Added startup setup

src/config.rs

@@ -29,33 +29,42 @@ fn default_theme() -> Theme {
     }
 }
 
+pub fn config_path() -> PathBuf {
+    // Respect XDG_CONFIG_HOME; fall back to ~/.config on all platforms.
+    let base = std::env::var("XDG_CONFIG_HOME")
+        .map(PathBuf::from)
+        .unwrap_or_else(|_| {
+            dirs::home_dir()
+                .unwrap_or_else(|| PathBuf::from("."))
+                .join(".config")
+        });
+    base.join(env!("CARGO_PKG_NAME")).join("config.toml")
+}
+
 impl Config {
+    /// Returns true when a config file already exists.
+    pub fn exists() -> bool {
+        config_path().exists()
+    }
+
+    /// Load config from disk. Panics-safe: returns error if file is missing or malformed.
     pub fn load() -> Result<Self> {
-        // Respect XDG_CONFIG_HOME; fall back to ~/.config on all platforms.
-        let config_base = std::env::var("XDG_CONFIG_HOME")
-            .map(PathBuf::from)
-            .unwrap_or_else(|_| {
-                dirs::home_dir()
-                    .unwrap_or_else(|| PathBuf::from("."))
-                    .join(".config")
-            });
-        let config_path = config_base
-            .join(env!("CARGO_PKG_NAME"))
-            .join("config.toml");
-
-        if !config_path.exists() {
-            let default = Config {
-                server_url: "http://localhost:8080/api/menu".to_string(),
-                timeout_sec: 10,
-                theme: default_theme(),
-                update_api: None,
-            };
-            fs::create_dir_all(config_path.parent().unwrap())?;
-            fs::write(config_path, toml::to_string_pretty(&default)?)?;
-            return Ok(default);
-        }
-
-        let content = fs::read_to_string(config_path)?;
+        let path = config_path();
+        let content = fs::read_to_string(&path)?;
         Ok(toml::from_str(&content)?)
     }
+
+    /// Create and persist a new config with the given server URL.
+    pub fn create_with_url(server_url: &str) -> Result<Self> {
+        let path = config_path();
+        let config = Config {
+            server_url: server_url.to_string(),
+            timeout_sec: 10,
+            theme: default_theme(),
+            update_api: None,
+        };
+        fs::create_dir_all(path.parent().unwrap())?;
+        fs::write(&path, toml::to_string_pretty(&config)?)?;
+        Ok(config)
+    }
 }