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frontend/src/components/business/PostCard.tsx

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/**
* PostCard - QQ频道风格
*
*
*/
import React, { useState, useCallback, useMemo } from 'react';
import {
View,
TouchableOpacity,
StyleSheet,
Alert,
useWindowDimensions,
} from 'react-native';
import { MaterialCommunityIcons } from '@expo/vector-icons';
import { formatDistanceToNow } from 'date-fns';
import { zhCN } from 'date-fns/locale';
import { colors, spacing, fontSizes, borderRadius } from '../../theme';
import { Post } from '../../types';
import Text from '../common/Text';
import Avatar from '../common/Avatar';
import { ImageGrid, ImageGridItem, SmartImage } from '../common';
import VotePreview from './VotePreview';
import { useResponsive, useResponsiveValue } from '../../hooks/useResponsive';
interface PostCardProps {
post: Post;
onPress: () => void;
onUserPress: () => void;
onLike: () => void;
onComment: () => void;
onBookmark: () => void;
onShare: () => void;
onImagePress?: (images: ImageGridItem[], index: number) => void;
onDelete?: () => void;
compact?: boolean;
index?: number;
isAuthor?: boolean;
isPostAuthor?: boolean; // 当前用户是否为帖子作者
variant?: 'default' | 'grid';
}
const PostCard: React.FC<PostCardProps> = ({
post,
onPress,
onUserPress,
onLike,
onComment,
onBookmark,
onShare,
onImagePress,
onDelete,
compact = false,
index,
isAuthor = false,
isPostAuthor = false,
variant = 'default',
}) => {
const [isExpanded, setIsExpanded] = useState(false);
const [isDeleting, setIsDeleting] = useState(false);
// 使用响应式 hook
const {
width,
isMobile,
isTablet,
isDesktop,
isWideScreen,
isLandscape,
orientation
} = useResponsive();
const { width: windowWidth } = useWindowDimensions();
// 响应式字体大小
const responsiveFontSize = useResponsiveValue({
xs: fontSizes.md,
sm: fontSizes.md,
md: fontSizes.lg,
lg: isLandscape ? fontSizes.lg : fontSizes.xl,
xl: fontSizes.xl,
'2xl': fontSizes.xl,
'3xl': fontSizes['2xl'],
'4xl': fontSizes['2xl'],
});
// 响应式标题字体大小
const responsiveTitleFontSize = useResponsiveValue({
xs: fontSizes.lg,
sm: fontSizes.lg,
md: fontSizes.xl,
lg: isLandscape ? fontSizes.xl : fontSizes['2xl'],
xl: fontSizes['2xl'],
'2xl': fontSizes['2xl'],
'3xl': fontSizes['3xl'],
'4xl': fontSizes['3xl'],
});
// 响应式头像大小
const avatarSize = useResponsiveValue({
xs: 36,
sm: 38,
md: 40,
lg: 44,
xl: 48,
'2xl': 48,
'3xl': 52,
'4xl': 56,
});
// 响应式内边距 - 宽屏下增加更多内边距
const responsivePadding = useResponsiveValue({
xs: spacing.md,
sm: spacing.md,
md: spacing.lg,
lg: spacing.xl,
xl: spacing.xl * 1.2,
'2xl': spacing.xl * 1.5,
'3xl': spacing.xl * 2,
'4xl': spacing.xl * 2.5,
});
// 宽屏下额外的卡片内边距
const cardPadding = useMemo(() => {
if (isWideScreen) return spacing.xl;
if (isDesktop) return spacing.lg;
if (isTablet) return spacing.md;
return 0; // 移动端无额外内边距
}, [isWideScreen, isDesktop, isTablet]);
const formatTime = (dateString: string | undefined | null): string => {
if (!dateString) return '';
try {
return formatDistanceToNow(new Date(dateString), {
addSuffix: true,
locale: zhCN,
});
} catch {
return '';
}
};
const getTruncatedContent = (content: string | undefined | null, maxLength: number = 100): string => {
