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<?php

/**
 * @file classes/site/SiteDAO.inc.php
 *
 * Copyright (c) 2014-2021 Simon Fraser University
 * Copyright (c) 2000-2021 John Willinsky
 * Distributed under the GNU GPL v3. For full terms see the file docs/COPYING.
 *
 * @class SiteDAO
 * @ingroup site
 * @see Site
 *
 * @brief Operations for retrieving and modifying the Site object.
 */
import('lib.pkp.classes.site.Site');
import('classes.core.Services');

class SiteDAO extends DAO {

/** @var array Maps schema properties for the primary table to their column names */
	var $primaryTableColumns = [
		'redirect' => 'redirect',
		'primaryLocale' => 'primary_locale',
		'minPasswordLength' => 'min_password_length',
		'installedLocales' => 'installed_locales',
		'supportedLocales' => 'supported_locales',
	];

/**
	 * Retrieve site information.
	 * @return Site
	 */
	function getSite() {
		$result = $this->retrieve(
			'SELECT * FROM site'
		);

if ($row = (array) $result->current()) {
			return $this->_fromRow($row);
		}

return null;
	}

/**
	 * Instantiate and return a new DataObject.
	 * @return Site
	 */
	function newDataObject() {
		return new Site();
	}

/**
	 * @copydoc SchemaDAO::_fromRow()
	 */
	function _fromRow($primaryRow, $callHook = true) {
		$schemaService = Services::get('schema');
		$schema = $schemaService->get(SCHEMA_SITE);

$site = $this->newDataObject();

foreach ($this->primaryTableColumns as $propName => $column) {
			if (isset($primaryRow[$column])) {
				// Backwards-compatible handling of the installedLocales and
				// supportedLocales data. Before 3.2, these were stored as colon-separated
				// strings (eg - en_US:fr_CA:ar_IQ). In 3.2, these are migrated to
				// serialized arrays defined by the site.json schema. However, some of the
				// older upgrade scripts use site data before the migration is performed,
				// so SiteDAO must be able to return the correct array before the data
				// is migrated. This code checks the format and converts the old data so
				// that calls to $site->getInstalledLocales() and
				// $site->getSupportedLocales() return an appropriate array.
				if (in_array($column, ['installed_locales', 'supported_locales']) &&
						!is_null($primaryRow[$column]) && strpos($primaryRow[$column], '{') === false && is_null(json_decode($primaryRow[$column]))) {
					$site->setData($propName, explode(':', $primaryRow[$column]));
				} else {
					$site->setData(
						$propName,
						$this->convertFromDb($primaryRow[$column], $schema->properties->{$propName}->type)
					);
				}
			}
		}

$result = $this->retrieve("SELECT * FROM site_settings");

foreach ($result as $settingRow) {
			$settingRow = (array) $settingRow;
			if (!empty($schema->properties->{$settingRow['setting_name']})) {
				$site->setData(
					$settingRow['setting_name'],
					$this->convertFromDB(
						$settingRow['setting_value'],
						$schema->properties->{$settingRow['setting_name']}->type
					),
					empty($settingRow['locale']) ? null : $settingRow['locale']
				);
			}
		}

return $site;
	}

/**
	 * Insert site information.
	 * @param $site Site
	 */
	function insertSite(&$site) {
		$type = 'array';
		$returner = $this->update(
			'INSERT INTO site
				(redirect, min_password_length, primary_locale, installed_locales, supported_locales)
				VALUES
				(?, ?, ?, ?, ?)',
			array(
				$site->getRedirect(),
				(int) $site->getMinPasswordLength(),
				$site->getPrimaryLocale(),
				$this->convertToDB($site->getInstalledLocales(), $type),
				$this->convertToDB($site->getInstalledLocales(), $type),
			)
		);
		return $returner;
	}

/**
	 * @copydoc SchemaDAO::updateObject
	 */
	public function updateObject($site) {
		$schemaService = Services::get('schema');
		$schema = $schemaService->get(SCHEMA_SITE);
		$sanitizedProps = $schemaService->sanitize(SCHEMA_SITE, $site->_data);

$set = $params = [];
		foreach ($this->primaryTableColumns as $propName => $column) {
			$set[] = $column . ' = ?';
			$params[] = $this->convertToDb($sanitizedProps[$propName], $schema->properties->{$propName}->type);
		}
		$this->update("UPDATE site SET " . join(',', $set), $params);

$deleteSettings = [];
		$keyColumns = ['locale', 'setting_name'];
		foreach ($schema->properties as $propName => $propSchema) {
			if (array_key_exists($propName, $this->primaryTableColumns)) {
				continue;
			} elseif (!isset($sanitizedProps[$propName])) {
				$deleteSettings[] = $propName;
				continue;
			}
			if (!empty($propSchema->multilingual)) {
				foreach ($sanitizedProps[$propName] as $localeKey => $localeValue) {
					// Delete rows with a null value
					if (is_null($localeValue)) {
						$this->update("DELETE FROM site_settings WHERE setting_name = ? AND locale = ?",[
							$propName,
							$localeKey,
						]);
					} else {
						$updateArray = [
							'locale' => $localeKey,
							'setting_name' => $propName,
							'setting_value' => $this->convertToDB($localeValue, $schema->properties->{$propName}->type),
						];
						$result = $this->replace('site_settings', $updateArray, $keyColumns);
					}
				}
			} else {
				$updateArray = [
					'locale' => '',
					'setting_name' => $propName,
					'setting_value' => $this->convertToDB($sanitizedProps[$propName], $schema->properties->{$propName}->type),
				];
				$this->replace('site_settings', $updateArray, $keyColumns);
			}
		}

if (count($deleteSettings)) {
			$deleteSettingNames = join(',', array_map(function($settingName) {
				return "'$settingName'";
			}, $deleteSettings));
			$this->update("DELETE FROM site_settings WHERE setting_name in ($deleteSettingNames)");
		}
	}
}