use interactions instead of chat commands

src/commands/delete.rs

@@ -1,43 +1,84 @@
 use std::{env, error::Error, num::NonZeroU64, time::Duration};
 use tokio::time::sleep;
-use tracing::info;
-use twilight_model::{channel::Message, id::Id};
+use tracing::{debug, info};
+use twilight_model::{
+    application::interaction::Interaction,
+    channel::message::MessageFlags,
+    http::interaction::{InteractionResponse, InteractionResponseType},
+    id::Id,
+};
+use twilight_util::builder::InteractionResponseDataBuilder;
 
 use crate::state::State;
 
 pub(crate) async fn delete(
-    msg: Message,
+    interaction: Interaction,
     state: State,
+    count: i64,
 ) -> Result<(), Box<dyn Error + Send + Sync + 'static>> {
+    debug!(
+        "delete command in guild {:?} in channel {:?} by {:?}",
+        interaction.guild_id,
+        interaction.channel,
+        interaction.author(),
+    );
+
     let admin = env::var("ADMIN")?.parse::<u64>()?;
-    if msg.author.id != Id::from(NonZeroU64::new(admin).unwrap()) {
+    if interaction.author_id() != Some(Id::from(NonZeroU64::new(admin).unwrap())) {
+        let interaction_response_data = InteractionResponseDataBuilder::new()
+            .content("You do not have permissions to delete messages.")
+            .flags(MessageFlags::EPHEMERAL)
+            .build();
+
+        let response = InteractionResponse {
+            kind: InteractionResponseType::ChannelMessageWithSource,
+            data: Some(interaction_response_data),
+        };
+
+        state
+            .http
+            .interaction(interaction.application_id)
+            .create_response(interaction.id, &interaction.token, &response)
+            .await?;
+
         return Ok(());
     }
-    let n = msg
-        .content
-        .split(' ')
-        .last()
-        .unwrap()
-        .parse::<u16>()
-        .unwrap_or(1);
-    if n > 100 {
+    let Some(channel) = interaction.channel else {
         return Ok(());
-    }
+    };
+    let Some(message_id) = channel.last_message_id else {
+        return Ok(());
+    };
+
+    let count = count.max(1).min(100) as u16;
+
+    let interaction_response_data = InteractionResponseDataBuilder::new()
+        .content(format!("Deleting {count} messages."))
+        .flags(MessageFlags::EPHEMERAL)
+        .build();
+
+    let response = InteractionResponse {
+        kind: InteractionResponseType::ChannelMessageWithSource,
+        data: Some(interaction_response_data),
+    };
+
+    state
+        .http
+        .interaction(interaction.application_id)
+        .create_response(interaction.id, &interaction.token, &response)
+        .await?;
+
     let messages = state
         .http
-        .channel_messages(msg.channel_id)
-        .before(msg.id)
-        .limit(n)?
+        .channel_messages(channel.id)
+        .before(message_id.cast())
+        .limit(count)?
         .await?
         .model()
         .await?;
-    state.http.delete_message(msg.channel_id, msg.id).await?;
     for message in messages {
-        info!("Delete message: {:?}: {:?}", message.author.name, message);
-        state
-            .http
-            .delete_message(msg.channel_id, message.id)
-            .await?;
+        debug!("Delete message: {:?}: {:?}", message.author.name, message);
+        state.http.delete_message(channel.id, message.id).await?;
         sleep(Duration::from_secs(5)).await;
     }
     Ok(())

src/commands/join.rs

@@ -1,34 +1,81 @@
-use std::{error::Error, num::NonZeroU64};
-use twilight_model::channel::Message;
-
 use crate::state::State;
+use std::error::Error;
+use tracing::debug;
+use twilight_model::{
+    application::interaction::Interaction,
+    channel::message::MessageFlags,
+    http::interaction::{InteractionResponse, InteractionResponseType},
+    id::{
+        marker::{GuildMarker, UserMarker},
+        Id,
+    },
+};
+use twilight_util::builder::InteractionResponseDataBuilder;
 
