debug build cors rules

Cargo.toml

@@ -1,2 +1,3 @@
 [workspace]
+resolver = "2"
 members = ["crates/backend"]

crates/backend/Cargo.toml

@@ -2,3 +2,7 @@
 name = "backend"
 version = "0.1.0"
 edition = "2021"
+
+[dependencies]
+actix-web = "4"
+actix-cors = "0.7"

crates/backend/src/main.rs

@@ -1 +1,23 @@
-fn main() {}
+use actix_web::{web, App, HttpResponse, HttpServer, Responder};
+
+#[actix_web::main]
+async fn main() -> std::io::Result<()> {
+    #[cfg(debug_assertions)]
+    println!("Running debug build -> enabling permissive CORS");
+
+    HttpServer::new(move || {
+        let cors = if cfg!(debug_assertions) {
+            actix_cors::Cors::permissive()
+        } else {
+            actix_cors::Cors::default()
+        };
+        App::new().wrap(cors).route("/", web::get().to(index))
+    })
+    .bind(("127.0.0.1", 8080))?
+    .run()
+    .await
+}
+
+async fn index() -> impl Responder {
+    HttpResponse::Ok().body("API Test Response")
+}