92 lines
2.7 KiB
Dart
92 lines
2.7 KiB
Dart
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import 'package:flutter/material.dart';
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import '../../../core/theme/design_tokens.dart';
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enum MessageSender { user, ai }
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class ChatBubble extends StatelessWidget {
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final MessageSender sender;
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final String content;
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final DateTime timestamp;
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final bool showTimestamp;
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final Widget? extraContent;
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const ChatBubble({
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super.key,
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required this.sender,
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required this.content,
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required this.timestamp,
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this.showTimestamp = true,
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this.extraContent,
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});
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@override
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Widget build(BuildContext context) {
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final isUser = sender == MessageSender.user;
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return Padding(
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padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 6),
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child: Column(
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crossAxisAlignment: isUser
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? CrossAxisAlignment.end
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: CrossAxisAlignment.start,
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children: [
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if (showTimestamp)
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Padding(
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padding: const EdgeInsets.only(bottom: 6),
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child: Text(
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_formatTimestamp(timestamp),
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style: const TextStyle(fontSize: 11, color: AppColors.slate400),
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),
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),
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Container(
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constraints: BoxConstraints(
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maxWidth: MediaQuery.of(context).size.width * 0.82,
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),
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padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
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decoration: BoxDecoration(
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color: isUser ? AppColors.blue500 : AppColors.white,
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borderRadius: BorderRadius.circular(20),
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boxShadow: [
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BoxShadow(
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color: Colors.black.withValues(alpha: 0.06),
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blurRadius: 8,
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offset: const Offset(0, 2),
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),
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],
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),
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child: content.isNotEmpty
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? Text(
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content,
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style: TextStyle(
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fontSize: 15,
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color: isUser ? AppColors.white : AppColors.slate700,
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height: 1.45,
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),
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)
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: (extraContent ?? const SizedBox.shrink()),
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),
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],
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),
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);
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}
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String _formatTimestamp(DateTime time) {
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final now = DateTime.now();
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final today = DateTime(now.year, now.month, now.day);
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final msgDate = DateTime(time.year, time.month, time.day);
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String dateStr;
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if (msgDate == today) {
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dateStr = '今天';
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} else if (msgDate == today.subtract(const Duration(days: 1))) {
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dateStr = '昨天';
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} else {
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dateStr = '${time.month}月${time.day}日';
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}
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final timeStr =
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'${time.hour.toString().padLeft(2, '0')}:${time.minute.toString().padLeft(2, '0')}';
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return '$dateStr $timeStr';
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}
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}
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