check if Site collection Taxonomy group exists

checkSitecollectionTaxonomygroup.ps1

#Credentials to connect to office 365 site collection url 
$url ="https://velegandla.sharepoint.com/sites/training"
$username="[email protected]"
$password="yourpassword"
$Password = $password |ConvertTo-SecureString -AsPlainText -force

Write-Host "Load CSOM libraries" -foregroundcolor black -backgroundcolor yellow
Set-Location $PSScriptRoot
Add-Type -Path (Resolve-Path "Microsoft.SharePoint.Client.dll")
Add-Type -Path (Resolve-Path "Microsoft.SharePoint.Client.Runtime.dll")
Add-Type -Path (Resolve-Path "Microsoft.Online.SharePoint.Client.Tenant.dll")
Add-Type -Path (Resolve-Path "Microsoft.SharePoint.Client.Taxonomy.dll")
Write-Host "CSOM libraries loaded successfully" -foregroundcolor black -backgroundcolor Green 

Write-Host "authenticate to SharePoint Online site collection $url and get ClientContext object" -foregroundcolor black -backgroundcolor yellow  
$Context = New-Object Microsoft.SharePoint.Client.ClientContext($url) 
$credentials = New-Object Microsoft.SharePoint.Client.SharePointOnlineCredentials($username, $password) 
$Context.Credentials = $credentials 
$context.RequestTimeOut = 5000 * 60 * 10;
$web = $context.Web
$site = $context.Site 
$context.Load($web)
$context.Load($site)
try
{
  $context.ExecuteQuery()
  Write-Host "authenticateed to SharePoint Online site collection $url and get ClientContext object succeefully" -foregroundcolor black -backgroundcolor Green
}
catch
{
  Write-Host "Not able to authenticateed to SharePoint Online site collection $_.Exception.Message" -foregroundcolor black -backgroundcolor Red
  return
}
#Getting Term store Information
function Get-TermStoreInfo
{
  Write-Host "Loading taxonomy session" -foregroundcolor black -backgroundcolor yellow
  $session = [Microsoft.SharePoint.Client.Taxonomy.TaxonomySession]::GetTaxonomySession($context)
  $context.Load($session)
  $context.ExecuteQuery()
  Write-Host "Loading term stores" -foregroundcolor black -backgroundcolor yellow
  $termStores = $session.TermStores
  $context.Load($termStores)
  try
  {
    $context.ExecuteQuery()
    $termStore = $termStores[0]
    Write-Host "Term store with the following id is loaded:" $termStore.Id -foregroundcolor black -backgroundcolor Green
  }
  catch
  {
    Write-Host "Error detail while getting term store id" $_.Exception.Message -foregroundcolor black -backgroundcolor Red
    return
  }
  return $termStore
}

#Check if the site collection taxonomy group exists or not using IsSiteCollectionGroup property of taxonomy group
function CheckSiteCollectionTaxonomygroupexists
{
$termStore = Get-TermStoreInfo $context  
Write-Host "Check if the group exists if not available create it" -foregroundcolor black -backgroundcolor yellow
$groups = $termStore.Groups
$context.Load($groups)
try
{
  $context.ExecuteQuery()
  Write-Host "List of groups from term store loaded successfully" -foregroundcolor black -backgroundcolor Green
}
catch
{
  Write-Host "Error while getting list of groups from term store" $_.Exception.Message -foregroundcolor black -backgroundcolor Red
  return
}

$siteCollectionTaxonomyGroup = $false
foreach($group in $groups)
{
if($group.IsSiteCollectionGroup)
{
  Write-Host "Site Collection $url Taxonomy group already exists."  -foregroundcolor black -backgroundcolor Green
  $siteCollectionTaxonomyGroup = $true
}
}
if(!$siteCollectionTaxonomyGroup)
{
  Write-Host "Site Collection $url Taxonomy group doesn't exists."  -foregroundcolor black -backgroundcolor RED 
}
} 
Write-Host "Check whether the Site collection Taxonomy group is exist or not" -foregroundcolor black -backgroundcolor yellow
CheckSiteCollectionTaxonomygroupexists