return json on 402 404 and 500 status

nevmes-core/src/i2p.rs

@@ -89,7 +89,7 @@ pub async fn start() {
     find_tunnels().await;
     { 
         tokio::spawn(async move { 
-            let tick: std::sync::mpsc::Receiver<()> = schedule_recv::periodic_ms(60000);
+            let tick: std::sync::mpsc::Receiver<()> = schedule_recv::periodic_ms(600000);
             loop {
                 tick.recv().unwrap();
                 check_connection().await;

nevmes-core/src/reqres.rs

@@ -879,3 +879,18 @@ impl Default for Jwp {
         }
     }
 }
+
+/// For handling 402, 404 and 500 error responses
+#[derive(Serialize, Deserialize, Debug)]
+#[serde(crate = "rocket::serde")]
+pub struct ErrorResponse {
+    pub error: String,
+}
+
+impl Default for ErrorResponse {
+    fn default() -> Self {
+        ErrorResponse {
+            error: utils::empty_string(),
+        }
+    }
+}

src/main.rs

@@ -1,10 +1,31 @@
 #[macro_use]
 extern crate rocket;
+use rocket::http::Status;
+use rocket::serde::json::Json;
+use rocket::response::status::Custom;
 
 use nevmes::*;
 use nevmes_core::*;
 
-// The only changes in here should be mounting new controller methods
+#[catch(402)]
+fn payment_required() -> Custom<Json<reqres::ErrorResponse>> {
+    Custom(Status::PaymentRequired, 
+        Json(reqres::ErrorResponse { error: String::from("Payment required") }))
+}
+
+#[catch(404)]
+fn not_found() -> Custom<Json<reqres::ErrorResponse>> {
+    Custom(Status::NotFound, 
+        Json(reqres::ErrorResponse { error: String::from("Resource does not exist") }))
+}
+
+#[catch(500)]
+fn internal_error() -> Custom<Json<reqres::ErrorResponse>> {
+    Custom(Status::InternalServerError, 
+        Json(reqres::ErrorResponse { error: String::from("Internal server error") }))
+}
+
+// The only changes below here should be mounting new controller methods
 #[launch]
 async fn rocket() -> _ {
     let config = rocket::Config {
@@ -16,6 +37,7 @@ async fn rocket() -> _ {
     env_logger::init();
     utils::start_up().await;
     rocket::custom(&config)
+        .register("/", catchers![internal_error, not_found, payment_required])
         .mount("/invoice", routes![controller::gen_invoice])
         .mount("/message/rx", routes![controller::rx_message])
         .mount("/prove", routes![controller::gen_jwp])