release-cut.yaml

## This Action creates a `release-*` branch off of the `main` branch
##  - The new `release-*` branch will match the next semantic version (based on git tags)

name: "Release-Cut"

# Workflow runs when manually triggered using the UI or API
on: workflow_dispatch
 
# This Workflow should cut a `release-*` branch from `develop` and create a PR into `main`
jobs:
  cut-release:
    runs-on: ubuntu-latest

    # TODO: Should we create step that sets "variables" for action (main branch, release commit user)
    steps: 
    - uses: actions/checkout@v2.3.4
      with:
        ## This is a Personal Access Token from Admin User that allows us to bypass branch protections on develop
        token: ${{ secrets.PAT }}
        fetch-depth: 0

    # NOTE: Update CHANGELOG_PREFIX_LIST to configure the lines you wan to include in the changelog (body of release PR)
    - name: "Get Release Info"
      id: version
      run: |
        git fetch --all --tags;
        git checkout main;
        git checkout develop;
        cd scripts/release;
        unzip git-mkver-linux.zip;
        cd ../..;
        echo "##[set-output name=major;]$(./scripts/release/git-mkver-linux next --format '{Major}')";
        echo "##[set-output name=minor;]$(./scripts/release/git-mkver-linux next --format '{Minor}')";
        echo "##[set-output name=patch;]$(./scripts/release/git-mkver-linux next --format '{Patch}')";
        CHANGELOG=$(git log --format=%s main..HEAD | grep -i -E "^($CHANGELOG_PREFIX_LIST)" | sed "s/^/ - /") 
        CHANGELOG="${CHANGELOG//'%'/'%25'}"
        CHANGELOG="${CHANGELOG//$'\n'/'%0A'}"
        CHANGELOG="${CHANGELOG//$'\r'/'%0D'}"
        echo "##[set-output name=changelog;]$(echo $CHANGELOG)";
      env:
        CHANGELOG_PREFIX_LIST: "feature|feat|fix|bugfix|bug"

    # Attempts to cut a release branch
    #   fails if there are no `feat|feature` commits since last release
    - name: "Cut Release Branch"
      run: |
        ./scripts/release/release-cut-check.sh
        git config --global user.name 'Release Cut'
        git config --global user.email 'release@cut.com'
        git checkout -b $RELEASE_BRANCH;
        ./scripts/release/update-versions.sh $RELEASE_VERSION;
        git commit -a -m "update version for $RELEASE_BRANCH";
        git push --set-upstream origin $RELEASE_BRANCH;
      env:
        RELEASE_BRANCH: release-${{ steps.version.outputs.major }}.${{ steps.version.outputs.minor }}
        RELEASE_VERSION: ${{ steps.version.outputs.major }}.${{ steps.version.outputs.minor }}.${{ steps.version.outputs.patch }}

    # Note: see https://github.com/repo-sync/pull-request#advanced-options for all options
    - name: Create Pull Request
      uses: repo-sync/pull-request@v2.6
      with:
        github_token: ${{ secrets.PAT }}
        source_branch: release-${{ steps.version.outputs.major }}.${{ steps.version.outputs.minor }}
        destination_branch: "main" 
        pr_title: release-${{ steps.version.outputs.major }}.${{ steps.version.outputs.minor }}
        pr_body: ${{ steps.version.outputs.changelog }}
        pr_label: "- release -"

    # Note: This increments minor version only, for now major releases will be done manually
    # until we figure out a better method
    - name: "Generate Next Version Number"
      id: next_version
      run: |
        echo "##[set-output name=minor;]$(($MINOR_VERSION+1))"
      env:
        MINOR_VERSION: ${{ steps.version.outputs.minor }}

    - name: "Update File Versions" # in repo
      run: |
        git config --global user.name 'Release Cut'
        git config --global user.email 'release@cut.com'
        git checkout develop;
        ./scripts/release/update-versions.sh $NEXT_VERSION;
        git commit -a -m "update version after $RELEASE_BRANCH";
        git push;
      env:
        NEXT_VERSION: ${{ steps.version.outputs.major }}.${{ steps.next_version.outputs.minor }}-SNAPSHOT
        RELEASE_BRANCH: release-${{ steps.version.outputs.major }}.${{ steps.version.outputs.minor }}