Fix Error Handling

src/main.rs

@@ -1,12 +1,13 @@
 use dotenvy::dotenv;
 use rocket::fs::NamedFile;
 use rocket::State;
+use rocket::http::Status;
 use reqwest::Client;
 use bytes::Bytes;
 
 static MII_RENDERER_URL: &str = "https://mii-renderer.bloxerhd.co.uk";
 
-async fn request_mii_render(client: &State<Client>, mii_data: &str, ext: &str) -> Option<Bytes> {
+async fn request_mii_render(client: &State<Client>, mii_data: &str, ext: &str) -> Result<Bytes, (Status, String)> {
     let req_str = format!("{MII_RENDERER_URL}/miis/image.{ext}?data={mii_data}");
 
     let response = client.get(req_str)
@@ -15,33 +16,35 @@ async fn request_mii_render(client: &State<Client>, mii_data: &str, ext: &str) -
 
     match response {
         Ok(res) => {
+            let status = res.status();
+
+            if !status.is_success() {
+                let text = res.text().await.unwrap_or_default();
+                println!("Error Returned from Renderer: ({}) {text}", status.as_u16());
+                return Err((Status::new(status.as_u16()), format!("Error Returned from Renderer: {text}")))
+            }
+            
             let bytes = res.bytes().await;
             match bytes {
                 Ok(bytes) => {
-                    Some(bytes)
+                    Ok(bytes)
                 },
-                Err(_) => {
-                    println!("Error Getting Response Bytes");
-                    None
+                Err(e) => {
+                    println!("Error Parsing Response Bytes: {e}");
+                    Err((Status::new(e.status().unwrap().as_u16()), "Error Parsing Response Bytes".into()))
                 }
             }
-        }
-        Err(err) => {
-            let status = match err.status() {
-                Some(err_status) => {
-                    err_status.to_string()
-                }
-                None => String::from("No Response")
-            };
-            println!("Error Requesting New Render - {}", status);
-            None
+        },
+        Err(e) => {
+            println!("Transport Error getting Render: {e}");
+            Err((Status::new(e.status().unwrap().as_u16()), "Transport Error getting Render".into()))
         }
     }
 }
 
 #[rocket::get("/<pid>/<path>")]
-pub async fn mii_render(pid: i32, path: &str, client: &State<Client>) -> Option<NamedFile> {
-    let ext = path.splitn(2, ".").nth(1)?;
+pub async fn mii_render(pid: i32, path: &str, client: &State<Client>) -> Result<NamedFile, (Status, String)> {
+    let ext = path.splitn(2, ".").nth(1).unwrap_or(".png");
 
     let mii_data = {
         let route = format!("https://account.spfn.net/api/v2/users/{pid}/mii");
@@ -50,16 +53,26 @@ pub async fn mii_render(pid: i32, path: &str, client: &State<Client>) -> Option<
             .await;
         
         let response = match response {
-            Ok(res) => res,
+            Ok(res) => {
+                let status = res.status();
+
+                if !status.is_success() {
+                    let text = res.text().await.unwrap_or_default();
+
+                    return Err((Status::new(status.as_u16()), format!("Error Returned from Renderer: {text}")))
+                }
+
+                res
+            },
             Err(e) => {
-                println!("Error Fetching Mii Data: {e}");
-                return None;
+                println!("Transport Error fetching Mii Data: {e}");
+                return Err(((Status::new(e.status().unwrap().as_u16())), "Transport Error fetching Mii Data".into()))
             }
         };
 
         let data: String = match response.json().await {
             Ok(data) => data,
-            Err(_) => return None,
+            Err(e) => return Err((Status::new(e.status().unwrap().as_u16()), "Error Parsing Json Response when fetching Mii Data".into())),
         };
 
         data
@@ -111,10 +124,10 @@ pub async fn mii_render(pid: i32, path: &str, client: &State<Client>) -> Option<
 
     let img = match NamedFile::open(img_path).await {
         Ok(img) => img,
-        Err(_) => return None
+        Err(_) => return Err((Status::InternalServerError, "Failed to Open Image File".into())),
     };
 
-    Some(img)
+    Ok(img)
 }
 
 #[rocket::launch]