add: added limit param to message get url to send fewer messages

back/api/channels.js

@@ -4,17 +4,13 @@ const {
     getChannels,
     getChannel,
     addChannel,
-    getMessage,
     getMessages,
     addMessage,
-    deleteMessage,
     addMention,
     getMentions,
     getUserByUsername,
     deleteChannelMessages,
     deleteChannel,
-    setHasReplies,
-    addReply,
     getMessageReplies
 } = require('../libs/mysql');
 const rateLimit = require("express-rate-limit");
@@ -130,13 +126,14 @@ async function getReplies(message, connection) {
 
 router.get('/:name/messages', async (req, res) => {
     const name = req.params.name;
+    const limit = Number(req.query.limit) || 10;
     const connection = await getConnection();
     const channel = await getChannel(connection, name);
     if (!channel[0]) {
         connection.end();
         return res.send('No channel found');
     }
-    const messages = await getMessages(connection, channel[0].id);
+    const messages = await getMessages(connection, channel[0].id, limit);
 
     for (const message of messages) {
         if (message.content.includes('@')) {

back/libs/mysql.js

@@ -335,7 +335,7 @@ function deleteChannelMessages(connection, channel_id) {
   });
 }
 
-function getMessages(connection, channel_id) {
+function getMessages(connection, channel_id, limit) {
   return new Promise((resolve, reject) => {
     connection.query(
       `SELECT messages.id, user_id, username, content, date, channels.name AS channel_name, has_replies
@@ -343,8 +343,9 @@ function getMessages(connection, channel_id) {
        JOIN users ON messages.user_id = users.id 
        JOIN channels ON messages.channel_id = channels.id 
        WHERE channel_id = ? AND reply_to_id IS NULL 
-       ORDER BY date DESC`,
-      [channel_id],
+       ORDER BY date DESC
+       LIMIT ?`,
+      [channel_id, limit],
       (error, result) => {
         if (error) {
           reject(new Error(error));