-pub(crate) async fn join(
-    msg: Message,
+pub(crate) async fn join_channel(
     state: State,
+    guild_id: Id<GuildMarker>,
+    user_id: Id<UserMarker>,
 ) -> Result<(), Box<dyn Error + Send + Sync + 'static>> {
-    let guild_id = msg.guild_id.ok_or("No guild id attached to the message.")?;
-    let user_id = msg.author.id;
+    debug!("join user {:?} in guild {:?}", user_id, guild_id);
+
     let channel_id = state
         .cache
         .voice_state(user_id, guild_id)
         .ok_or("Cannot get voice state for user")?
         .channel_id();
-    let channel_id =
-        NonZeroU64::new(channel_id.into()).ok_or("Joined voice channel must have nonzero ID.")?;
 
     // join the voice channel
     state
         .songbird
-        .join(guild_id, channel_id)
+        .join(guild_id.cast(), channel_id)
         .await
         .map_err(|e| format!("Could not join voice channel: {:?}", e))?;
 
     // signal that we are not listening
-    if let Some(call_lock) = state.songbird.get(guild_id) {
+    if let Some(call_lock) = state.songbird.get(guild_id.cast()) {
         let mut call = call_lock.lock().await;
         call.deafen(true).await?;
     }
 
     Ok(())
 }
+
+pub(crate) async fn join(
+    interaction: Interaction,
+    state: State,
+) -> Result<(), Box<dyn Error + Send + Sync + 'static>> {
+    debug!(
+        "join command in guild {:?} in channel {:?} by {:?}",
+        interaction.guild_id,
+        interaction.channel,
+        interaction.author(),
+    );
+
+    let Some(guild_id) = interaction.guild_id else {
+        return Ok(());
+    };
+    let Some(author_id) = interaction.author_id() else {
+        return Ok(());
+    };
+
+    join_channel(state.clone(), guild_id, author_id).await?;
+
+    let interaction_response_data = InteractionResponseDataBuilder::new()
+        .content("Bin da Brudi!")
+        .flags(MessageFlags::EPHEMERAL)
+        .build();
+
+    let response = InteractionResponse {
+        kind: InteractionResponseType::ChannelMessageWithSource,
+        data: Some(interaction_response_data),
+    };
+
+    state
+        .http
+        .interaction(interaction.application_id)
+        .create_response(interaction.id, &interaction.token, &response)
+        .await?;
+
+    Ok(())
+}

src/commands/leave.rs

@@ -1,17 +1,21 @@
 use crate::state::State;
 use std::error::Error;
-use twilight_model::channel::Message;
+use twilight_model::application::interaction::Interaction;
 
 pub(crate) async fn leave(
-    msg: Message,
+    interaction: Interaction,
     state: State,
 ) -> Result<(), Box<dyn Error + Send + Sync + 'static>> {
     tracing::debug!(
-        "leave command in channel {} by {}",
-        msg.channel_id,
-        msg.author.name
+        "leave command n guild {:?} in channel {:?} by {:?}",
+        interaction.guild_id,
+        interaction.channel,
+        interaction.author(),
     );
-    let guild_id = msg.guild_id.unwrap();
+
+    let Some(guild_id) = interaction.guild_id else {
+        return Ok(());
+    };
     state.songbird.leave(guild_id).await?;
     Ok(())
 }

src/commands/mod.rs

@@ -23,7 +23,7 @@ mod delete;
 pub(crate) use delete::delete;
 
 use twilight_model::application::command::CommandType;
-use twilight_util::builder::command::{CommandBuilder, StringBuilder};
+use twilight_util::builder::command::{CommandBuilder, IntegerBuilder, StringBuilder};
 
 pub(crate) fn get_chat_commands() -> Vec<twilight_model::application::command::Command> {
     vec![
@@ -36,5 +36,8 @@ pub(crate) fn get_chat_commands() -> Vec<twilight_model::application::command::C
         CommandBuilder::new("queue", "Print track queue", CommandType::ChatInput).build(),
         CommandBuilder::new("resume", "Resume playing", CommandType::ChatInput).build(),
         CommandBuilder::new("stop", "Stop playing", CommandType::ChatInput).build(),
+        CommandBuilder::new("delete", "Delete messages in chat", CommandType::ChatInput)
+            .option(IntegerBuilder::new("count", "How many messages to delete").required(true))
+            .build(),
     ]
 }

