TelegramBotAPI-examples/HelloBot/src/main/kotlin/HelloBot.kt

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Kotlin
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import dev.inmo.micro_utils.coroutines.subscribeSafelyWithoutExceptions
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import dev.inmo.tgbotapi.extensions.api.chat.get.getChat
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import dev.inmo.tgbotapi.extensions.api.send.reply
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import dev.inmo.tgbotapi.extensions.api.send.sendTextMessage
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import dev.inmo.tgbotapi.extensions.behaviour_builder.telegramBotWithBehaviourAndLongPolling
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import dev.inmo.tgbotapi.extensions.behaviour_builder.triggers_handling.onContentMessage
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import dev.inmo.tgbotapi.extensions.utils.formatting.linkMarkdownV2
import dev.inmo.tgbotapi.extensions.utils.formatting.textMentionMarkdownV2
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import dev.inmo.tgbotapi.types.chat.*
import dev.inmo.tgbotapi.types.chat.GroupChat
import dev.inmo.tgbotapi.types.chat.PrivateChat
import dev.inmo.tgbotapi.types.chat.SupergroupChat
import dev.inmo.tgbotapi.types.message.MarkdownV2
import dev.inmo.tgbotapi.utils.PreviewFeature
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import dev.inmo.tgbotapi.utils.extensions.escapeMarkdownV2Common
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import kotlinx.coroutines.*
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/**
* The main purpose of this bot is just to answer "Oh, hi, " and add user mention here
*/
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@OptIn(PreviewFeature::class)
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suspend fun main(vararg args: String) {
val botToken = args.first()
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telegramBotWithBehaviourAndLongPolling(botToken, CoroutineScope(Dispatchers.IO)) {
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onContentMessage { message ->
val chat = message.chat
if (chat is ChannelChat) {
val answer = "Hi everybody in this channel \"${chat.title}\""
sendTextMessage(chat, answer, MarkdownV2)
return@onContentMessage
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}
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val answerText = "Oh, hi, " + when (chat) {
is User -> "${chat.firstName} ${chat.lastName}".textMentionMarkdownV2(chat.id)
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is PrivateChat -> "${chat.firstName} ${chat.lastName}".textMentionMarkdownV2(chat.id)
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is SupergroupChat -> (chat.username ?.username ?: getChat(chat).inviteLink) ?.let {
chat.title.linkMarkdownV2(it)
} ?: chat.title
is GroupChat -> bot.getChat(chat).inviteLink ?.let {
chat.title.linkMarkdownV2(it)
} ?: chat.title
else -> "Unknown :(".escapeMarkdownV2Common()
}
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reply(
message,
answerText,
MarkdownV2
)
}
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allUpdatesFlow.subscribeSafelyWithoutExceptions(this) { println(it) }
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}.second.join()
}