DSCResources/MSFT_EXOPolicyTipConfig/MSFT_EXOPolicyTipConfig.psm1

function Get-TargetResource
{
    [CmdletBinding()]
    [OutputType([System.Collections.Hashtable])]
    param
    (
        [Parameter(Mandatory = $true)]
        [System.String]
        $Name,

        [Parameter()]
        [System.String]
        $Value,

        [Parameter()]
        [ValidateSet('Present', 'Absent')]
        [System.String]
        $Ensure = 'Present',

        [Parameter(Mandatory = $true)]
        [System.Management.Automation.PSCredential]
        $GlobalAdminAccount
    )

    Write-Verbose -Message "Getting Policy Tip configuration for $Name"
    #region Telemetry
    $data = [System.Collections.Generic.Dictionary[[String], [String]]]::new()
    $data.Add("Resource", $MyInvocation.MyCommand.ModuleName)
    $data.Add("Method", $MyInvocation.MyCommand)
    Add-M365DSCTelemetryEvent -Data $data
    #endregion

    Test-MSCloudLogin -CloudCredential $GlobalAdminAccount `
        -Platform ExchangeOnline

    $command = Get-Command Get-PolicyTipConfig -ErrorAction SilentlyContinue
    if ($null -eq $command)
    {
        New-M365DSCLogEntry -Error $_ -Message "Get-PolicyTipConfig is not available in the tenant" `
            -Source $MyInvocation.MyCommand.ModuleName
        throw "EXOPolicyTipConfig is not supported in the current tenant."
    }

    $AllPolicyTips = Get-PolicyTipConfig

    $PolicyTipConfig = $AllPolicyTips | Where-Object -FilterScript { $_.Name -eq $Name }

    if ($null -eq $PolicyTipConfig)
    {
        Write-Verbose -Message "Policy Tip Config $($Name) does not exist."

        $nullReturn = @{
            Name               = $Name
            Value              = $Value
            Ensure             = 'Absent'
            GlobalAdminAccount = $GlobalAdminAccount
        }

        return $nullReturn
    }
    else
    {
        $result = @{
            Name               = $PolicyTipConfig.Name
            Value              = $PolicyTipConfig.Value
            Ensure             = 'Present'
            GlobalAdminAccount = $GlobalAdminAccount
        }

        Write-Verbose -Message "Found Policy Tip Config $($Name)"
        return $result
    }
}

function Set-TargetResource
{
    [CmdletBinding()]
    param
    (
        [Parameter(Mandatory = $true)]
        [System.String]
        $Name,

        [Parameter()]
        [System.String]
        $Value,

        [Parameter()]
        [ValidateSet('Present', 'Absent')]
        [System.String]
        $Ensure = 'Present',

        [Parameter(Mandatory = $true)]
        [System.Management.Automation.PSCredential]
        $GlobalAdminAccount
    )

    Write-Verbose -Message "Setting Policy Tip config for $Name"

    $currentPolicyTipConfig = Get-TargetResource @PSBoundParameters

    #region Telemetry
    $data = [System.Collections.Generic.Dictionary[[String], [String]]]::new()
    $data.Add("Resource", $MyInvocation.MyCommand.ModuleName)
    $data.Add("Method", $MyInvocation.MyCommand)
    Add-M365DSCTelemetryEvent -Data $data
    #endregion

    Test-MSCloudLogin -CloudCredential $GlobalAdminAccount `
        -Platform ExchangeOnline

    $NewPolicyTipConfigParams = @{
        Name    = $Name
        Value   = $Value
        Confirm = $false
    }

    $SetPolicyTipConfigParams = @{
        Identity = $Name
        Value    = $Value
        Confirm  = $false
    }

    # CASE: Policy Tip Config doesn't exist but should;
    if ($Ensure -eq "Present" -and $currentPolicyTipConfig.Ensure -eq "Absent")
    {
        Write-Verbose -Message "Policy Tip Config '$($Name)' does not exist but it should. Create and configure it."
        # Create Policy Tip Config
        New-PolicyTipConfig @NewPolicyTipConfigParams