src/commands/pause.rs

@@ -1,28 +1,46 @@
 use crate::state::State;
 use std::error::Error;
-use twilight_model::channel::Message;
+use twilight_model::{
+    application::interaction::Interaction,
+    channel::message::MessageFlags,
+    http::interaction::{InteractionResponse, InteractionResponseType},
+};
+use twilight_util::builder::InteractionResponseDataBuilder;
 
 pub(crate) async fn pause(
-    msg: Message,
+    interaction: Interaction,
     state: State,
 ) -> Result<(), Box<dyn Error + Send + Sync + 'static>> {
     tracing::debug!(
-        "pause command in channel {} by {}",
-        msg.channel_id,
-        msg.author.name
+        "pause command in guild {:?} in channel {:?} by {:?}",
+        interaction.guild_id,
+        interaction.channel,
+        interaction.author(),
     );
 
-    let guild_id = msg.guild_id.unwrap();
+    let Some(guild_id) = interaction.guild_id else {
+        return Ok(());
+    };
 
     if let Some(call_lock) = state.songbird.get(guild_id) {
         let call = call_lock.lock().await;
         call.queue().pause()?;
     }
 
+    let interaction_response_data = InteractionResponseDataBuilder::new()
+        .content("Paused the track")
+        .flags(MessageFlags::EPHEMERAL)
+        .build();
+
+    let response = InteractionResponse {
+        kind: InteractionResponseType::ChannelMessageWithSource,
+        data: Some(interaction_response_data),
+    };
+
     state
         .http
-        .create_message(msg.channel_id)
-        .content("Paused the track")?
+        .interaction(interaction.application_id)
+        .create_response(interaction.id, &interaction.token, &response)
         .await?;
 
     Ok(())

src/commands/play.rs

@@ -1,4 +1,4 @@
-use crate::commands::join;
+use crate::commands::join::join_channel;
 use crate::metadata::{Metadata, MetadataMap};
 use crate::state::State;
 use serde_json::Value;
@@ -7,23 +7,31 @@ use std::io::{BufRead, BufReader};
 use std::{error::Error, ops::Sub, time::Duration};
 use tokio::process::Command;
 use tracing::debug;
-use twilight_model::channel::Message;
+use twilight_model::application::interaction::Interaction;
+use twilight_model::channel::message::MessageFlags;
+use twilight_model::http::interaction::{InteractionResponse, InteractionResponseType};
+use twilight_util::builder::InteractionResponseDataBuilder;
 use url::Url;
 
 pub(crate) async fn play(
-    msg: Message,
+    interaction: Interaction,
     state: State,
     query: String,
 ) -> Result<(), Box<dyn Error + Send + Sync + 'static>> {
-    tracing::debug!(
-        "play command in channel {} by {}",
-        msg.channel_id,
-        msg.author.name
+    debug!(
+        "play command in channel {:?} by {:?}",
+        interaction.channel,
+        interaction.author(),
     );
 
-    join(msg.clone(), state.clone()).await?;
+    let Some(user_id) = interaction.author_id() else {
+        return Ok(());
+    };
+    let Some(guild_id) = interaction.guild_id else {
+        return Ok(());
+    };
 
-    let guild_id = msg.guild_id.unwrap();
+    join_channel(state.clone(), guild_id, user_id).await?;
 
     // handle keyword queries
     let query = if Url::parse(&query).is_err() {
@@ -32,6 +40,24 @@ pub(crate) async fn play(
         query
     };
 
+    debug!("query: {:?}", query);
+
+    let interaction_response_data = InteractionResponseDataBuilder::new()
+        .content("Adding tracks to the queue ...")
+        .flags(MessageFlags::EPHEMERAL)
+        .build();
+
+    let response = InteractionResponse {
+        kind: InteractionResponseType::ChannelMessageWithSource,
+        data: Some(interaction_response_data),
+    };
+
+    state
+        .http
+        .interaction(interaction.application_id)
+        .create_response(interaction.id, &interaction.token, &response)
+        .await?;
+
     // handle playlist links
     let urls = if query.contains("list=") {
         get_playlist_urls(query).await?
@@ -62,12 +88,6 @@ pub(crate) async fn play(
                     duration: metadata.duration,
                 });
             }
-        } else {
-            state
-                .http
-                .create_message(msg.channel_id)
-                .content("Cannot find any results")?
-                .await?;
         }
     }
 

