Tidy modules on renovate branches

Signed-off-by: Paul Meyer <49727155+katexochen@users.noreply.github.com>

.github/workflows/test-tidy.yml

@@ -40,6 +40,28 @@ jobs:
           echo "submods=${mods}" >> $GITHUB_OUTPUT
 
       - name: Go tidy check
+        id: tidycheck
         uses: katexochen/go-tidy-check@45731e0013a976d5d616d79007c7ba52de6ce542 # tag=v1.0.2
         with:
           modules: ${{ steps.submods.outputs.submods }}
+
+      # The following steps are only executed if the previous tidy check failed
+      # and the action runs on an renovat branche. In this case, we tidy all
+      # modules again and commit the changes, so the user doesn't need to do it.
+
+      - name: Tidy modules on renovate branches
+        if: ${{ failure() && (steps.tidycheck.conclusion == 'failure') && startsWith(github.head_ref, 'renovate/') }}
+        shell: bash
+        run: |
+          for mod in ${{ steps.submods.outputs.submods }}; do
+            (cd $mod; go mod tidy)
+          done
+
+      - name: Push changes
+        if: ${{ failure() && (steps.tidycheck.conclusion == 'failure') && startsWith(github.head_ref, 'renovate/') }}
+        shell: bash
+        run: |
+          git config --global user.name "${{ github.actor }}"
+          git config --global user.email "${{ github.actor }}@users.noreply.github.com"
+          git commit -am "[bot] Tidy all modules"
+          git push