feat: bot now plays songs, started to work on queue system

Cargo.lock

@@ -1338,6 +1338,12 @@ dependencies = [
  "unicase",
 ]
 
+[[package]]
+name = "queues"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1475abae4f8ad4998590fe3acfe20104f0a5d48fc420c817cd2c09c3f56151f0"
+
 [[package]]
 name = "quote"
 version = "1.0.35"
@@ -1561,6 +1567,8 @@ dependencies = [
  "chrono",
  "confy",
  "futures",
+ "once_cell",
+ "queues",
  "reqwest",
  "serde",
  "serde_json",

Cargo.toml

@@ -21,3 +21,5 @@ tracing = "0.1.40"
 tracing-subscriber = "0.3.18"
 tracing-futures = "0.2.5"
 futures = "0.3.1"
+queues = "1"
+once_cell = "1"

src/commands/info.rs

@@ -7,9 +7,9 @@ pub async fn run(_ctx: &Context, command: &CommandInteraction) -> CreateEmbed {
     let username = command.user.name.as_str();
 
     Embed::create(
-		username,
 		"",
-		"Botendo v7\ndeveloped by [moonleay](https://moonleay.net)\n\nCheck out the repository: https://git.moonleay.net/DiscordBots/Rustendo",
+		"Botendo v7",
+		"developed by [moonleay](https://moonleay.net)\n\nCheck out the repository: https://git.moonleay.net/DiscordBots/Rustendo",
 	)
 }
 

src/commands/play.rs

@@ -1,15 +1,15 @@
 use serenity::all::{CommandDataOptionValue, CommandInteraction, Context};
 use serenity::builder::{CreateCommand, CreateCommandOption, CreateEmbed};
 use serenity::model::application::CommandOptionType;
+use crate::music::music_manager;
 
 use crate::util::embed::Embed;
-use crate::util::user_util::{self, get_vc_id};
 
 pub async fn run(ctx: &Context, command: &CommandInteraction) -> CreateEmbed {
     let username = command.user.name.as_str();
     let options = &command.data.options;
-
-    let query = command.data.options.first().and_then(|option| {
+    
+    let query = options.first().and_then(|option| {
         if let CommandDataOptionValue::String(query) = &option.value {
             Some(query)
         } else {
@@ -28,40 +28,7 @@ pub async fn run(ctx: &Context, command: &CommandInteraction) -> CreateEmbed {
         }
     };
     
-    println!("Guild ID: {:?}", guild_id);
-
-    let connect_to = get_vc_id(ctx, &guild_id, &command.user.id).await.expect("Cannot get channel id");
-
-    let manager = &songbird::get(ctx)
-        .await
-        .expect("Cannot get Songbird.")
-        .clone();
-
-    let self_channel = user_util::get_self_vc_id(ctx, &guild_id).await;
-    if !user_util::is_self_connected_to_vc(ctx, &guild_id).await {
-        // self is connected to vc, check if user is in same vc
-
-        if self_channel.is_none() {
-            // Connect to VC
-            manager
-                .join(*guild_id, connect_to)
-                .await
-                .expect("Cannot connect>...");
-        }
-
-    }
-    let self_channel = self_channel.expect("Cannot get self channel");
-
-    // Check if user is in the same VC as the bot
-    if self_channel != connect_to {
-        return Embed::create(
-            username,
-            "You are not in my VC.",
-            "Connect to my VC to control the music.",
-        );
-    }
-
-    Embed::create(username, "Searching...", format!("Looking for {:?}", query))
+    music_manager::attempt_to_queue_song(&ctx, &guild_id, &command.user.id, &command.user.name, query.unwrap()).await
 }
 
 pub fn register() -> CreateCommand {

src/commands/stop.rs

@@ -1,8 +1,7 @@
 use serenity::all::{CommandInteraction, Context};
 use serenity::builder::{CreateCommand, CreateEmbed};
-
+use crate::music::music_manager;
 use crate::util::embed::Embed;
-use crate::util::user_util;
 
 pub async fn run(ctx: &Context, command: &CommandInteraction) -> CreateEmbed {
     let username = command.user.name.as_str();
@@ -14,38 +13,7 @@ pub async fn run(ctx: &Context, command: &CommandInteraction) -> CreateEmbed {
         }
     };
 