src/commands/queue.rs

@@ -1,18 +1,26 @@
+use twilight_model::http::interaction::InteractionResponseType;
+use twilight_model::{
+    application::interaction::Interaction, channel::message::MessageFlags,
+    http::interaction::InteractionResponse,
+};
+use twilight_util::builder::InteractionResponseDataBuilder;
+
 use crate::{metadata::MetadataMap, state::State};
 use std::error::Error;
-use twilight_model::channel::Message;
 
 pub(crate) async fn queue(
-    msg: Message,
+    interaction: Interaction,
     state: State,
 ) -> Result<(), Box<dyn Error + Send + Sync + 'static>> {
     tracing::debug!(
-        "queue command in channel {} by {}",
-        msg.channel_id,
-        msg.author.name
+        "queue command in guild {:?} in channel {:?} by {:?}",
+        interaction.guild_id,
+        interaction.channel,
+        interaction.author(),
     );
-    let guild_id = msg.guild_id.unwrap();
-
+    let Some(guild_id) = interaction.guild_id else {
+        return Ok(());
+    };
     if let Some(call_lock) = state.songbird.get(guild_id) {
         let call = call_lock.lock().await;
         let queue = call.queue().current_queue();
@@ -48,10 +56,21 @@ pub(crate) async fn queue(
             }
             message.push_str("`\n");
         }
+
+        let interaction_response_data = InteractionResponseDataBuilder::new()
+            .content(&message)
+            .flags(MessageFlags::EPHEMERAL)
+            .build();
+
+        let response = InteractionResponse {
+            kind: InteractionResponseType::ChannelMessageWithSource,
+            data: Some(interaction_response_data),
+        };
+
         state
             .http
-            .create_message(msg.channel_id)
-            .content(&message)?
+            .interaction(interaction.application_id)
+            .create_response(interaction.id, &interaction.token, &response)
             .await?;
     }
     Ok(())

src/commands/resume.rs

@@ -1,28 +1,45 @@
 use crate::state::State;
 use std::error::Error;
-use twilight_model::channel::Message;
+use twilight_model::{
+    application::interaction::Interaction,
+    channel::message::MessageFlags,
+    http::interaction::{InteractionResponse, InteractionResponseType},
+};
+use twilight_util::builder::InteractionResponseDataBuilder;
 
 pub(crate) async fn resume(
-    msg: Message,
+    interaction: Interaction,
     state: State,
 ) -> Result<(), Box<dyn Error + Send + Sync + 'static>> {
     tracing::debug!(
-        "resume command in channel {} by {}",
-        msg.channel_id,
-        msg.author.name
+        "resume command in guild {:?} in channel {:?} by {:?}",
+        interaction.guild_id,
+        interaction.channel,
+        interaction.author(),
     );
 
-    let guild_id = msg.guild_id.unwrap();
-
+    let Some(guild_id) = interaction.guild_id else {
+        return Ok(());
+    };
     if let Some(call_lock) = state.songbird.get(guild_id) {
         let call = call_lock.lock().await;
         call.queue().resume()?;
     }
 
+    let interaction_response_data = InteractionResponseDataBuilder::new()
+        .content("Resumed the track")
+        .flags(MessageFlags::EPHEMERAL)
+        .build();
+
+    let response = InteractionResponse {
+        kind: InteractionResponseType::ChannelMessageWithSource,
+        data: Some(interaction_response_data),
+    };
+
     state
         .http
-        .create_message(msg.channel_id)
-        .content("Resumed the track")?
+        .interaction(interaction.application_id)
+        .create_response(interaction.id, &interaction.token, &response)
         .await?;
 
     Ok(())

src/commands/stop.rs

@@ -1,28 +1,47 @@
+use twilight_model::{
+    application::interaction::Interaction,
+    channel::message::MessageFlags,
+    http::interaction::{InteractionResponse, InteractionResponseType},
+};
+use twilight_util::builder::InteractionResponseDataBuilder;
+
 use crate::state::State;
 use std::error::Error;
-use twilight_model::channel::Message;
 
 pub(crate) async fn stop(
-    msg: Message,
+    interaction: Interaction,
     state: State,
 ) -> Result<(), Box<dyn Error + Send + Sync + 'static>> {
     tracing::debug!(
-        "stop command in channel {} by {}",
-        msg.channel_id,
-        msg.author.name
+        "stop command in guild {:?} in channel {:?} by {:?}",
+        interaction.guild_id,
+        interaction.channel,
+        interaction.author(),
     );
 