if (!content) return '';
if (content.length <= maxLength || isExpanded) return content;
return content.substring(0, maxLength) + '...';
};
// 宽屏下显示更多内容
const getResponsiveMaxLength = () => {
if (isWideScreen) return 300;
if (isDesktop) return 250;
if (isTablet) return 200;
return 100;
};
const formatNumber = (num: number): string => {
if (num >= 10000) {
return (num / 10000).toFixed(1) + 'w';
}
if (num >= 1000) {
return (num / 1000).toFixed(1) + 'k';
}
return num.toString();
};
// 处理删除帖子
const handleDelete = () => {
if (!onDelete || isDeleting) return;
Alert.alert(
'删除帖子',
'确定要删除这篇帖子吗?删除后将无法恢复。',
[
{
text: '取消',
style: 'cancel',
},
{
text: '删除',
style: 'destructive',
onPress: async () => {
setIsDeleting(true);
try {
await onDelete();
} catch (error) {
console.error('删除帖子失败:', error);
Alert.alert('删除失败', '删除帖子时发生错误,请稍后重试');
} finally {
setIsDeleting(false);
}
},
},
],
);
};
// 渲染图片 - 使用新的 ImageGrid 组件
const renderImages = () => {
if (!post.images || !Array.isArray(post.images) || post.images.length === 0) return null;
// 转换图片数据格式
const gridImages: ImageGridItem[] = post.images.map(img => ({
id: img.id,
url: img.url,
thumbnail_url: img.thumbnail_url,
width: img.width,
height: img.height,
}));
// 宽屏下显示更大的图片
const imageGap = isDesktop ? 12 : isTablet ? 8 : 4;
const imageBorderRadius = isDesktop ? borderRadius.xl : borderRadius.md;
return (
<View style={styles.imagesContainer}>
<ImageGrid
images={gridImages}
maxDisplayCount={isWideScreen ? 12 : 9}
mode="auto"
gap={imageGap}
borderRadius={imageBorderRadius}
showMoreOverlay={true}
onImagePress={onImagePress}
/>
</View>
);
};
const renderBadges = () => {
const badges = [];
if (isAuthor) {
badges.push(
<View key="author" style={[styles.badge, styles.authorBadge]}>
<Text variant="caption" style={styles.badgeText}></Text>
</View>
);
}
if (post.author?.id === '1') {
badges.push(
<View key="admin" style={[styles.badge, styles.adminBadge]}>
<Text variant="caption" style={styles.badgeText}></Text>
</View>
);
}
return badges;
};
const renderTopComment = () => {
if (!post.top_comment) return null;
const { top_comment } = post;
const topCommentContainerStyles = [
styles.topCommentContainer,
...(isDesktop ? [styles.topCommentContainerWide] : [])
];
const topCommentAuthorStyles = [
styles.topCommentAuthor,
...(isDesktop ? [styles.topCommentAuthorWide] : [])
];
const topCommentTextStyles = [
styles.topCommentText,
...(isDesktop ? [styles.topCommentTextWide] : [])
];
const moreCommentsStyles = [
styles.moreComments,
...(isDesktop ? [styles.moreCommentsWide] : [])
];
return (
<View style={topCommentContainerStyles}>
<View style={styles.topCommentContent}>
<Text
variant="caption"
color={colors.text.secondary}
style={topCommentAuthorStyles}
>
{top_comment.author?.nickname || '匿名用户'}:
</Text>
<Text
variant="caption"
color={colors.text.secondary}
style={topCommentTextStyles}
numberOfLines={isDesktop ? 2 : 1}
>
{top_comment.content}
</Text>
</View>
{post.comments_count > 1 && (
<Text
variant="caption"
color={colors.primary.main}
style={moreCommentsStyles}
>
{formatNumber(post.comments_count)}
</Text>
)}
</View>
);
};
// 渲染投票预览
const renderVotePreview = () => {
