From bcf3b2e8a09794832aa915dda2695a7fa49edbf8 Mon Sep 17 00:00:00 2001
From: Dmytro Vakulenko <dmytro.vakulenko@masterofcode.com>
Date: Fri, 2 Dec 2022 15:15:25 +0200
Subject: [PATCH] feat(UABOT-88): hide join and leave messages

---
 src/bot.ts                                  |  7 ++++++
 src/bot/commands/public/settings.command.ts |  2 ++
 src/bot/composers/index.ts                  |  1 +
 src/bot/composers/join-leave.composer.ts    | 26 +++++++++++++++++++++
 src/message.ts                              |  9 ++++++-
 src/types/session.ts                        |  1 +
 6 files changed, 45 insertions(+), 1 deletion(-)
 create mode 100644 src/bot/composers/join-leave.composer.ts

diff --git a/src/bot.ts b/src/bot.ts
index 5db86e67..388a68f2 100644
--- a/src/bot.ts
+++ b/src/bot.ts
@@ -13,6 +13,7 @@ import {
   getBeforeAnyComposer,
   getCreatorCommandsComposer,
   getHealthCheckComposer,
+  getJoinLeaveComposer,
   getMessagesComposer,
   getPrivateCommandsComposer,
   getPublicCommandsComposer,
@@ -134,6 +135,9 @@ const rootMenu = new Menu<GrammyMenuContext>('root');
     updateMethod: swindlersGoogleService.appendTrainingPositives.bind(swindlersGoogleService),
   });
 
+  // Join and leave composer
+  const { joinLeaveComposer } = getJoinLeaveComposer();
+
   // Tensor testing old logic
   const { tensorTrainingComposer } = getTensorTrainingComposer({
     tensorListener,
@@ -204,6 +208,9 @@ const rootMenu = new Menu<GrammyMenuContext>('root');
   bot.use(swindlerBotsSaveToSheetComposer);
   bot.use(swindlerHelpSaveToSheetComposer);
 
+  // Join and leave composer
+  bot.use(joinLeaveComposer);
+
   // Tensor testing old logic
   bot.use(tensorTrainingComposer);
 
diff --git a/src/bot/commands/public/settings.command.ts b/src/bot/commands/public/settings.command.ts
index cb98dfbf..22b66fe3 100644
--- a/src/bot/commands/public/settings.command.ts
+++ b/src/bot/commands/public/settings.command.ts
@@ -6,6 +6,7 @@ import {
   deleteForwardedButton,
   deleteMentionButton,
   deleteMessageButton,
+  deleteServiceMessageButton,
   deleteSwindlerButton,
   deleteTensorButton,
   deleteUrlsButton,
@@ -90,6 +91,7 @@ export class SettingsCommand {
       .row()
       .text(deleteMentionButton, (context) => toggleSetting(context, 'enableDeleteMentions'))
       .text(deleteForwardedButton, (context) => toggleSetting(context, 'enableDeleteForwards'))
+      .text(deleteServiceMessageButton, (context) => toggleSetting(context, 'disableDeleteServiceMessage'))
       .row()
       .text(airAlarmAlertButton, isAlarmNow, async (context) => {
         // eslint-disable-next-line @typescript-eslint/ban-ts-comment
diff --git a/src/bot/composers/index.ts b/src/bot/composers/index.ts
index e461a340..e9ed5fda 100644
--- a/src/bot/composers/index.ts
+++ b/src/bot/composers/index.ts
@@ -1,6 +1,7 @@
 export * from './before-any.composer';
 export * from './creator-command.composer';
 export * from './health-check.composer';
+export * from './join-leave.composer';
 export * from './messages.composer';
 export * from './private-command.composer';
 export * from './public-command.composer';
diff --git a/src/bot/composers/join-leave.composer.ts b/src/bot/composers/join-leave.composer.ts
new file mode 100644
index 00000000..4e441bcc
--- /dev/null
+++ b/src/bot/composers/join-leave.composer.ts
@@ -0,0 +1,26 @@
+import { Composer } from 'grammy';
+
+import type { GrammyContext } from '../../types';
+import { onlyNotDeletedFilter } from '../filters';
+
+/**
+ * @description Remove join and leave messages from chat
+ * */
+export const getJoinLeaveComposer = () => {
+  const joinLeaveComposer = new Composer<GrammyContext>();
+
+  joinLeaveComposer
+    // Filter that feature is enabled
+    .filter((context) => !context.chatSession.chatSettings.disableDeleteServiceMessage)
+    // Filter if the message is already deleted
+    .filter((context) => onlyNotDeletedFilter(context))
+    // Queries to filter
+    .on([':new_chat_members', ':left_chat_member'])
+    // Delete message
+    .use(async (context, next) => {
+      await context.deleteMessage();
+      return next();
+    });
+
+  return { joinLeaveComposer };
+};
diff --git a/src/message.ts b/src/message.ts
index 21dfd51c..df3d5fc0 100644
--- a/src/message.ts
+++ b/src/message.ts
@@ -146,6 +146,11 @@ export const getSettingsMenuMessage = (settings: ChatSessionData['chatSettings']
 
 ⚓ ${settings.enableDeleteMentions ? '✅ Бот видаляє повідомлення зі @ згадуваннями.' : '⛔ Бот не видаляє повідомлення зі @ згадуваннями.'}
 ↩️ ${settings.enableDeleteForwards ? '✅ Бот видаляє повідомлення з пересиланнями.' : '⛔ Бот не видаляє повідомлення з пересиланнями.'}
+✋ ${
+    settings.disableDeleteServiceMessage
+      ? '⛔ Бот не видаляє повідомлення приєдання та прощання.'
+      : '✅ Бот видаляє повідомлення приєдання та прощання.'
+  }
 
 <b>Налаштування повітряної тривоги.</b>
 🏰 ${
@@ -231,6 +236,7 @@ export const deleteUrlsButton = '🔗 Посилання';
 
 export const deleteMentionButton = '⚓ Згадування';
 export const deleteForwardedButton = '↩️ Пересилання';
+export const deleteServiceMessageButton = '✋ Приєднання';
 
 export const airAlarmAlertButton = '🏰 Регіон';
 export const airAlarmNotificationMessage = '📢 Тривога';
@@ -244,10 +250,11 @@ export const englishDeleteMessageButton = '❗ Reason';
 export const englishDeleteSwindlerButton = '💰 Scam';
 
 export const englishDeleteCardsButton = '💳 Cards';
-
 export const englishDeleteUrlsButton = '🔗 Link';
+
 export const englishDeleteMentionButton = '⚓ Mention';
 export const englishDeleteForwardedButton = '↩️ Forward';
+export const englishDeleteServiceMessageButton = '✋ Join';
 
 export const englishAirAlarmAlertButton = '🏰 Region';
 export const englishAirAlarmNotificationMessage = '📢 Alarm';
diff --git a/src/types/session.ts b/src/types/session.ts
index 834615c6..32273d47 100644
--- a/src/types/session.ts
+++ b/src/types/session.ts
@@ -42,6 +42,7 @@ export interface DefaultChatSettings {
   disableStrategicInfo?: boolean;
   disableDeleteMessage?: boolean;
   disableSwindlerMessage?: boolean;
+  disableDeleteServiceMessage?: boolean;
 }
 
 export interface OptionalChatSettings {