#
# ACCESS_TOKEN - Personal Access Token with "public_repo" permission
#
#
# Note: This action will not run on all file changes!
# Some file extensions will not trigger an action run,
# but they will be synced the next time a file is changed.
# .png and .jpg files do not trigger runs.
# .md, .txt, and .html files do.
# I have not tested any others.
# If we could set this up to trigger on a push to rusefi.wiki, that
# would be optimal, but unfortunately that does not seem to be possible.
#
# the opposite sync is https://github.com/rusefi/rusefi_documentation/blob/master/.github/workflows/sync-wiki.yaml
#

name: Sync Wiki

on: gollum

jobs:
  sync:
    runs-on: ubuntu-latest
    if: ${{ github.actor != 'actions-user' }}

    steps:
    - name: Check out docs repo
      uses: actions/checkout@v3
      with:
        fetch-depth: 0
        repository: rusefi/rusefi_documentation
        persist-credentials: false

    - name: Merge from rusefi/wiki
      run: |
        git remote add best-wiki-git https://github.com/rusefi/rusefi.wiki.git
        git fetch best-wiki-git
        if [ $(git diff best-wiki-git/master | wc -l) -eq 0 ]; then
        echo "skip=true" >> $GITHUB_ENV
        exit 0
        fi
        git show --name-only  best-wiki-git/master
        git config --local user.email "action@github.com"
        git config --local user.name "GitHub Action"
        # merge, but don't commit the merge
        git merge --no-ff --no-commit best-wiki-git/master
        # unstage the file
        #    TL;DR bad magic github security policy that causes issues when someone commits a changed workflow file to rusefi/rusefi.wiki.git
        #    As a workaround we undo any changes to workflow files.
        git reset HEAD .github/workflows/sync-wiki2.yaml .github/workflows/sync-wiki3.yaml
        # revert the file to its original state
        git checkout -- .github/workflows/sync-wiki2.yaml .github/workflows/sync-wiki3.yaml
        # commit the merge
        git commit -m "merge rusEFI wiki"

    - name: Push changes to rusefi_documentation technical wiki
      uses: ad-m/github-push-action@master
      if: ${{ env.skip != 'true' }}
      with:
        repository: rusefi/rusefi_documentation
        github_token: ${{ secrets.ACCESS_TOKEN }}
        branch: master