Rust service refactor: app data, session windows & client config pt 2

src-tauri/src/services/client_config/store.rs

@@ -0,0 +1,105 @@
+use std::{fs, path::PathBuf};
+
+use tauri::Manager;
+use tracing::warn;
+use url::Url;
+
+use crate::get_app_handle;
+
+use super::{AppConfig, ClientConfigError};
+
+const CONFIG_FILENAME: &str = "client_config.json";
+const DEFAULT_API_BASE_URL: &str = "https://api.fdolls.adamcv.com";
+
+fn config_file_path(app_handle: &tauri::AppHandle) -> Result<PathBuf, ClientConfigError> {
+    let dir = app_handle
+        .path()
+        .app_config_dir()
+        .map_err(ClientConfigError::ResolvePath)?;
+    Ok(dir.join(CONFIG_FILENAME))
+}
+
+fn strip_trailing_slash(value: &str) -> String {
+    value.trim_end_matches('/').to_string()
+}
+
+fn parse_http_url(value: &str) -> Option<String> {
+    if value.is_empty() {
+        return None;
+    }
+
+    let attempts = [value.to_string(), format!("https://{value}")];
+
+    for attempt in attempts {
+        if let Ok(parsed) = Url::parse(&attempt) {
+            if matches!(parsed.scheme(), "http" | "https") {
+                return Some(strip_trailing_slash(parsed.as_str()));
+            }
+        }
+    }
+
+    None
+}
+
+fn sanitize(mut config: AppConfig) -> AppConfig {
+    config.api_base_url = config
+        .api_base_url
+        .and_then(|v| parse_http_url(v.trim()))
+        .or_else(|| Some(DEFAULT_API_BASE_URL.to_string()))
+        .map(|v| strip_trailing_slash(&v));
+
+    config
+}
+
+pub fn default_app_config() -> AppConfig {
+    AppConfig {
+        api_base_url: Some(DEFAULT_API_BASE_URL.to_string()),
+    }
+}
+
+pub fn load_app_config() -> AppConfig {
+    let app_handle = get_app_handle();
+    let path = match config_file_path(app_handle) {
+        Ok(p) => p,
+        Err(e) => {
+            warn!("Unable to resolve client config path: {e}");
+            return default_app_config();
+        }
+    };
+
+    if !path.exists() {
+        return default_app_config();
+    }
+
+    match fs::read_to_string(&path) {
+        Ok(content) => match serde_json::from_str::<AppConfig>(&content) {
+            Ok(cfg) => sanitize(cfg),
+            Err(e) => {
+                warn!("Failed to parse client config, using defaults: {e}");
+                default_app_config()
+            }
+        },
+        Err(e) => {
+            warn!("Failed to read client config, using defaults: {e}");
+            default_app_config()
+        }
+    }
+}
+
+pub fn save_app_config(config: AppConfig) -> Result<AppConfig, ClientConfigError> {
+    let app_handle = get_app_handle();
+    let path = config_file_path(app_handle)?;
+
+    if let Some(parent) = path.parent() {
+        fs::create_dir_all(parent)?;
+    }
+
+    let sanitized = sanitize(config);
+    let serialized = serde_json::to_string_pretty(&sanitized)?;
+
+    let temp_path = path.with_extension("tmp");
+    fs::write(&temp_path, serialized)?;
+    fs::rename(&temp_path, &path)?;
+
+    Ok(sanitized)
+}