    }
    # CASE: Policy Tip Config exists but it shouldn't;
    elseif ($Ensure -eq "Absent" -and $currentPolicyTipConfig.Ensure -eq "Present")
    {
        Write-Verbose -Message "Policy Tip Config '$($Name)' exists but it shouldn't. Remove it."
        Remove-PolicyTipConfig -Identity $Name -Confirm:$false
    }
    # CASE: Policy Tip Config exists and it should, but has different values than the desired ones
    elseif ($Ensure -eq "Present" -and $currentPolicyTipConfig.Ensure -eq "Present")
    {
        Write-Verbose -Message "Policy Tip Config '$($Name)' already exists, but needs updating."
        Write-Verbose -Message "Setting Policy Tip Config $($Name) with values: $(Convert-M365DscHashtableToString -Hashtable $SetPolicyTipConfigParams)"
        Set-PolicyTipConfig @SetPolicyTipConfigParams
    }
}

function Test-TargetResource
{
    [CmdletBinding()]
    [OutputType([System.Boolean])]
    param
    (
        [Parameter(Mandatory = $true)]
        [System.String]
        $Name,

        [Parameter()]
        [System.String]
        $Value,

        [Parameter()]
        [ValidateSet('Present', 'Absent')]
        [System.String]
        $Ensure = 'Present',

        [Parameter(Mandatory = $true)]
        [System.Management.Automation.PSCredential]
        $GlobalAdminAccount
    )

    Write-Verbose -Message "Testing Policy Tip Config for $Name"

    $CurrentValues = Get-TargetResource @PSBoundParameters

    Write-Verbose -Message "Current Values: $(Convert-M365DscHashtableToString -Hashtable $CurrentValues)"
    Write-Verbose -Message "Target Values: $(Convert-M365DscHashtableToString -Hashtable $PSBoundParameters)"

    $ValuesToCheck = $PSBoundParameters
    $ValuesToCheck.Remove('GlobalAdminAccount') | Out-Null

    $TestResult = Test-Microsoft365DSCParameterState -CurrentValues $CurrentValues `
        -Source $($MyInvocation.MyCommand.Source) `
        -DesiredValues $PSBoundParameters `
        -ValuesToCheck $ValuesToCheck.Keys

    Write-Verbose -Message "Test-TargetResource returned $TestResult"

    return $TestResult
}

function Export-TargetResource
{
    [CmdletBinding()]
    [OutputType([System.String])]
    param
    (
        [Parameter(Mandatory = $true)]
        [System.Management.Automation.PSCredential]
        $GlobalAdminAccount
    )
    $InformationPreference = 'Continue'
    #region Telemetry
    $data = [System.Collections.Generic.Dictionary[[String], [String]]]::new()
    $data.Add("Resource", $MyInvocation.MyCommand.ModuleName)
    $data.Add("Method", $MyInvocation.MyCommand)
    Add-M365DSCTelemetryEvent -Data $data
    #endregion
    Test-MSCloudLogin -CloudCredential $GlobalAdminAccount `
        -Platform ExchangeOnline

    $dscContent = ""
    $command = Get-Command Get-PolicyTipConfig -ErrorAction SilentlyContinue
    if ($null -ne $command)
    {
        [array]$AllPolicyTips = Get-PolicyTipConfig

        $i = 1
        foreach ($PolicyTipConfig in $AllPolicyTips)
        {
            Write-Information " [$i/$($AllPolicyTips.Count)] $($PolicyTipConfig.Name)"

            $Params = @{
                Name               = $PolicyTipConfig.Name
                GlobalAdminAccount = $GlobalAdminAccount
            }
            $result = Get-TargetResource @Params
            $result.GlobalAdminAccount = Resolve-Credentials -UserName "globaladmin"
            $content = " EXOPolicyTipConfig " + (New-GUID).ToString() + "`r`n"
            $content += " {`r`n"
            $currentDSCBlock = Get-DSCBlock -Params $result -ModulePath $PSScriptRoot
            $content += Convert-DSCStringParamToVariable -DSCBlock $currentDSCBlock -ParameterName "GlobalAdminAccount"
            $content += " }`r`n"
            $dscContent += $content
            $i++
        }
    }
    return $dscContent
}

Export-ModuleMember -Function *-TargetResource