadingState = () => (
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<Layout>
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<View style={styles.centerContainer}>
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<ActivityIndicator size="large" color="#FFE500" />
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<Text style={styles.messageText}>加载中...</Text>
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</View>
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</Layout>
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)
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const ErrorState = () => (
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<Layout>
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<View style={styles.centerContainer}>
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<Text style={styles.messageText}>加载失败，请下拉刷新重试</Text>
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</View>
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</Layout>
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)
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const EmptyState = () => (
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<Layout>
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<View style={styles.centerContainer}>
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<Text style={styles.messageText}>暂无视频模板</Text>
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</View>
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</Layout>
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)
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const FooterLoading = () => (
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<View style={styles.footerLoading}>
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<ActivityIndicator size="small" color="#FFE500" />
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</View>
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)
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// 计算图片显示尺寸
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const calculateImageSize = (
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imageSize: { width: number; height: number } | null,
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videoHeight: number
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) => {
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if (!imageSize) return { width: screenWidth, height: videoHeight }
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const imageAspectRatio = imageSize.width / imageSize.height
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const screenAspectRatio = screenWidth / videoHeight
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return imageAspectRatio > screenAspectRatio
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? { width: screenWidth, height: screenWidth / imageAspectRatio }
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: { width: videoHeight * imageAspectRatio, height: videoHeight }
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}
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export const VideoItem = memo(({ item, videoHeight }: { item: TemplateDetail; videoHeight: number }) => {
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const { t } = useTranslation()
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const router = useRouter()
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const [imageSize, setImageSize] = useState<{ width: number; height: number } | null>(null)
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const handleImageLoad = useCallback((event: ImageLoadEventData) => {
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const { source } = event
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if (source?.width && source?.height) {
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setImageSize({ width: source.width, height: source.height })
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}
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}, [])
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const handlePress = useCallback(() => {
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router.push({
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pathname: '/generateVideo' as any,
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params: { templateId: item.id },
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})
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}, [router, item.id])
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const imageStyle = calculateImageSize(imageSize, videoHeight)
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// 优先使用 WebP 格式（支持动画），回退到普通预览图
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const displayUrl = item.webpHighPreviewUrl || item.webpPreviewUrl || item.previewUrl
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return (
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<View style={[styles.videoContainer, { height: videoHeight }]}>
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<View style={styles.videoWrapper}>
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{displayUrl && (
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<Image
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source={{ uri: displayUrl }}
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style={imageStyle}
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contentFit="contain"
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onLoad={handleImageLoad}
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/>
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)}
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<View style={styles.thumbnailContainer}>
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<Image source={{ uri: item.coverImageUrl }} style={styles.thumbnail} contentFit="cover" />
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</View>
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</View>
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<Pressable style={styles.actionButtonLeft}>
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<WhiteStarIcon />
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<Text style={styles.actionButtonTextTitle}>{item.title}</Text>
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</Pressable>
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<Pressable style={styles.actionButtonRight} onPress={handlePress}>
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<SameStyleIcon />
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<Text style={styles.actionButtonText}>{t('video.makeSame')}</Text>
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</Pressable>
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</View>
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)
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})
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export default function VideoScreen() {
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const flatListRef = useRef<FlatList>(null)
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const videoHeight = screenHeight - TAB_BAR_HEIGHT
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const PAGE_SIZE = 10 // 每页10个数据
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const { templates, loading, error, execute, refetch, loadMore, hasMore } = useTemplates({
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sortBy: 'likeCount',
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sortOrder: 'desc',
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page: 1,
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limit: PAGE_SIZE,
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})
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const [refreshing, setRefreshing] = useState(false)
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useEffect(() => {
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execute()
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}, [execute])
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const handleRefresh = useCallback(async () => {
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setRefreshing(true)
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await refetch()
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setRefreshing(false)
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}, [refetch])
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const handleLoadMore = useCallback(() => {
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console.log('onEndReached triggered', { hasMore, loading, templatesLength: templates.length })
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if (!hasMore || loading) {
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console.log('LoadMore blocked', { hasMore, loading })
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return
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}
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console.log('Loading more...')
