Public/Build/New-GitLabBuild.ps1

Function New-GitLabBuild {
[cmdletbinding()]
param(
    [ValidateNotNullOrEmpty()]
    [Parameter(ParameterSetName="Default",Mandatory=$true)]
    [Parameter(ParameterSetName="Variable",Mandatory=$true)]
    [int]$ProjectId,
    [ValidateNotNullOrEmpty()]
    [Parameter(ParameterSetName="Default",Mandatory=$true)]
    [Parameter(ParameterSetName="Variable",Mandatory=$true)]
    [string]$Reference,
    [ValidateNotNullOrEmpty()]
    [Parameter(ParameterSetName="Default",Mandatory=$true)]
    [Parameter(ParameterSetName="Variable",Mandatory=$true)]
    [string]$token,
    [Parameter(ParameterSetName="Variable",Mandatory=$true)]
    [string]$Variable,
    [Parameter(ParameterSetName="Variable",Mandatory=$true)]
    [string]$Value
)
    $LF = "`r`n"
    $uri = "http://gitlab.columbia.csc/api/v3/projects/$ProjectId/trigger/builds"
    $boundary = [System.Guid]::NewGuid().ToString()

    $bodyLines =
        "--$boundary$LF" +
        "Content-Disposition: form-data; name=`"token`"$LF" +
        "Content-Type: 'multipart/form-data'$LF$LF" +
        "$token$LF" +
        "--$boundary$LF" +
        "Content-Disposition: form-data; name=`"ref`"$LF" +
        "Content-Type: 'multipart/form-data'$LF$LF" +
        "$Reference$LF"

    if ($Variable) {
        $Variable = "variables[$Variable]"
        $bodyLines +=
            ("--$boundary$LF" +
            "Content-Disposition: form-data; name=`"$Variable`"$LF" +
            "Content-Type: multipart/form-data$LF$LF" +
            "$Value$LF")
    }
    $bodyLines += "--$boundary--$LF"
    
    try {
        $result = Invoke-RestMethod -Uri $uri -Method Post -ContentType "multipart/form-data; boundary=`"$boundary`"" -Body $bodyLines
        Write-Debug $result
        Write-Output "Build trigger sent successfully"
    }
    catch {
        Write-Output ($x.ErrorDetails.Message | convertfrom-json).message
    }
}