TeamsAAAdministration.ps1

Param(

    [Parameter (Mandatory= $true)]
  
    [String] $autoAttendantName,
  
    [Parameter (Mandatory= $false)]
  
    [String] $HolidayName,
  
    [Parameter (Mandatory= $false)]
  
    [String] $StartDate,
  
    [Parameter (Mandatory= $false)]
  
    [String] $EndDate,
  
    [Parameter (Mandatory= $false)]
  
    [String] $GreetingText,
  
    [Parameter (Mandatory= $false)]
  
    [String] $GreetingFileID,
  
    [Parameter (Mandatory= $false)]
  
    [String] $Choice
  
   
  )

### Teams AA Administration                           ###
### Version 1.0                                       ###
### Author: Alexander Holmeset                        ###
### Email: alexander.holmeset@gmail.com               ###
### Twitter: twitter.com/alexholmeset                 ###
### Blog: alexholmeset.blog                           ###
  
  $TenantId = 'xxxxxxxxxxxxx'
  $ClientID = 'xxxxxxx'
  $ClientSecret = Get-AutomationVariable -Name 'secret'

  $Credentials = Get-AutomationPSCredential -Name 'admin'
  connect-microsoftteams -Credential $Credentials 
 

  function Get-MSGraphAppToken{
      <#  .SYNOPSIS
          Get an app based authentication token required for interacting with Microsoft Graph API
      .PARAMETER TenantID
          A tenant ID should be provided.
     
      .PARAMETER ClientID
          Application ID for an Azure AD application. Uses by default the Microsoft Intune PowerShell application ID.
     
      .PARAMETER ClientSecret
          Web application client secret.
            
      .EXAMPLE
          # Manually specify username and password to acquire an authentication token:
          Get-MSGraphAppToken -TenantID $TenantID -ClientID $ClientID -ClientSecert = $ClientSecret 
      .NOTES
          Author: Jan Ketil Skanke
          Contact: @JankeSkanke
          Created: 2020-15-03
          Updated: 2020-15-03
     
          Version history:
          1.0.0 - (2020-03-15) Function created      
      #>
  [CmdletBinding()]
      param (
          [parameter(Mandatory = $true, HelpMessage = "Your Azure AD Directory ID should be provided")]
          [ValidateNotNullOrEmpty()]
          [string]$TenantID,
          [parameter(Mandatory = $true, HelpMessage = "Application ID for an Azure AD application")]
          [ValidateNotNullOrEmpty()]
          [string]$ClientID,
          [parameter(Mandatory = $true, HelpMessage = "Azure AD Application Client Secret.")]
          [ValidateNotNullOrEmpty()]
          [string]$ClientSecret
          )
  Process {
      $ErrorActionPreference = "Stop"
           
      # Construct URI
      $uri = "https://login.microsoftonline.com/$tenantId/oauth2/v2.0/token"
      # Construct Body
      $body = @{
          client_id     = $clientId
          scope         = "https://graph.microsoft.com/.default"
          client_secret = $clientSecret
          grant_type    = "client_credentials"
          }
        
      try {
          $MyTokenRequest = Invoke-WebRequest -Method Post -Uri $uri -ContentType "application/x-www-form-urlencoded" -Body $body -UseBasicParsing
          $MyToken =($MyTokenRequest.Content | ConvertFrom-Json).access_token
              If(!$MyToken){
                  Write-Warning "Failed to get Graph API access token!"
                  Exit 1
              }
          $MyHeader = @{"Authorization" = "Bearer $MyToken" }
         }
      catch [System.Exception] {
          Write-Warning "Failed to get Access Token, Error message: $($_.Exception.Message)"; break
      }
      return $MyHeader
      }
  }
    

  $global:Header = Get-MSGraphAppToken -TenantID $TenantId -ClientID $ClientID -ClientSecret $ClientSecret
  
  
  

  
  
  
  
  $AutoAttendantID = (Get-CsAutoAttendant | Where-Object{$_.Name -like "$AutoAttendantName"}).Identity
  
  $autoAttendant = Get-CsAutoAttendant -Identity "$AutoAttendantID"
  
  
  

  

  
  If($Choice -like "Audio"){
  
  
  $uri = "https://graph.microsoft.com/v1.0/users/$($credentials.username)/drive/items/$GreetingFileID/content"
  
  $content = Invoke-RestMethod -Method GET -Headers $global:Header -uri $uri -OutFile c:\temp\greeting.wav
  $content = Get-Content "C:\temp\greeting.wav" -asbytestream
  $audioFile = Import-CsOnlineAudioFile -ApplicationId "OrgAutoAttendant" -FileName "greeting.wav" -Content $content
  $GreetingPrompt = New-CsAutoAttendantPrompt -AudioFilePrompt $audioFile
  
  }
  
  if($Choice -like "Text"){
  
  $GreetingPrompt = New-CsAutoAttendantPrompt -TextToSpeechPrompt $GreetingText
  
  }
  
  
  $StartDate = Get-Date $StartDate -Format "dd/MM/yyyy"
  $EndDate = Get-Date $EndDate -Format "dd/MM/yyyy"

  $MenuOption = New-CsAutoAttendantMenuOption -Action DisconnectCall -DtmfResponse Automatic
  
  $Menu = New-CsAutoAttendantMenu -Name "$HolidayName Menu" -MenuOptions @($MenuOption)
  
  $CallFlow = New-CsAutoAttendantCallFlow -Name "$HolidayName" -Greetings @($GreetingPrompt) -Menu $Menu
  
  $dtr = New-CsOnlineDateTimeRange -Start $StartDate -End $EndDate
  
  $Schedule = New-CsOnlineSchedule -Name "$HolidayName" -FixedSchedule -DateTimeRanges @($dtr)
  
  $CallHandlingAssociation = New-CsAutoAttendantCallHandlingAssociation -Type Holiday -ScheduleId $Schedule.Id -CallFlowId $CallFlow.Id
  
  $autoAttendant.CallFlows += @($CallFlow)
  
  $autoAttendant.CallHandlingAssociations += @($CallHandlingAssociation)
  
  Set-CsAutoAttendant -Instance $autoAttendant