<?php
/**
 * @class IntegratePKP
 *
 * Integrates PKP applications with the jbimages image upload utility for TinyMCE
 */


class IntegratePKP {
	/* @var $baseDir string Path to the base OxS directory */
	var $baseDir;

	/* @var $baseUrl string URL to the public uploads directory */
	var $baseUrl;

	/* @var imageDir String path to the user's image upload directory */
	var $imageDir;

	public function __construct() {
		// Get paths to system base directories
		$this->baseDir = $_SERVER['SCRIPT_FILENAME'];
		for ($i = 0; $i < 7; $i++) $this->baseDir = dirname($this->baseDir);

		// Load and execute initialization code
		chdir($this->baseDir);
		define('INDEX_FILE_LOCATION', $this->baseDir . '/index.php');
		require($this->baseDir . '/lib/pkp/includes/bootstrap.inc.php');

		$publicDir = Config::getVar('files', 'public_files_dir');
		$config = Config::getData();
		// Get all possible base_urls, compare these against the web request.  Use the best match to assign the base_url
		$baseUrls = array();
		foreach ($config['general'] as $k => $v) {
			if (substr($k, 0, 8) == 'base_url') {
				// Rank the URLs based on length for best match (higher is better)
				$ranking = strlen($v);
				$key = substr($k, 9, strlen($k) - 10);
				if (!$key) {
					$key = '';
				}
				// index URL is ranked as 0
				if ($key == 'index') {
					$ranking = 0;
				}
				// unqualified base_url is ranked as -1
				if ($key == '') {
					$ranking = -1;
				}
				$baseUrls[$v] = sprintf('%08d', $ranking).$key;
			}
		}
		// Higher is better
		arsort($baseUrls);
		// Default to the base url
		$this->baseUrl = Config::getVar('general', 'base_url');
		// Override with the best match
		foreach ($baseUrls as $k => $v) {
			if (stripos($_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'], preg_replace('#^https?://#i', '', $k)) !== false) {
				$this->baseUrl = $k;
				break;
			}
		}

		// Skip locale detection
		define('SESSION_DISABLE_INIT', 1);

		// Register locale files in the registry
		$locale = LOCALE_DEFAULT;
		$localeFile = new LocaleFile(
			$locale,
			$this->baseDir . "/lib/pkp/locale/$locale/installer.xml"
		);
		Registry::get('localeFiles', true, array($locale => array($localeFile)));

		// Load user variables
		// Set the correct default cookie path to be the same as OJS core
		// in order to get the correct session and thus user from the session
		$configData =& Config::getData();
		$cookiePathSet = false;
		if (!array_key_exists('session_cookie_path', $configData['general'])) {
			// Get paths to system base directories
			$baseCookiePath = $_SERVER['SCRIPT_NAME'];
			for ($i = 0; $i < 7; $i++) $baseCookiePath = dirname($baseCookiePath);
			if ($baseCookiePath == '/' || $baseCookiePath == '\\') {
				$baseCookiePath = '';
			}
			$configData['general']['session_cookie_path'] = $baseCookiePath . '/';
			$cookiePathSet = true;
		}
		$sessionManager = SessionManager::getManager();
		$userSession = $sessionManager->getUserSession();
		$user = $userSession->getUser();

		if (isset($user)) {
			// User is logged in
			$siteDir = $this->baseDir . '/' . $publicDir . '/site/';
			if (!file_exists($siteDir . '/images/')) {
				import('lib.pkp.classes.file.FileManager');
				$fileManager = new FileManager();

				// Check that the public/site/ directory exists and is writeable
				if(!file_exists($siteDir) || !is_writeable($siteDir)) {
					die(__('installer.installFilesDirError'));
				}
				// Create the images directory
				if (!$fileManager->mkdir($siteDir . '/images/')) {
					die(__('installer.installFilesDirError'));
				}
			}
			//Check if user's image directory exists, else create it
			if (Validation::isLoggedIn() && !file_exists($siteDir . '/images/' . $user->getUsername())) {
				import('lib.pkp.classes.file.FileManager');
				$fileManager = new FileManager();

				// Check that the public/site/images/ directory exists and is writeable
				if(!file_exists($siteDir . '/images/') || !is_writeable($siteDir . '/images/')) {
					die(__('installer.installFilesDirError'));
				}
				// Create the directory to store the user's images
				if (!$fileManager->mkdir($siteDir . '/images/' . $user->getUsername())) {
					die(__('installer.installFilesDirError'));
				}
				$this->imageDir = $publicDir . '/site/images/' . $user->getUsername();

			} else if (Validation::isLoggedIn()) {
				// User's image directory already exists
				$this->imageDir = $publicDir . '/site/images/' . $user->getUsername();
			}
		} else {
			// Not logged in; Do not allow images to be uploaded
			$this->imageDir = null;
		}

		if ($cookiePathSet) {
			unset($configData['general']['session_cookie_path']);
		}
		// Set the base directory back to its original location
		chdir(dirname($_SERVER['SCRIPT_FILENAME']));
	}

	/**
	 * Get the absolute path to the user's image upload directory
	 * @return string
	 */
	public function getPKPImageUploadPath() {
		if (isset($this->baseDir) && isset($this->imageDir)) {
			return $this->baseDir . '/' . $this->imageDir;
		}

		die(__('installer.installFilesDirError'));
	}

	/**
	 * Get the URL (minus domain name) for the user's image upload directory
	 * @return string
	 */
	public function getPKPImageUrl() {
		if (isset($this->baseUrl) && isset($this->imageDir)) {
			$url = $this->baseUrl . '/' . $this->imageDir;
			$urlParts = parse_url($url);
			return $urlParts['path'];
		}

		die(__('installer.installFilesDirError'));
	}
}
?>