if (!post.is_vote) return null;
return (
<VotePreview
onPress={onPress}
/>
);
};
// 渲染小红书风格的两栏卡片
const renderGridVariant = () => {
// 获取封面图(第一张图)
const coverImage = post.images && Array.isArray(post.images) && post.images.length > 0 ? post.images[0] : null;
const hasImage = !!coverImage;
// 防御性检查:确保 author 存在
const author = post.author || { id: '', nickname: '匿名用户', avatar: null, username: '' };
// 根据图片实际宽高比或使用随机值创建错落感
// 使用帖子 ID 生成一个伪随机值,确保每次渲染一致但不同帖子有差异
const postId = post.id || '';
const hash = postId.split('').reduce((a, b) => a + b.charCodeAt(0), 0);
const aspectRatios = [0.7, 0.75, 0.8, 0.85, 0.9, 1, 1.1, 1.2];
const aspectRatio = aspectRatios[hash % aspectRatios.length];
// 获取正文预览(无图时显示)
const getContentPreview = (content: string | undefined | null): string => {
if (!content) return '';
// 移除 Markdown 标记和多余空白
return content
.replace(/[#*_~`\[\]()]/g, '')
.replace(/\n+/g, ' ')
.trim();
};
const contentPreview = getContentPreview(post.content);
// 响应式字体大小(网格模式)
const gridTitleFontSize = isDesktop ? 16 : isTablet ? 15 : 14;
const gridUsernameFontSize = isDesktop ? 14 : 12;
const gridLikeFontSize = isDesktop ? 14 : 12;
return (
<TouchableOpacity
style={[
styles.gridContainer,
!hasImage && styles.gridContainerNoImage,
isDesktop && styles.gridContainerDesktop
]}
onPress={onPress}
activeOpacity={0.9}
>
{/* 封面图 - 只有有图片时才渲染,无图时不显示占位区域 */}
{hasImage && (
<TouchableOpacity
activeOpacity={0.8}
onPress={() => onImagePress?.(post.images || [], 0)}
>
<SmartImage
source={{ uri: coverImage.thumbnail_url || coverImage.url || '' }}
style={[styles.gridCoverImage, { aspectRatio }]}
resizeMode="cover"
/>
</TouchableOpacity>
)}
{/* 无图时的正文预览区域 */}
{!hasImage && contentPreview && (
<View style={[styles.gridContentPreview, isDesktop ? styles.gridContentPreviewDesktop : null]}>
<Text
style={[styles.gridContentText, ...(isDesktop ? [styles.gridContentTextDesktop] : [])]}
numberOfLines={isDesktop ? 8 : 6}
>
{contentPreview}
</Text>
</View>
)}
{/* 投票标识 */}
{post.is_vote && (
<View style={styles.gridVoteBadge}>
<MaterialCommunityIcons name="vote" size={isDesktop ? 14 : 12} color={colors.primary.contrast} />
<Text style={styles.gridVoteBadgeText}></Text>
</View>
)}
{/* 标题 - 无图时显示更多行 */}
{post.title && (
<Text
style={[
styles.gridTitle,
{ fontSize: gridTitleFontSize },
...(hasImage ? [] : [styles.gridTitleNoImage]),
...(isDesktop ? [styles.gridTitleDesktop] : [])
]}
numberOfLines={hasImage ? 2 : 3}
>
{post.title}
</Text>
)}
{/* 底部信息 */}
<View style={[styles.gridFooter, isDesktop && styles.gridFooterDesktop]}>
<TouchableOpacity style={styles.gridUserInfo} onPress={onUserPress}>
<Avatar
source={author.avatar}
size={isDesktop ? 24 : 20}
name={author.nickname}
/>
<Text style={[styles.gridUsername, { fontSize: gridUsernameFontSize }]} numberOfLines={1}>
{author.nickname}
</Text>
</TouchableOpacity>
<View style={styles.gridLikeInfo}>
<MaterialCommunityIcons name="heart" size={isDesktop ? 16 : 14} color="#666" />
<Text style={[styles.gridLikeCount, { fontSize: gridLikeFontSize }]}>
{formatNumber(post.likes_count)}
</Text>
</View>
</View>
</TouchableOpacity>
);
};
// 根据 variant 渲染不同样式
if (variant === 'grid') {
return renderGridVariant();
}
// 防御性检查:确保 author 存在
