cut-release.yml

name: Cut Release
on:
  workflow_dispatch:
    inputs:
      release-type:
        description: Release type (major/minor/patch)
        required: true

permissions:
  pull-requests: write
  contents: write

jobs:
  cut-release:
    name: Creates release branch and PRs into dev/master
    runs-on: ubuntu-latest
    steps:
      - name: Exit if release type argument is invalid
        run: exit 1
        if: ${{ github.event.inputs.release-type != 'major' && github.event.inputs.release-type != 'minor' && github.event.inputs.release-type != 'patch' }}

      - name: Checkout dev for ${{ github.event.inputs.release-type }} release
        uses: actions/checkout@v2
        if: ${{ github.event.inputs.release-type == 'major' || github.event.inputs.release-type == 'minor' }}
        with:
          ref: dev

      - name: Checkout master for ${{ github.event.inputs.release-type }} release
        uses: actions/checkout@v2
        if: ${{ github.event.inputs.release-type == 'patch' }}
        with:
          ref: master

      - uses: actions/checkout@v2
      - name: Create release branch and generate PR body
        id: create-release
        env:
          RELEASE_TYPE: ${{ github.event.inputs.release-type }}
        run: |
          git pull --force

          currentVersion=$( jq -r '.version' < package.json )
          echo "Current version is $currentVersion"

          npm version $RELEASE_TYPE --git-tag-version false
          newVersion=$(jq -r .version package.json)
          git reset --hard

          branchName="release/${newVersion}"

          echo "New version is $newVersion"
          echo "New branch name is $branchName"

          git config user.name github-actions
          git config user.email github-actions@github.com

          git checkout -b "$branchName"

          npm version $RELEASE_TYPE --git-tag-version false

          git commit -a -m "Bump version to ${newVersion}"
          git push --set-upstream origin "$branchName"

          # Use --depth to get commits to add to rev-list
          git fetch origin master --depth 100
          git fetch origin dev --depth 100

          masterPrBody=$(git rev-list --oneline $branchName ^origin/master)
          devPrBody=$(git rev-list --oneline $branchName ^origin/dev)

          echo 'masterPrBody<<END_OF_OUTPUT' >> $GITHUB_ENV
          echo "$masterPrBody" >> $GITHUB_ENV
          echo 'END_OF_OUTPUT' >> $GITHUB_ENV

          echo 'devPrBody<<END_OF_OUTPUT' >> $GITHUB_ENV
          echo "$devPrBody" >> $GITHUB_ENV
          echo 'END_OF_OUTPUT' >> $GITHUB_ENV

          echo "NEW_VERSION=${newVersion}" >> $GITHUB_ENV
          echo "::set-output name=branchName::$branchName"