Add conversion command for midi files

Cargo.lock

@@ -972,7 +972,7 @@ dependencies = [
 
 [[package]]
 name = "kon"
-version = "0.3.0"
+version = "0.3.1"
 dependencies = [
  "bb8",
  "bb8-postgres",
@@ -980,6 +980,7 @@ dependencies = [
  "once_cell",
  "os_info",
  "poise",
+ "regex",
  "reqwest 0.12.5",
  "serde",
  "serde_json",
@@ -1350,11 +1351,11 @@ dependencies = [
 
 [[package]]
 name = "postgres-protocol"
-version = "0.6.6"
+version = "0.6.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "49b6c5ef183cd3ab4ba005f1ca64c21e8bd97ce4699cfea9e8d9a2c4958ca520"
+checksum = "acda0ebdebc28befa84bee35e651e4c5f09073d668c7aed4cf7e23c3cda84b23"
 dependencies = [
- "base64 0.21.7",
+ "base64 0.22.1",
  "byteorder",
  "bytes",
  "fallible-iterator",
@@ -1368,9 +1369,9 @@ dependencies = [
 
 [[package]]
 name = "postgres-types"
-version = "0.2.6"
+version = "0.2.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8d2234cdee9408b523530a9b6d2d6b373d1db34f6a8e51dc03ded1828d7fb67c"
+checksum = "02048d9e032fb3cc3413bbf7b83a15d84a5d419778e2628751896d856498eee9"
 dependencies = [
  "bytes",
  "fallible-iterator",
@@ -1494,9 +1495,9 @@ dependencies = [
 
 [[package]]
 name = "regex"
-version = "1.10.4"
+version = "1.10.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c117dbdfde9c8308975b6a18d71f3f385c89461f7b3fb054288ecf2a2058ba4c"
+checksum = "b91213439dad192326a0d7c6ee3955910425f441d7038e0d6933b0aec5c4517f"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -2218,9 +2219,9 @@ dependencies = [
 
 [[package]]
 name = "tokio-postgres"
-version = "0.7.10"
+version = "0.7.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d340244b32d920260ae7448cb72b6e238bddc3d4f7603394e7dd46ed8e48f5b8"
+checksum = "03adcf0147e203b6032c0b2d30be1415ba03bc348901f3ff1cc0df6a733e60c3"
 dependencies = [
  "async-trait",
  "byteorder",

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "kon"
-version = "0.3.0"
+version = "0.3.1"
 edition = "2021"
 
 [dependencies]
@@ -10,13 +10,14 @@ cargo_toml = "0.20.4"
 once_cell = "1.19.0"
 os_info = "3.8.2"
 poise = "0.6.1"
+regex = "1.10.5"
 reqwest = { version = "0.12.5", features = ["json"] }
 serde = "1.0.204"
 serde_json = "1.0.120"
 sysinfo = "0.30.13"
 tokenservice-client = { version = "0.3.2", registry = "gitea" }
 tokio = { version = "1.38.1", features = ["macros", "signal", "rt-multi-thread"] }
-tokio-postgres = "0.7.10"
+tokio-postgres = "0.7.11"
 uptime_lib = "0.3.1"
 
 [features]

Dockerfile

@@ -18,7 +18,7 @@ COPY . .
 RUN cargo build -rF production
 
 FROM alpine:3.20
-RUN apk add --no-cache libgcc
+RUN apk add --no-cache libgcc fluidsynth
 WORKDIR /kon
 COPY --from=builder /usr/src/kon/target/release/kon .
 CMD [ "./kon" ]

src/commands.rs

@@ -1,3 +1,4 @@
 pub mod ping;
 pub mod status;
+pub mod midi;
 pub mod uptime;

src/commands/midi.rs

@@ -0,0 +1,78 @@
+use crate::{
+  Error,
+  internals::http::HttpClient
+};
+
+use regex::Regex;
+use std::fs::{
+  write,
+  read_to_string,
+  remove_file
+};
+use poise::{
+  CreateReply,
+  serenity_prelude::CreateAttachment
+};
+
+/// Convert MIDI file to WAV
+#[poise::command(context_menu_command = "MIDI -> WAV")]
+pub async fn midi_to_wav(
+  ctx: poise::Context<'_, (), Error>,
+  #[description = "MIDI file to be converted"] message: poise::serenity_prelude::Message
+) -> Result<(), Error> {
+  ctx.defer().await?;
+
+  let http = HttpClient::new();
+  let resp = http.get(&message.attachments[0].url, "MIDI Conversion").await?;
+  let bytes = resp.bytes().await?;
+
+  let midi_path = &message.attachments[0].filename;
+  write(midi_path, bytes)?;
+
+  let re = Regex::new(r"(?i)\.mid$").unwrap();
+
+  let wav_path = re.replace(&midi_path, ".wav");
+
+  let alpine_sf2 = include_bytes!("../internals/assets/FluidR3_GM.sf2");
+  let sf2_path = if let Ok(os_release) = read_to_string("/etc/os-release") {
+    if os_release.contains("Alpine") {
+      let sf2_path = "/tmp/FluidR3_GM.sf2";
+      write(sf2_path, alpine_sf2)?;
+      sf2_path
+    } else {
+      "/usr/share/sounds/sf2/FluidR3_GM.sf2"
+    }
+  } else {
+    return Err(Error::from("Couldn't read \"/etc/os-release\" file!"))
+  };
+
+  let output = std::process::Command::new("fluidsynth")
+    .args(&[
+      "-ni", sf2_path, midi_path, "-F", &wav_path
+    ])
+    .output();
+
+  match output {
+    Ok(_) => {
+      ctx.send(CreateReply::default()
+        .attachment(CreateAttachment::path(&*wav_path).await.unwrap())
+      ).await.expect("Reply failed");
+
+      remove_file(midi_path)?;
+      remove_file(&*wav_path)?;
+    },
+    Err(y) => {
+      ctx.send(CreateReply::default()
+        .content("Command didn't execute successfully, check console for more information!")
+      )
+      .await.unwrap();
+
+      return Err(Error::from(format!(
+        "Midi conversion failed: {}",
+        y
+      )))
+    }
+  }
+
+  Ok(())
+}

src/main.rs

@@ -98,6 +98,7 @@ async fn main() {
       commands: vec![
         commands::ping::ping(),
         commands::status::status(),
+        commands::midi::midi_to_wav(),
         commands::uptime::uptime()
       ],
       pre_command: |ctx| Box::pin(async move {