DSCResources/MSFT_TeamsEmergencyCallingPolicy/MSFT_TeamsEmergencyCallingPolicy.psm1

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

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

        [Parameter()]
        [System.String]
        [ValidatePattern("^(?:\+)?[0-9]*$")]
        $NotificationDialOutNumber,

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

        [Parameter()]
        [System.String]
        [ValidateSet("NotificationOnly", "ConferenceMuted", "ConferenceUnMuted")]
        $NotificationMode,

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

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

    Write-Verbose -Message "Getting the Teams Emergency Calling Policy {$Identity}"

    $ConnectionMode = New-M365DSCConnection -Platform 'MicrosoftTeams' `
        -InboundParameters $PSBoundParameters

    #region Telemetry
    $ResourceName = $MyInvocation.MyCommand.ModuleName.Replace("MSFT_", "")
    $data = [System.Collections.Generic.Dictionary[[String], [String]]]::new()
    $data.Add("Resource", $ResourceName)
    $data.Add("Method", $MyInvocation.MyCommand)
    $data.Add("Principal", $GlobalAdminAccount.UserName)
    $data.Add("TenantId", $TenantId)
    $data.Add("ConnectionMode", $ConnectionMode)
    Add-M365DSCTelemetryEvent -Data $data
    #endregion


    $nullReturn = $PSBoundParameters
    $nullReturn.Ensure = "Absent"
    try
    {
        $policy = Get-CsTeamsEmergencyCallingPolicy -Identity $Identity `
            -ErrorAction 'SilentlyContinue'

        if ($null -eq $policy)
        {
            Write-Verbose -Message "Could not find Teams Emergency Calling Policy {$Identity}"
            return $nullReturn
        }
        Write-Verbose -Message "Found Teams Emergency Calling Policy {$Identity}"
        $result = @{
            Identity                  = $Identity
            Description               = $policy.Description
            NotificationDialOutNumber = $policy.NotificationDialOutNumber
            NotificationGroup         = $policy.NotificationGroup
            NotificationMode          = $policy.NotificationMode
            Ensure                    = "Present"
            GlobalAdminAccount        = $GlobalAdminAccount
        }

        if ([System.String]::IsNullOrEmpty($result.NotificationMode))
        {
            $result.Remove("NotificationMode") | Out-Null
        }

        return $result
    }
    catch
    {
        try
        {
            Write-Verbose -Message $_
            $tenantIdValue = ""
            if (-not [System.String]::IsNullOrEmpty($TenantId))
            {
                $tenantIdValue = $TenantId
            }
            elseif ($null -ne $GlobalAdminAccount)
            {
                $tenantIdValue = $GlobalAdminAccount.UserName.Split('@')[1]
            }
            Add-M365DSCEvent -Message $_ -EntryType 'Error' `
                -EventID 1 -Source $($MyInvocation.MyCommand.Source) `
                -TenantId $tenantIdValue
        }
        catch
        {
            Write-Verbose -Message $_
        }
        return $nullReturn
    }
}

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

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

        [Parameter()]
        [System.String]
        [ValidatePattern("^(?:\+)?[0-9]*$")]
        $NotificationDialOutNumber,

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

        [Parameter()]
        [System.String]
        [ValidateSet("NotificationOnly", "ConferenceMuted", "ConferenceUnMuted")]
        $NotificationMode,

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

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

    Write-Verbose -Message "Setting Teams Emergency Calling Policy {$Identity}"

    # Check that at least one optional parameter is specified
    $inputValues = @()
    foreach ($item in $PSBoundParameters.Keys)
    {
        if (-not [System.String]::IsNullOrEmpty($PSBoundParameters.$item) -and $item -ne 'GlobalAdminAccount' `
                -and $item -ne 'Identity' -and $item -ne 'Ensure')
        {
            $inputValues += $item
        }
    }

    if ($inputValues.Count -eq 0)
    {
        throw "You need to specify at least one optional parameter for the Set-TargetResource function" + `
            " of the [TeamsEmergencyCallingPolicy] instance {$Identity}"
    }

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

    $ConnectionMode = New-M365DSCConnection -Platform 'MicrosoftTeams' `
        -InboundParameters $PSBoundParameters

