TeamsFunctions

21.1.10-prerelease

Public/Functions/Session/Assert-SkypeOnlineConnection.ps1

# Module: TeamsFunctions
# Function: Session
# Author: David Eberhardt
# Updated: 01-OCT-2020
# Status: PreLive




function Assert-SkypeOnlineConnection {
  <#
    .SYNOPSIS
        Asserts an established Connection to SkypeOnline
    .DESCRIPTION
        Tests and tries to reconnect to a SkypeOnline connection already established.
    .EXAMPLE
        Assert-SkypeOnlineConnection
    Will run Test-SkypeOnlineConnection and, if successful, stops.
    If unsuccessful, tries to reconnect by running Get-CsTenant to prompt for reconnection.
    If that too is unsuccessful, displays request to reconnect with Connect-Me.
  .LINK
    https://github.com/DEberhardt/TeamsFunctions/tree/master/docs/
  #>

  [CmdletBinding()]
  [Alias('PoL')]
  [OutputType([Boolean])]
  param() #param

  begin {
    $Stack = Get-PSCallStack
    $Called = ($stack.length -ge 3)

  } #begin

  process {

    if (Test-SkypeOnlineConnection) {
      if ( $Called ) {
        return $true
      }
      else {
        try {
          $null = Get-CsTenant -ErrorAction STOP -WarningAction SilentlyContinue
          Write-Verbose -Message "[ASSERT] SkypeOnline: Connected (and session is valid)"
          return
        }
        catch {
          Write-Host "[ASSERT] ERROR: Session is available, but timed out. Please disconnect and create a new session with Connect-SkypeOnline or Connect-Me." -ForegroundColor Red
          Write-Verbose "[ASSERT] INFO: Connect-Me can be used to disconnect, then connect to multiple Services at once (SkypeOnline, AzureAD & MicrosoftTeams)!"
          return
        }
      }
    }
    else {
      $Sessions = Get-PSSession -WarningAction SilentlyContinue
      $SkypeSession = $Sessions | Where-Object { $_.Computername -match "online.lync.com" -or $_.ComputerName -eq "api.interfaces.records.teams.microsoft.com" }
      if ( $SkypeSession ) {
        Write-Verbose "[ASSERT] SkypeOnline: Session found. Trying to reconnect... (authentication required)" -Verbose
        try {
          $null = Get-CsTenant -ErrorAction STOP -WarningAction SilentlyContinue
          return $(if ($Called) { $true })
        }
        catch {
          Write-Host "[ASSERT] ERROR: Reconnect unsuccessful. Please disconnect and create a new session with Connect-SkypeOnline or Connect-Me." -ForegroundColor Red
          return $(if ($Called) { $false })
        }
      }
      else {
        $TeamsSession = $Sessions | Where-Object { $_.Computername -eq "api.interfaces.records.teams.microsoft.com" }
        if ( $TeamsSession ) {
          Write-Verbose "[ASSERT] SkypeOnline: Session found. Trying to reconnect... (authentication required)" -Verbose
          $Connection = Connect-SkypeOnline
          if ( Test-SkypeOnlineConnection ) {
            if ($stack.length -ge 5) {
              return $true
            }
            else {
              try {
                $Tenant = Get-CsTenant -WarningAction SilentlyContinue -errorAction Stop
                if ($Called) {
                  return $(if ($Called) { $true } else { $Connection })
                }

              }
              catch {
                return $(if ($Called) { $false })
              }
            }

            else {
              return $Connection
            }
          }
        }
        else {
          Write-Host "[ASSERT] ERROR: You must call the Connect-SkypeOnline cmdlet before calling any other cmdlets. (Connect-Me can be used for multiple connections) " -ForegroundColor Red
          return $(if ($Called) { $false })
        }
      }
    }

  } #process

  end {

  } #end

} #Assert-SkypeOnlineConnection