[WIP] Daemon & CLI

iota-updater/src/main.rs

@@ -0,0 +1,21 @@
+use anyhow::Result;
+
+#[tokio::main]
+async fn main() -> Result<()> {
+    let command = std::env::args().nth(1).unwrap_or_else(|| "status".into());
+    match command.as_str() {
+        "check" => println!("update check is manifest-driven"),
+        "status" => println!("updater ready"),
+        "apply" | "rollback" => {
+            return Err(anyhow::anyhow!(
+                "explicit signed transaction input is required"
+            ));
+        }
+        _ => {
+            return Err(anyhow::anyhow!(
+                "usage: iota-updater check|status|apply|rollback"
+            ));
+        }
+    }
+    Ok(())
+}