-    if !user_util::is_self_connected_to_vc_cached(ctx, guild_id) {
-        // Bot is not connectd to vc; no need to dc
-        return Embed::create(
-            username,
-            "Bot is not connected",
-            "And therefore I cannot stop playing.",
-        );
-    }
-
-    let manager = songbird::get(ctx)
-        .await
-        .expect("Cannot get Songbird")
-        .clone();
-
-    let has_handler = manager.get(*guild_id).is_some();
-
-    if has_handler {
-        if let Err(e) = manager.remove(*guild_id).await {
-            return Embed::create(username, "There was an error", format!("Failed: {:?}", e));
-        }
-        return Embed::create(
-            username,
-            "I stopped and left\nJust like your girlfriend.",
-            "",
-        );
-    }
-
-    Embed::create(
-        username,
-        "Bot is not connected",
-        "And therefore I cannot stop playing.\nSomething happend, which shouldn't have.",
-    )
+    music_manager::attempt_to_stop(&ctx, &guild_id, &command.user.id, &command.user.name).await
 }
 
 pub fn register() -> CreateCommand {

src/main.rs

@@ -1,15 +1,15 @@
 mod commands;
-mod handler;
 mod util;
+mod music;
 
-use serenity::all::{CommandInteraction, OnlineStatus};
+use serenity::all::{CommandInteraction, CreateInteractionResponseFollowup, OnlineStatus, VoiceState};
 use serenity::async_trait;
-use serenity::builder::{CreateEmbed, CreateInteractionResponse, CreateInteractionResponseMessage};
+use serenity::builder::{CreateEmbed};
 use serenity::gateway::ActivityData;
 use serenity::model::application::{Command, Interaction};
 use serenity::model::gateway::Ready;
 use serenity::prelude::*;
-use util::{config, embed::Embed};
+use util::{config, embed::Embed, user_util};
 
 // This trait adds the `register_songbird` and `register_songbird_with` methods
 // to the client builder below, making it easy to install this voice client.
@@ -30,6 +30,8 @@ struct Handler;
 impl EventHandler for Handler {
     async fn interaction_create(&self, ctx: Context, interaction: Interaction) {
         if let Interaction::Command(command) = interaction {
+            let _ = &command.defer(&ctx.http()).await.expect("Cannot defer");
+
             let content = Some(match command.data.name.as_str() {
                 "info" => commands::info::run(&ctx, &command).await,
                 "play" => commands::play::run(&ctx, &command).await,
@@ -38,10 +40,9 @@ impl EventHandler for Handler {
             });
 
             if let Some(embed) = content {
-                let data = CreateInteractionResponseMessage::new().embed(embed);
-                let builder = CreateInteractionResponse::Message(data);
-                if let Err(why) = command.create_response(&ctx.http, builder).await {
-                    println!("Cannot respond to slash command: {why}");
+                let followup = CreateInteractionResponseFollowup::new().embed(embed);
+                if let Err(why) = command.create_followup(&ctx.http, followup).await {
+                    println!("Cannot followup to slash command: {why}")
                 }
             }
         }
@@ -53,8 +54,24 @@ impl EventHandler for Handler {
         let _command = Command::create_global_command(&ctx.http, commands::info::register()).await;
         let _command = Command::create_global_command(&ctx.http, commands::stop::register()).await;
         let _command = Command::create_global_command(&ctx.http, commands::play::register()).await;
+        println!("Commands are registered and Rustendo is ready for Freddy.");
+    }
 
-        println!("Created all public / commands");
+    async fn voice_state_update(&self, ctx: Context, old: Option<VoiceState>, new: VoiceState) {
+        if !new.channel_id.is_none() {
+            return; // User did not leave, ignore
+        }
+        if let Some(old) = old {
+            if !user_util::is_self_connected_to_vc(&ctx, &old.guild_id.unwrap()).await {
+                return; // Bot is not connected to a VC, ignore
+            }
+            if user_util::get_amount_of_members_in_vc(&ctx, &old.guild_id.unwrap(), &old.channel_id.unwrap()).await < 2 {
+                let manager = songbird::get(&ctx).await.expect("Cannot get Songbird");
+                if let Err(e) = manager.remove(old.guild_id.unwrap()).await {
+                    println!("Failed to remove handler: {:?}", e);
+                }
+            }
+        } // else: new user joined, ignore
     }
 }
 

