image checking

.github/workflows/check-mod.yml

@@ -12,13 +12,18 @@ jobs:
       - name: Check out repository
         uses: actions/checkout@v3
 
+      - name: Install ImageMagick
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y imagemagick
+
       - name: Check Required Files
         run: |
-          # This for-loop iterates over each directory in mods/
-          # to ensure description.md and meta.json exist.
           for dir in mods/*/; do
+            if [ -d "$dir" ]; then
               MOD_DIR="$(basename "$dir")"
 
+              # Ensure description.md and meta.json exist
               if [ ! -f "$dir/description.md" ]; then
                 echo "Error: Missing description.md in $MOD_DIR"
                 exit 1
@@ -28,6 +33,29 @@ jobs:
                 echo "Error: Missing meta.json in $MOD_DIR"
                 exit 1
               fi
+            fi
+          done
+
+      - name: Check Thumbnail Dimensions
+        run: |
+          for dir in mods/*/; do
+            if [ -d "$dir" ]; then
+              MOD_DIR="$(basename "$dir")"
+              THUMBNAIL="$dir/thumbnail.png"
+
+              if [ -f "$THUMBNAIL" ]; then
+                # Extract width and height using ImageMagick
+                DIMENSIONS=$(identify -format "%wx%h" "$THUMBNAIL")
+                WIDTH=$(echo "$DIMENSIONS" | cut -dx -f1)
+                HEIGHT=$(echo "$DIMENSIONS" | cut -dx -f2)
+
+                # If thumbnail exceeds 1920x500, exit with error
+                if [ "$WIDTH" -gt 1920 ] || [ "$HEIGHT" -gt 500 ]; then
+                  echo "Error: Thumbnail in $MOD_DIR exceeds the 1920×500 recommended size."
+                  exit 1
+                fi
+              fi
+            fi
           done
 
       - name: Validate JSON Format

README.md

@@ -45,7 +45,7 @@ This file stores essential metadata in JSON format. **Make sure you adhere to th
 - **downloadURL**: A direct link to the latest version of your released mod. (Can be same as `repo` if no separate download link exists.)
 
 ### 3. thumbnail.png (Optional)
-If included, this image will appear alongside your mod in the index. Recommended size is 512×512 pixels or smaller.
+If included, this image will appear alongside your mod in the index. Maximum and recommended size is 1920 × 500 pixels.
 
 ## How to Publish