add get_signifier method and call it from get_name

src/api/about.rs

@@ -10,6 +10,7 @@
 //! - [`Sbot::get_name`]
 //! - [`Sbot::get_name_and_image`]
 //! - [`Sbot::get_profile_info`]
+//! - [`Sbot::get_signifier`]
 
 use std::collections::HashMap;
 
@@ -407,18 +408,7 @@ impl Sbot {
     /// }
     /// ```
     pub async fn get_name(&mut self, ssb_id: &str) -> Result<String, GolgiError> {
-        let mut sbot_connection = self.get_sbot_connection().await?;
-        let req_id = sbot_connection
-            .client
-            .names_get_signifier_req_send(ssb_id)
-            .await?;
-
-        utils::get_async(
-            &mut sbot_connection.rpc_reader,
-            req_id,
-            utils::string_res_parse,
-        )
-        .await
+        self.get_signifier(ssb_id).await
     }
 
     /// Get the latest `description` value for a peer.
@@ -445,4 +435,39 @@ impl Sbot {
     pub async fn get_description(&mut self, ssb_id: &str) -> Result<Option<String>, GolgiError> {
         self.get_latest_about_message(ssb_id, "description").await
     }
+
+    /// Get the latest `name` value (signifier) for a peer. The public key of
+    /// the peer will be returned if no `name` value is found.
+    ///
+    /// # Example
+    ///
+    /// ```rust
+    /// use golgi::{Sbot, GolgiError, sbot::Keystore};
+    ///
+    /// async fn name_info() -> Result<(), GolgiError> {
+    ///     let mut sbot_client = Sbot::init(Keystore::Patchwork, None, None).await?;
+    ///
+    ///     let ssb_id = "@zqshk7o2Rpd/OaZ/MxH6xXONgonP1jH+edK9+GZb/NY=.ed25519";
+    ///
+    ///     let name = sbot_client.get_signifier(ssb_id).await?;
+    ///
+    ///     println!("peer {} is named {}", ssb_id, name);
+    ///
+    ///     Ok(())
+    /// }
+    /// ```
+    pub async fn get_signifier(&mut self, ssb_id: &str) -> Result<String, GolgiError> {
+        let mut sbot_connection = self.get_sbot_connection().await?;
+        let req_id = sbot_connection
+            .client
+            .names_get_signifier_req_send(ssb_id)
+            .await?;
+
+        utils::get_async(
+            &mut sbot_connection.rpc_reader,
+            req_id,
+            utils::string_res_parse,
+        )
+        .await
+    }
 }