Add preconditions

[KagChi]

Before the command executed, preconditon will run first

[Blad3Mak3r]

You can use interceptors when you initialize the client.

Client code

SlashCommandClient.builder("bot.huge.packages.commands")
    .addSlashInterceptor(object : SlashCommandInterceptor {
        override suspend fun intercept(ctx: SlashCommandContext): Boolean {
            if (!ctx.function.hasAnnotation<RequireBetaAccess>())
                return true

            if (!ctx.isFromGuild || !ctx.guildData.hasBetaAccess()) {
                ctx.located(EmojiUtils.NoEntry, "interceptors.requireBetaAccess").setEphemeral(true).queue()
                return false
            }

            return true
        }
    }
    .addSlashInterceptor { SlashInterceptors.requireVoiceConnected(it) }
    .enableMetrics()
    .setRateLimitClient(redis.slashRateLimitClient)
    .withTimeout(5.minutes)
    .buildWith(shardManager)

Command code

@RequireBetaAccess
@OnSlashCommand(name = "commandname", target = InteractionTarget.GUILD)
suspend fun command(ctx: GuildSlashCommandContext) {
    // Your command code
}

Annotation code

@Retention(AnnotationRetention.RUNTIME)
@Target(AnnotationTarget.FUNCTION)
annotation class RequireBetaAccess()

The code shown is a small part of HUGE.