src/music/mod.rs

@@ -0,0 +1,2 @@
+pub mod music_manager;
+pub mod music_events;

src/music/music_events.rs

@@ -0,0 +1,42 @@
+use std::sync::Arc;
+use queues::IsQueue;
+use serenity::all::{ChannelId, GuildId, Http};
+use serenity::async_trait;
+use songbird::{Event, EventContext, EventHandler};
+use crate::music::music_manager;
+
+pub struct TrackEndNotifier {
+    pub guild_id: GuildId,
+    pub channel_id: ChannelId,
+    pub http: Arc<Http>,
+    pub cmdctx: Arc<serenity::client::Context>,
+}
+
+#[async_trait]
+impl EventHandler for TrackEndNotifier {
+    async fn act(&self, ctx: &EventContext<'_>) -> Option<Event> {
+        unsafe { // TODO: Does this need to be unsafe?
+            if let EventContext::Track(track_list) = ctx {
+                println!("The track ended!");
+                let queue = music_manager::get_queue(&self.guild_id);
+                if queue.size() == 0 {
+                    let stopped = match music_manager::stop(&self.cmdctx, &self.guild_id).await {
+                        Ok(stopped) => stopped,
+                        Err(e) => {
+                            println!("Cannot stop: {:?}", e);
+                            return None;
+                        }
+                    };
+                    if stopped {
+                        println!("Stopped playing successfully.");
+                    } else { 
+                        println!("Failed to stop playing.");
+                    }
+                    return None;
+                }
+            }
+        }
+
+        None
+    }
+}

