Prevent overwriting existing documents.

src/main.rs

@@ -6,7 +6,7 @@ use axum::{
     RequestPartsExt, Router,
 };
 use clap::Parser;
-use morethantext::{ActionType, MoreThanText};
+use morethantext::{ActionType, ErrorType, MoreThanText};
 use std::{collections::HashMap, convert::Infallible};
 use tokio::{spawn, sync::mpsc::channel};
 use tower_cookies::{Cookie, CookieManagerLayer, Cookies};
@@ -104,7 +104,10 @@ async fn mtt_conn(
     });
     let reply = rx.recv().await.unwrap();
     let status = match reply.get_error() {
-        Some(_) => StatusCode::NOT_FOUND,
+        Some(err) => match err {
+            ErrorType::DocumentAlreadyExists => StatusCode::CONFLICT,
+            ErrorType::DocumentNotFound => StatusCode::NOT_FOUND,
+        },
         None => StatusCode::OK,
     };
     (status, reply.get_document())
@@ -122,7 +125,6 @@ mod servers {
     };
     use http_body_util::BodyExt;
     use serde_json::json;
-    use std::time::Duration;
     use tower::ServiceExt;
 
     #[tokio::test]
@@ -235,4 +237,28 @@ mod servers {
         let body = response.into_body().collect().await.unwrap().to_bytes();
         assert_eq!(body, content);
     }
+
+    #[tokio::test]
+    async fn cannot_add_duplicate_document_names() {
+        let app = create_app(MoreThanText::new()).await;
+        let document = json!({
+            "template": "something completely different."
+        });
+        let response = app
+            .clone()
+            .oneshot(
+                Request::builder()
+                    .method(Method::POST)
+                    .uri("/api/root")
+                    .body(document.to_string())
+                    .unwrap(),
+            )
+            .await
+            .unwrap();
+        assert_eq!(
+            response.status(),
+            StatusCode::CONFLICT,
+            "do not allow post to existing documents"
+        );
+    }
 }