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loadMore()
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}, [hasMore, loading, loadMore, templates.length])
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const renderItem = useCallback(({ item }: { item: TemplateDetail }) => (
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<VideoItem item={item} videoHeight={videoHeight} />
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), [videoHeight])
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const keyExtractor = useCallback((item: TemplateDetail) => item.id, [])
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const getItemLayout = useCallback((_: any, index: number) => ({
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length: videoHeight,
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offset: videoHeight * index,
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index,
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}), [videoHeight])
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// 过滤掉没有可用预览的 item
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const filteredTemplates = templates.filter((item: TemplateDetail) => {
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// 优先使用 WebP 格式（支持动画），回退到普通预览图
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const displayUrl = item.webpHighPreviewUrl || item.webpPreviewUrl || item.previewUrl
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// 只检查最终要显示的 URL 是否为视频格式
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const isDisplayVideo = displayUrl && isVideoUrl(displayUrl)
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// 有显示URL且不是视频格式才保留
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const shouldKeep = !!displayUrl && !isDisplayVideo
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console.log(`Filtering ${item.title}:`, {
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displayUrl,
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isDisplayVideo,
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shouldKeep,
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})
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return shouldKeep
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})
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console.log('Video page state:', {
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templatesLength: templates.length,
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filteredTemplatesLength: filteredTemplates.length,
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loading,
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error,
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hasMore,
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})
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if (loading && templates.length === 0) return <LoadingState />
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if (error && templates.length === 0) return <ErrorState />
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if (!loading && filteredTemplates.length === 0) return <EmptyState />
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return (
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<Layout>
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<FlatList
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ref={flatListRef}
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data={filteredTemplates}
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renderItem={renderItem}
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keyExtractor={keyExtractor}
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getItemLayout={getItemLayout}
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pagingEnabled
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showsVerticalScrollIndicator={false}
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snapToInterval={videoHeight}
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snapToAlignment="start"
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decelerationRate="fast"
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refreshControl={
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<RefreshControl
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refreshing={refreshing}
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onRefresh={handleRefresh}
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tintColor="#FFE500"
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colors={['#FFE500']}
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/>
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}
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onEndReached={handleLoadMore}
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onEndReachedThreshold={0.1}
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ListFooterComponent={loading ? <FooterLoading /> : null}
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maxToRenderPerBatch={5}
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windowSize={7}
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initialNumToRender={3}
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/>
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</Layout>
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)
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}
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const styles = StyleSheet.create({
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container: {
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flex: 1,
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backgroundColor: '#090A0B',
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},
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centerContainer: {
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flex: 1,
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alignItems: 'center',
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justifyContent: 'center',
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gap: 12,
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},
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messageText: {
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color: '#FFFFFF',
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fontSize: 14,
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textAlign: 'center',
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},
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footerLoading: {
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paddingVertical: 20,
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alignItems: 'center',
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},
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videoContainer: {
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width: screenWidth,
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position: 'relative',
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},
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videoWrapper: {
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flex: 1,
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position: 'relative',
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alignItems: 'center',
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justifyContent: 'center',
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},
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thumbnailContainer: {
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position: 'absolute',
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left: 12,
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bottom: 80,
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width: 56,
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height: 56,
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borderRadius: 8,
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overflow: 'hidden',
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borderWidth: 2,
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borderColor: '#FFFFFF',
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},
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thumbnail: {
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width: '100%',
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height: '100%',
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},
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actionButtonLeft: {
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position: 'absolute',
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left: 12,
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bottom: 16,
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flexDirection: 'row',
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alignItems: 'center',
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gap: 4,
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paddingHorizontal: 6,
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paddingVertical: 8,
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backgroundColor: '#191B1F',
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borderRadius: 8,
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borderWidth: 1,
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borderColor: '#2F3134',
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},
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actionButtonRight: {
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position: 'absolute',
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right: 13,
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bottom: 13,
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flexDirection: 'column',
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alignItems: 'center',
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},
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actionButtonTextTitle: {
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color: '#F5F5F5',
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fontSize: 11,
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},
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actionButtonText: {
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color: '#CCCCCC',
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fontSize: 10,
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fontWeight: '500',
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},
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})
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