From d2578b206acb37ac87117e24077876624725f896 Mon Sep 17 00:00:00 2001
From: Nils Pukropp <nils@narl.io>
Date: Thu, 19 Feb 2026 17:28:51 +0100
Subject: [PATCH] implemented admin custom image upload on flavor detail page

---
 backend/api/serializers.py                  |  5 +++-
 frontend/src/pages/flavors/FlavorDetail.tsx | 29 +++++++++++++++++++++
 2 files changed, 33 insertions(+), 1 deletion(-)

diff --git a/backend/api/serializers.py b/backend/api/serializers.py
index 91affe4..14193b2 100644
--- a/backend/api/serializers.py
+++ b/backend/api/serializers.py
@@ -75,7 +75,10 @@ class FlavorSerializer(serializers.ModelSerializer):
 
     class Meta:
         model = Flavor
-        fields = ['id', 'name', 'category', 'category_name', 'category_slug', 'description', 'average_rating', 'followed_average_rating', 'user_rating', 'ratings', 'image_url', 'is_available', 'is_legacy', 'shop_url']
+        fields = ['id', 'name', 'category', 'category_name', 'category_slug', 'description', 'average_rating', 'followed_average_rating', 'user_rating', 'ratings', 'image_url', 'image', 'is_available', 'is_legacy', 'shop_url']
+        extra_kwargs = {
+            'image': {'write_only': True}
+        }
 
     def get_image_url(self, obj):
         if obj.image:
diff --git a/frontend/src/pages/flavors/FlavorDetail.tsx b/frontend/src/pages/flavors/FlavorDetail.tsx
index 44b7160..71f4bd3 100644
--- a/frontend/src/pages/flavors/FlavorDetail.tsx
+++ b/frontend/src/pages/flavors/FlavorDetail.tsx
@@ -86,6 +86,7 @@ const FlavorDetail: React.FC<FlavorDetailProps> = ({ adminMode }) => {
   
   // Product Edit state (Admin)
   const [isAdminEditing, setIsAdminEditing] = useState(false);
+  const [uploadingImage, setUploadingImage] = useState(false);
   const [editFlavorData, setEditFlavorData] = useState({
       name: '',
       description: '',
@@ -148,6 +149,26 @@ const FlavorDetail: React.FC<FlavorDetailProps> = ({ adminMode }) => {
       }
   };
 
+  const handleImageUpload = async (e: React.ChangeEvent<HTMLInputElement>) => {
+      const file = e.target.files?.[0];
+      if (!file) return;
+
+      const formData = new FormData();
+      formData.append('image', file);
+
+      try {
+          setUploadingImage(true);
+          await api.patch(`flavors/${id}/`, formData, {
+              headers: { 'Content-Type': 'multipart/form-data' }
+          });
+          fetchFlavor();
+      } catch (err) {
+          alert('Image upload failed');
+      } finally {
+          setUploadingImage(false);
+      }
+  };
+
   const handleRatingSubmit = async (e: React.FormEvent) => {
       e.preventDefault();
       if (!newScore) {
@@ -337,6 +358,14 @@ const FlavorDetail: React.FC<FlavorDetailProps> = ({ adminMode }) => {
                                     value={editFlavorData.shop_url} 
                                     onChange={(e) => setEditFlavorData({...editFlavorData, shop_url: e.target.value})} 
                                   />
+                                  
+                                  <Box>
+                                      <Button variant="outlined" component="label" size="small" fullWidth disabled={uploadingImage}>
+                                          {uploadingImage ? 'Uploading...' : 'Upload Custom Image'}
+                                          <input type="file" hidden accept="image/*" onChange={handleImageUpload} />
+                                      </Button>
+                                  </Box>
+
                                   <FormControlLabel 
                                     control={<Switch checked={editFlavorData.is_available} onChange={(e) => setEditFlavorData({...editFlavorData, is_available: e.target.checked})} />} 
                                     label="In Stock"