<?php

namespace Grocy\Controllers;

use Grocy\Controllers\Users\User;
use Grocy\Services\ApiKeyService;
use Grocy\Services\ApplicationService;
use Grocy\Services\BatteriesService;
use Grocy\Services\CalendarService;
use Grocy\Services\ChoresService;
use Grocy\Services\DatabaseService;
use Grocy\Services\FilesService;
use Grocy\Services\LocalizationService;
use Grocy\Services\PrintService;
use Grocy\Services\RecipesService;
use Grocy\Services\SessionService;
use Grocy\Services\StockService;
use Grocy\Services\TasksService;
use Grocy\Services\UserfieldsService;
use Grocy\Services\UsersService;

class BaseController
{
	public function __construct(\DI\Container $container)
	{
		$this->AppContainer = $container;
		$this->View = $container->get('view');
	}

	protected $AppContainer;

	protected function getApiKeyService()
	{
		return ApiKeyService::getInstance();
	}

	protected function getApplicationservice()
	{
		return ApplicationService::getInstance();
	}

	protected function getBatteriesService()
	{
		return BatteriesService::getInstance();
	}

	protected function getCalendarService()
	{
		return CalendarService::getInstance();
	}

	protected function getChoresService()
	{
		return ChoresService::getInstance();
	}

	protected function getDatabase()
	{
		return $this->getDatabaseService()->GetDbConnection();
	}

	protected function getDatabaseService()
	{
		return DatabaseService::getInstance();
	}

	protected function getFilesService()
	{
		return FilesService::getInstance();
	}

	protected function getLocalizationService()
	{
		if (!defined('GROCY_LOCALE'))
		{
			define('GROCY_LOCALE', GROCY_DEFAULT_LOCALE);
		}

		return LocalizationService::getInstance(GROCY_LOCALE);
	}

	protected function getRecipesService()
	{
		return RecipesService::getInstance();
	}

	protected function getSessionService()
	{
		return SessionService::getInstance();
	}

	protected function getStockService()
	{
		return StockService::getInstance();
	}

	protected function getPrintService()
	{
		return PrintService::getInstance();
	}

	protected function getTasksService()
	{
		return TasksService::getInstance();
	}

	protected function getUserfieldsService()
	{
		return UserfieldsService::getInstance();
	}

	protected function getUsersService()
	{
		return UsersService::getInstance();
	}

	protected function render($response, $page, $data = [])
	{
		$container = $this->AppContainer;

		$versionInfo = $this->getApplicationService()->GetInstalledVersion();
		$this->View->set('version', $versionInfo->Version);
		$this->View->set('releaseDate', $versionInfo->ReleaseDate);

		$localizationService = $this->getLocalizationService();
		$this->View->set('__t', function (string $text, ...$placeholderValues) use ($localizationService) {
			return $localizationService->__t($text, $placeholderValues);
		});
		$this->View->set('__n', function ($number, $singularForm, $pluralForm, $isQu = false) use ($localizationService) {
			return $localizationService->__n($number, $singularForm, $pluralForm, $isQu);
		});
		$this->View->set('LocalizationStrings', $localizationService->GetPoAsJsonString());
		$this->View->set('LocalizationStringsQu', $localizationService->GetPoAsJsonStringQu());

		// TODO: Better handle this generically based on the current language (header in .po file?)
		$dir = 'ltr';
		if (GROCY_LOCALE == 'he_IL')
		{
			$dir = 'rtl';
		}
		$this->View->set('dir', $dir);

		$this->View->set('U', function ($relativePath, $isResource = false) use ($container) {
			return $container->get('UrlManager')->ConstructUrl($relativePath, $isResource);
		});

		$embedded = false;
		if (isset($_GET['embedded']))
		{
			$embedded = true;
		}
		$this->View->set('embedded', $embedded);

		$constants = get_defined_constants();
		foreach ($constants as $constant => $value)
		{
			if (substr($constant, 0, 19) !== 'GROCY_FEATURE_FLAG_')
			{
				unset($constants[$constant]);
			}
		}

		$this->View->set('featureFlags', $constants);
		if (GROCY_AUTHENTICATED)
		{
			$this->View->set('permissions', User::PermissionList());

			$decimalPlacesAmounts = intval($this->getUsersService()->GetUserSetting(GROCY_USER_ID, 'stock_decimal_places_amounts'));
			if ($decimalPlacesAmounts <= 0)
			{
				$defaultMinAmount = 1;
			}
			else
			{
				$defaultMinAmount = '0.' . str_repeat('0', $decimalPlacesAmounts - 1) . '1';
			}
			$this->View->set('DEFAULT_MIN_AMOUNT', $defaultMinAmount);
		}

		return $this->View->render($response, $page, $data);
	}

	protected function renderPage($response, $page, $data = [])
	{
		$this->View->set('userentitiesForSidebar', $this->getDatabase()->userentities()->where('show_in_sidebar_menu = 1')->orderBy('name'));
		try
		{
			$usersService = $this->getUsersService();
			if (defined('GROCY_USER_ID'))
			{
				$this->View->set('userSettings', $usersService->GetUserSettings(GROCY_USER_ID));
			}
			else
			{
				$this->View->set('userSettings', null);
			}
		}
		catch (\Exception $ex)
		{
			// Happens when database is not initialised or migrated...
		}

		return $this->render($response, $page, $data);
	}

	private static $htmlPurifierInstance = null;

	protected function GetParsedAndFilteredRequestBody($request)
	{
		if (self::$htmlPurifierInstance == null)
		{
			$htmlPurifierConfig = \HTMLPurifier_Config::createDefault();
			$htmlPurifierConfig->set('Cache.SerializerPath', GROCY_DATAPATH . '/viewcache');
			$htmlPurifierConfig->set('HTML.Allowed', 'div,b,strong,i,em,u,a[href|title|target],iframe[src|width|height|frameborder],ul,ol,li,p[style],br,span[style],img[style|width|height|alt|src],table[border|width|style],tbody,tr,td,th,blockquote,*[style|class|id],h1,h2,h3,h4,h5,h6');
			$htmlPurifierConfig->set('Attr.EnableID', true);
			$htmlPurifierConfig->set('HTML.SafeIframe', true);
			$htmlPurifierConfig->set('CSS.AllowedProperties', 'font,font-size,font-weight,font-style,font-family,text-decoration,padding-left,color,background-color,text-align,width,height');
			$htmlPurifierConfig->set('URI.AllowedSchemes', ['data' => true, 'http' => true, 'https' => true]);
			$htmlPurifierConfig->set('URI.SafeIframeRegexp', '%^.*%'); // Allow any iframe source
			$htmlPurifierConfig->set('CSS.MaxImgLength', null);

			self::$htmlPurifierInstance = new \HTMLPurifier($htmlPurifierConfig);
		}

		$requestBody = $request->getParsedBody();
		foreach ($requestBody as $key => &$value)
		{
			// HTMLPurifier removes boolean values (true/false) and arrays, so explicitly keep them
			// Maybe also possible through HTMLPurifier config (http://htmlpurifier.org/live/configdoc/plain.html)
			if (!is_bool($value) && !is_array($value))
			{
				$value = self::$htmlPurifierInstance->purify($value);

				// Allow some special chars
				// Maybe also possible through HTMLPurifier config (http://htmlpurifier.org/live/configdoc/plain.html)
				$value = str_replace('&amp;', '&', $value);
				$value = str_replace('&gt;', '>', $value);
				$value = str_replace('&lt;', '<', $value);
			}
		}

		return $requestBody;
	}
}