Downloading song endpoint (#165)

* Added initial code for downloading song endpoint

* Finished download song endpoint

* Making download endpoint available

* Added test

* Code formatting

* Version bump

src/main.rs

@@ -127,6 +127,10 @@ pub mod init {
                 crate::callers::endpoints::STREAMSONG,
                 get(crate::callers::song::endpoint::stream_song),
             )
+            .route(
+                crate::callers::endpoints::DOWNLOADSONG,
+                get(crate::callers::song::endpoint::download_song),
+            )
     }
 
     pub async fn app() -> axum::Router {
@@ -654,6 +658,11 @@ mod tests {
         serde_json::from_slice(&body).unwrap()
     }
 
+    pub async fn format_url_with_value(endpoint: &str, value: &uuid::Uuid) -> String {
+        let last = endpoint.len() - 5;
+        format!("{}/{value}", &endpoint[0..last])
+    }
+
     // TODO: Change the name of the function to be more expressive and put into it's own module
     pub mod payload_data {
         pub async fn queue_metadata_payload_data(song_queue_id: &uuid::Uuid) -> serde_json::Value {
@@ -1997,5 +2006,60 @@ mod tests {
 
             let _ = super::db_mgr::drop_database(&tm_pool, &db_name).await;
         }
+
+        #[tokio::test]
+        async fn test_download_song() {
+            let tm_pool = super::db_mgr::get_pool().await.unwrap();
+            let db_name = super::db_mgr::generate_db_name().await;
+
+            match super::db_mgr::create_database(&tm_pool, &db_name).await {
+                Ok(_) => {
+                    println!("Success");
+                }
+                Err(err) => {
+                    assert!(false, "Error: {:?}", err);
+                }
+            }
+
+            let pool = super::db_mgr::connect_to_db(&db_name).await.unwrap();
+            super::db_mgr::migrations(&pool).await;
+
+            let app = super::init::app(pool).await;
+
+            let id = test_data::song_id().await.unwrap();
+
+            let uri =
+                super::format_url_with_value(crate::callers::endpoints::DOWNLOADSONG, &id).await;
+
+            match app
+                .clone()
+                .oneshot(
+                    axum::http::Request::builder()
+                        .method(axum::http::Method::GET)
+                        .uri(&uri)
+                        .body(axum::body::Body::empty())
+                        .unwrap(),
+                )
+                .await
+            {
+                Ok(response) => {
+                    let e = response.into_body();
+                    let mut data = e.into_data_stream();
+                    while let Some(chunk) = data.next().await {
+                        match chunk {
+                            Ok(_data) => {}
+                            Err(err) => {
+                                assert!(false, "Error: {err:?}");
+                            }
+                        }
+                    }
+                }
+                Err(err) => {
+                    assert!(false, "Error: {err:?}");
+                }
+            }
+
+            let _ = super::db_mgr::drop_database(&tm_pool, &db_name).await;
+        }
     }
 }