<?php

declare(strict_types=1);

/**
 * SPDX-FileCopyrightText: 2016-2024 Nextcloud GmbH and Nextcloud contributors
 * SPDX-FileCopyrightText: 2016 ownCloud, Inc.
 * SPDX-License-Identifier: AGPL-3.0-only
 */
namespace OC\Core\Command\User;

use OC\Files\View;
use OCP\IConfig;
use OCP\IUserManager;
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Helper\Table;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;

class Report extends Command {
	public const DEFAULT_COUNT_DIRS_MAX_USERS = 500;

	public function __construct(
		protected IUserManager $userManager,
		private IConfig $config,
	) {
		parent::__construct();
	}

	protected function configure(): void {
		$this
			->setName('user:report')
			->setDescription('shows how many users have access')
			->addOption(
				'count-dirs',
				null,
				InputOption::VALUE_NONE,
				'Also count the number of user directories in the database (could time out on huge installations, therefore defaults to no with ' . self::DEFAULT_COUNT_DIRS_MAX_USERS . '+ users)'
			)
		;
	}

	protected function execute(InputInterface $input, OutputInterface $output): int {
		$table = new Table($output);
		$table->setHeaders(['Account Report', '']);
		$userCountArray = $this->countUsers();
		$total = 0;
		if (!empty($userCountArray)) {
			$rows = [];
			foreach ($userCountArray as $classname => $users) {
				$total += $users;
				$rows[] = [$classname, $users];
			}

			$rows[] = [' '];
			$rows[] = ['total users', $total];
		} else {
			$rows[] = ['No backend enabled that supports user counting', ''];
		}
		$rows[] = [' '];

		if ($total <= self::DEFAULT_COUNT_DIRS_MAX_USERS || $input->getOption('count-dirs')) {
			$userDirectoryCount = $this->countUserDirectories();
			$rows[] = ['user directories', $userDirectoryCount];
		}

		$activeUsers = $this->userManager->countSeenUsers();
		$rows[] = ['active users', $activeUsers];

		$disabledUsers = $this->config->getUsersForUserValue('core', 'enabled', 'false');
		$disabledUsersCount = count($disabledUsers);
		$rows[] = ['disabled users', $disabledUsersCount];

		$table->setRows($rows);
		$table->render();
		return 0;
	}

	private function countUsers(): array {
		return $this->userManager->countUsers();
	}

	private function countUserDirectories(): int {
		$dataview = new View('/');
		$userDirectories = $dataview->getDirectoryContent('/', 'httpd/unix-directory');
		return count($userDirectories);
	}
}