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43 lines
1.1 KiB
Rust
43 lines
1.1 KiB
Rust
use std::collections::VecDeque;
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use rand::Rng;
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use serenity::client::Context;
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use serenity::framework::standard::{CommandError, CommandResult};
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use serenity::framework::standard::macros::command;
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use serenity::model::channel::Message;
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#[command]
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#[only_in(guilds)]
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#[description("Shuffles the queue")]
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#[usage("shuffle")]
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#[aliases("sh")]
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async fn shuffle(ctx: &Context, msg: &Message) -> CommandResult {
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let guild = msg.guild(&ctx.cache).await.unwrap();
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let manager = songbird::get(ctx)
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.await
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.expect("Songbird Voice client placed in at initialisation.")
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.clone();
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let handler_lock = manager
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.get(guild.id)
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.ok_or(CommandError::from("Not in a voice channel"))?;
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let handler = handler_lock.lock().await;
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handler.queue().modify_queue(shuffle_vec_deque);
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msg.channel_id
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.say(ctx, "The queue has been shuffled")
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.await?;
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Ok(())
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}
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/// Fisher-Yates shuffle for VecDeque
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fn shuffle_vec_deque<T>(deque: &mut VecDeque<T>) {
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let mut rng = rand::thread_rng();
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let mut i = deque.len();
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while i >= 2 {
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i -= 1;
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deque.swap(i, rng.gen_range(0..i + 1))
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}
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}
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