name: Generate Go.js
on:
# TODO: currently workflow dispatch endpoint does not work. I will investigate
  workflow_dispatch:
    inputs:
      VERSION:
        description: 'Go version to build and upload'
        required: true
        default: '14.2.0'
      PUBLISH_RELEASES:
        description: 'Whether to publish releases'
        required: true
        default: 'false'

env:
  VERSION: ${{ github.event.inputs.VERSION }}
  ARCHITECTURE: x64

jobs:
  build_go:
    name: Build Go ${{ github.event.inputs.VERSION }} ${{ matrix.platform }}
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        platform: [linux, darwin, win32]
    steps:
    - uses: actions/checkout@v2
      with:
        submodules: true

    - name: Create artifact directories
      run: |
        binariesDirectory=$RUNNER_WORKSPACE/binaries
        echo ::set-env name=BINARIES_DIRECTORY::$binariesDirectory
        mkdir $binariesDirectory
        artifactDirectory=$RUNNER_WORKSPACE/artifact
        echo ::set-env name=ARTIFACT_DIRECTORY::$artifactDirectory
        mkdir $artifactDirectory
    - name: Build Go ${{ env.VERSION }}
      run: |
        ./builders/build-go.ps1 -Version $env:VERSION `
                                  -Platform ${{ matrix.platform }} `
                                  -Architecture $env:ARCHITECTURE
      shell: pwsh

    - name: Publish artifact
      uses: actions/upload-artifact@v2
      with:
        name: go-${{ env.VERSION }}-${{ matrix.platform }}
        path: /home/runner/work/go-versions/artifact

  test_go:
    name: Test Go ${{ github.event.inputs.VERSION }} ${{ matrix.platform }}
    needs: build_go
    runs-on: ${{ matrix.os }}-latest
    strategy:
      fail-fast: false
      matrix:
        include:
        - os: ubuntu
          platform: linux
        - os: macos
          platform: darwin
        - os: windows
          platform: win32
    steps:
    - uses: actions/checkout@v2
      with:
        submodules: true

    - name: Set AGENT_TOOLSDIRECTORY variable
      if: matrix.platform == 'win32'
      run: |
        # GitHub Windows images don't have `AGENT_TOOLSDIRECTORY` variable
        echo ::set-env name=AGENT_TOOLSDIRECTORY::$RUNNER_TOOL_CACHE
      shell: bash

    - name: Fully cleanup the toolcache directory before testing
      run: |
        ./helpers/clean-toolcache.ps1 -ToolName "go"
      shell: pwsh

    - name: Download artifact
      uses: actions/download-artifact@v2
      with:
        path: ${{ runner.temp }}

    - name: Extract files
      run: |
        if ('${{ matrix.platform }}' -eq 'win32') {
          $artifactName = "go-${{ env.VERSION }}-${{ matrix.platform }}-${{ env.ARCHITECTURE }}.7z"
          7z.exe x "$artifactName" -y | Out-Null 
        } else {
          $artifactName = "go-${{ env.VERSION }}-${{ matrix.platform }}-${{ env.ARCHITECTURE }}.tar.gz"
          tar -xzf $artifactName
        }
      working-directory: ${{ runner.temp }}/go-${{ env.VERSION }}-${{ matrix.platform }}
      shell: pwsh

    - name: Apply build artifact to the local machine
      run: |
        if ('${{ matrix.platform }}' -eq 'win32') { powershell ./setup.ps1 } else { sh ./setup.sh }
      working-directory: ${{ runner.temp }}/go-${{ env.VERSION }}-${{ matrix.platform }}
      shell: pwsh

    - name: Setup Go ${{ env.VERSION }}
      uses: actions/setup-go@v2.1.1
      with:
        go-version: ${{ env.VERSION }}

    - name: Wait for the logs
      run: |
        Write-Host "Fake step that do nothing"
        Write-Host "We need it because log of previous step 'Setup Go' is not available here yet."
        Write-Host "In testing step (Go.Tests.ps1) we analyze build log of 'Setup Go' task"
        Write-Host "to determine if Go.js version was consumed from cache and was downloaded"
      shell: pwsh

    - name: Run tests
      run: |
        Install-Module Pester -Force -Scope CurrentUser -RequiredVersion 4.10.1
        Import-Module Pester
        $pesterParams = @{
          Path="./Go.Tests.ps1";
          Parameters=@{
            Version="$env:VERSION";
          }
        }
        Invoke-Pester -Script $pesterParams -EnableExit -OutputFile "test_results.xml" -OutputFormat NUnitXml
      working-directory: ./tests
      shell: pwsh

  publish_release:
    name: Publish release
    if: github.event.inputs.PUBLISH_RELEASES == 'true'
    needs: test_go
    runs-on: ubuntu-latest
    outputs:
      upload_url: ${{ steps.create_release.outputs.upload_url }}
    steps:
    - name: Publish Release ${{ env.VERSION }}
      id: create_release
      uses: actions/create-release@v1
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      with:
        tag_name: ${{ env.VERSION }}-${{ github.run_id }}
        release_name: ${{ env.VERSION }}
        body: |
          Upload Go.js ${{ env.VERSION }}
  upload_assets:
    name: Upload assets for ${{ matrix.platform }}
    needs: publish_release
    runs-on: ubuntu-latest
    env:
      UPLOAD_URL: ${{ needs.publish_release.outputs.upload_url }}
    strategy:
      matrix:
        extension: ['tar.gz']
        platform: [linux, darwin] 
        include:
        - platform: win32
          extension: 7z
    steps:
    - uses: actions/download-artifact@v2
      with:
        name: go-${{ env.VERSION }}-${{ matrix.platform }}

    - name: Upload Release Asset
      uses: actions/upload-release-asset@v1
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      with:
        upload_url: ${{ env.UPLOAD_URL }}
        asset_path: ./go-${{ env.VERSION }}-${{ matrix.platform }}-${{ env.ARCHITECTURE }}.${{ matrix.extension }}
        asset_name: go-${{ env.VERSION }}-${{ matrix.platform }}-${{ env.ARCHITECTURE }}.${{ matrix.extension }}
        asset_content_type: application/zip

  create_pr:
    name: Create Pull Request
    needs: upload_assets
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2
      with:
        submodules: true

    - name: Trigger "Create Pull Request" workflow
      uses: actions/github-script@v2
      with:
        github-token: ${{ secrets.PERSONAL_TOKEN }}
        script: |
          # TODO: currently 'actions.createWorkflowDispatch' function does not work. I will investigate  
          github.repos.createDispatchEvent({
            owner: context.repo.owner,
            repo: context.repo.repo,
            event_type: 'create-pr'
          });