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* 聊天对话界面
*
* 功能：
* - 显示聊天消息
* - 发送消息
* - 实时接收新消息
* - 自动标记已读
*/
import React, { useState, useEffect, useRef, useCallback } from 'react';
import {
View,
Text,
StyleSheet,
FlatList,
TextInput,
TouchableOpacity,
Image,
KeyboardAvoidingView,
Platform,
ActivityIndicator,
Dimensions,
} from 'react-native';
import { Stack, useRouter, useLocalSearchParams } from 'expo-router';
import { LinearGradient } from 'expo-linear-gradient';
import { ChevronLeft, Send, User } from '@tamagui/lucide-icons';
import { useSafeAreaInsets } from 'react-native-safe-area-context';
import Animated, { FadeInDown, FadeIn } from 'react-native-reanimated';
import { useThemeColors, useIsDarkMode } from '@/src/hooks/useThemeColors';
import {
supabaseChatService,
supabaseProfileService,
type Message,
type Profile,
} from '@/src/lib/supabase';
const { width: SCREEN_WIDTH } = Dimensions.get('window');
export default function ChatScreen() {
const router = useRouter();
const insets = useSafeAreaInsets();
const colors = useThemeColors();
const isDark = useIsDarkMode();
const params = useLocalSearchParams();
const conversationId = Number(params.conversationId);
const otherUserId = params.userId as string;
const [messages, setMessages] = useState<Message[]>([]);
const [otherUser, setOtherUser] = useState<Profile | null>(null);
const [inputText, setInputText] = useState('');
const [loading, setLoading] = useState(false);
const [sending, setSending] = useState(false);
const flatListRef = useRef<FlatList>(null);
const inputRef = useRef<TextInput>(null);
useEffect(() => {
loadData();
// 订阅实时消息
const unsubscribe = supabaseChatService.subscribeToMessages(conversationId, (newMessage) => {
setMessages((prev) => {
// 避免重复添加（发送消息时已手动添加）
const exists = prev.some((msg) => msg.id === newMessage.id);
if (exists) return prev;
return [...prev, newMessage];
});
scrollToBottom();
// 如果不是自己发送的消息，标记为已读
if (newMessage.senderId !== otherUserId) {
supabaseChatService.markMessagesAsRead(conversationId);
}
});
// 标记消息为已读
supabaseChatService.markMessagesAsRead(conversationId);
return () => {
unsubscribe();
};
}, [conversationId]);
const loadData = async () => {
setLoading(true);
try {
// 加载对方用户信息
Eif (otherUserId) {
const userResponse = await supabaseProfileService.getProfileById(otherUserId);
Eif (userResponse.success && userResponse.data) {
setOtherUser(userResponse.data);
}
}
// 加载消息
const messagesResponse = await supabaseChatService.getMessages(conversationId);
Eif (messagesResponse.success && messagesResponse.data) {
setMessages(messagesResponse.data);
setTimeout(() => scrollToBottom(), 100);
}
} finally {
setLoading(false);
}
};
const scrollToBottom = () => {
Iif (flatListRef.current && messages.length > 0) {
flatListRef.current.scrollToEnd({ animated: true });
}
};
const handleSend = async () => {
if (!inputText.trim() || sending) return;
const content = inputText.trim();
setInputText('');
setSending(true);
try {
const response = await supabaseChatService.sendMessage(conversationId, content);
if (response.success && response.data) {
// 立即添加消息到本地列表（不依赖实时订阅延迟）
setMessages((prev) => {
// 检查消息是否已存在（避免实时订阅重复添加）
const exists = prev.some((msg) => msg.id === response.data!.id);
if (exists) return prev;
return [...prev, response.data!];
});
scrollToBottom();
}
} catch (error) {
console.error('Failed to send message:', error);
setInputText(content); // 恢复输入内容
} finally {
setSending(false);
}
};
const isMyMessage = useCallback(
(message: Message) => {
return message.senderId !== otherUserId;
},
[otherUserId]
);
const formatTime = (dateString: string) => {
const date = new Date(dateString);
return date.toLocaleTimeString('zh-CN', { hour: '2-digit', minute: '2-digit' });
