Next queued song (#123)

* Added code to fetch next queue item

* Updated README

* Give it a go

* Minor docker compose change

* Added docker-compose defaults

* Code refactor

* Removed data from being fetched

* Added test

* Formatting

README.md

@@ -12,4 +12,6 @@ docker compose build --ssh default api auth_api
 ```
 
 Bring it up
+```
 docker compose up -d --force-recreate api auth_api
+```

docker-compose.yaml

@@ -3,7 +3,9 @@ version: '3.8' # Use a recent version
 services:
   # --- Web API ---
   api:
-    build: . # Tells docker-compose to build the Dockerfile in the current directory
+    build: # Tells docker-compose to build the Dockerfile in the current directory
+      context: .
+      ssh: ["default"]  # Uses host's SSH agent
     container_name: icarus # Optional: Give the container a specific name
     ports:
       # Map host port 8000 to container port 3000 (adjust as needed)
@@ -22,6 +24,7 @@ services:
   auth_api:
     build:
       context: ../icarus_auth # IMPORTANT: Relative path to the local checkout of your web API repo (containing the Dockerfile)
+      ssh: ["default"]  # Uses host's SSH agent
       dockerfile: Dockerfile # Optional: Specify if your Dockerfile has a non-standard name
     container_name: auth_api
     restart: unless-stopped

src/callers/mod.rs

@@ -3,5 +3,6 @@ pub mod song;
 
 pub mod endpoints {
     pub const QUEUESONG: &str = "/api/v2/song/queue";
+    pub const NEXTQUEUESONG: &str = "/api/v2/song/queue/next";
     pub const QUEUEMETADATA: &str = "/api/v2/song/metadata/queue";
 }

src/callers/song.rs

@@ -15,6 +15,16 @@ pub mod response {
         pub message: String,
         pub data: Vec<uuid::Uuid>,
     }
+
+    pub mod fetch_queue_song {
+        use serde::{Deserialize, Serialize};
+
+        #[derive(Default, Deserialize, Serialize)]
+        pub struct Response {
+            pub message: String,
+            pub data: Vec<crate::callers::song::song_queue::SongQueue>,
+        }
+    }
 }
 
 mod song_queue {
@@ -23,7 +33,7 @@ mod song_queue {
     pub mod status {
         pub const PENDING: &str = "pending";
         // Will be used later on
-        pub const _PROCESSING: &str = "processing";
+        pub const PROCESSING: &str = "processing";
         pub const _DONE: &str = "done";
     }
 
@@ -32,6 +42,13 @@ mod song_queue {
         pub id: uuid::Uuid,
     }
 
+    #[derive(Debug, serde::Deserialize, serde::Serialize, sqlx::FromRow)]
+    pub struct SongQueue {
+        pub id: uuid::Uuid,
+        pub filename: String,
+        pub status: String,
+    }
+
     pub async fn insert(
         pool: &sqlx::PgPool,
         data: &Vec<u8>,
@@ -63,6 +80,48 @@ mod song_queue {
             Err(_err) => Err(sqlx::Error::RowNotFound),
         }
     }
+
+    pub async fn get_most_recent_and_update(pool: &sqlx::PgPool) -> Result<SongQueue, sqlx::Error> {
+        let result = sqlx::query(
+            r#"
+            UPDATE "songQueue"
+            SET status = $1
+            WHERE id = (
+                SELECT id FROM "songQueue"
+                WHERE status = $2
+                ORDER BY id
+                FOR UPDATE SKIP LOCKED
+                LIMIT 1
+            )
+            RETURNING id, filename, status;
+            "#,
+        )
+        .bind(status::PROCESSING)
+        .bind(status::PENDING)
+        .fetch_one(pool)
+        .await
+        .map_err(|e| {
+            eprintln!("Error inserting: {}", e);
+        });
+
+        match result {
+            Ok(row) => Ok(SongQueue {
+                id: row
+                    .try_get("id")
+                    .map_err(|_e| sqlx::Error::RowNotFound)
+                    .unwrap(),
+                filename: row
+                    .try_get("filename")
+                    .map_err(|_e| sqlx::Error::RowNotFound)
+                    .unwrap(),
+                status: row
+                    .try_get("status")
+                    .map_err(|_e| sqlx::Error::RowNotFound)
+                    .unwrap(),
+            }),
+            Err(_err) => Err(sqlx::Error::RowNotFound),
+        }
+    }
 }
 
 pub mod endpoint {
@@ -117,4 +176,25 @@ pub mod endpoint {
 
         (StatusCode::OK, Json(response))
     }
+
+    pub async fn fetch_queue_song(
+        axum::Extension(pool): axum::Extension<sqlx::PgPool>,
+    ) -> (
+        StatusCode,
+        Json<super::response::fetch_queue_song::Response>,
+    ) {
