Refactor state system #7

src-tauri/src/commands.rs

@@ -1,35 +1,17 @@
 use tauri::State;
 
-use crate::{LauncherSettings, Mod, SharedState};
+use crate::{save_state, LauncherSettings, Mod, SharedState};
 
 #[tauri::command]
 pub fn get_installed_mods(state: State<SharedState>, version_id: String) -> Vec<Mod> {
-    let state = state.lock().unwrap();
+    Vec::new()
-    state
-        .mods
-        .iter()
-        .filter(|m| m.supported_versions.contains(&version_id))
-        .cloned()
-        .collect()
 }
 
 #[tauri::command]
-pub fn toggle_mod(state: State<SharedState>, mod_id: String) {
+pub fn toggle_mod(state: State<SharedState>, mod_id: String) {}
-    let mut state = state.lock().unwrap();
-    if let Some(mod_item) = state.mods.iter_mut().find(|m| m.id == mod_id) {
-        mod_item.enabled = !mod_item.enabled;
-    }
-}
 
 #[tauri::command]
-pub fn install_mod(state: State<SharedState>, mut mod_item: Mod) {
+pub fn install_mod(state: State<SharedState>, mut mod_item: Mod) {}
-    let mut state = state.lock().unwrap();
-
-    if !state.mods.iter().any(|m| m.id == mod_item.id) {
-        mod_item.enabled = true;
-        state.mods.push(mod_item);
-    }
-}
 
 #[tauri::command]
 pub fn get_settings(state: State<SharedState>) -> LauncherSettings {
@@ -38,6 +20,25 @@ pub fn get_settings(state: State<SharedState>) -> LauncherSettings {
 
 #[tauri::command]
 pub fn update_settings(state: State<SharedState>, new_settings: LauncherSettings) {
-    let mut state = state.lock().unwrap();
+    {
-    state.settings = new_settings;
+        let mut state = state.lock().unwrap();
+        state.settings = new_settings;
+    }
+
+    save_state(&state);
+}
+
+#[tauri::command]
+pub fn get_version(state: State<SharedState>) -> String {
+    state.lock().unwrap().version.clone()
+}
+
+#[tauri::command]
+pub fn update_version(state: State<SharedState>, version: String) {
+    {
+        let mut state = state.lock().unwrap();
+        state.version = version;
+    }
+
+    save_state(&state);
 }

src-tauri/src/lib.rs

@@ -2,7 +2,11 @@ pub mod commands;
 pub mod launcher;
 
 use serde::{Deserialize, Serialize};
-use std::sync::Mutex;
+use std::{fs, path::PathBuf, sync::Mutex};
+
+use crate::launcher::LAUNCHER_DIR;
+
+type SharedState = Mutex<AppState>;
 
 // --- Types ---
 #[derive(Clone, Serialize, Deserialize)]
@@ -31,43 +35,74 @@ pub struct LauncherSettings {
 }
 
 // --- App State ---
+#[derive(Clone, Serialize, Deserialize)]
 pub struct AppState {
-    pub mods: Vec<Mod>,
     pub settings: LauncherSettings,
+    pub version: String,
 }
 
 impl Default for AppState {
     fn default() -> Self {
         Self {
-            mods: vec![
-                Mod {
-                    id: "sodium".into(),
-                    name: "Sodium".into(),
-                    version: "0.5.8".into(),
-                    author: "jellysquid3".into(),
-                    description: "Modern rendering engine for Minecraft.".into(),
-                    enabled: true,
-                    icon: None,
-                    supported_versions: vec!["1.20.1".into(), "1.20.4".into(), "1.21".into()],
-                },
-                Mod {
-                    id: "iris".into(),
-                    name: "Iris".into(),
-                    version: "1.7.0".into(),
-                    author: "coderbot".into(),
-                    description: "A modern shaders mod for Minecraft.".into(),
-                    enabled: true,
-                    icon: None,
-                    supported_versions: vec!["1.20.1".into(), "1.20.4".into(), "1.21".into()],
-                },
-            ],
             settings: LauncherSettings {
                 jvm_arguments: "-XX:+UseG1GC -XX:+ParallelRefProcEnabled -XX:MaxGCPauseMillis=200"
                     .into(),
                 max_memory: 4096,
             },
+            version: String::from("1.21.6"),
         }
     }
 }
 
