first commit

.dockerignore

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+target/
+
+.gitignore
+compose.dev.yml
+Dockerfile

.gitignore

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+/target/

Cargo.toml

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+[workspace]
+resolver = "3"
+members = ["master", "worker"]

Dockerfile

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+FROM rust:1.93.1-alpine3.23 AS builder
+
+WORKDIR build
+
+COPY . .
+
+RUN \
+    mkdir release
+
+RUN --mount=type=cache,target=/build/target \
+    cargo build --workspace --release && \
+    cp target/release/master release && \
+    cp target/release/worker release
+
+
+
+FROM alpine:3.23 AS master
+
+WORKDIR /app
+
+COPY --from=builder /build/release/master .
+
+CMD ["/app/master"]
+
+
+
+FROM alpine:3.23 AS worker
+
+RUN \
+    apk add --no-cache python3 ffmpeg deno
+
+RUN \
+    wget https://github.com/yt-dlp/yt-dlp/releases/download/2026.02.21/yt-dlp -O /usr/local/bin/yt-dlp && \
+    chmod +x /usr/local/bin/yt-dlp
+
+WORKDIR /app
+
+COPY --from=builder /build/release/worker  .
+
+CMD ["/app/worker"]

compose.dev.yml

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+services:
+  nats:
+    image: nats:2.12.4-alpine3.22
+    ports:
+      - 127.0.0.1:4222:4222

master/Cargo.toml

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+[package]
+name = "master"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+async-nats = { version = "0.46.0" }
+serenity = { version = "0.12.5", default-features = false, features = [
+    "client",
+    "gateway",
+    "rustls_backend",
+    "model",
+    "collector",
+] }
+tokio = { version = "1.49.0", features = ["macros", "rt-multi-thread"] }

master/src/commands/mod.rs

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+pub mod modal;
+pub mod ping;
+pub mod wonderful_command;
+pub mod testnats;

master/src/commands/modal.rs

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+use serenity::builder::*;
+use serenity::model::prelude::*;
+use serenity::prelude::*;
+use serenity::utils::CreateQuickModal;
+
+pub async fn run(ctx: &Context, interaction: &CommandInteraction) -> Result<(), serenity::Error> {
+    let modal = CreateQuickModal::new("About you")
+        .timeout(std::time::Duration::from_secs(600))
+        .short_field("First name")
+        .short_field("Last name")
+        .paragraph_field("Hobbies and interests");
+    let response = interaction.quick_modal(ctx, modal).await?.unwrap();
+
+    let inputs = response.inputs;
+    let (first_name, last_name, hobbies) = (&inputs[0], &inputs[1], &inputs[2]);
+
+    response
+        .interaction
+        .create_response(
+            ctx,
+            CreateInteractionResponse::Message(CreateInteractionResponseMessage::new().content(
+                format!("**Name**: {first_name} {last_name}\n\nHobbies and interests: {hobbies}"),
+            )),
+        )
+        .await?;
+    Ok(())
+}
+
+pub fn register() -> CreateCommand {
+    CreateCommand::new("modal").description("Asks some details about you")
+}

master/src/commands/ping.rs

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+use serenity::builder::CreateCommand;
+use serenity::model::application::ResolvedOption;
+
+pub fn run(_options: &[ResolvedOption]) -> String {
+    "Hey, I'm alive!".to_string()
+}
+
+pub fn register() -> CreateCommand {
+    CreateCommand::new("ping").description("A ping command")
+}

master/src/commands/testnats.rs

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+use serenity::all::{
+    CommandInteraction, Context, CreateCommandOption, CreateInteractionResponse,
+    CreateInteractionResponseMessage,
+};
+use serenity::builder::CreateCommand;
+use serenity::model::application::{CommandOptionType, ResolvedOption, ResolvedValue};
+
+pub async fn run<'a>(
+    ctx: &Context,
+    interaction: &CommandInteraction,
+    nats_client: &async_nats::Client,
+) -> Result<(), serenity::Error> {
+    let options = interaction.data.options();
+
+    if let Some(ResolvedOption {
+        value: ResolvedValue::String(value),
+        ..
+    }) = options.first()
+    {
+        if let Err(why) = nats_client
+            .publish("jobs", format!("{}", value).into())
+            .await
+        {
+            return Err(serenity::Error::Other("send error"));
+        }
+
+        interaction
+            .create_response(
+                ctx,
+                CreateInteractionResponse::Message(
+                    CreateInteractionResponseMessage::new().content(format!("string: {}", value)),
+                ),
+            )
+            .await?;
+    } else {
+        interaction
+            .create_response(
+                ctx,
+                CreateInteractionResponse::Message(
+                    CreateInteractionResponseMessage::new()
+                        .content("Please provide a valid string"),
+                ),
+            )
+            .await?;
+    }
+    Ok(())
+}
+
+pub fn register() -> CreateCommand {
+    CreateCommand::new("testnats")
+        .description("Get a user id")
+        .add_option(
+            CreateCommandOption::new(CommandOptionType::String, "str", "The user to lookup")
+                .required(false),
+        )
+}

