Extract GitLab Variables from Projects and Groups to declare Environment Variables in Bash and PowerShell

Get-GitLabVariables

[cmdletbinding()]
param (
    [String]$GitLabUrl,
    [String]$GitLabAccessToken,
    [String]$GroupId,
    [String]$ProjectId,
    [switch]$Pwsh

)

$env:GITLAB_URL = $GitLabUrl
$env:GITLAB_ACCESS_TOKEN = $GitLabAccessToken

$varArr = [System.Collections.ArrayList]@()

Write-Verbose "Fetching Group Variables for Group: $($GroupId)"
Get-GitlabGroupVariable -GroupId $GroupId | ForEach-Object {
    $tmpObj = $_ | Select-Object @{Name = 'VariableName'; Expression = { $_.Key } }, @{Name = 'VariableValue'; Expression = { $_.Value } }
    $null = $varArr.Add($tmpObj)
}

Write-Verbose "Fetching Project Variables for Project: $($ProjectId)"
Get-GitlabProjectVariable -ProjectId $ProjectId | ForEach-Object {
    $tmpObj = $_ | Select-Object @{Name = 'VariableName'; Expression = { $_.Key } }, @{Name = 'VariableValue'; Expression = { $_.Value } }
    $null = $varArr.Add($tmpObj)
}

$sb = [System.Text.StringBuilder]::new()
switch ($Pwsh) {
    $true { 
        Write-Verbose "Variable will be declared for PowerShell Environment"
        $varArr | ForEach-Object {
            $null = $sb.AppendLine("`$ENV:$($_.VariableName) = `"$($_.VariableValue)`"")
        }
    }
    $false {
        Write-Verbose "Variable will be declared for Bash Environment"
        $varArr | ForEach-Object {
            $null = $sb.AppendLine("export $($_.VariableName)=`"$($_.VariableValue)`"")
        }
    }
}

return $sb.ToString()