feat: initialise Discord bridge crate

Cargo.toml

@@ -1,5 +1,6 @@
 [workspace]
-members = ["crates/*"]
+members = ["crates/*", "crates/bridges/*"]
+exclude = ["crates/bridges"]
 
 [patch.crates-io]
 # mobc-redis = { git = "https://github.com/insertish/mobc", rev = "8b880bb59f2ba80b4c7bc40c649c113d8857a186" }

crates/bridges/discord/Cargo.toml

@@ -0,0 +1,10 @@
+[package]
+name = "revolt-discord-bridge"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+serenity = { version = "0.11.5", default-features = false, features = ["client", "gateway", "rustls_backend", "model"] }
+tokio = { version = "1.0", features = ["macros", "rt-multi-thread"] }

crates/bridges/discord/src/main.rs

@@ -0,0 +1,45 @@
+use std::env;
+
+use serenity::async_trait;
+use serenity::model::channel::Message;
+use serenity::model::channel::Channel;
+use serenity::model::gateway::{GatewayIntents, Ready};
+use serenity::prelude::*;
+
+struct Handler;
+
+#[async_trait]
+impl EventHandler for Handler {
+    async fn message(&self, ctx: Context, msg: Message) {
+        println!("Received message: {}", msg.content);
+
+        if msg.content == "deez" {
+            if let Ok(Channel::Guild(channel)) = msg.channel(&ctx).await {
+                channel.send_message(&ctx, |m| {
+                    m.content("this is where a message would usually go")
+                }).await.unwrap();
+            }
+        }
+    }
+
+    async fn ready(&self, _: Context, ready: Ready) {
+        println!("{} is connected!", ready.user.name);
+    }
+}
+
+#[tokio::main]
+async fn main() {
+    let token = env::var("DISCORD_TOKEN").expect("Expected a token in the environment");
+
+    let intents =
+        GatewayIntents::GUILDS | GatewayIntents::GUILD_MESSAGES | GatewayIntents::MESSAGE_CONTENT;
+    
+    let mut client = Client::builder(token, intents)
+        .event_handler(Handler)
+        .await
+        .expect("Error creating client");
+
+    if let Err(why) = client.start().await {
+        println!("Client error: {:?}", why);
+    }
+}