github PR upsert

upsert-pr.ps1

$Token = 'username:token89898989';
$Base64Token = [System.Convert]::ToBase64String([char[]]$Token);

$Headers = @{ AUTHORIZATION= "Basic $Base64Token" };

$Body = '{
  "title": "Title",
  "body": "Please merge this PR",
  "head": "user:headBranch",
  "base": "baseBranch"
}';

[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12;
$rest = Invoke-RestMethod -Headers $Headers -Uri https://api.github.com/repos/{user}/{repo}/pulls?head=user:headbranch -Method Get

if($rest.state){
#update
$uri = "https://api.github.com/repos/{user}/{repo}/pulls/" + $rest.number;
Invoke-RestMethod -Headers $Headers -Uri $uri -Method Patch -Body '{"title": "new Title"}';
}
else{
#create
Invoke-RestMethod -Headers $Headers -Uri https://api.github.com/repos/{user}/{repo}/pulls -Method Post -Body $Body
}