Decouple core Yaak logic from Tauri (#354)

crates-tauri/yaak-fonts/src/commands.rs

@@ -0,0 +1,38 @@
+use crate::Result;
+use font_loader::system_fonts;
+use serde::{Deserialize, Serialize};
+use std::collections::HashSet;
+use tauri::command;
+use ts_rs::TS;
+
+#[derive(Default, Debug, Clone, Serialize, Deserialize, TS, PartialEq)]
+#[serde(rename_all = "camelCase")]
+#[ts(export, export_to = "gen_fonts.ts")]
+pub struct Fonts {
+    pub editor_fonts: Vec<String>,
+    pub ui_fonts: Vec<String>,
+}
+
+#[command]
+pub(crate) async fn list() -> Result<Fonts> {
+    let mut ui_fonts = HashSet::new();
+    let mut editor_fonts = HashSet::new();
+
+    let mut property = system_fonts::FontPropertyBuilder::new().monospace().build();
+    for font in &system_fonts::query_specific(&mut property) {
+        editor_fonts.insert(font.to_string());
+    }
+    for font in &system_fonts::query_all() {
+        if !editor_fonts.contains(font) {
+            ui_fonts.insert(font.to_string());
+        }
+    }
+
+    let mut ui_fonts: Vec<String> = ui_fonts.into_iter().collect();
+    let mut editor_fonts: Vec<String> = editor_fonts.into_iter().collect();
+
+    ui_fonts.sort();
+    editor_fonts.sort();
+
+    Ok(Fonts { ui_fonts, editor_fonts })
+}