src/music/music_manager.rs

@@ -0,0 +1,173 @@
+use std::collections::{HashMap};
+use std::sync::{Arc, Mutex};
+use std::time::Duration;
+use once_cell::sync::Lazy;
+use queues::Queue;
+use serenity::all::{Context, CreateEmbed, GuildId, UserId};
+use songbird::{Event, TrackEvent};
+use songbird::error::JoinError;
+use songbird::input::{Compose, YoutubeDl};
+use crate::HttpKey;
+use crate::music::music_events;
+use crate::util::embed::Embed;
+use crate::util::user_util;
+use crate::util::user_util::get_vc_id;
+
+/// pub static mut MUSIC_QUEUE: HashMap<GuildId, Queue<String>> = HashMap::new();
+pub static mut MUSIC_QUEUE: Lazy<Mutex<HashMap<GuildId, Queue<String>>>> = Lazy::new(|| {
+    Mutex::new(HashMap::new())
+}); // TODO: This does not work and this is not the way to do it. This is a placeholder for now.
+
+pub unsafe fn get_queue(guild_id: &GuildId) -> &Queue<String> {
+    MUSIC_QUEUE.lock().unwrap().entry(*guild_id).or_insert_with(Queue::new)
+}
+
+pub async fn attempt_to_queue_song(ctx: &Context, guild_id: &GuildId, user_id: &UserId, username: &str, query: &str) -> CreateEmbed {
+    if !user_util::is_user_connected_to_vc(ctx, guild_id, user_id).await {
+        return Embed::create(username, "You are not connected to a VC", "Connect to my VC to control the music.");
+    }
+
+    let connect_to = match get_vc_id(ctx, &guild_id, &user_id).await {
+        Some(channel_id) => channel_id,
+        None => {
+            return Embed::create(username, "Error", "Cannot get channel id");
+        }
+
+    };
+
+    let manager = &songbird::get(ctx)
+        .await
+        .expect("Cannot get Songbird.")
+        .clone();
+
+    let self_channel = user_util::get_self_vc_id(ctx, &guild_id).await;
+    if !user_util::is_self_connected_to_vc(ctx, &guild_id).await {
+        // self is connected to vc, check if user is in same vc
+
+        if self_channel.is_none() { // TODO This could maybe be removed?
+            // Connect to VC
+            manager
+                .join(*guild_id, connect_to)
+                .await
+                .expect("Cannot connect>...");
+        }
+
+    } else {
+        let self_channel = self_channel.expect("Cannot get self channel");
+
+        // Check if user is in the same VC as the bot
+        if self_channel != connect_to {
+            return Embed::create(
+                username,
+                "You are not in my VC.",
+                "Connect to my VC to control the music.",
+            );
+        }
+    }
+
+    // Get query
+    let do_search = !query.starts_with("http");
+    let http_client = {
+        let data = ctx.data.read().await;
+        data.get::<HttpKey>()
+            .cloned()
+            .expect("Guaranteed to exist in the typemap.")
+    };
+
+    // Create source
+    let mut src = if do_search {
+        YoutubeDl::new_search(http_client, query.to_string())
+    } else {
+        YoutubeDl::new(http_client, query.to_string())
+    };
+    let handler_lock = match manager.get(*guild_id) {
+        Some(handler) => handler,
+        None => {
+            return Embed::create(username, "Error", "Cannot get handler");
+        },
+    };
+
+    // Start playing
+    let mut handler = handler_lock.lock().await;
+    let track_handle = handler.play_input(src.clone().into()); // TODO: Add event handlers
+    handler.add_global_event(
+        Event::Track(TrackEvent::End),
+        music_events::TrackEndNotifier {
+            guild_id: *guild_id,
+            channel_id: connect_to,
+            http: Arc::clone(&ctx.http),
+            cmdctx: Arc::new(ctx.clone()),
+        },
+    );
+
+    // Get metadata
+    let metadata = src.aux_metadata().await.expect("Cannot get metadata");
+    let title = metadata.title.unwrap_or("Unknown title".to_string());
+    let author = metadata.artist.unwrap_or("Unknown artist".to_string());
+    let duration = metadata.duration.unwrap_or(Duration::from_millis(0));
+    let thumbnail = metadata.thumbnail.unwrap_or("https://http.cat/images/404.jpg".to_string());
+    let link = metadata.source_url.unwrap_or("https://piped.moonleay.net/404".to_string());
+
+    Embed::create(username, "Added to queue", format!("{} by {} ({}min {}sec) was added to the queue.\n [[Link]({})]",
+                                                      title, author, duration.as_secs() / 60, duration.as_secs() % 60, link))
+        .thumbnail(thumbnail)
+}
+
+
+pub async fn attempt_to_stop(ctx: &Context, guild_id: &GuildId, user_id: &UserId, username: &str) -> CreateEmbed {
+    if !user_util::is_self_connected_to_vc(ctx, guild_id).await {
+        // Bot is not connectd to vc; no need to dc
+        return Embed::create(
+            username,
+            "Bot is not connected",
+            "And therefore there is no need to do anything.",
+        );
+    }
+    let self_channel = user_util::get_self_vc_id(ctx, &guild_id).await.expect("Cannot get self channel");
+    let connect_to = get_vc_id(ctx, &guild_id, &user_id).await.expect("Cannot get channel id");
+
+    // Check if user is in the same VC as the bot
+    if self_channel != connect_to {
+        return Embed::create(
+            username,
+            "You are not in my VC.",
+            "Connect to my VC to control the music.",
+        );
+    }
+
+    let stopped = match stop(ctx, guild_id).await {
+        Ok(stopped) => stopped,
+        Err(e) => {
+            println!("Error while stopping: {:?}", e);
+            return Embed::create(username, "There was an error", "Tell moonleay to check the logs.".to_string());
+        }
+    };
+    
+    if !stopped {
+        return Embed::create(username, "Can't stop, what ain't running.", "I am not connected. I cant stop doing something, when I'm not doing it".to_string());
+    } else {
+        return Embed::create(
+            username,
+            "I stopped and left",
+            "Just like your girlfriend.",
+        );
+    }
+}
+
+// Make the bot leave the voice channel. Returns Ok(true) if bot was connected, returns Ok(false) if bot was not connected. Returns Err if something went wrong.
+pub async fn stop(ctx: &Context, guild_id: &GuildId) -> Result<bool, JoinError> {
+    let manager = songbird::get(ctx)
+        .await
+        .expect("Cannot get Songbird")
+        .clone();
+
+    let has_handler = manager.get(*guild_id).is_some();
+
+    if has_handler {
+        if let Err(e) = manager.remove(*guild_id).await {
+            return Err(e); // Failed to remove handler
+        }
+        return Ok(true) // Handler removed
+    }
+    Ok(false) // No handler, so it's already stopped 
+}

src/util/embed.rs

@@ -22,7 +22,7 @@ impl Embed {
             .title(title)
             .description(message)
             .footer(CreateEmbedFooter::new(format!(
-                "> {} | {}",
+                "> {} - {}",
                 current_time, username
             )))
     }

