discord-kagebot/src/main/kotlin/moe/kageru/kagebot/features/HelpFeature.kt

package moe.kageru.kagebot.features

import moe.kageru.kagebot.MessageUtil.sendEmbed
import moe.kageru.kagebot.command.MatchType
import moe.kageru.kagebot.config.Config
import org.javacord.api.event.message.MessageCreateEvent

class HelpFeature : MessageFeature {
    override fun handle(message: MessageCreateEvent) {
        message.channel.sendEmbed {
            addField("Commands:", listCommands(message))
        }
    }
}

private fun listCommands(message: MessageCreateEvent) = Config.commands
    .filter { it.matchType == MatchType.PREFIX && it.isAllowed(message) }
    .joinToString("\n") { it.trigger }