include a way to intentionally not send message to telegram

or partially

.eslintrc.js

@@ -18,6 +18,7 @@ module.exports = {
   rules: {
     "no-underscore-dangle": 'off',
     "space-in-parens": 'warn',
-    "array-bracket-spacing": 'warn'
+    "array-bracket-spacing": 'warn',
+    "computed-property-spacing": 'warn',
   },
 };

src/events/exams.ts

@@ -66,17 +66,24 @@ export default async function examHandler( message: Message ) {
     return;
   }
   if ( result === null ) {
-    // message was sent in different channel
+    // message was sent in different channel 
     return;
   }
   if ( result ) {
     try {
       const returnCode = await TelegramBot.sendMessage( message );
-      if ( returnCode === -1 ) {
-        const errorMessage = await sendErrorEmbed( message );
-        errorMessage.delete( deleteOptions );
-      } else {
-        logger.info( 'A message has been send to Telegram feed' );
+      let errorMessage;
+      switch ( returnCode ) {
+        case -1:
+          errorMessage = await sendErrorEmbed( message );
+          errorMessage.delete( deleteOptions );
+          break;
+        case -2:
+          message.react( '🔇' );
+          logger.info( 'Sending message to the Telegram API has been dropped intentionally' );
+          break;
+        default:
+          logger.info( 'A message has been send to Telegram feed' );
       }
     } catch ( error ) {
       logger.error( `Sending message to Telegram Feed failed!\n' + ${error}` );

src/extensions/telegram-bot.ts

@@ -11,7 +11,22 @@ const botConfig = {
 
 const bot = new TelegramBot( environment.telegram_bot_token, botConfig );
 
+const ignorePattern = /--telegram-ignore/gi;
+
 async function sendMessage( msg: Message ): Promise< number > {
+  // evaluate if message should be send
+  let discordMessage = msg.cleanContent;
+  if ( discordMessage.match( ignorePattern ) ) {
+    const splittedMessages = discordMessage.split( ignorePattern );
+    if ( splittedMessages.length > 1 ) {
+      if ( splittedMessages[ 0 ] === '' ) {
+        // message is intended to be ignored
+        return -2;
+      }
+      discordMessage = splittedMessages[ 0 ].trim();
+      msg.react( '🔉' );
+    }
+  }
   // there is no i18n usage here because of only german recipients
   const formattedDate = msg.createdAt
     .toLocaleString(
@@ -28,7 +43,7 @@ async function sendMessage( msg: Message ): Promise< number > {
   const channelName = msg.guild?.channels.cache.get( msg.channel.id )?.name;
   const completeMessage = `Eine neue Anfrage wurde auf dem Discord Server im "${channelName}"-Channel registriert:\n\n`
     + `Nickname: ${msg.author.username}\nUser: ${msg.author.tag}\nID: ${msg.author.id}\nZeitstempel: ${formattedDate} Uhr\n\n`
-    + `Nachricht (${msg.id}):\n\n"${msg.cleanContent}"\n\n`
+    + `Nachricht (${msg.id}):\n\n"${discordMessage}"\n\n`
     + `Folge dem Link, um direkt zur Nachricht zu gelangen:\n${msg.url}`;
   try {
     bot.sendMessage(