-    let guild_id = msg.guild_id.unwrap();
+    let Some(guild_id) = interaction.guild_id else {
+        return Ok(());
+    };
 
     if let Some(call_lock) = state.songbird.get(guild_id) {
         let call = call_lock.lock().await;
         call.queue().stop();
     }
 
+    let interaction_response_data = InteractionResponseDataBuilder::new()
+        .content("Stopped the track and cleared the queue")
+        .flags(MessageFlags::EPHEMERAL)
+        .build();
+
+    let response = InteractionResponse {
+        kind: InteractionResponseType::ChannelMessageWithSource,
+        data: Some(interaction_response_data),
+    };
+
     state
         .http
-        .create_message(msg.channel_id)
-        .content("Stopped the track and cleared the queue")?
+        .interaction(interaction.application_id)
+        .create_response(interaction.id, &interaction.token, &response)
         .await?;
 
     Ok(())

src/handler.rs

@@ -4,47 +4,25 @@ use crate::state::State;
 use futures::Future;
 use std::error::Error;
 use std::sync::Arc;
+use tracing::debug;
+use twilight_model::application::interaction::application_command::CommandOptionValue;
+use twilight_model::application::interaction::{Interaction, InteractionData};
 
 use twilight_gateway::Event;
-use twilight_model::channel::Message;
 
-enum ChatCommand {
-    Play(Message, String),
-    Stop(Message),
-    Pause(Message),
-    Resume(Message),
-    Leave(Message),
-    Join(Message),
-    Queue(Message),
-    Delete(Message),
+#[derive(Debug)]
+enum InteractionCommand {
+    Play(Interaction, String),
+    Stop(Interaction),
+    Pause(Interaction),
+    Resume(Interaction),
+    Leave(Interaction),
+    Join(Interaction),
+    Queue(Interaction),
+    Delete(Interaction, i64),
     NotImplemented,
 }
 