master/src/commands/wonderful_command.rs

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+use serenity::builder::CreateCommand;
+
+pub fn register() -> CreateCommand {
+    CreateCommand::new("wonderful_command").description("An amazing command")
+}

master/src/main.rs

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+mod commands;
+
+use std::env;
+
+use serenity::async_trait;
+use serenity::builder::{CreateInteractionResponse, CreateInteractionResponseMessage};
+use serenity::model::application::{Command, Interaction};
+use serenity::model::gateway::Ready;
+use serenity::model::id::GuildId;
+use serenity::prelude::*;
+
+struct Handler {
+    nats_client: async_nats::Client,
+}
+
+#[async_trait]
+impl EventHandler for Handler {
+    async fn interaction_create(&self, ctx: Context, interaction: Interaction) {
+        if let Interaction::Command(command) = interaction {
+            println!("Received command interaction: {command:#?}");
+
+            let content = match command.data.name.as_str() {
+                "testnats" => {
+                    commands::testnats::run(&ctx, &command, &self.nats_client)
+                        .await
+                        .unwrap();
+                    None
+                }
+                "ping" => Some(commands::ping::run(&command.data.options())),
+                "modal" => {
+                    commands::modal::run(&ctx, &command).await.unwrap();
+                    None
+                }
+                _ => Some("not implemented :(".to_string()),
+            };
+
+            if let Some(content) = content {
+                let data = CreateInteractionResponseMessage::new().content(content);
+                let builder = CreateInteractionResponse::Message(data);
+                if let Err(why) = command.create_response(&ctx.http, builder).await {
+                    println!("Cannot respond to slash command: {why}");
+                }
+            }
+        }
+    }
+
+    async fn ready(&self, ctx: Context, ready: Ready) {
+        println!("{} is connected!", ready.user.name);
+
+        let guild_id = GuildId::new(302837320250294283);
+
+        let commands = guild_id
+            .set_commands(
+                &ctx.http,
+                vec![
+                    commands::ping::register(),
+                    commands::modal::register(),
+                    commands::testnats::register(),
+                ],
+            )
+            .await;
+
+        println!("I now have the following guild slash commands: {commands:#?}");
+
+        let global_command =
+            Command::create_global_command(&ctx.http, commands::wonderful_command::register())
+                .await;
+
+        println!("I created the following global slash command: {global_command:#?}");
+    }
+}
+
+#[tokio::main]
+async fn main() {
+    // Configure the client with your Discord bot token in the environment.
+    let token = env::var("DISCORD_TOKEN").expect("Expected a token in the environment");
+
+    let nats_client = async_nats::connect("nats://localhost:4222")
+        .await
+        .expect("Error creating nats client");
+
+    let handler = Handler { nats_client };
+
+    // Build our client.
+    let mut discord_client = Client::builder(token, GatewayIntents::empty())
+        .event_handler(handler)
+        .await
+        .expect("Error creating discord client");
+
+    // Finally, start a single shard, and start listening to events.
+    //
+    // Shards will automatically attempt to reconnect, and will perform exponential backoff until
+    // it reconnects.
+    if let Err(why) = discord_client.start().await {
+        println!("Client error: {why:?}");
+    }
+}

worker/Cargo.toml

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+[package]
+name = "worker"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+async-nats = { version = "0.46.0" }
+futures = { version = "0.3.32" }
+futures-executor = { version = "0.3.32" }
+tokio = { version = "1.49.0", features = ["macros", "rt-multi-thread"] }

worker/src/main.rs

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+use futures::StreamExt;
+
+#[tokio::main]
+async fn main() {
+    let nats_client = async_nats::connect("nats://localhost:4222")
+        .await
+        .expect("Error creating nats client");
+    let mut subscriber = nats_client
+        .queue_subscribe("jobs", "download".to_string())
+        .await
+        .unwrap();
+
+    // Receive and process messages
+    while let Some(message) = subscriber.next().await {
+        println!("Received message {:?}", message);
+    }
+}