UNIT3D-Community-Edition/app/Http/Controllers/Auth/ActivationController.php

<?php
/**
 * NOTICE OF LICENSE.
 *
 * UNIT3D Community Edition is open-sourced software licensed under the GNU Affero General Public License v3.0
 * The details is bundled with this project in the file LICENSE.txt.
 *
 * @project    UNIT3D Community Edition
 *
 * @author     HDVinnie <hdinnovations@protonmail.com>
 *
 * @license    https://www.gnu.org/licenses/agpl-3.0.en.html/ GNU Affero General Public License v3.0
 */

namespace App\Http\Controllers\Auth;

use App\Http\Controllers\Controller;
use App\Models\Group;
use App\Models\UserActivation;

class ActivationController extends Controller
{
    public function activate($token)
    {
        $banned_group = cache()->rememberForever('banned_group', function () {
            return Group::where('slug', '=', 'banned')->pluck('id');
        });
        $member_group = cache()->rememberForever('member_group', function () {
            return Group::where('slug', '=', 'user')->pluck('id');
        });

        $activation = UserActivation::with('user')->where('token', '=', $token)->firstOrFail();
        if ($activation->user->id && $activation->user->group->id != $banned_group[0]) {
            $activation->user->active = 1;
            $activation->user->can_upload = 1;
            $activation->user->can_download = 1;
            $activation->user->can_request = 1;
            $activation->user->can_comment = 1;
            $activation->user->can_invite = 1;
            $activation->user->group_id = $member_group[0];
            $activation->user->save();

            $activation->delete();

            return redirect()->route('login')
                ->withSuccess(trans('auth.activation-success'));
        } else {
            return redirect()->route('login')
                ->withErrors(trans('auth.activation-error'));
        }
    }
}