update_unity_package.yml

name: Build Unity Package

# Controls when the action will run. Triggers the workflow on pushing changes to develop that include 
# updating the 'VersionConstants.cs' since this asset will change only on a new version
on:
  push:
    branches: [ develop ]
    paths:
    - 'Unity/Assets/JCMG/PackageTools/Scripts/Editor/VersionConstants.cs'

# A workflow run is made up of one or more jobs that can run sequentially or in parallel
jobs:
  # This workflow contains a single job called "build"
  build:
    runs-on: ubuntu-latest
    steps:
      # Check out the 'develop' and 'release/stable' branch
      - uses: actions/checkout@v2
        with:
          ref: 'develop'
          path: './unity-package-tools'
      - uses: actions/checkout@v2
        with:
          ref: 'release/stable'
          path: './unity-package-tools_release'

      # Retrieve cache for Unity project
      - name: Retrieve Unity Library Cache
        uses: actions/cache@v1.1.0
        with:
          path: './unity-package-tools/Unity/Library'
          key: Library-PackageTools-Windows
          restore-keys: |
            Library-PackageTools

      # Execute Unity Unit Tests and Upload results
      - name: Run Unity Unit Tests
        uses: webbertakken/unity-test-runner@v1.4
        env:
          UNITY_EMAIL: ${{ secrets.UNITY_EMAIL }}
          UNITY_PASSWORD: ${{ secrets.UNITY_PASSWORD }}
          UNITY_SERIAL: ${{ secrets.UNITY_SERIAL }}
        with:
          projectPath: './unity-package-tools/Unity'
          unityVersion: 2019.4.11f1
      - name: Upload Unit Test Results
        uses: actions/upload-artifact@v1
        with:
          name: Test results
          path: artifacts

      # Build Unity Package on Develop branch
      - name: Execute Unity Package Build
        uses: webbertakken/unity-builder@v2.0-alpha-1
        env:
          UNITY_EMAIL: ${{ secrets.UNITY_EMAIL }}
          UNITY_PASSWORD: ${{ secrets.UNITY_PASSWORD }}
          UNITY_SERIAL: ${{ secrets.UNITY_SERIAL }}
        with:
          projectPath: './unity-package-tools/Unity'
          unityVersion: 2019.4.11f1
          buildMethod: 'JCMG.PackageTools.Editor.PackageToolsCI.Generate'
          allowDirtyBuild: true

      # Check in Unity Package on Release branch
      - name: Add & Commit Release Changes
        uses: EndBug/add-and-commit@v5.1.0
        env:
          # This is necessary in order to push a commit to the repo
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} # Leave this line unchanged
        with:
          author_name: Github Action Bot
          cwd: './unity-package-tools_release'
          branch: 'release/stable'
          message: 'Auto-updated package contents'