RemoveWiki.ps1

#Application logon
# Azure AD OAuth Application Token for Graph API

# Get OAuth token for a AAD Application (returned as $token)


 #Application (client) ID, tenant ID and secret

 $clientId = "xxxx"

 $tenantId = "xxxx"
 
 $clientSecret = "xxxxx"
 
 
 
 # Contruct URI
 
 $uri = "https://login.microsoftonline.com/$tenantId/oauth2/v2.0/token"
 
 
 
 # Construct Body
 
 $body1 = @{
 
     client_id     = $clientId
 
     scope         = "https://graph.microsoft.com/.default"
 
     client_secret = $clientSecret
 
     grant_type    = "client_credentials"
 
 }
 
 
 
 # Get OAuth 2.0 Token
 
 $tokenRequest = Invoke-WebRequest -Method Post -Uri $uri -ContentType "application/x-www-form-urlencoded" -Body $body1 -UseBasicParsing
  
 
 
 $token = ($tokenRequest.Content | ConvertFrom-Json).access_token
 
$token


$uri = 'https://graph.microsoft.com/v1.0/groups'

$query = Invoke-RestMethod -Method GET -Uri $uri -ContentType "application/json" -Headers @{Authorization = "Bearer $token"}
$groups = $query.value

foreach($group in $groups){
if($group.resourceProvisioningOptions -contains 'Team'){
    $id = $group.id
    $uri2 = 'https://graph.microsoft.com/v1.0/teams/'+$id+'/channels'
    $query2 = Invoke-RestMethod -Method GET -Uri $uri2 -ContentType "application/json" -Headers @{Authorization = "Bearer $token"}
    $Channels = $query2.value
    Foreach($Channel in $Channels){

        $id2 = $Channel.id
        $uri3 = 'https://graph.microsoft.com/v1.0/teams/'+$id+'/channels/'+$id2+'/tabs'

        $query3 = Invoke-RestMethod -Method GET -Uri $uri3 -ContentType "application/json" -Headers @{Authorization = "Bearer $token"}

        $tabs = $query3.value
        $WikiTabs = $tabs | Where-Object{$_.displayname -eq 'Wiki'}
        If($WikiTabs){
        Foreach($wikitab in $WikiTabs){    
        $wikitabID = $WikiTabs.id
        $uri4 = 'https://graph.microsoft.com/v1.0/teams/'+$id+'/channels/'+$id2+'/tabs/'+$wikitabID

        $query4 = Invoke-RestMethod -Method DELETE -Uri $uri4 -ContentType "application/json" -Headers @{Authorization = "Bearer $token"}
        "wikitab removed"
        }
        }





    
    }


    


}
}