    $CurrentValues = Get-TargetResource @PSBoundParameters

    $SetParameters = $PSBoundParameters
    $SetParameters.Remove("Ensure") | Out-Null
    $SetParameters.Remove("GlobalAdminAccount") | Out-Null

    if ($Ensure -eq 'Present' -and $CurrentValues.Ensure -eq 'Absent')
    {
        Write-Verbose -Message "Creating a new Teams Emergency Calling Policy {$Identity}"
        New-CsTeamsEmergencyCallingPolicy @SetParameters
    }
    elseif ($Ensure -eq 'Present' -and $CurrentValues.Ensure -eq 'Present')
    {
        # If we get here, it's because the Test-TargetResource detected a drift, therefore we always call
        # into the Set-CsTeamsEmergencyCallingPolicy cmdlet.
        Write-Verbose -Message "Updating settings for Teams Emergency Calling Policy {$Identity}"
        Set-CsTeamsEmergencyCallingPolicy @SetParameters
    }
    elseif ($Ensure -eq 'Absent' -and $CurrentValues.Ensure -eq 'Present')
    {
        Write-Verbose -Message "Removing existing Teams Emergency Calling Policy {$Identity}"
        Remove-CsTeamsEmergencyCallingPolicy -Identity $Identity -Confirm:$false
    }
}

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

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

        [Parameter()]
        [System.String]
        [ValidatePattern("^(?:\+)?[0-9]*$")]
        $NotificationDialOutNumber,

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

        [Parameter()]
        [System.String]
        [ValidateSet("NotificationOnly", "ConferenceMuted", "ConferenceUnMuted")]
        $NotificationMode,

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

        [Parameter(Mandatory = $true)]
        [System.Management.Automation.PSCredential]
        $GlobalAdminAccount
    )
    #region Telemetry
    $ResourceName = $MyInvocation.MyCommand.ModuleName.Replace("MSFT_", "")
    $data = [System.Collections.Generic.Dictionary[[String], [String]]]::new()
    $data.Add("Resource", $ResourceName)
    $data.Add("Method", $MyInvocation.MyCommand)
    $data.Add("Principal", $GlobalAdminAccount.UserName)
    $data.Add("TenantId", $TenantId)
    Add-M365DSCTelemetryEvent -Data $data
    #endregion

    Write-Verbose -Message "Testing configuration of Team Emergency Calling Policy {$Identity}"

    $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-M365DSCParameterState -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
    )
    $ConnectionMode = New-M365DSCConnection -Platform 'MicrosoftTeams' `
        -InboundParameters $PSBoundParameters

    #region Telemetry
    $ResourceName = $MyInvocation.MyCommand.ModuleName.Replace("MSFT_", "")
    $data = [System.Collections.Generic.Dictionary[[String], [String]]]::new()
    $data.Add("Resource", $ResourceName)
    $data.Add("Method", $MyInvocation.MyCommand)
    $data.Add("Principal", $GlobalAdminAccount.UserName)
    $data.Add("TenantId", $TenantId)
    $data.Add("ConnectionMode", $ConnectionMode)
    Add-M365DSCTelemetryEvent -Data $data
    #endregion

    try
    {
        $organization = ""
        if ($GlobalAdminAccount.UserName.Contains("@"))
        {
            $organization = $GlobalAdminAccount.UserName.Split("@")[1]
        }

        $i = 1
        [array]$policies = Get-CsTeamsEmergencyCallingPolicy -ErrorAction Stop
        $dscContent = ''
        Write-Host "`r`n" -NoNewline
        foreach ($policy in $policies)
        {
            Write-Host " |---[$i/$($policies.Count)] $($policy.Identity)" -NoNewline
            $params = @{
                Identity           = $policy.Identity
                GlobalAdminAccount = $GlobalAdminAccount
            }
            $Results = Get-TargetResource @Params
            $Results = Update-M365DSCExportAuthenticationResults -ConnectionMode $ConnectionMode `
                -Results $Results
            $currentDSCBlock = Get-M365DSCExportContentForResource -ResourceName $ResourceName `
                -ConnectionMode $ConnectionMode `
                -ModulePath $PSScriptRoot `
                -Results $Results `
                -GlobalAdminAccount $GlobalAdminAccount
            $dscContent += $currentDSCBlock
            Save-M365DSCPartialExport -Content $currentDSCBlock `
                -FileName $Global:PartialExportFileName
            $i++
            Write-Host $Global:M365DSCEmojiGreenCheckMark
        }
        return $dscContent
    }
    catch
    {
        try
        {
            Write-Verbose -Message $_
            $tenantIdValue = ""
            if (-not [System.String]::IsNullOrEmpty($TenantId))
            {
                $tenantIdValue = $TenantId
            }
            elseif ($null -ne $GlobalAdminAccount)
            {
                $tenantIdValue = $GlobalAdminAccount.UserName.Split('@')[1]
            }
            Add-M365DSCEvent -Message $_ -EntryType 'Error' `
                -EventID 1 -Source $($MyInvocation.MyCommand.Source) `
                -TenantId $tenantIdValue
        }
        catch
        {
            Write-Verbose -Message $_
        }
        return ""
    }
}

Export-ModuleMember -Function *-TargetResource