62 lines
2.8 KiB
Kotlin
62 lines
2.8 KiB
Kotlin
package moe.kageru.kagebot.features
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import arrow.core.Either
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import arrow.core.filterOrElse
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import arrow.core.flatMap
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import arrow.core.rightIfNotNull
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import com.fasterxml.jackson.annotation.JsonProperty
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import moe.kageru.kagebot.Log
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import moe.kageru.kagebot.Util.asOption
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import moe.kageru.kagebot.config.Config
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import moe.kageru.kagebot.extensions.categoriesByName
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import moe.kageru.kagebot.persistence.Dao
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import org.javacord.api.DiscordApi
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import org.javacord.api.entity.channel.ChannelCategory
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import org.javacord.api.entity.channel.ServerVoiceChannel
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import org.javacord.api.event.message.MessageCreateEvent
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class TempVCFeature(@JsonProperty("category") category: String? = null) : EventFeature, MessageFeature {
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private val category: ChannelCategory? = category?.let { Config.server.categoriesByName(it).first() }
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override fun handle(message: MessageCreateEvent): Unit = with(message) {
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Either.cond(' ' in readableMessageContent,
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{ readableMessageContent.split(' ', limit = 2).last() },
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{ "Invalid syntax, expected `<command> <userlimit>`" })
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.flatMap { limit ->
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limit.toIntOrNull().rightIfNotNull { "Invalid syntax, expected a number as limit, got $limit" }
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}.filterOrElse({ it < 99 }, { "Error: can’t create a channel with that many users." })
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.fold({ err -> channel.sendMessage(err) },
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{ limit ->
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createChannel(message, limit)
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channel.sendMessage("Done")
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})
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}
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override fun register(api: DiscordApi) {
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api.addServerVoiceChannelMemberLeaveListener { event ->
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if (event.channel.connectedUsers.isEmpty() && Dao.isTemporaryVC(event.channel.idAsString)) {
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deleteChannel(event.channel)
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}
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}
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}
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private fun deleteChannel(channel: ServerVoiceChannel) =
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channel.delete("Empty temporary channel").asOption().fold(
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{ Log.warn("Attempted to delete temporary VC without the necessary permissions") },
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{ Dao.removeTemporaryVC(channel.idAsString) }
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)
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private fun createChannel(message: MessageCreateEvent, limit: Int): Unit =
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Config.server.createVoiceChannelBuilder().apply {
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setUserlimit(limit)
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setName(generateChannelName(message))
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setAuditLogReason("Created temporary VC for user ${message.messageAuthor.discriminatedName}")
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setCategory(category)
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}.create().asOption().fold(
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{ Log.warn("Attempted to create temporary VC without the necessary permissions") },
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{ channel -> Dao.addTemporaryVC(channel.idAsString) })
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private fun generateChannelName(message: MessageCreateEvent): String =
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"${message.messageAuthor.name}’s volatile corner"
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}
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