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2026-10-15 20:36:59 +08:00
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+import 'package:flutter/material.dart';
+import 'package:go_router/go_router.dart';
+
+import '../../../core/theme/app_theme.dart';
+import '../../../models/video_item.dart';
+
+/// 左下信息区（《01-开发文档》5.2.1）：
+/// 作者昵称、标题（标题后 #标签，点击跳转标签视频页）、描述（展开/收起）
+class VideoInfoSection extends StatefulWidget {
+  const VideoInfoSection({super.key, required this.item});
+
+  final VideoItem item;
+
+  @override
+  State<VideoInfoSection> createState() => _VideoInfoSectionState();
+}
+
+class _VideoInfoSectionState extends State<VideoInfoSection> {
+  bool _expanded = false;
+
+  @override
+  Widget build(BuildContext context) {
+    final item = widget.item;
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      mainAxisSize: MainAxisSize.min,
+      children: [
+        // 昵称
+        Text(
+          '@${item.author.nickname}',
+          style: const TextStyle(
+            color: Colors.white,
+            fontSize: 16,
+            fontWeight: FontWeight.w700,
+            shadows: [Shadow(color: Colors.black54, blurRadius: 4)],
+          ),
+        ),
+        const SizedBox(height: 8),
+
+        // 标题 + #标签（点击标签跳转标签视频页）
+        Wrap(
+          crossAxisAlignment: WrapCrossAlignment.center,
+          spacing: 6,
+          runSpacing: 4,
+          children: [
+            if (item.title.isNotEmpty)
+              Text(
+                item.title,
+                style: const TextStyle(
+                  color: Colors.white,
+                  fontSize: 15,
+                  shadows: [Shadow(color: Colors.black54, blurRadius: 4)],
+                ),
+              ),
+            for (final tag in item.tags)
+              GestureDetector(
+                onTap: () => context.push('/tags/${Uri.encodeComponent(tag)}'),
+                child: Text(
+                  '#$tag',
+                  style: const TextStyle(
+                    color: AppColors.secondary,
+                    fontSize: 15,
+                    fontWeight: FontWeight.w600,
+                    shadows: [Shadow(color: Colors.black54, blurRadius: 4)],
+                  ),
+                ),
+              ),
+          ],
+        ),
+
+        // 描述（展开/收起）
+        if (item.description.isNotEmpty) ...[
+          const SizedBox(height: 6),
+          GestureDetector(
+            onTap: () => setState(() => _expanded = !_expanded),
+            child: Text(
+              item.description,
+              maxLines: _expanded ? null : 1,
+              overflow: _expanded ? null : TextOverflow.ellipsis,
+              style: const TextStyle(color: AppColors.textSecondary, fontSize: 13),
+            ),
+          ),
+          if (!_expanded && item.description.length > 30)
+            const Text(
+              '展开',
+              style: TextStyle(color: AppColors.textWeak, fontSize: 12),
+            ),
+        ],
+      ],
+    );
+  }
+}