release.yml

name: Release

on:
  pull_request:
    types: [ labeled ]
    branches:
      - master

jobs:
  prepare-release:
    name: Prepare release
    runs-on: ubuntu-latest

    steps:
      - name: Set major release
        if: ${{ github.event.label.name == 'release-major' }}
        run: echo "RELEASE=major" >> $GITHUB_ENV
      - name: Set minor release
        if: ${{ github.event.label.name == 'release-minor' }}
        run: echo "RELEASE=minor" >> $GITHUB_ENV
      - name: Set patch release
        if: ${{ github.event.label.name == 'release-patch' }}
        run: echo "RELEASE=patch" >> $GITHUB_ENV
      - name: Check release env
        run: |
          if [[ -z "${{ env.RELEASE }}" ]];
          then
            echo "You need to set a release label on PRs to the main branch"
            exit 1
          else
            exit 0
          fi
      - name: Install semver-tool
        run: |
          export DIR=$(mtemp)
          cd $DIR
          curl https://github.com/fsaintjacques/semver-tool/archive/3.2.0.tar.gz -L -o semver.tar.gz
          tar -xvf semver.tar.gz
          sudo cp semver-tool-3.2.0/src/semver /usr/local/bin
      - name: Bump version
        run: |
          export CURRENT=$(nuget list PusherServer | grep PusherServer | cut -d' ' -f 2)
          export NEW_VERSION=$(semver bump ${{ env.RELEASE }} $CURRENT)
          echo "VERSION=$NEW_VERSION" >> $GITHUB_ENV
      - name: Checkout code
        uses: actions/checkout@v2
      - name: Setup git
        run: |
          git config user.email "pusher-ci@pusher.com"
          git config user.name "Pusher CI"
          git fetch
          git checkout ${{ github.event.pull_request.head.ref }}
      - name: Prepare package
        run: |
          sed -i 's/<Version>[^<]*<\/Version>/<Version>${{ env.VERSION }}<\/Version>/' Root.Build.props
          sed -i 's/<AssemblyVersion>[^<]*<\/AssemblyVersion>/<AssemblyVersion>${{ env.VERSION }}.0<\/AssemblyVersion>/' Root.Build.props
          sed -i 's/<FileVersion>[^<]*<\/FileVersion>/<FileVersion>${{ env.VERSION }}.0<\/FileVersion>/' Root.Build.props
      - name: Prepare CHANGELOG
        env: 
          PULL_REQUEST_BODY: ${{ github.event.pull_request.body }}
        run: |
          echo "$PULL_REQUEST_BODY" | csplit -s - "/##/"
          echo "# Changelog

          ## ${{ env.VERSION }}" >> CHANGELOG.tmp
          grep "^*" xx01 >> CHANGELOG.tmp
          grep -v "^# " CHANGELOG.md >> CHANGELOG.tmp
          cp CHANGELOG.tmp CHANGELOG.md
          git add Root.Build.props CHANGELOG.md
          git commit -m "Bump to version ${{ env.VERSION }}"
      - name: Push
        run: git push