Enhance README with CLI room checking instructions and implement room name resolution in command handling. Updated handle_init_command and handle_join_command to use resolved room names, improving room access validation. Added CLI command handling in main.rs to list available rooms from the database or fallback configuration.

src/main.rs

@@ -38,6 +38,10 @@ async fn main() -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
         allowed_users: db::parse_allowed_users(),
         db_client,
     });
+    if handle_cli_commands().as_deref() == Some("--list-rooms") {
+        print_rooms_for_cli(&config).await?;
+        return Ok(());
+    }
     let rooms = db::load_room_configs(&config).await.unwrap_or_else(|_| {
         vec![types::RoomMeta {
             name: "lobby".to_string(),
@@ -212,6 +216,47 @@ async fn main() -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
     Ok(())
 }
 
+fn handle_cli_commands() -> Option<String> {
+    env::args().nth(1)
+}
+
+async fn print_rooms_for_cli(
+    config: &ServerConfig,
+) -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
+    let rooms = db::load_room_configs(config)
+        .await
+        .map_err(std::io::Error::other)?;
+
+    println!(
+        "yourchat2 rooms source: {}",
+        if config.db_client.is_some() { "database" } else { "fallback" }
+    );
+    println!(
+        "{:<30} {:<8} {:<8} {:<8} {:<10}",
+        "name", "public", "min_age", "max_age", "password"
+    );
+    println!("{}", "-".repeat(72));
+    for room in rooms {
+        println!(
+            "{:<30} {:<8} {:<8} {:<8} {:<10}",
+            room.name,
+            if room.is_public { "yes" } else { "no" },
+            room.min_age
+                .map(|v| v.to_string())
+                .unwrap_or_else(|| "-".to_string()),
+            room.max_age
+                .map(|v| v.to_string())
+                .unwrap_or_else(|| "-".to_string()),
+            if room.password.as_deref().unwrap_or("").is_empty() {
+                "none"
+            } else {
+                "set"
+            },
+        );
+    }
+    Ok(())
+}
+
 async fn handle_client<S>(
     stream: S,
     state: Arc<RwLock<ChatState>>,