name: Get the latest Docker release for main
on:
  schedule:
    - cron:  '35 7 * * 3'
  workflow_dispatch:

jobs:
  get-docker-release:
    runs-on: ubuntu-latest
    steps:
      - name: Check out scripts
        uses: actions/checkout@v3
        with:
          token: ${{ secrets.BOT_PR_TOKEN }}
          path: scripts
      - name: Figure out latest Docker release version
        id: docker-latest-release
        run: |
          versionCommitPairMoby=( $(git ls-remote --tags https://github.com/moby/moby | grep 'refs/tags/v[0-9]*\.[0-9]*\.[0-9]*$' | sed -e 's#^\([0-9a-fA-F]*\)[[:space:]]*refs/tags/v\(.*\)$#\2 \1#g' | sort --reverse --unique --version-sort | head --lines 1) )
          commitHashCLI=$(git ls-remote --tags https://github.com/docker/cli | grep 'refs/tags/v'"${versionCommitPairMoby[0]}"'$' | cut -f1)

          echo "VERSION_NEW=${versionCommitPairMoby[0]}" >>"${GITHUB_OUTPUT}"
          echo "COMMIT_HASH_MOBY=${versionCommitPairMoby[1]}" >>"${GITHUB_OUTPUT}"
          echo "COMMIT_HASH_CLI=${commitHashCLI}" >>"${GITHUB_OUTPUT}"
      - name: Set up Flatcar SDK
        id: setup-flatcar-sdk
        env:
          WORK_SCRIPTS_DIR: "${{ github.workspace }}/scripts"
          CHANNEL: main
        run: scripts/.github/workflows/setup-flatcar-sdk.sh
      - name: Apply patch for main
        id: apply-patch-main
        env:
          GHA_SCRIPTS_DIR: "${{ github.workspace }}/scripts"
          WORK_SCRIPTS_DIR: "${{ github.workspace }}/scripts"
          VERSION_NEW: ${{ steps.docker-latest-release.outputs.VERSION_NEW }}
          COMMIT_HASH_MOBY: ${{ steps.docker-latest-release.outputs.COMMIT_HASH_MOBY }}
          COMMIT_HASH_CLI: ${{ steps.docker-latest-release.outputs.COMMIT_HASH_CLI }}
          PACKAGES_CONTAINER: ${{ steps.setup-flatcar-sdk.outputs.PACKAGES_CONTAINER }}
          SDK_NAME: ${{ steps.setup-flatcar-sdk.outputs.SDK_NAME }}
          TARGET_BRANCH: main
        run: scripts/.github/workflows/docker-apply-patch.sh
      - name: Create pull request for main
        uses: peter-evans/create-pull-request@v5
        if: steps.apply-patch-main.outputs.UPDATE_NEEDED == 1
        with:
          token: ${{ secrets.BOT_PR_TOKEN }}
          path: scripts
          branch: docker-${{ steps.docker-latest-release.outputs.VERSION_NEW }}-main
          base: main
          title: Upgrade Docker in main from ${{ steps.apply-patch-main.outputs.VERSION_OLD }} to ${{ steps.docker-latest-release.outputs.VERSION_NEW }}
          body: Subject says it all.
          labels: main