update error messages in GET /images/<image>

src/main.rs

@@ -153,6 +153,7 @@ async fn login(
         }
     }
 }
+
 #[post("/logout")]
 async fn logout(cookies: &CookieJar<'_>) -> status::Custom<&'static str> {
     match cookies.get_private("token") {
@@ -323,7 +324,10 @@ async fn toggleperms(
 }
 
 #[get("/images/<image>")]
-async fn get_image(image: String, mut db: Connection<Db>) -> Result<NamedFile, Status> {
+async fn get_image(
+    image: String,
+    mut db: Connection<Db>,
+) -> Result<NamedFile, status::Custom<&'static str>> {
     let mut split = image.split('.').collect::<Vec<&str>>();
     let format = split.pop().unwrap();
     let image = split.join(".");
@@ -351,13 +355,21 @@ async fn get_image(image: String, mut db: Connection<Db>) -> Result<NamedFile, S
                     Ok(file)
                 }
                 Err(why) => Err(match &why.to_string()[..] {
-                    "Format error decoding Png: Invalid PNG signature." => Status::NotAcceptable,
-                    _ => Status::InternalServerError,
+                    "Format error decoding Png: Invalid PNG signature." => {
+                        status::Custom(Status::NotAcceptable, "That file isn't an image.")
+                    }
+                    _ => status::Custom(Status::InternalServerError, "Unknown decoding error"),
                 }),
             },
-            Err(_) => Err(Status::NotFound),
+            Err(_) => Err(status::Custom(
+                Status::InternalServerError,
+                "Unknown decoding error",
+            )),
         },
-        Err(_) => Err(Status::ImATeapot),
+        Err(_) => Err(status::Custom(
+            Status::InternalServerError,
+            "File not found",
+        )),
     }
 }