};
const shouldShowTimestamp = (currentMessage: Message, previousMessage?: Message) => {
Eif (!previousMessage) return true;
const currentTime = new Date(currentMessage.createdAt).getTime();
const previousTime = new Date(previousMessage.createdAt).getTime();
// 超过5分钟显示时间戳
return currentTime - previousTime > 5 * 60 * 1000;
};
const renderMessage = ({ item, index }: { item: Message; index: number }) => {
const isMine = isMyMessage(item);
const previousMessage = index > 0 ? messages[index - 1] : undefined;
const showTimestamp = shouldShowTimestamp(item, previousMessage);
return (
<Animated.View
entering={FadeInDown.duration(300).delay(index * 50)}
style={styles.messageContainer}
>
{showTimestamp && (
<View style={styles.timestampContainer}>
<Text
style={[
styles.timestampText,
{ backgroundColor: colors.backgroundMuted, color: colors.textTertiary },
]}
>
{formatTime(item.createdAt)}
</Text>
</View>
)}
<View style={[styles.messageRow, isMine && styles.messageRowMine]}>
{!isMine && (
<View style={styles.avatarContainer}>
{otherUser?.avatarUrl ? (
<Image source={{ uri: otherUser.avatarUrl }} style={styles.avatar} />
) : (
<View style={[styles.avatarPlaceholder, { backgroundColor: colors.border }]}>
<User size={16} color="#FFFFFF" strokeWidth={2} />
</View>
)}
</View>
)}
<View
style={[
styles.messageBubble,
isMine
? [styles.messageBubbleMine, { backgroundColor: colors.primary }]
: [
styles.messageBubbleOther,
{ backgroundColor: colors.cardBackground, borderColor: colors.borderMuted },
],
]}
>
<Text style={[styles.messageText, { color: isMine ? 'white' : colors.text }]}>
{item.content}
</Text>
</View>
</View>
</Animated.View>
);
};
const renderHeader = () => {
if (loading && messages.length === 0) {
return (
<View style={styles.loadingContainer}>
<ActivityIndicator size="large" color={colors.primary} />
</View>
);
}
return null;
};
return (
<View
testID="chat-screen"
style={[styles.container, { paddingTop: insets.top, backgroundColor: colors.background }]}
>
<Stack.Screen options={{ headerShown: false }} />
{/* 自定义头部 */}
<LinearGradient
colors={isDark ? ['#3D2A1F', '#2D1F1A'] : ['#FEBE98', '#FFCCBC']}
start={{ x: 0, y: 0 }}
end={{ x: 1, y: 0 }}
style={styles.header}
>
<TouchableOpacity
style={styles.backButton}
onPress={() => {
// 返回到消息列表
if (router.canGoBack()) {
router.back();
} else {
router.replace('/(tabs)/profile/messages');
}
}}
activeOpacity={0.8}
>
<ChevronLeft size={28} color="#FFFFFF" strokeWidth={2.5} />
</TouchableOpacity>
<View style={styles.headerCenter}>
{otherUser?.avatarUrl ? (
<Image source={{ uri: otherUser.avatarUrl }} style={styles.headerAvatar} />
) : (
<View style={styles.headerAvatarPlaceholder}>
<User size={18} color="#FFFFFF" strokeWidth={2} />
</View>
)}
<Text style={styles.headerTitle}>{otherUser?.username || '加载中...'}</Text>
</View>
<View style={styles.backButton} />
</LinearGradient>
{/* 消息列表 */}
<KeyboardAvoidingView
style={styles.flex1}
behavior={Platform.OS === 'ios' ? 'padding' : undefined}
keyboardVerticalOffset={Platform.OS === 'ios' ? 0 : 0}
>
<FlatList
ref={flatListRef}
data={messages}
renderItem={renderMessage}
keyExtractor={(item) => item.id.toString()}
contentContainerStyle={styles.messagesList}
showsVerticalScrollIndicator={false}
ListHeaderComponent={renderHeader}
onContentSizeChange={scrollToBottom}
onLayout={scrollToBottom}
/>
{/* 输入框 */}
<View
style={[
styles.inputContainer,
{
paddingBottom: insets.bottom || 8,
backgroundColor: colors.cardBackground,
borderTopColor: colors.borderMuted,
},
]}
>
<View style={[styles.inputWrapper, { backgroundColor: colors.backgroundMuted }]}>
<TextInput
ref={inputRef}
style={[styles.input, { color: colors.text }]}
value={inputText}
onChangeText={setInputText}
placeholder="输入消息..."
