functions/Get-TssSecret.ps1

function Get-TssSecret {
    <#
    .SYNOPSIS
    Get a secret from Secret Server
 
    .DESCRIPTION
    Get a secret(s) from Secret Server
 
    .EXAMPLE
    PS C:\> $session = New-TssSession -SecretServer https://alpha -Credential $ssCred
    PS C:\> Get-TssSecret -TssSession $session -Id 93
 
    Returns secret associated with the Secret ID, 93
 
    .EXAMPLE
    PS C:\> $session = New-TssSession -SecretServer https://alpha -Credential $ssCred
    PS C:\> Get-TssSecret -TssSession $session -Id 1723 -Comment "Accessing application Y"
 
    Returns secret associated with the Secret ID, 1723, providing required comment
 
    .EXAMPLE
    PS C:\> $session = New-TssSession -SecretServer https://alpha -Credential $ssCred
    PS C:\> $secret = Get-TssSecret -TssSession $session -Id 46
    PS C:\> $cred = $secret.GetCredential()
 
    Gets Secret ID 46 and then output a PSCredential to utilize in script workflow
 
    .NOTES
    Requires TssSession object returned by New-TssSession
    #>

    [cmdletbinding()]
    [OutputType('TssSecret')]
    param(
        # TssSession object created by New-TssSession for auth
        [Parameter(Mandatory,
            ValueFromPipeline,
            Position = 0)]
        [TssSession]$TssSession,

        # Secret ID to retrieve
        [Parameter(Mandatory,ValueFromPipelineByPropertyName)]
        [Alias("SecretId")]
        [int[]]
        $Id,

        # Comment to provide for restricted secret (Require Comment is enabled)
        [string]
        $Comment,

        # Output the raw response from the REST API endpoint
        [switch]
        $Raw
    )
    begin {
        $tssParams = . $GetParams $PSBoundParameters 'Get-TssSecret'
        $invokeParams = @{ }
    }

    process {
        if ($tssParams.Contains('TssSession') -and $TssSession.IsValidSession()) {
            foreach ($secret in $Id) {
                $restResponse = $null
                $uri = $TssSession.SecretServer + ($TssSession.ApiVersion, "secrets", $secret.ToString() -join '/')
                if ($Comment) {
                    $uri = $uri, "restricted" -join "/"
                    $body = "{'comment':'$Comment', 'includeInactive':'$true'}"
                    $invokeParams.Uri = $Uri
                    $invokeParams.Method = 'POST'
                    $invokeParams.Body = $body
                } else {
                    $uri = $uri, "includeInactive=true" -join "?"
                    $invokeParams.Uri = $uri
                    $invokeParams.Method = 'GET'
                }

                $invokeParams.PersonalAccessToken = $TssSession.AccessToken
                try {
                    $restResponse = Invoke-TssRestApi @invokeParams
                } catch {
                    Write-Warning "Issue getting secret [$secret]"
                    $err = $_.ErrorDetails.Message
                    Write-Error $err
                }

                if ($tssParams['Raw']) {
                    return $restResponse
                }
                if ($restResponse) {
                    . $GetTssSecretObject $restResponse
                }
            }
        } else {
            Write-Warning "No valid session found"
        }
    }
}