TelegramBotApiLibraries/resender/src/commonMain/kotlin/MessagesResender.kt
2023-02-12 01:13:59 +06:00

145 lines
6.4 KiB
Kotlin

package dev.inmo.tgbotapi.libraries.resender
import dev.inmo.tgbotapi.bot.TelegramBot
import dev.inmo.tgbotapi.requests.ForwardMessage
import dev.inmo.tgbotapi.requests.send.CopyMessage
import dev.inmo.tgbotapi.requests.send.media.SendMediaGroup
import dev.inmo.tgbotapi.types.ChatIdentifier
import dev.inmo.tgbotapi.types.IdChatIdentifier
import dev.inmo.tgbotapi.types.mediaCountInMediaGroup
import dev.inmo.tgbotapi.types.message.abstracts.ContentMessage
import dev.inmo.tgbotapi.types.message.content.MediaGroupPartContent
class MessagesResender(
private val bot: TelegramBot,
private val cacheChatId: ChatIdentifier
) {
suspend fun resend(
targetChatId: IdChatIdentifier,
messagesInfo: List<MessageMetaInfo>
): List<Pair<MessageMetaInfo, MessageMetaInfo>> {
val messagesWithOrders = messagesInfo.mapIndexed { i, messageInfo -> messageInfo to i }.toMap()
val ordersWithMessagesGroups = messagesInfo.groupBy { it.group }.flatMap { (group, list) ->
if (group == null) {
list.map {
messagesWithOrders.getValue(it) to listOf(it)
}
} else {
listOf(messagesWithOrders.getValue(list.first()) to list)
}
}.sortedBy { it.first }
return ordersWithMessagesGroups.flatMap { (_, contents) ->
val sourceMessagesToSentMessages = mutableListOf<Pair<MessageMetaInfo, MessageMetaInfo>>()
when {
contents.size == 1 -> {
val messageInfo = contents.first()
runCatching {
MessageMetaInfo(
targetChatId,
bot.execute(
CopyMessage(
targetChatId,
fromChatId = messageInfo.chatId,
messageId = messageInfo.messageId
)
)
)
}.onFailure { _ ->
runCatching {
bot.execute(
ForwardMessage(
toChatId = targetChatId,
fromChatId = messageInfo.chatId,
messageId = messageInfo.messageId
)
)
}.onSuccess {
MessageMetaInfo(
targetChatId,
bot.execute(
CopyMessage(
targetChatId,
fromChatId = it.chat.id,
messageId = it.messageId
)
)
)
}
}.getOrNull() ?.let {
sourceMessagesToSentMessages.add(messageInfo to it)
}
}
else -> {
val resultContents = contents.mapNotNull {
it to (
bot.execute(
ForwardMessage(
toChatId = cacheChatId,
fromChatId = it.chatId,
messageId = it.messageId
)
) as? ContentMessage<*> ?: return@mapNotNull null)
}.mapNotNull { (src, forwardedMessage) ->
val forwardedMessageAsMediaPartMessage = forwardedMessage.takeIf {
it.content is MediaGroupPartContent
} ?.let {
it as ContentMessage<MediaGroupPartContent>
}
src to (forwardedMessageAsMediaPartMessage ?: null.also { _ ->
sourceMessagesToSentMessages.add(
src to MessageMetaInfo(
targetChatId,
bot.execute(
CopyMessage(
targetChatId,
fromChatId = forwardedMessage.chat.id,
messageId = forwardedMessage.messageId
)
)
)
)
} ?: return@mapNotNull null)
}
resultContents.singleOrNull() ?.also { (src, it) ->
sourceMessagesToSentMessages.add(
src to MessageMetaInfo(
targetChatId,
bot.execute(
CopyMessage(
targetChatId,
it.chat.id,
it.messageId
)
)
)
)
} ?: resultContents.chunked(mediaCountInMediaGroup.last).forEach {
bot.execute(
SendMediaGroup<MediaGroupPartContent>(
targetChatId,
it.map { it.second.content.toMediaGroupMemberTelegramMedia() }
)
).content.group.mapIndexed { i, partWrapper ->
it.getOrNull(i) ?.let {
sourceMessagesToSentMessages.add(
it.first to MessageMetaInfo(
partWrapper.sourceMessage.chat.id,
partWrapper.sourceMessage.messageId,
partWrapper.sourceMessage.mediaGroupId
)
)
}
}
}
}
}
sourceMessagesToSentMessages.toList()
}
}
}