add current song

src-tauri/src/lib.rs

@@ -7,6 +7,7 @@ use serde_json::json;
 use tauri::{AppHandle, Manager, State};
 use tauri_plugin_shell::process::{CommandChild, CommandEvent};
 use tauri_plugin_shell::ShellExt;
+use reqwest;
 
 struct SidecarState {
     child: Mutex<Option<CommandChild>>,
@@ -115,6 +116,24 @@ async fn cast_set_volume(
     Ok(())
 }
 
+#[tauri::command]
+async fn fetch_url(_app: AppHandle, url: String) -> Result<String, String> {
+    // Simple GET with default client, return body text. Errors are stringified for frontend.
+    match reqwest::Client::new().get(&url).send().await {
+        Ok(resp) => {
+            let status = resp.status();
+            if !status.is_success() {
+                return Err(format!("HTTP {} while fetching {}", status, url));
+            }
+            match resp.text().await {
+                Ok(t) => Ok(t),
+                Err(e) => Err(e.to_string()),
+            }
+        }
+        Err(e) => Err(e.to_string()),
+    }
+}
+
 #[cfg_attr(mobile, tauri::mobile_entry_point)]
 pub fn run() {
     tauri::Builder::default()
@@ -168,7 +187,9 @@ pub fn run() {
             list_cast_devices,
             cast_play,
             cast_stop,
-            cast_set_volume
+                cast_set_volume,
+                // allow frontend to request arbitrary URLs via backend (bypass CORS)
+                fetch_url
         ])
         .run(tauri::generate_context!())
         .expect("error while running tauri application");