prepare-release.yml

# Copyright (c) .NET Foundation and Contributors
# See LICENSE file in the project root for full license information.

steps:

  - task: PowerShell@2
    condition: eq( variables['StartReleaseCandidate'], true )
    displayName: NBGV prepare release
    inputs:
      targetType: 'inline'
      script: |
        # compute authorization header in format "AUTHORIZATION: basic 'encoded token'"
        # 'encoded token' is the Base64 of the string "nfbot:personal-token"
        $auth = "basic $([System.Convert]::ToBase64String([System.Text.Encoding]::UTF8.GetBytes("nfbot:$(GitHubToken)")))"

        cd "$env:Agent_TempDirectory" > $null

        Write-Host "Cloning from: $env:BUILD_REPOSITORY_URI"

        git clone $env:BUILD_REPOSITORY_URI repo
        cd repo > $null
        git config --global gc.auto 0
        git config --global user.name nfbot
        git config --global user.email nanoframework@outlook.com
        git config --global core.autocrlf true
        
        Write-Host "Checkout develop branch..."
        git checkout --quiet develop  > $null

        # prepare release and capture output
        Write-Host "Prepare release with NBGV..."
        $release = nbgv prepare-release

        Write-Host "Prepare commit..."
        # get commit message for the merge
        $commitMessage = git log -1 --pretty=%B

        # amend commit message to skip build
        git commit --amend -m "$commitMessage" -m "***NO_CI***" > $null

        Write-Host "Pushing changes to GitHub..."
        # push all changes to github
        git -c http.extraheader="AUTHORIZATION: $auth" push --quiet --all origin

        # get release branch name
        $branch = $release.Split(' ')[0]

        Write-Host "Prepare PR..."
        # start PR for release
        $prRequestBody = @{title="$branch";body="[release candidate]";head="$branch";base="main"} | ConvertTo-Json
        $githubApiEndpoint = "https://api.github.com/repos/$env:BUILD_REPOSITORY_NAME/pulls"
        [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12

        $headers = @{}
        $headers.Add("Authorization","$auth")
        $headers.Add("Accept","application/vnd.github.symmetra-preview+json")

        try 
        {
            $result = Invoke-RestMethod -Method Post -UserAgent [Microsoft.PowerShell.Commands.PSUserAgent]::InternetExplorer -Uri  $githubApiEndpoint -Header $headers -ContentType "application/json" -Body $prRequestBody
            'Started PR for new release...' | Write-Host -NoNewline
            'OK' | Write-Host -ForegroundColor Green
        }
        catch 
        {
            $result = $_.Exception.Response.GetResponseStream()
            $reader = New-Object System.IO.StreamReader($result)
            $reader.BaseStream.Position = 0
            $reader.DiscardBufferedData()
            $responseBody = $reader.ReadToEnd();

            "Error starting PR: $responseBody" | Write-Host -ForegroundColor Red
        }
      workingDirectory: $(Agent.TempDirectory)
      ignoreLASTEXITCODE: true