name: Generate Go package
on:
  workflow_dispatch:
    inputs:
      VERSION:
        description: 'Go version to build and upload'
        required: true
        default: '1.15.0'
      PUBLISH_RELEASES:
        description: 'Whether to publish releases'
        required: true
        default: 'false'

env:
  VERSION: ${{ github.event.inputs.VERSION }}
defaults:
  run:
    shell: pwsh

jobs:
  build_go:
    name: Build Go ${{ github.event.inputs.VERSION }} [${{ matrix.platform }}]
    runs-on: ubuntu-latest
    env: 
      ARTIFACT_NAME: go-${{ github.event.inputs.VERSION }}-${{ matrix.platform }}-x64
    strategy:
      fail-fast: false
      matrix:
        platform: [linux, darwin, win32]
    steps:
    - uses: actions/checkout@v2
      with:
        submodules: true

    - name: Build Go ${{ env.VERSION }}
      shell: pwsh
      run: |
        ./builders/build-go.ps1 -Version $env:VERSION `
                                -Platform ${{ matrix.platform }}

    - name: Publish artifact
      uses: actions/upload-artifact@v2
      with:
        name: ${{ env.ARTIFACT_NAME }}
        path: ${{ runner.temp }}/artifact

  test_go:
    name: Test Go ${{ github.event.inputs.VERSION }} [${{ matrix.platform }}]
    needs: build_go
    runs-on: ${{ matrix.os }}
    env: 
      ARTIFACT_NAME: go-${{ github.event.inputs.VERSION }}-${{ matrix.platform }}-x64
    strategy:
      fail-fast: false
      matrix:
        include:
        - os: ubuntu-latest
          platform: linux
        - os: macos-latest
          platform: darwin
        - os: windows-latest
          platform: win32
    steps:
    - uses: actions/checkout@v2
      with:
        submodules: true

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

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

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

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

    - 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"
        Write-Host "Random values:"
        for ($i = 0; $i -lt 200; $i++) { Get-Random }

    - name: Run tests
      run: |
        Install-Module Pester -Force -Scope CurrentUser
        Import-Module Pester
        Invoke-Pester -Script ./Go.Tests.ps1 -EnableExit
      working-directory: ./tests

  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:
    - uses: actions/download-artifact@v2

    - 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 ${{ env.VERSION }}

    - name: Upload release assets
      uses: actions/github-script@v2
      with:
        github-token: ${{ secrets.GITHUB_TOKEN }}
        script: |
          const fs = require('fs');
          for (let artifactDir of fs.readdirSync('.')) {
            let artifactName = fs.readdirSync(`${artifactDir}`)[0];
            console.log(`Upload ${artifactName} asset`);
            github.repos.uploadReleaseAsset({
              owner: context.repo.owner,
              repo: context.repo.repo,
              release_id: ${{ steps.create_release.outputs.id }},
              name: artifactName,
              data: fs.readFileSync(`./${artifactDir}/${artifactName}`) 
            });
          }

  trigger_pr:
    name: Trigger "Create Pull Request" workflow
    needs: publish_release
    runs-on: ubuntu-latest
    steps:
    - name: Trigger "Create Pull Request" workflow
      uses: actions/github-script@v2
      with:
        github-token: ${{ secrets.PERSONAL_TOKEN }}
        script: |
          github.actions.createWorkflowDispatch({
            owner: context.repo.owner,
            repo: context.repo.repo,
            workflow_id: 'create-pr.yml',
            ref: 'main'
          });