feat(rola-cli): implement bucket creation and CLI entry point

Add bucket creation logic with pre-checks, localized error handling, and
a basic CLI entry point using the mingling framework. Introduce a
placeholder protocol for bucket transfer testing.

1 files changed, 42 insertions, 0 deletions

diff --git a/rola-cli/src/lib.rs b/rola-cli/src/lib.rs
index 8b13789..f81c34e 100644
--- a/rola-cli/src/lib.rs
+++ b/rola-cli/src/lib.rs
@@ -1 +1,43 @@
+use mingling::macros::gen_program;
 
+pub mod res;
+pub mod tokio_wrapper;
+
+mod bucket_mgr;
+use bucket_mgr::*;
+
+mod error;
+use error::*;
+
+gen_program!();
+
+pub mod locale {
+    shakehand::locale!("locales");
+
+    /// Determines the current locale string used by the application.
+    ///
+    /// The locale is resolved by checking environment variables in the following
+    /// priority order:
+    /// 1. `JV_LANG` — application-specific variable.
+    /// 2. `APP_LANG` — general application language override.
+    /// 3. `LANG` — system locale (e.g. `en_US.UTF-8`). If this variable contains a
+    ///    character encoding suffix (e.g. `.UTF-8`), only the base part is kept,
+    ///    and underscores (`_`) are replaced with hyphens (`-`) to form a
+    ///    language tag (e.g. `en-US`).
+    /// 4. Falls back to `"en"` if none of the above are set.
+    pub fn current_locales() -> String {
+        if let Ok(lang) = std::env::var("JV_LANG") {
+            return lang;
+        }
+        if let Ok(lang) = std::env::var("APP_LANG") {
+            return lang;
+        }
+        if let Ok(lang) = std::env::var("LANG") {
+            if let Some(base_lang) = lang.split('.').next() {
+                return base_lang.replace('_', "-");
+            }
+            return lang;
+        }
+        "en".to_string()
+    }
+}