add: added constraints do the db and removed useless db deletions

back/api/channels.js

@@ -100,8 +100,6 @@ router.post('/:name/delete', async (req, res) => {
         return res.status(401).send({ error: 'Unauthorized' });
     }
 
-    await deleteChannelMentions(connection, channel[0].id);
-    await deleteChannelMessages(connection, channel[0].id);
     await deleteChannel(connection, channel[0].id);
     connection.end();
 
@@ -206,7 +204,6 @@ router.post('/:name/messages/delete', checkAuth, async (req, res) => {
     }
 
     await deleteMessage(connection, message_id);
-    await deleMentions(connection, message_id);
     connection.end();
 
     req.sockets.emit({

back/api/users.js

@@ -84,8 +84,6 @@ router.post('/:username/delete', checkAuth, async (req, res) => {
         fs.unlinkSync(path.join(__dirname, `../data/pfps/${userToDelete[0].pfp}`));
     }
 
-    await deleteUserMentions(connection, userToDelete[0].id);
-    await deleteUserMessages(connection, userToDelete[0].id);
     await deleteUser(connection, userToDelete[0].id);
 
     connection.end();

back/forum.sql

@@ -0,0 +1,121 @@
+-- phpMyAdmin SQL Dump
+-- version 5.2.1
+-- https://www.phpmyadmin.net/
+--
+-- Host: mysql
+-- Generation Time: Apr 28, 2025 at 09:07 AM
+-- Server version: 10.11.3-MariaDB-1:10.11.3+maria~ubu2204
+-- PHP Version: 8.1.19
+
+SET SQL_MODE = "NO_AUTO_VALUE_ON_ZERO";
+START TRANSACTION;
+SET time_zone = "+00:00";
+
+
+/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
+/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
+/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
+/*!40101 SET NAMES utf8mb4 */;
+
+--
+-- Database: `forum`
+--
+CREATE DATABASE IF NOT EXISTS `forum` DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci;
+USE `forum`;
+
+-- --------------------------------------------------------
+
+--
+-- Table structure for table `channels`
+--
+
+CREATE TABLE IF NOT EXISTS `channels` (
+  `id` int(11) NOT NULL AUTO_INCREMENT,
+  `name` varchar(30) NOT NULL,
+  `description` text NOT NULL,
+  `owner_id` int(11) NOT NULL,
+  PRIMARY KEY (`id`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci;
+
+-- --------------------------------------------------------
+
+--
+-- Table structure for table `emojis`
+--
+
+CREATE TABLE IF NOT EXISTS `emojis` (
+  `id` int(11) NOT NULL AUTO_INCREMENT,
+  `name` varchar(20) NOT NULL,
+  `file` varchar(60) NOT NULL,
+  PRIMARY KEY (`id`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci;
+
+-- --------------------------------------------------------
+
+--
+-- Table structure for table `mentions`
+--
+
+CREATE TABLE IF NOT EXISTS `mentions` (
+  `id` int(11) NOT NULL AUTO_INCREMENT,
+  `message_id` int(11) NOT NULL,
+  `user_id` int(11) NOT NULL,
+  PRIMARY KEY (`id`),
+  KEY `mention_user_id` (`user_id`),
+  KEY `mention_message_id` (`message_id`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci;
+
+-- --------------------------------------------------------
+
+--
+-- Table structure for table `messages`
+--
+
+CREATE TABLE IF NOT EXISTS `messages` (
+  `id` int(11) NOT NULL AUTO_INCREMENT,
+  `channel_id` int(11) NOT NULL,
+  `user_id` int(11) NOT NULL,
+  `content` text NOT NULL,
+  `date` int(11) NOT NULL,
+  PRIMARY KEY (`id`),
+  KEY `message_user_id` (`user_id`),
+  KEY `message_channel_id` (`channel_id`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci;
+
+-- --------------------------------------------------------
+
+--
+-- Table structure for table `users`
+--
+
+CREATE TABLE IF NOT EXISTS `users` (
+  `id` int(11) NOT NULL AUTO_INCREMENT,
+  `username` varchar(50) NOT NULL,
+  `password` varchar(100) NOT NULL,
+  `pfp` varchar(60) DEFAULT NULL,
+  `admin` tinyint(1) NOT NULL DEFAULT 0,
+  PRIMARY KEY (`id`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci;
+
+--
+-- Constraints for dumped tables
+--
+
+--
+-- Constraints for table `mentions`
+--
+ALTER TABLE `mentions`
+  ADD CONSTRAINT `mention_message_id` FOREIGN KEY (`message_id`) REFERENCES `messages` (`id`) ON DELETE CASCADE ON UPDATE CASCADE,
+  ADD CONSTRAINT `mention_user_id` FOREIGN KEY (`user_id`) REFERENCES `users` (`id`) ON DELETE CASCADE ON UPDATE CASCADE;
+
+--
+-- Constraints for table `messages`
+--
+ALTER TABLE `messages`
+  ADD CONSTRAINT `message_channel_id` FOREIGN KEY (`channel_id`) REFERENCES `channels` (`id`) ON DELETE CASCADE ON UPDATE CASCADE,
+  ADD CONSTRAINT `message_user_id` FOREIGN KEY (`user_id`) REFERENCES `users` (`id`) ON DELETE CASCADE ON UPDATE CASCADE;
+COMMIT;
+
+/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
+/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
+/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;