<?php

declare(strict_types=1);

/**
 * SPDX-FileCopyrightText: 2024 Nextcloud GmbH and Nextcloud contributors
 * SPDX-License-Identifier: AGPL-3.0-or-later
 */
namespace OCA\Dashboard\Service;

use JsonException;
use OCP\Accounts\IAccountManager;
use OCP\Accounts\PropertyDoesNotExistException;
use OCP\AppFramework\Services\IAppConfig;
use OCP\Config\IUserConfig;
use OCP\IUserManager;

class DashboardService {
	public function __construct(
		private IUserConfig $userConfig,
		private IAppConfig $appConfig,
		private ?string $userId,
		private IUserManager $userManager,
		private IAccountManager $accountManager,
	) {

	}

	/**
	 * @return list<string>
	 */
	public function getLayout(): array {
		$systemDefault = $this->appConfig->getAppValueString('layout', 'recommendations,spreed,mail,calendar');
		return $this->sanitizeLayout(
			explode(',', $this->userConfig->getValueString($this->userId, 'dashboard', 'layout', $systemDefault)),
		);
	}

	/**
	 * @param list<string> $layout
	 * @return list<string>
	 */
	public function sanitizeLayout(array $layout): array {
		$seen = [];
		$result = [];
		foreach ($layout as $value) {
			if ($value === '' || isset($seen[$value])) {
				continue;
			}

			$seen[$value] = true;
			$result[] = $value;
		}

		return $result;
	}

	/**
	 * @return list<string>
	 */
	public function getStatuses(): array {
		$configStatuses = $this->userConfig->getValueString($this->userId, 'dashboard', 'statuses');
		try {
			// Parse the old format
			/** @var array<string, bool> $statuses */
			$statuses = json_decode($configStatuses, true, 512, JSON_THROW_ON_ERROR);
			// We avoid getting an empty array as it will not produce an object in UI's JS
			return array_keys(array_filter($statuses, static fn (bool $value) => $value));
		} catch (JsonException) {
			return array_values(array_filter(explode(',', $configStatuses), fn (string $value) => $value !== ''));
		}
	}

	public function getBirthdate(): string {
		if ($this->userId === null) {
			return '';
		}

		$user = $this->userManager->get($this->userId);
		if ($user === null) {
			return '';
		}

		$account = $this->accountManager->getAccount($user);

		try {
			$birthdate = $account->getProperty(IAccountManager::PROPERTY_BIRTHDATE);
		} catch (PropertyDoesNotExistException) {
			return '';
		}

		return $birthdate->getValue();
	}
}