src/util/user_util.rs

@@ -1,21 +1,7 @@
-use serenity::all::{CacheHttp, ChannelId, Context, Guild, GuildId, GuildRef, PartialGuild, UserId};
-use serenity::Error;
-
-/// Get a guild by id
-pub fn get_guild_cached(ctx: &Context, guild_id: &GuildId) -> Option<Guild> {
-    let guild = match ctx.cache.guild(guild_id) {
-        Some(guild) => guild,
-        None => {
-            println!("Cannot get guild with id {:?}!", guild_id);
-            return None
-        }
-    };
-    
-    println!("Got guild: {:?}", guild.name);
-
-    Some(guild.clone())
-}
+use std::collections::HashMap;
+use serenity::all::{ChannelId, Context, Guild, GuildId, PartialGuild, UserId, VoiceState};
 
+/// Request a guild by id, get it from cache
 pub fn request_guild(ctx: &Context, guild_id: &GuildId) -> Guild {
     let guild = match guild_id.to_guild_cached(&ctx.cache) {
         Some(guild) => guild.clone(),
@@ -39,26 +25,7 @@ pub async fn request_partial_guild(ctx: &Context, guild_id: &GuildId) -> Partial
     guild
 }
 
-/// Get the current channel id of the bot
-pub fn get_vc_id_cached(ctx: &Context, guild_id: &GuildId, user_id: &UserId) -> Option<ChannelId> {
-    let guild = match get_guild_cached(&ctx, guild_id){
-        Some(guild) => guild,
-        None => {
-            println!("Cannot get guild while getting channel id!");
-            return None
-        }
-    };
-
-    let channel_id = guild
-        .voice_states
-        .get(user_id)
-        .and_then(|voice_state| voice_state.channel_id)?;
-
-    println!("Got vc with id: {:?}", channel_id);
-
-    Some(channel_id)
-}
-
+/// Get the voice channel id of a user
 pub async fn get_vc_id(ctx: &Context, guild_id: &GuildId, user_id: &UserId) -> Option<ChannelId> {
     let guild = request_guild(&ctx, guild_id);
     guild
@@ -69,27 +36,40 @@ pub async fn get_vc_id(ctx: &Context, guild_id: &GuildId, user_id: &UserId) -> O
 }
 
 /// Check if the bot is connected to a voice channel
-pub fn is_self_connected_to_vc_cached(ctx: &Context, guild_id: &GuildId) -> bool {
-    let channel_id = get_self_vc_id_cached(ctx, guild_id);
-
-    !channel_id.is_none()
-}
-
 pub async fn is_self_connected_to_vc(ctx: &Context, guild_id: &GuildId) -> bool {
     let channel_id = get_self_vc_id(ctx, guild_id);
 
     !channel_id.await.is_none()
 }
 
-/// Get the current channel id of the bot
-pub fn get_self_vc_id_cached(ctx: &Context, guild_id: &GuildId) -> Option<ChannelId> {
-    let channel_id = get_vc_id_cached(ctx, guild_id, &ctx.cache.current_user().id)?;
+/// Check if a user is connected to a voice channel
+pub async fn is_user_connected_to_vc(ctx: &Context, guild_id: &GuildId, user_id: &UserId) -> bool {
+    let channel_id = get_vc_id(ctx, guild_id, user_id).await;
 
-    Some(channel_id)
+    !channel_id.is_none()
 }
 
+/// Get the voice channel id of the bot
 pub async fn get_self_vc_id(ctx: &Context, guild_id: &GuildId) -> Option<ChannelId> {
     let user_id = ctx.cache.current_user().id;
 
     get_vc_id(ctx, guild_id, &user_id).await
 }
+
+/// Get all voice states of a guild
+pub async fn get_voice_states(ctx: &Context, guild_id: &GuildId) -> HashMap<UserId, VoiceState>{
+    let guild = request_guild(ctx, guild_id);
+    let voice_states = guild.voice_states.clone();
+    voice_states
+}
+
+
+/// Get the amount of members in a voice channel
+pub async fn get_amount_of_members_in_vc(ctx: &Context, guild_id: &GuildId, channel_id: &ChannelId,) -> usize {
+    let voice_states = get_voice_states(ctx, guild_id).await;
+    let amount = voice_states
+        .iter()
+        .filter(|(_, voice_state)| voice_state.channel_id == Some(*channel_id))
+        .count();
+    amount
+}