placeholderTextColor={colors.textTertiary}
multiline
maxLength={1000}
returnKeyType="send"
onSubmitEditing={handleSend}
/>
<TouchableOpacity
style={[
styles.sendButton,
{ backgroundColor: colors.primary },
!inputText.trim() && [
styles.sendButtonDisabled,
{ backgroundColor: colors.border },
],
]}
onPress={handleSend}
disabled={!inputText.trim() || sending}
activeOpacity={0.8}
>
{sending ? (
<ActivityIndicator size="small" color="#FFFFFF" />
) : (
<Send size={20} color="#FFFFFF" strokeWidth={2} />
)}
</TouchableOpacity>
</View>
</View>
</KeyboardAvoidingView>
</View>
);
}
const styles = StyleSheet.create({
container: {
flex: 1,
backgroundColor: '#F9FAFB',
},
flex1: {
flex: 1,
},
header: {
flexDirection: 'row',
alignItems: 'center',
justifyContent: 'space-between',
paddingHorizontal: 16,
paddingVertical: 12,
elevation: 4,
shadowColor: '#000',
shadowOffset: { width: 0, height: 2 },
shadowOpacity: 0.1,
shadowRadius: 8,
},
backButton: {
width: 40,
height: 40,
alignItems: 'center',
justifyContent: 'center',
},
headerCenter: {
flex: 1,
flexDirection: 'row',
alignItems: 'center',
justifyContent: 'center',
gap: 12,
},
headerAvatar: {
width: 36,
height: 36,
borderRadius: 18,
borderWidth: 2,
borderColor: '#FFFFFF',
},
headerAvatarPlaceholder: {
width: 36,
height: 36,
borderRadius: 18,
backgroundColor: 'rgba(255, 255, 255, 0.3)',
alignItems: 'center',
justifyContent: 'center',
borderWidth: 2,
borderColor: '#FFFFFF',
},
headerTitle: {
fontSize: 18,
fontWeight: '700',
color: '#FFFFFF',
},
loadingContainer: {
flex: 1,
alignItems: 'center',
justifyContent: 'center',
paddingVertical: 100,
},
messagesList: {
paddingHorizontal: 16,
paddingVertical: 16,
flexGrow: 1,
},
messageContainer: {
marginBottom: 4,
},
timestampContainer: {
alignItems: 'center',
marginVertical: 16,
},
timestampText: {
fontSize: 12,
color: '#9CA3AF',
backgroundColor: '#F3F4F6',
paddingHorizontal: 12,
paddingVertical: 4,
borderRadius: 12,
},
messageRow: {
flexDirection: 'row',
alignItems: 'flex-end',
marginBottom: 8,
},
messageRowMine: {
justifyContent: 'flex-end',
},
avatarContainer: {
marginRight: 8,
marginBottom: 2,
},
avatar: {
width: 32,
height: 32,
borderRadius: 16,
},
avatarPlaceholder: {
width: 32,
height: 32,
borderRadius: 16,
backgroundColor: '#D1D5DB',
alignItems: 'center',
justifyContent: 'center',
},
messageBubble: {
maxWidth: SCREEN_WIDTH * 0.7,
paddingHorizontal: 16,
paddingVertical: 10,
borderRadius: 20,
},
messageBubbleOther: {
backgroundColor: '#FFFFFF',
borderBottomLeftRadius: 4,
elevation: 1,
shadowColor: '#000',
shadowOffset: { width: 0, height: 1 },
shadowOpacity: 0.05,
shadowRadius: 2,
},
messageBubbleMine: {
borderBottomRightRadius: 4,
},
messageText: {
fontSize: 15,
lineHeight: 20,
color: '#111827',
},
messageTextMine: {
color: '#FFFFFF',
},
inputContainer: {
backgroundColor: '#FFFFFF',
borderTopWidth: 1,
borderTopColor: '#E5E7EB',
paddingHorizontal: 16,
paddingTop: 12,
},
inputWrapper: {
flexDirection: 'row',
alignItems: 'flex-end',
backgroundColor: '#F3F4F6',
borderRadius: 24,
paddingHorizontal: 16,
paddingVertical: 8,
minHeight: 48,
},
input: {
flex: 1,
fontSize: 15,
lineHeight: 20,
color: '#111827',
maxHeight: 100,
paddingVertical: 8,
},
sendButton: {
width: 36,
height: 36,
borderRadius: 18,
alignItems: 'center',
justifyContent: 'center',
marginLeft: 8,
},
sendButtonDisabled: {
backgroundColor: '#D1D5DB',
},
});
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