MVP

.env.example

@@ -0,0 +1,2 @@
+DISCORD_TOKEN=
+PREFIX="-e "

.gitignore

@@ -1,3 +1,4 @@
 /target
 .direnv
 result
+.env

discord-tts-bot/Cargo.toml

@@ -6,3 +6,9 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+dotenv = "0.15.0"
+lazy_static = "1.4.0"
+poise = "0.5.7"
+regex = "1.10.2"
+tokio = { version = "1.33.0", features = ["macros", "signal", "rt-multi-thread"] }
+tts_rust = "0.3.5"

discord-tts-bot/src/main.rs

@@ -1,3 +1,112 @@
-fn main() {
-    println!("Hello, world!");
+use std::{env, sync::{Mutex}};
+
+use poise::{serenity_prelude::{self as serenity, GatewayIntents}, Event, command};
+use regex::Regex;
+use tts_rust::{ tts::GTTSClient, languages::Languages };
+use lazy_static::lazy_static;
+
+type Error = Box<dyn std::error::Error + Send + Sync>;
+type Context<'a> = poise::Context<'a, Data, Error>;
+// type PrefixContext<'a> = poise::PrefixContext<'a, Data, Error>;
+// User data, which is stored and accessible in all command invocations
+pub struct Data {
+    dnd: Mutex<bool>,
 }
+
+lazy_static! {
+    static ref NARRATOR: GTTSClient = GTTSClient {
+        volume: 1.0,
+        language: Languages::English,
+        tld: "com",
+    };
+}
+
+async fn event_handler(
+    ctx: &serenity::Context,
+    event: &Event<'_>,
+    _framework: poise::FrameworkContext<'_, Data, Error>,
+    data: &Data,
+) -> Result<(), Error> {
+    match event {
+        Event::Ready { data_about_bot } => {
+            println!("Logged in as {}", data_about_bot.user.name);
+        }
+        Event::Message { new_message } => {
+            const PREFIX: &str = "tell elnu";
+            lazy_static! {
+                static ref RE: Regex = Regex::new(r"<a?:([^:]+):\d+>").unwrap();
+            };
+            if new_message.content.to_lowercase().starts_with(PREFIX) {
+                if *data.dnd.lock().unwrap() {
+                    new_message.react(&ctx.http, '💤').await?;   
+                } else {
+                    println!("{}: {}", new_message.author.name, new_message.content);
+                    new_message.react(&ctx.http, '✅').await?;
+                    NARRATOR.speak(&format!("{} says {}", new_message.author.name, RE.replace_all(&new_message.content[PREFIX.len()..], "$1"))).unwrap();
+                }
+            }
+        }
+        _ => {}
+    }
+    Ok(())
+}
+
+#[poise::command(prefix_command)]
+async fn register(ctx: Context<'_>) -> Result<(), Error> {
+    poise::builtins::register_application_commands_buttons(ctx).await?;
+    Ok(())
+}
+
+#[command(slash_command, owners_only)]
+async fn toggle_dnd(ctx: Context<'_>) -> Result<(), Error> {
+    let dnd = {
+        // Put into closure so Mutex isn't locked across an await point
+        let mut dnd = ctx.data().dnd.lock().unwrap();
+        *dnd = !*dnd;
+        *dnd
+    };
+    ctx.reply(if dnd {
+        "TTS status set to away. 💤"
+    } else {
+        "TTS status set to active. ✅"
+    }).await?;
+    Ok(())
+}
+
+#[tokio::main]
+async fn main() {
+    // This will load the environment variables located at `./.env`, relative to
+    // the CWD. See `./.env.example` for an example on how to structure this.
+    dotenv::dotenv().expect("Failed to load .env file");
+
+    // Initialize the logger to use environment variables.
+    //
+    // In this case, a good default is setting the environment variable
+    // `RUST_LOG` to `debug`.
+
+    let framework = poise::Framework::builder()
+        .options(poise::FrameworkOptions {
+            commands: vec![
+                register(),
+                toggle_dnd(),
+            ],
+            event_handler: |_ctx, event, _framework, _data| {
+                Box::pin(event_handler(_ctx, event, _framework, _data))
+            },
+            prefix_options: poise::PrefixFrameworkOptions {
+                prefix: Some(env::var("PREFIX").expect("Expected a prefix in the environment")),
+                ..Default::default()
+            },
+            ..Default::default()
+        })
+        .token(std::env::var("DISCORD_TOKEN").expect("Expected a token in the environment"))
+        .intents(
+            GatewayIntents::GUILD_MESSAGES
+                | GatewayIntents::DIRECT_MESSAGES
+                | GatewayIntents::MESSAGE_CONTENT
+                | GatewayIntents::GUILDS,
+        )
+        .setup(move |_ctx, _ready, _framework| Box::pin(async move { Result::<Data, Error>::Ok(Data { dnd: Mutex::new(false) }) }));
+
+    framework.run().await.unwrap();
+}

flake.nix

@@ -34,8 +34,8 @@ Some utility commands:
       };
       rustSettings = with pkgs; {
         src = ./.;
-        #nativeBuildInputs = [ pkg-config ];
-        #buildInputs = [ openssl ];
+        nativeBuildInputs = [ pkg-config ];
+        buildInputs = [ openssl alsa-lib ];
         cargoHash = nixpkgs.lib.fakeHash;
       };
       meta = with nixpkgs.lib; {