Initial commit

Signed-off-by: Luke Tainton <luke@tainton.uk>

Import-TeamsUsers.ps1

@@ -0,0 +1,49 @@
+function Import-TeamsUsers {
+    Param(
+        [parameter(Mandatory=$true,HelpMessage="Specify Group ID")]
+        $GroupId,
+        [parameter(Mandatory=$true,HelpMessage="Specify CSV file")]
+        $File
+    )
+
+    # Import CSV file and required module
+    $Users = Import-CSV $File
+    $UserCount = $Users | Measure-Object | Select-Object -expand count
+    Import-Module -Name MicrosoftTeams
+
+    # Check Team exists
+    Try {
+        $Team = Get-Team -GroupId $GroupId
+        If ($Team) {
+            $TeamName = $Team.DisplayName
+            Write-Host -ForegroundColor Green "Team $TeamName exists!"
+        }
+    } Catch [System.UnauthorizedAccessException] {
+        # User is not authenticated
+        Write-Host -ForegroundColor Red "You need to authenticate to Microsoft Teams before continuing. Please run 'Connect-MicrosoftTeams' and try again."
+        Break
+    } Catch [System.Net.Http.HttpRequestException] {
+        # Team does not exist
+        Write-Host -ForegroundColor Red "Team with ID $GroupId does not exist!"
+        Break
+    }
+
+    $Consent = Read-Host -Prompt "You are about to add $UserCount users. Are you sure? [y/N]"
+    If ($Consent -eq "y" -Or $Consent -eq "Y") {
+        $Users | ForEach-Object {
+            $User = $_.email
+            $Role = $_.role
+            Write-Host "Adding user $User with role $Role"
+            Add-TeamUser -GroupId $GroupId -Role $Role -User $User -ErrorAction SilentlyContinue
+        }
+    } Else {
+        Write-Host -ForegroundColor Red "Aborting."
+    }
+
+}
+
+
+$GroupId = ""
+$File = ""
+
+Import-TeamsUsers -GroupId $GroupId -File $File