azure-templates-variables.yml

parameters:
  updateBuild: false

steps:

  - pwsh: |
      $featurePrefix = "refs/heads/$env:FEATURE_NAME_PREFIX"
      if ($env:BUILD_SOURCEBRANCH.StartsWith($featurePrefix)) {
        $feature = $env:BUILD_SOURCEBRANCH.Substring($featurePrefix.Length)
        Write-Host "Feature name: $feature"
        Write-Host "##vso[task.setvariable variable=FEATURE_NAME]$feature"
      } else {
        Write-Host "No feature name."
      }
    displayName: Determine the feature name, if any

  - pwsh: |
      $isPR = [regex]::Match("$env:BUILD_SOURCEBRANCH", 'refs\/pull\/(\d+)\/merge')
      if ($isPR) {
        if (-not $env:SYSTEM_PULLREQUEST_PULLREQUESTNUMBER) {
          $pr = $isPR.Groups[1].Value
          Write-Host "PR number: $pr"
          $env:SYSTEM_PULLREQUEST_PULLREQUESTNUMBER = $pr
          Write-Host "##vso[task.setvariable variable=SYSTEM_PULLREQUEST_PULLREQUESTNUMBER]$pr"
        }
        if (-not $env:SYSTEM_PULLREQUEST_SOURCECOMMITID) {
          $sha = [regex]::Match("$env:BUILD_SOURCEVERSIONMESSAGE", 'Merge (.+) into (.+)').Groups[1].Value
          Write-Host "PR SHA: $sha"
          $env:SYSTEM_PULLREQUEST_SOURCECOMMITID = $sha
          Write-Host "##vso[task.setvariable variable=SYSTEM_PULLREQUEST_SOURCECOMMITID]$sha"
        }
      } else {
        Write-Host "Not a PR build."
      }
    condition: or(eq(variables['Build.Reason'], 'ResourceTrigger'), eq(variables['Build.Reason'], 'Manual'))
    displayName: Update the PR variables for downstream builds

  - pwsh: |
      $pr = "pr." + $env:SYSTEM_PULLREQUEST_PULLREQUESTNUMBER
      Write-Host "Preview label: $pr"
      Write-Host "##vso[task.setvariable variable=PREVIEW_LABEL]$pr"
    displayName: Use a special preview label for PRs
    condition: eq(variables['Build.Reason'], 'PullRequest')

  - pwsh: |
      $nightly = "nightly"
      Write-Host "Preview label: $nightly"
      Write-Host "##vso[task.setvariable variable=PREVIEW_LABEL]$nightly"
    displayName: Use a special preview label for scheduled
    condition: eq(variables['Build.Reason'], 'Schedule')

  - pwsh: |
      Write-Host "Working with $env:RESOURCES_PIPELINE_SKIASHARP_RUNNAME"
      if ($env:RESOURCES_PIPELINE_SKIASHARP_RUNNAME) {
        $match = [regex]::Match("$env:RESOURCES_PIPELINE_SKIASHARP_RUNNAME", '.*\-(.+)\.(\d+)')
        $label = $match.Groups[1].Value
        Write-Host "Preview label: $label"
        Write-Host "##vso[task.setvariable variable=PREVIEW_LABEL]$label"
        $buildnumber = $match.Groups[2].Value
        Write-Host "Build number: $buildnumber"
        Write-Host "##vso[task.setvariable variable=BUILD_NUMBER]$buildnumber"
      } else {
        Write-Host "Not a secondary build."
      }
    condition: or(eq(variables['Build.Reason'], 'ResourceTrigger'), eq(variables['Build.Reason'], 'Manual'))
    displayName: Override the preview label and build number if this is a secondary build

  - pwsh: |
      $label = ""
      if ($env:RESOURCES_PIPELINE_SKIASHARP_RUNNAME) {
        $label = $env:RESOURCES_PIPELINE_SKIASHARP_RUNNAME
      } else {
        if ($env:BUILD_REASON -ne "PullRequest") {
          $label = "+" + $env:BUILD_SOURCEBRANCHNAME
        }
        $label = "$env:SKIASHARP_VERSION-$env:PREVIEW_LABEL.$env:BUILD_NUMBER$label"
      }
      Write-Host "Build label: $label"
      Write-Host "##vso[build.updatebuildnumber]$label"
    displayName: Update the build number with a more readable one
    condition: ${{ parameters.updateBuild }}