move gui::persistent_state to util::persistent_state

src/util/mod.rs

@@ -2,4 +2,5 @@ pub mod codeberg;
 pub mod consts;
 pub mod countdown;
 pub mod meta;
+pub mod persistent_state;
 pub mod win;

src/util/persistent_state.rs

@@ -0,0 +1,35 @@
+use crate::{features::launch::Platform, gui::settings::Settings, util::consts::APP_STORAGE_PATH};
+use serde::{Deserialize, Serialize};
+use std::{
+    fs::{self, File},
+    io::Write,
+    path::PathBuf,
+    sync::LazyLock,
+};
+
+static CONFIG_PATH: LazyLock<PathBuf> = LazyLock::new(|| APP_STORAGE_PATH.join("config.json"));
+
+#[derive(Serialize, Deserialize)]
+pub struct PersistentState {
+    pub launcher: Platform,
+    pub settings: Settings,
+}
+
+impl PersistentState {
+    pub fn get() -> Option<Self> {
+        fs::read_to_string(CONFIG_PATH.as_path())
+            .ok()
+            .and_then(|config| serde_json::from_str::<Self>(&config).ok())
+    }
+
+    pub fn set(&self) {
+        let config_path = CONFIG_PATH.as_path();
+        let config_path_parent = config_path.parent().unwrap();
+        if !config_path_parent.exists() {
+            fs::create_dir(config_path_parent).unwrap();
+        }
+        let mut config_file = File::create(config_path).unwrap();
+        let json = serde_json::to_string_pretty(&self).unwrap();
+        config_file.write_all(json.as_bytes()).unwrap();
+    }
+}