tsk-45: Root directory check (#66)

Closes #45

Reviewed-on: #66
Co-authored-by: phoenix <kundeng00@pm.me>
Co-committed-by: phoenix <kundeng00@pm.me>

src/config.rs

@@ -3,4 +3,25 @@ pub struct App {
     pub uri: String,
     pub auth_uri: String,
     pub token: icarus_models::login_result::LoginResult,
+    pub root_directory: String,
+}
+
+impl App {
+    pub fn does_root_directory_exists(&self) -> bool {
+        let path = std::path::Path::new(&self.root_directory);
+        if path.exists() { path.is_dir() } else { false }
+    }
+}
+
+pub async fn initialize_app_config() -> App {
+    App {
+        uri: icarus_envy::environment::get_icarus_base_api_url()
+            .await
+            .value,
+        auth_uri: icarus_envy::environment::get_icarus_auth_base_api_url()
+            .await
+            .value,
+        root_directory: icarus_envy::environment::get_root_directory().await.value,
+        ..Default::default()
+    }
 }