const author = post.author || { id: '', nickname: '匿名用户', avatar: null, username: '' };
// 计算响应式内容最大行数
const contentNumberOfLines = useMemo(() => {
if (isWideScreen) return 8;
if (isDesktop) return 6;
if (isTablet) return 5;
return 3;
}, [isWideScreen, isDesktop, isTablet]);
return (
<TouchableOpacity
style={[
styles.container,
{
paddingHorizontal: responsivePadding,
paddingVertical: responsivePadding * 0.75,
...(isDesktop || isWideScreen ? {
borderRadius: borderRadius.lg,
marginHorizontal: cardPadding,
marginVertical: spacing.sm,
shadowColor: '#000',
shadowOffset: { width: 0, height: 2 },
shadowOpacity: 0.08,
shadowRadius: 8,
elevation: 3,
} : {})
}
]}
onPress={onPress}
activeOpacity={0.9}
>
{/* 用户信息 */}
<View style={styles.userSection}>
<TouchableOpacity onPress={onUserPress}>
<Avatar
source={author.avatar}
size={avatarSize}
name={author.nickname}
/>
</TouchableOpacity>
<View style={styles.userInfo}>
<View style={styles.userNameRow}>
<TouchableOpacity onPress={onUserPress}>
<Text
variant="body"
style={[
styles.username,
{ fontSize: isDesktop ? fontSizes.lg : fontSizes.md }
]}
>
{author.nickname}
</Text>
</TouchableOpacity>
{renderBadges()}
</View>
<View style={styles.postMeta}>
<Text variant="caption" color={colors.text.hint} style={styles.timeText}>
{formatTime(post.created_at || '')}
</Text>
</View>
</View>
{post.is_pinned && (
<View style={styles.pinnedTag}>
<MaterialCommunityIcons name="pin" size={isDesktop ? 14 : 12} color={colors.warning.main} />
<Text variant="caption" color={colors.warning.main} style={styles.pinnedText}></Text>
</View>
)}
{/* 删除按钮 - 只对帖子作者显示 */}
{isPostAuthor && onDelete && (
<TouchableOpacity
style={styles.deleteButton}
onPress={handleDelete}
disabled={isDeleting}
>
<MaterialCommunityIcons
name={isDeleting ? 'loading' : 'delete-outline'}
size={isDesktop ? 20 : 18}
color={colors.text.hint}
/>
</TouchableOpacity>
)}
</View>
{/* 标题 */}
{post.title && (
<Text
variant="body"
numberOfLines={compact ? 2 : undefined}
style={[
styles.title,
{ fontSize: responsiveTitleFontSize, lineHeight: responsiveTitleFontSize * 1.4 }
]}
>
{post.title}
</Text>
)}
{/* 内容 */}
{!compact && (
<>
<Text
variant="body"
color={colors.text.secondary}
numberOfLines={isExpanded ? undefined : contentNumberOfLines}
style={[
styles.content,
{ fontSize: responsiveFontSize, lineHeight: responsiveFontSize * 1.5 }
]}
>
{getTruncatedContent(post.content, getResponsiveMaxLength())}
</Text>
{post.content && post.content.length > getResponsiveMaxLength() && (
<TouchableOpacity
onPress={() => setIsExpanded(!isExpanded)}
style={styles.expandButton}
>
<Text variant="caption" color={colors.primary.main}>
{isExpanded ? '收起' : '展开全文'}
</Text>
</TouchableOpacity>
)}
</>
)}
{/* 图片 */}
{renderImages()}
{/* 投票预览 */}
{renderVotePreview()}
{/* 热门评论预览 */}
{renderTopComment()}
{/* 交互按钮 */}
<View style={[styles.actionBar, isDesktop ? styles.actionBarWide : null]}>
<View style={styles.viewCount}>
<MaterialCommunityIcons name="eye-outline" size={isDesktop ? 18 : 16} color={colors.text.hint} />
<Text
variant="caption"
color={colors.text.hint}
style={[styles.actionText, ...(isDesktop ? [styles.actionTextWide] : [])]}
>
{formatNumber(post.views_count || 0)}
