WIP: Add sync check

Author: tytan652

.github/actions/sync-shared-fsdk-files/action.yaml

@@ -0,0 +1,43 @@
+name: Sync shared Freedesktop SDK files
+inputs:
+  fsdk-element:
+    description: Freedesktop SDK BuildStream element
+    default: freedesktop-sdk.bst
+outputs:
+  fsdk-element:
+    description: Freedesktop SDK BuildStream element
+    value: ${{ inputs.fsdk-element }}
+  version:
+    description: Version of Freedesktop SDK
+    value: ${{ steps.sync.outputs.version }}
+runs:
+  using: composite
+  steps:
+    - name: Parse ref
+      id: parse-ref
+      shell: bash
+      run: |
+        python .github/scripts/parse-bst-git-tag-ref.py elements/${{ inputs.fsdk-element }}
+
+    - name: Sync shared files
+      id: sync
+      shell: bash
+      run: |
+        git clone --branch=${{ steps.parse-ref.outputs.tag }} --depth=1 https://gitlab.com/freedesktop-sdk/freedesktop-sdk
+
+        for file in elements/plugins/*; do
+          if [ -f "freedesktop-sdk/$file" ]; then
+            cp freedesktop-sdk/$file $file
+          else
+            rm $file
+          fi
+        done
+
+        cp freedesktop-sdk/include/strip.yml include/strip.yml
+        sed -i "s/strip-binaries/strip-binaries-base/g" include/strip.yml
+
+        tag="${{ steps.parse-ref.outputs.tag }}"
+        prefix="freedesktop-sdk-"
+        version="${tag#$prefix}"
+
+        echo "version=$version" >> $GITHUB_OUTPUT

.github/workflows/check-code.yaml

@@ -29,3 +29,37 @@ jobs:
         uses: astral-sh/ruff-action@v3
         with:
           args: "format --check"
+
+  fsdk:
+    name: Re-sync shared files
+    runs-on: ubuntu-24.04
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Check for Changed Files
+        id: check
+        uses: obsproject/obs-studio/.github/actions/check-changes@19646f9434857120625524fbf15f254efa1afecc
+        with:
+          checkGlob: "'${{ env.WORKFLOW_FILEPATH }}' 'elements/plugins/*' 'elements/freedesktop-sdk.bst' 'include/strip.yml'"
+          diffFilter: 'ACM'
+
+      - name: Sync shared Freedesktop SDK files
+        id: sync
+        if: ${{ fromJSON(steps.check.outputs.hasChangedFiles) }}
+        uses: ./.github/actions/sync-shared-fsdk-files
+
+      - name: Check files have changed
+        if: ${{ !cancelled() && fromJSON(steps.check.outputs.hasChangedFiles) }}
+        shell: bash
+        run: |
+          : Check if the element has changed
+
+          if [[  -z "$(git status --porcelain" ]]; then
+            echo "::notice::Files are in sync"
+          else
+            echo "::error::Files are not in sync"
+            exit 2
+          fi