name: Get the latest Runc release for main
on:
  schedule:
    - cron:  '50 7 * * 4'
  workflow_dispatch:

jobs:
  get-runc-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 Runc release version
        id: runc-latest-release
        run: |
          REMOTE='https://github.com/opencontainers/runc'
          # Get the newest runc version, including official releases
          # and rc versions. We need some sed tweaks like replacing
          # dots with underscores, adding trailing underscore, sort,
          # and trim the trailing underscore and replace other
          # underscores with dots again, so that sort -V can properly
          # sort "1.0.0" as newer than "1.0.0-rc95" and "0.0.2.1" as
          # newer than "0.0.2".
          versionCommitPair=( $(git ls-remote --tags "${REMOTE}" | grep 'refs/tags/v[a-z0-9._-]*$' | sed -e 's#^\([0-9a-fA-F]*\)[[:space:]]*refs/tags/v\(.*\)$#\2_ \1#g' -e 's/\./_/g' | sort --reverse --unique --version-sort --key=1,1 | sed -e 's/_ / /' -e 's/_/./g' | head --lines=1) )
          versionNew="${versionCommitPair[0]}"
          # Gentoo expects an underline between version and rc, so
          # "1.1.0-rc.1" becomes "1.1.0_rc.1".
          versionNew="${versionNew//-/_}"
          # Gentoo expects no separators between rc and the number, so
          # "1.1.0_rc.1" becomes "1.1.0_rc1"
          versionNew="${versionNew//rc./rc}"
          commitHash="${versionCommitPair[1]}"
          echo "VERSION_NEW=${versionNew}" >>"${GITHUB_OUTPUT}"
          echo "COMMIT_HASH=${commitHash}" >>"${GITHUB_OUTPUT}"
      - name: Set up Flatcar SDK
        id: setup-flatcar-sdk
        env:
          WORK_SCRIPTS_DIR: "${{ 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.runc-latest-release.outputs.VERSION_NEW }}
          COMMIT_HASH: ${{ steps.runc-latest-release.outputs.COMMIT_HASH }}
          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/runc-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: ${{ secrets.BOT_PR_TOKEN }}
          path: scripts
          branch: runc-${{ steps.runc-latest-release.outputs.VERSION_NEW }}-main
          base: main
          title: Upgrade Runc in main from ${{ steps.apply-patch-main.outputs.VERSION_OLD }} to ${{ steps.runc-latest-release.outputs.VERSION_NEW }}
          body: Subject says it all.
          labels: main