ci(pages_cleanup): remove dirs that don't have existing related branch

.github/workflows/pages_cleanup.yml

@@ -18,13 +18,30 @@ jobs:
           ref: gh-pages
           fetch-depth: 0
 
-      - name: Delete directories older than 1 year
+      - name: Delete directories that don't have existing branch
         run: |
-          for dir in $(find . -mindepth 1 -maxdepth 2 -type d -not -path '*/\.*'); do
-            if ! git log -1 --since="1 year ago" -- "$dir" | grep -q .; then
-              echo "Deleting $dir"
-              rm -rf "$dir"
-            fi
+          branches=( $(git branch -r | grep origin | grep -v HEAD | sed 's|origin/||') )
+          declare -p branches
+
+          find . -mindepth 1 -maxdepth 2 -type d -not -path '*/\.*' | while read -r dir; do
+              path="${dir#./}"
+
+              if [[ " ${branches[*]} " =~ " $path " ]]; then
+                  continue
+              fi
+
+              keep_parent=false
+              for branch in "${branches[@]}"; do
+                  if [[ "$branch" == "$path/"* ]]; then
+                      keep_parent=true
+                      break
+                  fi
+              done
+
+              if ! $keep_parent; then
+                  echo "Deleting $dir"
+                  rm -rf "$dir"
+              fi
           done
 
       - name: Commit and push