update-version.yml

name: Update Version

on:
  schedule:
    - cron: '0 8 * * *'
  workflow_dispatch:

permissions:
  contents: write
  pull-requests: write

env:
  DEPENDENCY_NAME: Samba
  DOCKERFILE_PATH: samba/Dockerfile
  DOCKERFILE_VERSION_KEY: SAMBA_VERSION
  DOCKERFILE_OS_VERSION_KEY: ALPINE_VERSION

jobs:
  update-version:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v5
      - name: Configure Git user
        run: |
          git config user.name github-actions[bot]
          git config user.email 41898282+github-actions[bot]@users.noreply.github.com
      - name: Login to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKER_HUB_USERNAME }}
          password: ${{ secrets.DOCKER_HUB_ACCESS_TOKEN }}
      - name: Get current version
        id: get-current
        run: |
          get_version() { grep "ARG $1=" "$DOCKERFILE_PATH" | cut -d '=' -f2 | tr -d '[:space:]'; }
          version="$(get_version "$DOCKERFILE_VERSION_KEY")"
          os_version="$(get_version "$DOCKERFILE_OS_VERSION_KEY")"
          
          echo "Current version: $version (os: $os_version)"
          echo "version=$version" >> $GITHUB_OUTPUT
          echo "os_version=$os_version" >> $GITHUB_OUTPUT
      - name: Get latest version
        id: get-latest
        run: |
          version="$(docker run --rm alpine sh -c "apk --no-cache --no-progress update >/dev/null && apk upgrade >/dev/null && apk search -v -e samba | tr ' ' '\n' | grep 'samba-' | cut -d'-' -f2-")"
          if [ -z "$version" ]; then
            echo "Failed to fetch latest version" >&2
            exit 1
          fi
          
          # Retrieve OS version
          os_version="$(docker run --rm alpine cat /etc/alpine-release)"
          if [ -z "$os_version" ]; then
              echo "Failed to fetch Alpine version" >&2
              exit 1
          fi
          
          echo "Latest version: $version (os: $os_version)"
          echo "version=$version" >> $GITHUB_OUTPUT
          echo "os_version=$os_version" >> $GITHUB_OUTPUT
      - name: Check if update is needed
        id: check
        run: |
          if [ "${{ steps.get-latest.outputs.version }}" = "${{ steps.get-current.outputs.version }}" ] \
            && [ "${{ steps.get-latest.outputs.os_version }}" = "${{ steps.get-current.outputs.os_version }}" ]; then
              echo "up_to_date=true" >> $GITHUB_OUTPUT
            else
              echo "up_to_date=false" >> $GITHUB_OUTPUT
          fi
      - name: Pull request metadata
        if: steps.check.outputs.up_to_date == 'false'
        id: pr
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          version="${{ steps.get-latest.outputs.version }}"
          title="Update $DEPENDENCY_NAME to v$version (os: ${{ steps.get-latest.outputs.os_version }})"
          prs=$(gh pr list --search "$title" --json title | jq length)
          if [ "$prs" -gt 0 ]; then
            echo "exists=true" >> $GITHUB_OUTPUT
          else
            echo "exists=false" >> $GITHUB_OUTPUT
          fi
          echo "title=$title" >> $GITHUB_OUTPUT
          echo "body=Bumps $DEPENDENCY_NAME to version $version" >> $GITHUB_OUTPUT
          echo "head_branch=update/v$version" >> $GITHUB_OUTPUT
          echo "base_branch=main" >> $GITHUB_OUTPUT
      - name: Create Pull Request
        if: steps.pr.outputs.exists == 'false' && steps.check.outputs.up_to_date == 'false'
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          version="${{ steps.get-latest.outputs.version }}"
          branch="${{ steps.pr.outputs.head_branch }}"
          git checkout -b "$branch"
          update_dockerfile_version() { sed -i "s|ARG $1=.*|ARG $1=$2|" "$DOCKERFILE_PATH"; }
          update_dockerfile_version "$DOCKERFILE_VERSION_KEY" "$version"
          update_dockerfile_version "$DOCKERFILE_OS_VERSION_KEY" "${{ steps.get-latest.outputs.os_version }}"
          sed -i -E "s|-\s*\[\`[0-9]+\`,\s*\`[0-9.]+\`,\s*\`latest\` \(${DOCKERFILE_PATH}\)\]|- [\`$(echo "$version" | cut -d'.' -f1,1)\`, \`$(echo "$version" | cut -d'.' -f1,2)\`, \`latest\` (${DOCKERFILE_PATH})]|" README.md
          git commit -am "Update version to $version"
          git push origin "$branch"
          gh pr create --title "${{ steps.pr.outputs.title }}" \
            --body "${{ steps.pr.outputs.body }}" \
            --base "${{ steps.pr.outputs.base_branch }}" --head "$branch"