some tweaks and readme

routes/user.js

@@ -253,4 +253,35 @@ router.get('/activity/:type', auth, async (req, res) => {
     }
 });
 
+router.delete('/delete', auth, async (req, res) => {
+    try{
+        const username = req.user;
+        const {password} = req.body;
+
+        if(!username) return res.status(400).json({error: "Missing username"});
+        if(!password) return res.status(400).json({error: "Missing password"});
+
+        const user = await db.query(`SELECT * FROM users WHERE username = string::lowercase("${username}")`);
+
+        if(user.length == 0) return res.status(400).json({error: "User does not exist"});
+
+        const verify = await passwordauth.verify(password, user[0].password);
+        if(!verify) return res.status(400).json({error: "Password is incorrect"});
+
+        const deletePosts = await db.query(`DELETE FROM posts WHERE author = string::lowercase("${username}")`);
+        const deleteComments = await db.query(`DELETE FROM comments WHERE author = string::lowercase("${username}")`);
+        const deleteLikedPosts = await db.query(`DELETE FROM posts WHERE likes = "${username}"`);
+        const deleteLikedComments = await db.query(`DELETE FROM comments WHERE likes = "${username}"`);
+        const deleteSavedPosts = await db.query(`DELETE FROM posts WHERE savedPosts = "${username}"`);
+        const deleteSavedComments = await db.query(`DELETE FROM comments WHERE savedComments = "${username}"`);
+        const deleteUser = await db.query(`DELETE FROM users WHERE username = string::lowercase("${username}")`);
+
+        res.status(200).json({message: "User deleted"});
+    }
+    catch(err){
+        console.log(err);
+        res.status(500).json({error: "Internal server error"});
+    }
+});
+
 module.exports = router;