add deletePost route

src/api/posts/deletePost.ts

@@ -0,0 +1,16 @@
+import { deletePost } from '@/controller/PostController';
+import { Request, Response } from 'express';
+
+export default async (req: Request, res: Response) => {
+  try {
+    const id = parseInt(req.params.id);
+    const userId = 1; // hardcoded for now, use userId from token
+    const deletedPost = await deletePost(id, userId);
+    if (deletedPost instanceof Error) {
+      return res.status(403).send(deletedPost.message);
+    }
+    return res.status(200).send({ message: 'Post deleted' });
+  } catch (error) {
+    return res.status(500).send(error);
+  }
+};

src/api/posts/index.ts

@@ -1,12 +1,14 @@
+import { Router } from 'express';
 import getPosts from './getPosts';
 import postPost from './newPost';
 import putPost from './editPost';
-import { Router } from 'express';
+import deletePost from './deletePost';
 
 const posts = Router();
 
 posts.get('/', getPosts);
 posts.post('/new', postPost);
 posts.put('/edit/:id', putPost);
+posts.delete('/delete/:id', deletePost);
 
 export default posts;

src/controller/PostController.ts

@@ -1,4 +1,4 @@
-import { PrismaClient, Post as PrismaPost } from '@prisma/client';
+import { PrismaClient, Post as PrismaPost, User } from '@prisma/client';
 import { Post } from '@/models/PostModel';
 
 const prisma = new PrismaClient();
@@ -71,4 +71,23 @@ const editPost = async (post: Post): Promise<PrismaPost | null | Error> => {
   return editedPost;
 };
 
-export { getAllPosts, createPost, editPost, getPostById };
+const deletePost = async (id: number, userId: number): Promise<PrismaPost | Error> => {
+  const post = await prisma.post.findUnique({
+    where: {
+      id,
+    },
+  });
+  if (post === null) {
+    return new Error('Post not found');
+  }
+  if (post.authorId !== userId) {
+    return new Error('User is not the author of this post');
+  }
+  return prisma.post.delete({
+    where: {
+      id,
+    },
+  });
+};
+
+export { getAllPosts, createPost, editPost, getPostById, deletePost };