feat: Add tracing and md5 dependency

Adds the `tracing` and `md5` crates to the project, enabling enhanced
logging and cryptographic hashing capabilities. Includes `TraceLayer`
for HTTP request tracing and configures `tracing-subscriber` with
`EnvFilter`.

src/routes/system_router.rs

@@ -1,17 +1,51 @@
-use crate::state::AppState;
+use crate::schema::users;
 use crate::types::types::OpenSubSonicResponses;
+use crate::{state::AppState, types::types::OpenSubsonicAuth};
+use axum::extract::State;
 use axum::{Json, Router, http::StatusCode, routing::get};
+use diesel::{ExpressionMethods, QueryDsl, RunQueryDsl};
 
 pub fn system_routers() -> Router<AppState> {
-    Router::new().route(
-        "/getOpenSubsonicExtensions",
-        get(get_opensubsonic_extentions).post(get_opensubsonic_extentions),
+    Router::new()
+        .route(
+            "/getOpenSubsonicExtensions.view",
+            get(get_opensubsonic_extensions).post(get_opensubsonic_extensions),
+        )
+        .route("/ping.view", get(ping).post(ping))
+        .route("/license.view", get(license).post(license))
+}
+
+async fn license(
+    State(db_con): State<AppState>,
+    user: OpenSubsonicAuth,
+) -> (StatusCode, Json<OpenSubSonicResponses>) {
+    let conn = &mut db_con.pool.get().unwrap();
+    let result = users::table
+        .select(users::email)
+        .filter(users::username.eq(user.username))
+        .first::<String>(conn);
+    match result {
+        Ok(e) => (
+            StatusCode::OK,
+            Json(OpenSubSonicResponses::license_response(Some(e))),
+        ),
+        Err(_) => (
+            StatusCode::OK,
+            Json(OpenSubSonicResponses::license_response(None)),
+        ),
+    }
+}
+
+async fn ping(_user: OpenSubsonicAuth) -> (StatusCode, Json<OpenSubSonicResponses>) {
+    (
+        StatusCode::OK,
+        Json(OpenSubSonicResponses::open_subsonic_response()),
     )
 }
 
-async fn get_opensubsonic_extentions() -> (StatusCode, Json<OpenSubSonicResponses>) {
+async fn get_opensubsonic_extensions() -> (StatusCode, Json<OpenSubSonicResponses>) {
     (
         StatusCode::OK,
-        Json(OpenSubSonicResponses::open_subsonic_extentions()),
+        Json(OpenSubSonicResponses::open_subsonic_extensions()),
     )
 }