add_user_to_ad_group.ps1

<#
.NAME
add_user_to_ad_groups.ps1

.PARAMETER username
Username which you will add group memberships to.

.PARAMETER import_file
If not running in single_group mode (see single_group parameter), declare the CSV file that holds all desired groups to make the user become a member of.

.PARAMETER single_group
If you do not have an import_file, do not want to use the default, and only have a single_group to declare, specify here as a string.

This supports an array, but if you are adding multiple you should really move it to an import_file, and store that in source.

.EXAMPLE
./add_user_to_ad_group.ps1 -username nicholas.thieling

.EXAMPLE
./add_user_to_ad_group.ps1 -username nicholas.thieling -single_group "APP_OrderDataSearch_Admin-QA"

.EXAMPLE
./add_user_to_ad_group.ps1 -username nicholas.thieling -import_file "C:\Users\nicholas.thieling\Downloads\some_department_adgroups.csv"
#>
param(
    [Parameter(Mandatory=$true)]
    [String]
    $username,
    
    [String]
    $import_file = "devops_engineer_ad_groups.csv",

    [String]
    $single_group
)
$ErrorActionPreference = "Stop"
Import-Module ActiveDirectory

if ($null -eq (Get-ADUser -Filter {sAMAccountName -eq $username})) {
    Write-Error "Unable to find account ""$username"", please verify. You also may need to run powershell as another user to do this operation."
}

if ($single_group) {
    foreach ($group in $single_group) {
        Add-ADGroupMember -Identity $group -Member $username
    }
}
else {
    $groups = Import-CSV $import_file

    foreach ($group in $groups) {
        Add-ADGroupMember -Identity $group -Member $username
    }
}