feat(comments): 实现评论点赞功能

- 在数据库和API中添加likes字段支持
- 新增评论点赞接口和前端交互逻辑
- 在前端展示点赞数并处理点赞操作
- 更新相关组件和存储逻辑以支持点赞功能

cwd-api/src/api/public/getComments.ts

@@ -36,7 +36,7 @@ export const getComments = async (c: Context<{ Bindings: Bindings }>) => {
     let query = `
       SELECT id, name, email, url, content_text as contentText, 
              content_html as contentHtml, created, parent_id as parentId,
-             post_slug as postSlug, priority
+             post_slug as postSlug, priority, COALESCE(likes, 0) as likes
       FROM Comment 
       WHERE status = "approved" AND post_slug = ?
       ORDER BY priority DESC, created DESC
@@ -46,7 +46,7 @@ export const getComments = async (c: Context<{ Bindings: Bindings }>) => {
       query = `
         SELECT id, name, email, url, content_text as contentText, 
                content_html as contentHtml, created, parent_id as parentId,
-               post_slug as postSlug, priority
+               post_slug as postSlug, priority, COALESCE(likes, 0) as likes
         FROM Comment 
         WHERE status = "approved" AND post_slug IN (${placeholders})
         ORDER BY priority DESC, created DESC

cwd-api/src/api/public/likeComment.ts

@@ -0,0 +1,64 @@
+import { Context } from 'hono';
+import { Bindings } from '../../bindings';
+
+export const likeComment = async (c: Context<{ Bindings: Bindings }>) => {
+	let body: any = null;
+	try {
+		body = await c.req.json();
+	} catch {
+		body = null;
+	}
+
+	const rawId =
+		(body && (body.id ?? body.commentId)) ??
+		c.req.query('id') ??
+		c.req.query('commentId') ??
+		null;
+
+	const parsed =
+		typeof rawId === 'number'
+			? rawId
+			: typeof rawId === 'string' && rawId.trim()
+			? Number.parseInt(rawId.trim(), 10)
+			: NaN;
+
+	if (!Number.isFinite(parsed) || parsed <= 0) {
+		return c.json({ message: 'Missing or invalid id' }, 400);
+	}
+
+	const id = parsed;
+
+	try {
+		const existing = await c.env.CWD_DB.prepare(
+			'SELECT id, likes FROM Comment WHERE id = ?'
+		)
+			.bind(id)
+			.first<{ id: number; likes?: number }>();
+
+		if (!existing) {
+			return c.json({ message: 'Comment not found' }, 404);
+		}
+
+		await c.env.CWD_DB.prepare(
+			'UPDATE Comment SET likes = COALESCE(likes, 0) + 1 WHERE id = ?'
+		)
+			.bind(id)
+			.run();
+
+		const updated = await c.env.CWD_DB.prepare(
+			'SELECT COALESCE(likes, 0) as likes FROM Comment WHERE id = ?'
+		)
+			.bind(id)
+			.first<{ likes?: number }>();
+
+		const likes =
+			updated && typeof updated.likes === 'number' && Number.isFinite(updated.likes) && updated.likes >= 0
+				? updated.likes
+				: ((existing.likes || 0) + 1);
+
+		return c.json({ id, likes });
+	} catch (e: any) {
+		return c.json({ message: e?.message || '点赞失败' }, 500);
+	}
+};
+