-fn parse_command(event: Event) -> Option<ChatCommand> {
-    match event {
-        Event::MessageCreate(msg_create) => {
-            if msg_create.guild_id.is_none() || !msg_create.content.starts_with('!') {
-                return None;
-            }
-            let split: Vec<&str> = msg_create.content.splitn(2, ' ').collect();
-            match split.as_slice() {
-                ["!play", query] => {
-                    Some(ChatCommand::Play(msg_create.0.clone(), query.to_string()))
-                }
-                ["!stop"] | ["!stop", _] => Some(ChatCommand::Stop(msg_create.0)),
-                ["!pause"] | ["!pause", _] => Some(ChatCommand::Pause(msg_create.0)),
-                ["!resume"] | ["!resume", _] => Some(ChatCommand::Resume(msg_create.0)),
-                ["!leave"] | ["!leave", _] => Some(ChatCommand::Leave(msg_create.0)),
-                ["!join"] | ["!join", _] => Some(ChatCommand::Join(msg_create.0)),
-                ["!queue"] | ["!queue", _] => Some(ChatCommand::Queue(msg_create.0)),
-                ["!delete"] | ["!delete", _] => Some(ChatCommand::Delete(msg_create.0)),
-                _ => Some(ChatCommand::NotImplemented),
-            }
-        }
-        _ => None,
-    }
-}
-
 fn spawn(
     fut: impl Future<Output = Result<(), Box<dyn Error + Send + Sync + 'static>>> + Send + 'static,
 ) {
@@ -63,17 +41,84 @@ impl Handler {
     pub(crate) fn new(state: State) -> Self {
         Self { state }
     }
-    pub(crate) async fn act(&mut self, event: Event) {
-        match parse_command(event) {
-            Some(ChatCommand::Play(msg, query)) => spawn(play(msg, Arc::clone(&self.state), query)),
-            Some(ChatCommand::Stop(msg)) => spawn(stop(msg, Arc::clone(&self.state))),
-            Some(ChatCommand::Pause(msg)) => spawn(pause(msg, Arc::clone(&self.state))),
-            Some(ChatCommand::Resume(msg)) => spawn(resume(msg, Arc::clone(&self.state))),
-            Some(ChatCommand::Leave(msg)) => spawn(leave(msg, Arc::clone(&self.state))),
-            Some(ChatCommand::Join(msg)) => spawn(join(msg, Arc::clone(&self.state))),
-            Some(ChatCommand::Queue(msg)) => spawn(queue(msg, Arc::clone(&self.state))),
-            Some(ChatCommand::Delete(msg)) => spawn(delete(msg, Arc::clone(&self.state))),
+    pub(crate) async fn act(&self, event: Event) {
+        let interaction_command = match event {
+            Event::InteractionCreate(interaction) => {
+                debug!("interaction: {:?}", &interaction);
+                match &interaction.data {
+                    Some(InteractionData::ApplicationCommand(command)) => {
+                        debug!("command: {:?}", command);
+                        match command.name.as_str() {
+                            "play" => {
+                                if let Some(query_option) =
+                                    command.options.iter().find(|opt| opt.name == "query")
+                                {
+                                    if let CommandOptionValue::String(query) = &query_option.value {
+                                        InteractionCommand::Play(
+                                            interaction.0.clone(),
+                                            query.clone(),
+                                        )
+                                    } else {
+                                        InteractionCommand::NotImplemented
+                                    }
+                                } else {
+                                    InteractionCommand::NotImplemented
+                                }
+                            }
+                            "stop" => InteractionCommand::Stop(interaction.0.clone()),
+                            "pause" => InteractionCommand::Pause(interaction.0.clone()),
+                            "resume" => InteractionCommand::Resume(interaction.0.clone()),
+                            "leave" => InteractionCommand::Leave(interaction.0.clone()),
+                            "join" => InteractionCommand::Join(interaction.0.clone()),
+                            "queue" => InteractionCommand::Queue(interaction.0.clone()),
+                            "delete" => {
+                                if let Some(count_option) =
+                                    command.options.iter().find(|opt| opt.name == "count")
+                                {
+                                    if let CommandOptionValue::Integer(count) = count_option.value {
+                                        InteractionCommand::Delete(interaction.0.clone(), count)
+                                    } else {
+                                        InteractionCommand::NotImplemented
+                                    }
+                                } else {
+                                    InteractionCommand::NotImplemented
+                                }
+                            }
+                            _ => InteractionCommand::NotImplemented,
+                        }
+                    }
+                    _ => InteractionCommand::NotImplemented,
+                }
+            }
+            _ => InteractionCommand::NotImplemented,
+        };
+        debug!("{:?}", interaction_command);
+        match interaction_command {
+            InteractionCommand::Play(interaction, query) => {
+                spawn(play(interaction, Arc::clone(&self.state), query))
+            }
+            InteractionCommand::Stop(interaction) => {
+                spawn(stop(interaction, Arc::clone(&self.state)))
+            }
+            InteractionCommand::Pause(interaction) => {
+                spawn(pause(interaction, Arc::clone(&self.state)))
+            }
+            InteractionCommand::Resume(interaction) => {
+                spawn(resume(interaction, Arc::clone(&self.state)))
+            }
+            InteractionCommand::Leave(interaction) => {
+                spawn(leave(interaction, Arc::clone(&self.state)))
+            }
+            InteractionCommand::Join(interaction) => {
+                spawn(join(interaction, Arc::clone(&self.state)))
+            }
+            InteractionCommand::Queue(interaction) => {
+                spawn(queue(interaction, Arc::clone(&self.state)))
+            }
+            InteractionCommand::Delete(interaction, count) => {
+                spawn(delete(interaction, Arc::clone(&self.state), count))
+            }
             _ => {}
-        }
+        };
     }
 }

src/main.rs

@@ -82,7 +82,7 @@ async fn main() -> Result<(), Box<dyn Error + Send + Sync + 'static>> {
 
     info!("Ready to receive events");
 
-    let mut handler = Handler::new(Arc::clone(&state));
+    let handler = Handler::new(Arc::clone(&state));
     let mut stop_rx = signal_handler();
     let mut stream = ShardEventStream::new(shards.iter_mut());
     loop {