feat: ability to join call with user

src/main.rs

@@ -1,10 +1,10 @@
 use clap::Parser;
-use fomo_reducer::{CommandRouter, State, VCs, all_commands, initialize_vcs, update_vcs};
+use fomo_reducer::{CommandRouter, State, all_commands, initialize_vcs, update_vcs};
 use opendal::{IntoOperatorUri, Operator, OperatorUri};
 use secrecy::{ExposeSecret, SecretString};
 use snafu::Snafu;
-use songbird::shards::TwilightMap;
-use std::{collections::HashMap, fmt::Debug, str::FromStr, sync::Arc};
+use songbird::{Songbird, shards::TwilightMap};
+use std::{fmt::Debug, str::FromStr, sync::Arc};
 use tracing_subscriber::{EnvFilter, fmt::format::FmtSpan};
 use twilight_gateway::{Event, EventTypeFlags, Intents, Shard, ShardId, StreamExt};
 use twilight_model::{
@@ -62,7 +62,11 @@ struct AppArgs {
 
 #[derive(Parser)]
 struct LoggingArgs {
-    #[arg(long = "logging-directives", env = "RUST_LOG", default_value = "warn,fomo_reducer=debug")]
+    #[arg(
+        long = "logging-directives",
+        env = "RUST_LOG",
+        default_value = "warn,fomo_reducer=debug"
+    )]
     env_filter: EnvFilter,
 }
 
@@ -106,20 +110,18 @@ async fn main() -> Result<(), MainError> {
         .install_default()
         .unwrap();
 
-    let shard_id = ShardId::new(0, 1);
-    let intents = Intents::GUILD_VOICE_STATES;
-    let mut shard = Shard::new(shard_id, discord_token.expose_secret().to_owned(), intents);
-
-    let senders = TwilightMap::new(FromIterator::from_iter([(
-        shard.id().number(),
-        shard.sender(),
-    )]));
-
-    let event_types = EventTypeFlags::GUILD_VOICE_STATES | EventTypeFlags::INTERACTION_CREATE;
-    let mut next_event = shard.next_event(event_types);
-
     let discord_client = twilight_http::Client::new(discord_token.expose_secret().to_owned());
 
+    let user = discord_client
+        .current_user()
+        .await
+        .expect("couldn't fetch current user") // TODO
+        .model()
+        .await
+        .expect("couldn't deserialize current user"); // TODO
+
+    let user_id = user.id;
+
     let current_application = discord_client
         .current_user_application()
         .await
@@ -132,6 +134,22 @@ async fn main() -> Result<(), MainError> {
 
     let application_id = current_application.id;
 
+    let shard_id = ShardId::new(0, 1);
+    let intents = Intents::GUILD_VOICE_STATES;
+    let mut shard = Shard::new(shard_id, discord_token.expose_secret().to_owned(), intents);
+
+    let senders = TwilightMap::new(FromIterator::from_iter([(
+        shard.id().number(),
+        shard.sender(),
+    )]));
+
+    let senders = Arc::new(senders);
+
+    let songbird = Songbird::twilight(senders, user_id);
+
+    let event_types = EventTypeFlags::GUILD_VOICE_STATES | EventTypeFlags::INTERACTION_CREATE;
+    let mut next_event = shard.next_event(event_types);
+
     let interaction_client = discord_client.interaction(application_id);
 
     let commands = all_commands();
@@ -155,12 +173,15 @@ async fn main() -> Result<(), MainError> {
 
     let vcs = initialize_vcs(&discord_client).await;
     let vcs = Arc::new(vcs);
+
+    let songbird = Arc::new(songbird);
+
+    let state = State { vcs, songbird };
+
     while let Some(event_res) = next_event.await {
         match event_res {
             Ok(event) => {
-                tracing::debug!(?vcs, "before handling");
-                handle_event(&command_router, vcs.clone(), event).await;
-                tracing::debug!(?vcs, "after handling");
+                handle_event(&command_router, state.clone(), event).await;
             }
             Err(error) => {
                 tracing::error!(?error);
@@ -173,11 +194,12 @@ async fn main() -> Result<(), MainError> {
     Ok(())
 }
 
-#[tracing::instrument(skip(command_router, vcs))]
-async fn handle_event(command_router: &CommandRouter, vcs: Arc<VCs>, event: Event) {
+#[tracing::instrument(skip(command_router))]
+async fn handle_event(command_router: &CommandRouter, state: State, event: Event) {
+    state.songbird.process(&event).await;
     match event {
         Event::VoiceStateUpdate(voice_state_update) => {
-            update_vcs(&voice_state_update, &vcs);
+            update_vcs(&voice_state_update, &state.vcs);
         }
         Event::InteractionCreate(interaction_create) => {
             let InteractionCreate(interaction) = *interaction_create;
@@ -188,7 +210,6 @@ async fn handle_event(command_router: &CommandRouter, vcs: Arc<VCs>, event: Even
                 }
                 Some(InteractionData::ApplicationCommand(command_data)) => {
                     let command_name = &command_data.name.clone();
-                    let state = State { vcs };
                     command_router
                         .handle(state, command_name, interaction)
                         .await;