feat(settings): support editor system fonts

src-tauri/src/commands/mod.rs

@@ -17,6 +17,7 @@ pub mod saved_sql;
 pub mod schema;
 pub mod schema_cache;
 pub mod sql_file;
+pub mod system_fonts;
 pub mod table_import;
 pub mod transfer;
 pub mod update;

src-tauri/src/commands/system_fonts.rs

@@ -0,0 +1,36 @@
+use std::collections::BTreeSet;
+
+use font_kit::source::SystemSource;
+
+pub fn normalize_font_families(families: Vec<String>) -> Vec<String> {
+    families
+        .into_iter()
+        .map(|family| family.trim().to_string())
+        .filter(|family| !family.is_empty())
+        .collect::<BTreeSet<_>>()
+        .into_iter()
+        .collect()
+}
+
+#[tauri::command]
+pub fn list_system_fonts() -> Result<Vec<String>, String> {
+    SystemSource::new().all_families().map(normalize_font_families).map_err(|err| err.to_string())
+}
+
+#[cfg(test)]
+mod tests {
+    use super::normalize_font_families;
+
+    #[test]
+    fn normalizes_and_sorts_font_family_names() {
+        assert_eq!(
+            normalize_font_families(vec![
+                "Maple Mono NF CN".to_string(),
+                " ".to_string(),
+                "Arial".to_string(),
+                "Maple Mono NF CN".to_string(),
+            ]),
+            vec!["Arial".to_string(), "Maple Mono NF CN".to_string()],
+        );
+    }
+}

src-tauri/src/lib.rs

@@ -278,6 +278,7 @@ pub fn run() {
             commands::agents::invalidate_agent_registry_cache,
             commands::agents::import_agents_from_zip,
             commands::agents::import_agent_jar_cmd,
+            commands::system_fonts::list_system_fonts,
         ])
         .build(tauri::generate_context!())
         .expect("error while building tauri application")