refactor upload image endpoint

src/pages/api/image/index.ts

@@ -13,7 +13,15 @@ export async function POST({ request }: APIContext) {
         const formData = await request.formData();
         const file = formData.get('image');
         
-        if (!file || !(file instanceof File)) {
+        return await writeImage(file)
+
+    } catch (error) {
+        return httpResponse({ error: `Failed to upload image, ${error}` }, 500);
+    }
+}
+
+async function writeImage(file) {
+    if (!file || !(file instanceof File)) {
             return httpResponse({ error: 'No image provided' }, 400);
         }
         
@@ -28,10 +36,6 @@ export async function POST({ request }: APIContext) {
         // Save file
         const buffer = Buffer.from(await file.arrayBuffer());
         await fs.writeFile(filepath, buffer);
-        
-        return httpResponse({ url: `/api/image/${filename}`}, 201);
 
-    } catch (error) {
-        return httpResponse({ error: `Failed to upload image, ${error}` }, 500);
-    }
-}
+        return httpResponse({ url: `/api/image/${filename}`}, 201);
+}