-type SharedState = Mutex<AppState>;
+// Helper to get config path
+fn config_path() -> PathBuf {
+    LAUNCHER_DIR.config_dir().join("launcher.json")
+}
+
+// --- Load ---
+pub fn load_state() -> SharedState {
+    let path = config_path();
+
+    if path.exists() {
+        match fs::read_to_string(&path) {
+            Ok(content) => match serde_json::from_str::<AppState>(&content) {
+                Ok(state) => return Mutex::new(state),
+                Err(err) => {
+                    eprintln!("Failed to parse config, using default: {err}");
+                }
+            },
+            Err(err) => {
+                eprintln!("Failed to read config, using default: {err}");
+            }
+        }
+    }
+
+    // If missing or failed → create default
+    let default = Mutex::new(AppState::default());
+    save_state(&default);
+
+    default
+}
+
+// --- Save ---
+pub fn save_state(state: &SharedState) {
+    let path = config_path();
+
+    if let Some(parent) = path.parent() {
+        if let Err(err) = fs::create_dir_all(parent) {
+            eprintln!("Failed to create config directory: {err}");
+            return;
+        }
+    }
+
+    match serde_json::to_string_pretty(&*state.lock().unwrap()) {
+        Ok(json) => {
+            if let Err(err) = fs::write(path, json) {
+                eprintln!("Failed to write config: {err}");
+            }
+        }
+        Err(err) => {
+            eprintln!("Failed to serialize config: {err}");
+        }
+    }
+}

src-tauri/src/main.rs

@@ -1,21 +1,22 @@
 // Prevents additional console window on Windows in release, DO NOT REMOVE!!
 #![cfg_attr(not(debug_assertions), windows_subsystem = "windows")]
 
-use saturn_launcher_lib::{commands::*, AppState};
+use saturn_launcher_lib::load_state;
-use std::sync::Mutex;
 
 #[cfg_attr(mobile, tauri::mobile_entry_point)]
 fn main() {
     tauri::Builder::default()
         .plugin(tauri_plugin_opener::init())
-        .manage(Mutex::new(AppState::default()))
+        .manage(load_state())
         .invoke_handler(tauri::generate_handler![
             // Saturn Launcher Commands
-            get_installed_mods,
+            saturn_launcher_lib::commands::get_installed_mods,
-            toggle_mod,
+            saturn_launcher_lib::commands::toggle_mod,
-            install_mod,
+            saturn_launcher_lib::commands::install_mod,
-            get_settings,
+            saturn_launcher_lib::commands::get_settings,
-            update_settings,
+            saturn_launcher_lib::commands::update_settings,
+            saturn_launcher_lib::commands::get_version,
+            saturn_launcher_lib::commands::update_version,
             // Launcher Commands
             saturn_launcher_lib::launcher::launch_game,
             // Auth Commands

src/App.tsx

@@ -7,6 +7,7 @@ import SettingsSection from "./components/SettingsSection";
 import { versions } from "./lib/launcher";
 import { GameVersion } from "./lib/types";
 import { MinecraftAccount } from "./lib/auth";
+import { getVersion, updateVersion } from "./lib/saturn";
 
 type Section = "play" | "mods" | "settings";
 
@@ -50,9 +51,16 @@ export default function App() {
   }, []);
 
   useEffect(() => {
-    setSelectedVersion(versions[0]);
+    (async () => {
+      const version = await getVersion();
+      setSelectedVersion(versions.find((v) => v.id == version) || null);
+    })();
   }, []);
 
+  useEffect(() => {
+    if (selectedVersion?.id) updateVersion(selectedVersion?.id);
+  }, [selectedVersion]);
+
   return (
     <div className="flex h-screen">
       <Sidebar active={active} setActive={setActive} />

src/lib/saturn.ts

@@ -65,3 +65,12 @@ export async function updateSettings(
 ): Promise<void> {
   await invoke("update_settings", { newSettings });
 }
+
+// --- Version ---
+export async function getVersion(): Promise<string> {
+  return await invoke("get_version");
+}
+
+export async function updateVersion(version: string): Promise<void> {
+  await invoke("update_version", { version });
+}