refactoring: new structure and mailer

src/server/routes/api/queue_length.rs

@@ -0,0 +1,17 @@
+use axum::{extract::State, http::StatusCode, response::IntoResponse};
+use tracing::info;
+
+use crate::{error::ApiError, server::AppState};
+
+pub async fn queue_length_handler(
+    State(state): State<AppState>,
+) -> Result<impl IntoResponse, ApiError> {
+    info!("Getting queue length");
+
+    let queue_length = state.rabbitmq_consumer.get_queue_length().await?;
+
+    info!("Queue length: {}", queue_length);
+
+    // Return the queue length with a 200 OK status
+    Ok((StatusCode::OK, queue_length.to_string()))
+}