DSCResources/MSFT_SPManagedAccount/MSFT_SPManagedAccount.psm1

function Get-TargetResource
{
    [CmdletBinding()]
    [OutputType([System.Collections.Hashtable])]
    param
    (
        [parameter(Mandatory = $false)] 
        [System.Management.Automation.PSCredential] 
        $Account,
        
        [parameter(Mandatory = $false)] 
        [ValidateSet("Present","Absent")] 
        [System.String] 
        $Ensure = "Present",

        [parameter(Mandatory = $false)] 
        [System.Management.Automation.PSCredential] 
        $InstallAccount,

        [parameter(Mandatory = $false)] 
        [System.UInt32] 
        $EmailNotification,

        [parameter(Mandatory = $false)] 
        [System.UInt32] 
        $PreExpireDays,

        [parameter(Mandatory = $false)] 
        [System.String] 
        $Schedule,

        [parameter(Mandatory = $true)]  
        [System.String] 
        $AccountName
    )

    Write-Verbose -Message "Getting managed account $AccountName"

    $result = Invoke-SPDSCCommand -Credential $InstallAccount `
                                  -Arguments $PSBoundParameters `
                                  -ScriptBlock {
        $params = $args[0]
        
        $ma = Get-SPManagedAccount -Identity $params.AccountName `
                                   -ErrorAction SilentlyContinue
        if ($null -eq $ma) 
        { 
            return @{
                AccountName    = $params.AccountName
                Account        = $params.Account
                Ensure         = "Absent"
                InstallAccount = $params.InstallAccount
            } 
        }
        $schedule = $null
        if ($null -ne $ma.ChangeSchedule) 
        { 
            $schedule = $ma.ChangeSchedule.ToString() 
        }
        return @{
            AccountName       = $ma.Username
            EmailNotification = $ma.DaysBeforeChangeToEmail
            PreExpireDays     = $ma.DaysBeforeExpiryToChange
            Schedule          = $schedule
            Account           = $params.Account
            Ensure            = "Present"
            InstallAccount    = $params.InstallAccount
        }
    }
    return $result
}

function Set-TargetResource
{
    [CmdletBinding()]
    param
    (
        [parameter(Mandatory = $false)] 
        [System.Management.Automation.PSCredential] 
        $Account,
        
        [parameter(Mandatory = $false)] 
        [ValidateSet("Present","Absent")] 
        [System.String] 
        $Ensure = "Present",

        [parameter(Mandatory = $false)] 
        [System.Management.Automation.PSCredential] 
        $InstallAccount,

        [parameter(Mandatory = $false)] 
        [System.UInt32] 
        $EmailNotification,

        [parameter(Mandatory = $false)] 
        [System.UInt32] 
        $PreExpireDays,

        [parameter(Mandatory = $false)] 
        [System.String] 
        $Schedule,

        [parameter(Mandatory = $true)]  
        [System.String] 
        $AccountName
    )

    Write-Verbose -Message "Setting managed account $AccountName"

    if ($Ensure -eq "Present" -and $null -eq $Account) 
    {
        throw ("You must specify the 'Account' property as a PSCredential to create a " + `
               "managed account")
        return
    }
    
    $currentValues = Get-TargetResource @PSBoundParameters
    if ($currentValues.Ensure -eq "Absent" -and $Ensure -eq "Present") 
    {
        Write-Verbose -Message ("Managed account does not exist but should, creating " + `
                                "the managed account")
        Invoke-SPDSCCommand -Credential $InstallAccount `
                            -Arguments $PSBoundParameters `
                            -ScriptBlock {
            $params = $args[0]
            New-SPManagedAccount -Credential $params.Account
        }
    }
    
    if ($Ensure -eq "Present") 
    {
        Write-Verbose -Message "Updating settings for managed account"
        Invoke-SPDSCCommand -Credential $InstallAccount `
                            -Arguments $PSBoundParameters `
                            -ScriptBlock {
            $params = $args[0]
            
            $updateParams = @{ 
                Identity = $params.Account.UserName 
            }
            if ($params.ContainsKey("EmailNotification")) 
            { 
                $updateParams.Add("EmailNotification", $params.EmailNotification) 
            }
            if ($params.ContainsKey("PreExpireDays")) 
            { 
                $updateParams.Add("PreExpireDays", $params.PreExpireDays) 
            }
            if ($params.ContainsKey("Schedule")) 
            { 
                $updateParams.Add("Schedule", $params.Schedule) 
            }
            Set-SPManagedAccount @updateParams
        }    
    } 
    else 
    {
        Write-Verbose -Message "Removing managed account"
        Invoke-SPDSCCommand -Credential $InstallAccount `
                            -Arguments $PSBoundParameters `
                            -ScriptBlock {
            $params = $args[0]
            Remove-SPManagedAccount -Identity $params.AccountName -Confirm:$false
        }
    }   
}

function Test-TargetResource
{
    [CmdletBinding()]
    [OutputType([System.Boolean])]
    param
    (
        [parameter(Mandatory = $false)] 
        [System.Management.Automation.PSCredential] 
        $Account,
        
        [parameter(Mandatory = $false)] 
        [ValidateSet("Present","Absent")] 
        [System.String] 
        $Ensure = "Present",

        [parameter(Mandatory = $false)] 
        [System.Management.Automation.PSCredential] 
        $InstallAccount,

        [parameter(Mandatory = $false)] 
        [System.UInt32] 
        $EmailNotification,

        [parameter(Mandatory = $false)] 
        [System.UInt32] 
        $PreExpireDays,

        [parameter(Mandatory = $false)] 
        [System.String] 
        $Schedule,

        [parameter(Mandatory = $true)]  
        [System.String] 
        $AccountName
    )

    Write-Verbose -Message "Testing managed account $AccountName"

    $PSBoundParameters.Ensure = $Ensure

    $CurrentValues = Get-TargetResource @PSBoundParameters

    return Test-SPDscParameterState -CurrentValues $CurrentValues `
                                    -DesiredValues $PSBoundParameters `
                                    -ValuesToCheck @("AccountName", 
                                                     "Schedule",
                                                     "PreExpireDays",
                                                     "EmailNotification", 
                                                     "Ensure") 
}

Export-ModuleMember -Function *-TargetResource