feat: 添加删除文章功能

server/api/posts/deletePost.ts

@@ -0,0 +1,61 @@
+// miaoBlog/server/api/posts/deletePost.ts
+import DB from 'better-sqlite3';
+import cacheResult from '~/server/utils/cacheRes';
+
+function prepareDB() {
+    const db = new DB('./userData/db/posts.db');
+
+    const deletePostStmt = db.prepare('DELETE FROM posts WHERE id = ?');
+    const deleteContentStmt = db.prepare('DELETE FROM postContent WHERE id = ?');
+    const getTagIdStmt = db.prepare('SELECT tag_id FROM posts WHERE id = ?');
+    const deleteTagsStmt = db.prepare('DELETE FROM tags WHERE id = ?');
+
+    return { db, deletePostStmt, deleteContentStmt, getTagIdStmt, deleteTagsStmt };
+}
+
+export default defineEventHandler(async (event) => {
+    const { db, deletePostStmt, deleteContentStmt, getTagIdStmt, deleteTagsStmt } = cacheResult(prepareDB)();
+
+    const body = await readBody(event);
+    const { id } = body;
+
+    // 检查是否提供了有效的id
+    if (!id || isNaN(Number(id))) {
+        db.close();
+        return {
+            code: 400,
+            msg: '无效的id'
+        };
+    }
+
+    try {
+        // 开启事务
+        db.transaction(() => {
+            // 先从posts表中删除文章记录
+            deletePostStmt.run(Number(id));
+
+            // 再从postContent表中删除文章内容记录
+            deleteContentStmt.run(Number(id));
+
+            // 查找该文章对应的tag_id
+            const tagRow: any = getTagIdStmt.get(Number(id));
+            if (tagRow && tagRow.tag_id) {
+                // 如果存在tag_id，从tags表中删除对应的标签记录
+                deleteTagsStmt.run(tagRow.tag_id);
+            }
+        })();
+
+        db.close();
+        return {
+            code: 200,
+            msg: '删除成功'
+        };
+    } catch (error) {
+        console.error('删除数据时出错:', error);
+        db.close();
+        return {
+            code: 500,
+            msg: '服务器内部错误'
+        };
+    }
+});