feat: add more nostr commands

src-tauri/src/nostr/metadata.rs

@@ -0,0 +1,26 @@
+use crate::AppState;
+use nostr_sdk::prelude::*;
+use std::time::Duration;
+use tauri::State;
+
+#[tauri::command(async)]
+pub async fn get_metadata(npub: String, app_state: State<'_, AppState>) -> Result<Metadata, ()> {
+  let client = &app_state.nostr;
+
+  let public_key = XOnlyPublicKey::from_bech32(npub).unwrap();
+
+  let filter = Filter::new()
+    .author(public_key)
+    .kind(Kind::Metadata)
+    .limit(1);
+
+  let events = client
+    .get_events_of(vec![filter], Some(Duration::from_secs(10)))
+    .await
+    .expect("Get metadata failed");
+
+  let event = events.into_iter().nth(0).unwrap();
+  let metadata: Metadata = Metadata::from_json(&event.content).unwrap();
+
+  Ok(metadata)
+}