</Text>
</View>
<View style={styles.actionButtons}>
<TouchableOpacity style={[styles.actionButton, ...(isDesktop ? [styles.actionButtonWide] : [])]} onPress={onLike}>
<MaterialCommunityIcons
name={post.is_liked ? 'heart' : 'heart-outline'}
size={isDesktop ? 22 : 19}
color={post.is_liked ? colors.error.main : colors.text.secondary}
/>
<Text
variant="caption"
color={post.is_liked ? colors.error.main : colors.text.secondary}
style={[styles.actionText, ...(isDesktop ? [styles.actionTextWide] : [])]}
>
{post.likes_count > 0 ? formatNumber(post.likes_count) : '赞'}
</Text>
</TouchableOpacity>
<TouchableOpacity style={[styles.actionButton, ...(isDesktop ? [styles.actionButtonWide] : [])]} onPress={onComment}>
<MaterialCommunityIcons
name="comment-outline"
size={isDesktop ? 22 : 19}
color={colors.text.secondary}
/>
<Text variant="caption" color={colors.text.secondary} style={[styles.actionText, ...(isDesktop ? [styles.actionTextWide] : [])]}>
{post.comments_count > 0 ? formatNumber(post.comments_count) : '评论'}
</Text>
</TouchableOpacity>
<TouchableOpacity style={[styles.actionButton, ...(isDesktop ? [styles.actionButtonWide] : [])]} onPress={onShare}>
<MaterialCommunityIcons
name="share-outline"
size={isDesktop ? 22 : 19}
color={colors.text.secondary}
/>
</TouchableOpacity>
<TouchableOpacity style={[styles.actionButton, isDesktop && styles.actionButtonWide]} onPress={onBookmark}>
<MaterialCommunityIcons
name={post.is_favorited ? 'bookmark' : 'bookmark-outline'}
size={isDesktop ? 22 : 19}
color={post.is_favorited ? colors.warning.main : colors.text.secondary}
/>
</TouchableOpacity>
</View>
</View>
</TouchableOpacity>
);
};
const styles = StyleSheet.create({
container: {
backgroundColor: colors.background.paper,
borderBottomWidth: StyleSheet.hairlineWidth,
borderBottomColor: colors.divider,
},
// 宽屏卡片样式
wideCard: {
backgroundColor: colors.background.paper,
borderRadius: borderRadius.lg,
shadowColor: '#000',
shadowOffset: { width: 0, height: 2 },
shadowOpacity: 0.08,
shadowRadius: 8,
elevation: 3,
},
userSection: {
flexDirection: 'row',
alignItems: 'center',
marginBottom: spacing.sm,
},
userInfo: {
flex: 1,
marginLeft: spacing.sm,
},
userNameRow: {
flexDirection: 'row',
alignItems: 'center',
flexWrap: 'wrap',
},
username: {
fontWeight: '600',
color: colors.text.primary,
},
badge: {
paddingHorizontal: 4,
paddingVertical: 1,
borderRadius: 2,
marginLeft: spacing.xs,
},
authorBadge: {
backgroundColor: colors.primary.main,
},
adminBadge: {
backgroundColor: colors.error.main,
},
badgeText: {
color: colors.text.inverse,
fontSize: fontSizes.xs,
fontWeight: '600',
},
postMeta: {
flexDirection: 'row',
alignItems: 'center',
marginTop: 2,
},
timeText: {
fontSize: fontSizes.sm,
color: colors.text.hint,
},
pinnedTag: {
flexDirection: 'row',
alignItems: 'center',
backgroundColor: colors.warning.light + '20',
paddingHorizontal: spacing.xs,
paddingVertical: 2,
borderRadius: borderRadius.sm,
},
pinnedText: {
marginLeft: 2,
fontSize: fontSizes.xs,
fontWeight: '500',
},
deleteButton: {
padding: spacing.xs,
marginLeft: spacing.sm,
},
title: {
marginBottom: spacing.xs,
fontWeight: '600',
color: colors.text.primary,
},
content: {
