create_release.yml

name: 'Create release'
on:
    push:
        branches:
            - main

jobs:
    skip:
        name: Check release skip
        runs-on: ubuntu-latest
        if: "(! contains(github.event.head_commit.message, '[release skip]')) && (! contains(github.event.head_commit.message, 'Initial commit'))"
        steps:
            - run: echo "${{ github.event.head_commit.message }}"
    create_release:
        runs-on: ubuntu-latest
        needs: [skip]
        steps:
            - uses: actions/checkout@v2
              with:
                  fetch-depth: 0
            - name: 'Get latest name'
              uses: pozetroninc/github-action-get-latest-release@master
              id: get-latest
              continue-on-error: true
              with:
                  repository: ${{ github.repository }}
                  excludes: 'prerelease, draft'
            - name: 'Check first release'
              id: check-latest
              run: |
                  if [ -n "${{ steps.get-latest.outputs.release }}" ];then \
                    echo "::set-output name=version::${{ steps.get-latest.outputs.release }}"; \
                    echo "::set-output name=from::${{ steps.get-latest.outputs.release }}"; \
                    echo "::set-output name=skip::false"; \
                  else
                    echo "::set-output name=version::1.0.0"; \
                    echo "::set-output name=from::4b825dc642cb6eb9a060e54bf8d69288fbee4904"; \
                    echo "::set-output name=skip::true"; \
                  fi
            - name: 'Generate changelog'
              uses: 'slime-hatena/lerna-changelog-action@main'
              id: changelog
              with:
                  GITHUB_AUTH: '${{ secrets.GITHUB_TOKEN }}'
                  tag_from: '${{ steps.check-latest.outputs.from }}'
                  tag_to: 'origin/main'
            - name: 'Judge the next version'
              id: judge-next-version
              run: |
                  echo "::set-output name=major::false";
                  echo "::set-output name=minor::false";
                  echo "::set-output name=patch::false";
                  if [ "${{ steps.check-latest.outputs.skip }}" = "false" ]; then
                    if [ -n "`echo "${{ steps.changelog.outputs.markdown }}" | grep 'Breaking Change';`" ] ; then
                      echo "::set-output name=major::true";
                    elif [ -n "`echo "${{ steps.changelog.outputs.markdown }}" | grep 'Feature'`" ] ; then
                      echo "::set-output name=minor::true";
                    else
                      echo "::set-output name=patch::true";
                    fi
                  fi
            - name: 'Calc next version'
              uses: 'slime-hatena/semantic-versioning-calculator-action@main'
              id: calc
              with:
                  version: '${{ steps.check-latest.outputs.version }}'
                  increment_major: '${{ steps.judge-next-version.outputs.major }}'
                  increment_minor: '${{ steps.judge-next-version.outputs.minor }}'
                  increment_patch: '${{ steps.judge-next-version.outputs.patch }}'
            - name: 'Create tag test'
              run: |
                  git tag ${{ steps.calc.outputs.version }}
                  git tag -d ${{ steps.calc.outputs.version }}
            - name: 'Create release'
              uses: softprops/action-gh-release@v1
              with:
                  name: 'Release ${{ steps.calc.outputs.version }}'
                  tag_name: ${{ steps.calc.outputs.version }}
                  body: ${{steps.changelog.outputs.markdown}}
    prepare_develop_branch:
        runs-on: ubuntu-latest
        needs: [skip, create_release]
        steps:
            - uses: actions/checkout@master
            - name: 'Set git config'
              run: |
                  git config --local user.email "41898282+github-actions[bot]@users.noreply.github.com"
                  git config --local user.name "github-actions[bot]"
            - name: 'Create or Switch develop branch'
              run: |
                  git fetch
                  if [ `git branch -a --list origin/develop` ]; then
                    echo '> git switch develop'
                    git switch develop
                  else
                    echo '> git switch --create develop'
                    git switch --create develop
                    git push --set-upstream origin develop
                  fi
            - name: 'Create empty commit'
              run: |
                  git pull --no-edit
                  git commit --allow-empty -m "Create Pull Request"
                  git push origin develop
            - name: 'Create Pull Request'
              uses: repo-sync/pull-request@v2
              with:
                  source_branch: 'develop'
                  destination_branch: 'main'
                  pr_title: 'Release'
                  pr_body: "This is a pull request for the next release.\nIf you approve it, the release will be created.\nPlease merge your changes into this branch.\n\n**Do not attach anything other than a release tag to this request.\nUnexpected versions and content may be released.**"
                  pr_label: 'Release'
                  pr_draft: true
                  pr_allow_empty: true
                  github_token: ${{ secrets.GITHUB_TOKEN }}