fix: restructure the logic

src/lib.rs

@@ -1,29 +1,4 @@
-use actix_web::dev::Server;
+pub mod configuration;
-use actix_web::{web, App, HttpResponse, HttpServer};
+pub mod routes;
-use std::net::TcpListener;
+pub mod startup;
 
-#[derive(serde::Deserialize)]
-struct FormData {
-    email: String,
-    name: String,
-}
-
-async fn healthcheck_route() -> HttpResponse {
-    HttpResponse::Ok().finish()
-}
-
-async fn subscribe_route(_form: web::Form<FormData>) -> HttpResponse {
-    HttpResponse::Ok().finish()
-}
-
-pub fn run(listener: TcpListener) -> Result<Server, std::io::Error> {
-    let server = HttpServer::new(|| {
-        App::new()
-            .route("/health_check", web::get().to(healthcheck_route))
-            .route("/subscribe", web::post().to(subscribe_route))
-    })
-    .listen(listener)?
-    .run();
-
-    Ok(server)
-}

src/main.rs

@@ -1,12 +1,12 @@
 use std::net::TcpListener;
 
-use email_newsletter_api::run;
+use email_newsletter_api::startup;
 
 #[tokio::main]
-async fn main() -> Result<(), std::io::Error>{
+async fn main() -> Result<(), std::io::Error> {
     let listener = TcpListener::bind("127.0.0.1:8000").expect("Failed to bind to port 8000");
 
     // Move the error up the call stack
     // otherwise await for the HttpServer
-    run(listener)?.await
+    startup::run(listener)?.await
 }

src/routes/health_check.rs

@@ -0,0 +1,5 @@
+use actix_web::HttpResponse;
+
+pub async fn healthcheck_route() -> HttpResponse {
+    HttpResponse::Ok().finish()
+}

src/routes/mod.rs

@@ -0,0 +1,5 @@
+mod health_check;
+mod subscriptions;
+
+pub use health_check::*;
+pub use subscriptions::*;

src/routes/subscriptions.rs

@@ -0,0 +1,11 @@
+use actix_web::{web, HttpResponse};
+
+#[derive(serde::Deserialize)]
+pub struct FormData {
+    email: String,
+    name: String,
+}
+
+pub async fn subscribe_route(_form: web::Form<FormData>) -> HttpResponse {
+    HttpResponse::Ok().finish()
+}

src/startup.rs

@@ -0,0 +1,16 @@
+use crate::routes::{healthcheck_route, subscribe_route};
+use actix_web::dev::Server;
+use actix_web::{web, App, HttpServer};
+use std::net::TcpListener;
+
+pub fn run(listener: TcpListener) -> Result<Server, std::io::Error> {
+    let server = HttpServer::new(|| {
+        App::new()
+            .route("/health_check", web::get().to(healthcheck_route))
+            .route("/subscribe", web::post().to(subscribe_route))
+    })
+    .listen(listener)?
+    .run();
+
+    Ok(server)
+}

tests/test_utils.rs

@@ -11,7 +11,7 @@ pub fn spawn_app() -> String {
 
     let port = listener.local_addr().unwrap().port();
 
-    let server = email_newsletter_api::run(listener).expect("Failed to bind address");
+    let server = email_newsletter_api::startup::run(listener).expect("Failed to bind address");
 
     /* `tokio::spawn(/*async task*/)` will spawn an async task to be run.
     We can continue executing other code concurrently while `task` runs in the background.