release.yml

name: Release

on:
  schedule:
    - cron: '0 0 * * 2'

jobs:

  Diff:
    runs-on: ubuntu-latest
    outputs:
      nb: ${{ steps.set-diff.outputs.nb }}
    steps:
      - uses: actions/checkout@v3
        with:
          persist-credentials: false
          fetch-depth: 0
          ref: 'stable'
      - name: "Check diff"
        id: set-diff
        run: |
          nb=$(git diff --shortstat stable..origin/main | cut -f2 -d ' ')
          echo "Find diff: ${nb}"
          echo "nb=${nb}" >> "${GITHUB_OUTPUT}"

  TagRaw:
    needs: Diff
    if: ${{ needs.Diff.outputs.nb > 0 }}
    runs-on: ubuntu-latest
    outputs:
      tag: ${{ steps.tag_label.outputs.tag }}
      changelog: ${{ steps.tag_raw.outputs.changelog }}
    steps:
      - uses: actions/checkout@v3
        with:
          persist-credentials: false
          fetch-depth: 0
      - name: 'Bump version and push tag - dry run'
        id: tag_raw
        uses: mathieudutour/github-tag-action@v6.1
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          release_branches: stable
          tag_prefix:
          dry_run: true
      - name: 'Format tag'
        id: tag_label
        env:
          TAG: ${{ steps.tag_raw.outputs.new_tag }}
        run: |
          TAG=$(echo "$TAG" | cut -f1 -d "-")
          echo "tag=$TAG" >> "$GITHUB_OUTPUT"

  Changelog:
    needs: [Diff, TagRaw]
    if: ${{ needs.Diff.outputs.nb > 0 }}
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
        with:
          persist-credentials: false
          fetch-depth: 0
      - name: 'Check file present'
        run: |
          [[ -f CHANGELOG.md ]] || touch CHANGELOG.md
      - uses: ruby/setup-ruby@v1
        with:
          ruby-version: 3 # Not needed with a .ruby-version file
          bundler-cache: true # runs 'bundle install' and caches installed gems automatically
      - name: 'Generate CHANGELOG'
        env:
          CHANGELOG_GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          gem install github_changelog_generator
          USER=$(echo "$GITHUB_REPOSITORY" | sed -e 's/\// /g' | awk '{print $1}')
          PROJECT=$(echo "$GITHUB_REPOSITORY" | sed -e 's/\// /g' | awk '{print $2}')
          echo "$USER $PROJECT"
          github_changelog_generator --user "$USER" --project "$PROJECT" --no-unreleased
      - name: 'Upload Artifact Changelog'
        uses: actions/upload-artifact@v3
        with:
          name: changelog-artifact
          path: CHANGELOG.md
          retention-days: 1

  Commit:
    needs: [Changelog, Diff]
    if: ${{ needs.Diff.outputs.nb > 0 }}
    runs-on: ubuntu-latest
    steps:
      # Get Data
      - name: 'Checkout'
        uses: actions/checkout@v3
        with:
          persist-credentials: false
          fetch-depth: 0
      - name: 'Download Artifact Changelog'
        uses: actions/download-artifact@v3
        with:
          name: changelog-artifact
      # Commit
      - name: 'Commit files'
        run: |
          git config --local user.email "$GITHUB_EMAIL"
          git config --local user.name "$GITHUB_USERNAME"
          git add .
          git commit -m "doc(changelog): update"
        env:
          GITHUB_USERNAME: guillaume-gricourt
          GITHUB_EMAIL: guipagui@gmail.com
      - name: 'Push changes'
        uses: ad-m/github-push-action@master
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          branch: ${{ github.ref }}
      - name: 'Update main branch'
        uses: ad-m/github-push-action@master
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          branch: main

  Tag:
    needs: [Commit, Diff, TagRaw]
    if: ${{ needs.Diff.outputs.nb > 0 }}
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
        with:
          persist-credentials: false
          fetch-depth: 0
      - name: 'Bump version and push tag'
        id: tag
        uses: mathieudutour/github-tag-action@v6.1
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          release_branches: stable
          custom_tag: ${{ needs.TagRaw.outputs.tag }}
          tag_prefix:

  Release:
    needs: [Diff, TagRaw, Tag]
    if: ${{ needs.Diff.outputs.nb > 0 }}
    runs-on: ubuntu-latest
    steps:
      - name: 'Create Release'
        uses: softprops/action-gh-release@v1
        with:
          tag_name: ${{ needs.TagRaw.outputs.tag }}
          body: ${{ needs.TagRaw.outputs.changelog }}