+        let mut response = super::response::fetch_queue_song::Response::default();
+
+        match song_queue::get_most_recent_and_update(&pool).await {
+            Ok(item) => {
+                response.message = String::from("Successful");
+                response.data.push(item);
+                (StatusCode::OK, Json(response))
+            }
+            Err(err) => {
+                response.message = err.to_string();
+                (StatusCode::BAD_REQUEST, Json(response))
+            }
+        }
+    }
 }

src/main.rs

@@ -69,6 +69,10 @@ pub mod init {
                 crate::callers::endpoints::QUEUESONG,
                 post(crate::callers::song::endpoint::queue_song),
             )
+            .route(
+                crate::callers::endpoints::NEXTQUEUESONG,
+                get(crate::callers::song::endpoint::fetch_queue_song),
+            )
             .route(
                 crate::callers::endpoints::QUEUEMETADATA,
                 post(crate::callers::metadata::endpoint::queue_metadata),
@@ -250,6 +254,84 @@ mod tests {
         let _ = db_mgr::drop_database(&tm_pool, &db_name).await;
     }
 
+    #[tokio::test]
+    async fn test_song_fetch_queue_item() {
+        let tm_pool = db_mgr::get_pool().await.unwrap();
+        let db_name = db_mgr::generate_db_name().await;
+
+        match db_mgr::create_database(&tm_pool, &db_name).await {
+            Ok(_) => {
+                println!("Success");
+            }
+            Err(err) => {
+                assert!(false, "Error: {:?}", err);
+            }
+        }
+
+        let pool = db_mgr::connect_to_db(&db_name).await.unwrap();
+        db::migrations(&pool).await;
+
+        let app = crate::init::routes()
+            .await
+            .layer(axum::Extension(pool))
+            .layer(axum::extract::DefaultBodyLimit::max(1024 * 1024 * 1024))
+            .layer(TimeoutLayer::new(Duration::from_secs(300)));
+
+        // Create multipart form
+        let mut form = MultipartForm::default();
+        let _ = form.add_file("flac", "tests/Machine_gun/track01.flac");
+
+        // Create request
+        let content_type = form.content_type();
+        let body = MultipartBody::from(form);
+        let req = axum::http::Request::builder()
+            .method(axum::http::Method::POST)
+            .uri(crate::callers::endpoints::QUEUESONG)
+            .header(axum::http::header::CONTENT_TYPE, content_type)
+            .body(axum::body::Body::from_stream(body))
+            .unwrap();
+
+        // Send request
+        match app.clone().oneshot(req).await {
+            Ok(response) => {
+                let body = axum::body::to_bytes(response.into_body(), usize::MAX)
+                    .await
+                    .unwrap();
+                println!("Body: {:?}", body);
+                let resp: crate::callers::song::response::Response =
+                    serde_json::from_slice(&body).unwrap();
+                assert_eq!(false, resp.data.is_empty(), "Should not be empty");
+                assert_eq!(false, resp.data[0].is_nil(), "Should not be empty");
+
+                let fetch_req = axum::http::Request::builder()
+                    .method(axum::http::Method::GET)
+                    .uri(crate::callers::endpoints::NEXTQUEUESONG)
+                    .header(axum::http::header::CONTENT_TYPE, "application/json")
+                    .body(axum::body::Body::empty())
+                    .unwrap();
+
+                match app.clone().oneshot(fetch_req).await {
+                    Ok(response) => {
+                        let body = axum::body::to_bytes(response.into_body(), usize::MAX)
+                            .await
+                            .unwrap();
+                        let resp: crate::callers::song::response::fetch_queue_song::Response =
+                            serde_json::from_slice(&body).unwrap();
+                        assert_eq!(false, resp.data.is_empty(), "Should not be empty");
+                    }
+                    Err(err) => {
+                        assert!(false, "Error: {:?}", err);
+                    }
+                }
+            }
+            Err(err) => {
+                assert!(false, "Error: {:?}", err);
+            }
+        };
+
+        let _ = db_mgr::drop_database(&tm_pool, &db_name).await;
+    }
+
     #[tokio::test]
     async fn test_song_metadata_queue() {
         let tm_pool = db_mgr::get_pool().await.unwrap();