add the API routes with axum

src/api.rs

@@ -0,0 +1,33 @@
+use axum::{
+    http::StatusCode,
+    response::{IntoResponse, Response},
+};
+/**
+GET /questions (empty body; return JSON)
+POST /questions (JSON body; return HTTP status code)
+PUT /questions/:questionId (JSON body, return HTTP status code)
+DELETE /questions/:questionId (empty body; return HTTP status code)
+POST /answers (www-url-encoded body; return HTTP status code)
+ *
+ */
+pub async fn get_questions() -> Response {
+    //TODO
+    (StatusCode::OK, " Get Questions").into_response()
+}
+
+pub async fn post_questions() -> Response {
+    //TODO
+    (StatusCode::CREATED, "Post Questions").into_response()
+}
+pub async fn put_questions() -> Response {
+    //TODO
+    (StatusCode::CREATED, "Put Questions..").into_response()
+}
+pub async fn delete_questions() -> Response {
+    //TODO
+    (StatusCode::OK, "Delete Questions..").into_response()
+}
+pub async fn post_answers() -> Response {
+    //TODO
+    (StatusCode::CREATED, "Post Answers..").into_response()
+}

src/main.rs

@@ -1,8 +1,8 @@
-
+mod api;
 use axum::{
     http::StatusCode,
     response::{IntoResponse, Response},
-    routing::get,
+    routing::{delete, get, post, put},
     Router,
 };
 use std::net::SocketAddr;
@@ -13,8 +13,15 @@ async fn handle() -> Response {
 
 #[tokio::main]
 async fn main() {
-    let app = Router::new().route("/", get(handle));
     let ip = SocketAddr::new([127, 0, 0, 1].into(), 3000);
     let listener = tokio::net::TcpListener::bind(ip).await.unwrap();
+    let apis = Router::new()
+        .route("/questions", get(api::get_questions))
+        .route("/questions", post(api::post_questions))
+        .route("/questions/:id", put(api::put_questions))
+        .route("/questions", delete(api::delete_questions))
+        .route("/answers", post(api::post_answers));
+    let app = Router::new().route("/", get(handle)).merge(apis);
+
     axum::serve(listener, app).await.unwrap();
 }