# Expects azuresdk-github-pat is set to the PAT for azure-sdk
# Expects the buildtools to be cloned

parameters:
  BaseBranchName: $(Build.SourceBranch)
  PRBranchName: not-specified
  PROwner: azure-sdk
  CommitMsg: not-specified
  RepoOwner: Azure
  RepoName: $(Build.Repository.Name)
  PushArgs:
  WorkingDirectory: $(System.DefaultWorkingDirectory)
  PRTitle: not-specified
  PRBody: ''
  ScriptDirectory: eng/common/scripts
  GHReviewersVariable: '' 
  GHTeamReviewersVariable: ''
  GHAssignessVariable: ''
  # Multiple labels seperated by comma, e.g. "bug, APIView"
  PRLabels: ''
  SkipCheckingForChanges: false
  CloseAfterOpenForTesting: false

steps:

- pwsh: |
    echo "git add -A"
    git add -A

    echo "git diff --name-status --cached --exit-code"
    git diff --name-status --cached --exit-code

    if ($LastExitCode -ne 0) {
      echo "##vso[task.setvariable variable=HasChanges]$true"
      echo "Changes detected so setting HasChanges=true"
    }
    else {
      echo "##vso[task.setvariable variable=HasChanges]$false"
      echo "No changes so skipping code push"
    }
  displayName: Check for changes
  condition: and(succeeded(), eq(${{ parameters.SkipCheckingForChanges }}, false))
  workingDirectory: ${{ parameters.WorkingDirectory }}
  ignoreLASTEXITCODE: true

- pwsh: |
    # Remove the repo owner from the front of the repo name if it exists there
    $repoName = "${{ parameters.RepoName }}" -replace "^${{ parameters.RepoOwner }}/", ""
    echo "##vso[task.setvariable variable=RepoNameWithoutOwner]$repoName"
    echo "RepoName = $repoName"
  displayName: Remove Repo Owner from Repo Name
  condition: succeeded()
  workingDirectory: ${{ parameters.WorkingDirectory }}

- task: PowerShell@2
  displayName: Push changes
  condition: and(succeeded(), eq(variables['HasChanges'], 'true'))
  inputs:
    pwsh: true
    workingDirectory: ${{ parameters.WorkingDirectory }}
    filePath: ${{ parameters.ScriptDirectory }}/git-branch-push.ps1
    arguments: >
      -PRBranchName "${{ parameters.PRBranchName }}"
      -CommitMsg "${{ parameters.CommitMsg }}"
      -GitUrl "https://$(azuresdk-github-pat)@github.com/${{ parameters.PROwner }}/$(RepoNameWithoutOwner).git"
      -PushArgs "${{ parameters.PushArgs }}"
      -SkipCommit $${{ parameters.SkipCheckingForChanges }}

- task: PowerShell@2
  displayName: Create pull request
  condition: and(succeeded(), eq(variables['HasChanges'], 'true'))
  inputs:
    pwsh: true
    workingDirectory: ${{ parameters.WorkingDirectory }}
    filePath: ${{ parameters.ScriptDirectory }}/Submit-PullRequest.ps1
    arguments: >
      -RepoOwner "${{ parameters.RepoOwner }}"
      -RepoName "$(RepoNameWithoutOwner)"
      -BaseBranch "${{ parameters.BaseBranchName }}"
      -PROwner "${{ parameters.PROwner }}"
      -PRBranch "${{ parameters.PRBranchName }}"
      -AuthToken "$(azuresdk-github-pat)"
      -PRTitle "${{ parameters.PRTitle }}"
      -PRBody "${{ coalesce(parameters.PRBody, parameters.CommitMsg, parameters.PRTitle) }}"
      -PRLabels "${{ parameters.PRLabels }}"
      -UserReviewers "${{ parameters.GHReviewersVariable }}"
      -TeamReviewers "${{ parameters.GHTeamReviewersVariable }}"
      -Assignees "${{ parameters.GHAssignessVariable }}"
      -CloseAfterOpenForTesting $${{ coalesce(parameters.CloseAfterOpenForTesting, 'false') }}