marginBottom: spacing.xs,
color: colors.text.secondary,
},
expandButton: {
marginBottom: spacing.sm,
},
imagesContainer: {
marginBottom: spacing.md,
},
topCommentContainer: {
backgroundColor: colors.background.default,
borderRadius: borderRadius.sm,
padding: spacing.sm,
marginBottom: spacing.sm,
},
topCommentContainerWide: {
padding: spacing.md,
borderRadius: borderRadius.md,
},
topCommentContent: {
flexDirection: 'row',
alignItems: 'center',
},
topCommentAuthor: {
fontWeight: '600',
marginRight: spacing.xs,
},
topCommentAuthorWide: {
fontSize: fontSizes.sm,
},
topCommentText: {
flex: 1,
},
topCommentTextWide: {
fontSize: fontSizes.sm,
},
moreComments: {
marginTop: spacing.xs,
fontWeight: '500',
},
moreCommentsWide: {
fontSize: fontSizes.sm,
marginTop: spacing.sm,
},
actionBar: {
flexDirection: 'row',
justifyContent: 'space-between',
alignItems: 'center',
},
actionBarWide: {
marginTop: spacing.sm,
paddingTop: spacing.sm,
},
viewCount: {
flexDirection: 'row',
alignItems: 'center',
},
actionButtons: {
flexDirection: 'row',
alignItems: 'center',
},
actionButton: {
flexDirection: 'row',
alignItems: 'center',
marginLeft: spacing.md,
paddingVertical: spacing.xs,
},
actionButtonWide: {
marginLeft: spacing.lg,
paddingVertical: spacing.sm,
},
actionText: {
marginLeft: 6,
},
actionTextWide: {
fontSize: fontSizes.md,
},
// ========== 小红书风格两栏样式 ==========
gridContainer: {
backgroundColor: '#FFF',
overflow: 'hidden',
borderRadius: 8,
},
gridContainerDesktop: {
borderRadius: 12,
},
gridContainerNoImage: {
minHeight: 200,
justifyContent: 'space-between',
},
gridCoverImage: {
width: '100%',
aspectRatio: 0.7,
backgroundColor: '#F5F5F5',
},
gridCoverPlaceholder: {
width: '100%',
aspectRatio: 0.7,
backgroundColor: '#F5F5F5',
alignItems: 'center',
justifyContent: 'center',
},
// 无图时的正文预览区域
gridContentPreview: {
backgroundColor: '#F8F8F8',
margin: 4,
padding: 8,
borderRadius: 8,
minHeight: 100,
},
gridContentPreviewDesktop: {
margin: 8,
padding: 12,
borderRadius: 12,
minHeight: 150,
},
gridContentText: {
fontSize: 13,
color: '#666',
lineHeight: 20,
},
gridContentTextDesktop: {
fontSize: 15,
lineHeight: 24,
},
gridTitle: {
color: '#333',
lineHeight: 20,
paddingHorizontal: 4,
paddingTop: 8,
minHeight: 44,
},
gridTitleNoImage: {
minHeight: 0,
paddingTop: 4,
},
gridTitleDesktop: {
paddingHorizontal: 8,
paddingTop: 12,
lineHeight: 24,
minHeight: 56,
},
gridFooter: {
flexDirection: 'row',
alignItems: 'center',
justifyContent: 'space-between',
paddingHorizontal: 4,
paddingVertical: 8,
},
gridFooterDesktop: {
paddingHorizontal: 8,
paddingVertical: 12,
},
gridUserInfo: {
flexDirection: 'row',
alignItems: 'center',
flex: 1,
},
gridUsername: {
color: '#666',
marginLeft: 6,
flex: 1,
},
gridLikeInfo: {
flexDirection: 'row',
alignItems: 'center',
},
gridLikeCount: {
color: '#666',
marginLeft: 4,
},
gridVoteBadge: {
position: 'absolute',
top: 8,
right: 8,
flexDirection: 'row',
alignItems: 'center',
backgroundColor: colors.primary.main + 'CC',
paddingHorizontal: 8,
paddingVertical: 4,
borderRadius: borderRadius.full,
gap: 4,
},
gridVoteBadgeText: {
fontSize: 10,
color: colors.primary.contrast,
fontWeight: '600',
},
});
export default PostCard;