feat(config): implement config system (#34)

* feat(config): implement config system

Resolved: #25

* chore(changeset): add changeset

* feat(config): add config proxy object

* feat(config): extend `String` to handle default errors

* chore(changeset): add changeset

.changeset/cool-cooks-call.md

@@ -0,0 +1,5 @@
+---
+'@noctisynth/grassator': patch
+---
+
+Extend `String` to `ErrorPayload` to handle default errors

.changeset/early-papayas-melt.md

@@ -0,0 +1,5 @@
+---
+'@noctisynth/grassator': patch
+---
+
+Fix set config arg name to `newConfig`

.changeset/hip-sheep-rest.md

@@ -0,0 +1,6 @@
+---
+'grassator': patch
+'@noctisynth/grassator': patch
+---
+
+Implement config system and auto load on startup

.changeset/itchy-lobsters-laugh.md

@@ -0,0 +1,5 @@
+---
+'@noctisynth/grassator': patch
+---
+
+Add global config proxy object

.changeset/olive-ways-clean.md

@@ -0,0 +1,6 @@
+---
+'grassator': patch
+'@noctisynth/grassator': patch
+---
+
+Add config file path to callback data structure

cspell.json

@@ -17,7 +17,8 @@
         "tauri",
         "toastservice",
         "unocss",
-        "unplugin"
+        "unplugin",
+        "usetoast"
     ],
     "ignorePaths": [
         // Tauri files

src-tauri/Cargo.toml

@@ -20,3 +20,4 @@ tauri-plugin-shell = "2.0.0-beta"
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 reqwest = "0.12.5"
+toml = "0.8.14"

src-tauri/src/lib.rs

@@ -1,10 +1,53 @@
+use models::ErrorPayload;
+
 mod models;
 mod state;
 mod utils;
 
 #[tauri::command]
-fn get_config(config: tauri::State<state::Config>) -> Result<state::Config, ()> {
-    Ok(config.inner().clone())
+async fn load_config<R: tauri::Runtime>(
+    app: tauri::AppHandle<R>,
+    config: tauri::State<'_, state::Config>,
+) -> Result<models::ConfigResult, ErrorPayload> {
+    let config_file_path = utils::get_config_path_buf(&app)?;
+    let config_data = if !config_file_path.exists() {
+        let config_data = toml::to_string_pretty(&state::InnerConfig::default()).unwrap();
+        println!("{}", config_data);
+        std::fs::write(&config_file_path, &config_data).unwrap();
+        config_data
+    } else {
+        std::fs::read_to_string(&config_file_path).unwrap()
+    };
+    let inner_config: state::InnerConfig = toml::from_str(&config_data).unwrap();
+    *config.inner().inner.write().await = inner_config.clone();
+    Ok(models::ConfigResult {
+        inner: inner_config,
+        file_path: config_file_path.to_string_lossy().to_string(),
+    })
+}
+
+#[tauri::command]
+async fn get_config(config: tauri::State<'_, state::Config>) -> Result<state::InnerConfig, ()> {
+    Ok(config.inner().inner.read().await.clone())
+}
+
+#[tauri::command]
+async fn set_config<R: tauri::Runtime>(
+    app: tauri::AppHandle<R>,
+    new_config: state::InnerConfig,
+    config: tauri::State<'_, state::Config>,
+) -> Result<models::SetConfigResult, models::ErrorPayload> {
+    let config_file_path = utils::get_config_path_buf(&app)?;
+    let toml = toml::to_string_pretty(&new_config).unwrap();
+    if let Err(e) = std::fs::write(&config_file_path, toml) {
+        return Err(ErrorPayload {
+            message: format!("Failed to update config file: {}", e),
+        });
+    };
+    *config.inner().inner.write().await = new_config;
+    Ok(models::SetConfigResult {
+        config_path: config_file_path.to_string_lossy().to_string(),
+    })
 }
 
 #[tauri::command]
@@ -24,7 +67,7 @@ async fn download_file(
     output: &str,
     config: tauri::State<'_, state::Config>,
 ) -> Result<models::DownloadResult, ()> {
-    match utils::download_file(url, output, &config.inner()).await {
+    match utils::download_file(url, output, &*config.inner().inner.read().await).await {
         Ok(_) => Ok(models::DownloadResult {
             file_path: output.to_string(),
             error: None,
@@ -42,7 +85,9 @@ pub fn run() {
         .manage(state::Config::default())
         .plugin(tauri_plugin_shell::init())
         .invoke_handler(tauri::generate_handler![
+            load_config,
             get_config,
+            set_config,
             get_file_size,
             download_file
         ])

src-tauri/src/models.rs

@@ -1,5 +1,7 @@
 use serde::{Deserialize, Serialize};
 
+use crate::state::InnerConfig;
+
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub(crate) struct FileSize {
     pub(crate) size: u64,
@@ -11,3 +13,19 @@ pub(crate) struct DownloadResult {
     pub(crate) file_path: String,
     pub(crate) error: Option<String>,
 }
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub(crate) struct SetConfigResult {
+    pub(crate) config_path: String,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub(crate) struct ConfigResult {
+    pub(crate) inner: InnerConfig,
+    pub(crate) file_path: String,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub(crate) struct ErrorPayload {
+    pub(crate) message: String,
+}

src-tauri/src/state.rs

@@ -1,16 +1,29 @@
 use serde::{Deserialize, Serialize};
+use tauri::async_runtime::RwLock;
 
 #[derive(Debug, Clone, Serialize, Deserialize)]
+pub(crate) struct InnerConfig {
+    pub(crate) preset_file: Option<String>,
+    pub(crate) num_threads: Option<u32>,
+}
+
+impl Default for InnerConfig {
+    fn default() -> Self {
+        Self {
+            preset_file: None,
+            num_threads: Some(12),
+        }
+    }
+}
+
 pub(crate) struct Config {
-    pub(crate) preset_file: String,
-    pub(crate) num_threads: u32,
+    pub(crate) inner: RwLock<InnerConfig>,
 }
 
 impl Default for Config {
     fn default() -> Self {
         Self {
-            preset_file: String::from("presets/default.json"),
-            num_threads: 7,
+            inner: RwLock::new(InnerConfig::default()),
         }
     }
 }