Merge pull request #286 from Nik-mmzd/chatmemberupdated

Add MemberUpdatedWatcherBot example utilizing new 18.0.0 extensions

MemberUpdatedWatcherBot/README.md

@@ -0,0 +1,10 @@
+# MemberUpdatedWatcherBot
+
+This bot will watch for some ChatMemberUpdated events using new extensions from 18.0.0
+
+
+## Launch
+
+```bash
+../gradlew run --args="BOT_TOKEN"
+```

MemberUpdatedWatcherBot/build.gradle

@@ -0,0 +1,21 @@
+buildscript {
+    repositories {
+        mavenCentral()
+    }
+
+    dependencies {
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+    }
+}
+
+apply plugin: 'kotlin'
+apply plugin: 'application'
+
+mainClassName="MemberUpdatedWatcherKt"
+
+
+dependencies {
+    implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
+
+    implementation "dev.inmo:tgbotapi:$telegram_bot_api_version"
+}

MemberUpdatedWatcherBot/src/main/kotlin/MemberUpdatedWatcher.kt

@@ -0,0 +1,68 @@
+import dev.inmo.tgbotapi.extensions.api.*
+import dev.inmo.tgbotapi.extensions.api.bot.*
+import dev.inmo.tgbotapi.extensions.api.send.*
+import dev.inmo.tgbotapi.extensions.behaviour_builder.*
+import dev.inmo.tgbotapi.extensions.behaviour_builder.triggers_handling.*
+import dev.inmo.tgbotapi.extensions.behaviour_builder.utils.*
+import dev.inmo.tgbotapi.extensions.utils.*
+import dev.inmo.tgbotapi.types.chat.member.*
+import dev.inmo.tgbotapi.utils.*
+
+
+@OptIn(PreviewFeature::class)
+suspend fun main(args: Array<String>) {
+    val token = args.first()
+
+    val bot = telegramBot(token)
+
+    bot.buildBehaviourWithLongPolling {
+        val me = getMe()
+        val filterSelfUpdates = SimpleFilter<ChatMemberUpdated> {
+            it.newChatMemberState.user.id == me.id
+        }
+
+        onChatMemberJoined(initialFilter = filterSelfUpdates) {
+            println("Bot was added to chat")
+            sendMessage(it.chat.id, "I was added to chat. Please grant me admin permissions to make me able to watch other users' events")
+        }
+
+        onChatMemberGotPromoted(initialFilter = filterSelfUpdates) {
+            println("Bot was granted admin permissions")
+            sendMessage(it.chat.id, "I was promoted to admin. I now can watch other users' events")
+        }
+
+        onChatMemberGotDemoted(initialFilter = filterSelfUpdates) {
+            println("Admin permissions were revoked")
+            sendMessage(it.chat.id, "I'm no longer an admin. Admin permissions are required to watch other users' events")
+        }
+
+        onChatMemberJoined {
+            val member = it.newChatMemberState.user
+            println("${member.firstName} joined the chat: ${it.oldChatMemberState::class.simpleName} => ${it.newChatMemberState::class.simpleName}")
+            sendMessage(it.chat.id, "Welcome ${member.firstName}")
+        }
+
+        onChatMemberLeft {
+            val member = it.newChatMemberState.user
+            println("${member.firstName} left the chat: ${it.oldChatMemberState::class.simpleName} => ${it.newChatMemberState::class.simpleName}")
+            sendMessage(it.chat.id, "Goodbye ${member.firstName}")
+        }
+
+        onChatMemberGotPromoted {
+            val newState = it.newChatMemberState.requireAdministratorChatMember()
+            println("${newState.user.firstName} got promoted to ${newState.customTitle ?: "Admin"}: ${it.oldChatMemberState::class.simpleName} => ${it.newChatMemberState::class.simpleName}")
+            sendMessage(it.chat.id, "${newState.user.firstName} is now an ${newState.customTitle ?: "Admin"}")
+        }
+
+        onChatMemberGotDemoted {
+            val member = it.newChatMemberState.user
+            println("${member.firstName} got demoted: ${it.oldChatMemberState::class.simpleName} => ${it.newChatMemberState::class.simpleName}")
+            sendMessage(it.chat.id, "${member.firstName} is now got demoted back to member")
+        }
+
+        onChatMemberGotPromotionChanged {
+            val member = it.newChatMemberState.requireAdministratorChatMember()
+            println("${member.user.firstName} has the permissions changed: ${it.oldChatMemberState::class.simpleName} => ${it.newChatMemberState::class.simpleName}")
+        }
+    }.join()
+}

settings.gradle

@@ -53,3 +53,5 @@ include ":BusinessConnectionsBot"
 include ":StarTransactionsBot"
 
 include ":CustomBot"
+
+include ":MemberUpdatedWatcherBot"