<?php
/* The script pre_activate.php should contain code that should make the changes in the server
 * environment so that the application is fully functional. For example, this may include
 * changing symbolic links to "data" directories from previous to current versions,
 * upgrading an existing DB schema, or setting up a "Down for Maintenance"
 * message on the live version of the application
 * The following environment variables are accessable to the script:
 * 
 * - ZS_RUN_ONCE_NODE - a Boolean flag stating whether the current node is
 *   flagged to handle "Run Once" actions. In a cluster, this flag will only be set when
 *   the script is executed on once cluster member, which will allow users to write
 *   code that is only executed once per cluster for all different hook scripts. One example
 *   for such code is setting up the database schema or modifying it. In a
 *   single-server setup, this flag will always be set.
 * - ZS_WEBSERVER_TYPE - will contain a code representing the web server type
 *   ("IIS" or "APACHE")
 * - ZS_WEBSERVER_VERSION - will contain the web server version
 * - ZS_WEBSERVER_UID - will contain the web server user id
 * - ZS_WEBSERVER_GID - will contain the web server user group id
 * - ZS_PHP_VERSION - will contain the PHP version Zend Server uses
 * - ZS_APPLICATION_BASE_DIR - will contain the directory to which the deployed
 *   application is staged.
 * - ZS_CURRENT_APP_VERSION - will contain the version number of the application
 *   being installed, as it is specified in the package descriptor file
 * - ZS_PREVIOUS_APP_VERSION - will contain the previous version of the application
 *   being updated, if any. If this is a new installation, this variable will be
 *   empty. This is useful to detect update scenarios and handle upgrades / downgrades
 *   in hook scripts
 * - ZS_<PARAMNAME> - will contain value of parameter defined in deployment.xml, as specified by
 *   user during deployment.
 */  
//who executes the script

// Rename and symlink direcories to shared folders
//recursive copy function
function recursive_copy($source, $dest) {
	foreach (
		$iterator = new RecursiveIteratorIterator(
				new RecursiveDirectoryIterator($source, RecursiveDirectoryIterator::SKIP_DOTS), RecursiveIteratorIterator::SELF_FIRST) as $item
		) 
	{
		if ($item->isDir()) {
			if(!is_dir($dest . DIRECTORY_SEPARATOR . $iterator->getSubPathName())) {
				echo "Creating dir: ".$dest . DIRECTORY_SEPARATOR . $iterator->getSubPathName()."\n";
				mkdir($dest . DIRECTORY_SEPARATOR . $iterator->getSubPathName());
			}
		} else {
			if(!is_file($dest . DIRECTORY_SEPARATOR . $iterator->getSubPathName())) {
				echo "Copying file: ".$dest . DIRECTORY_SEPARATOR . $iterator->getSubPathName()."\n";
				copy($item, $dest . DIRECTORY_SEPARATOR . $iterator->getSubPathName());
			}
		}
	}
}

function share_folders($baseDir, $sharedFolder, $fromDir) {
	//rename the dir to dir.bak
	$srcDir = rtrim(realpath($baseDir.'/'.$fromDir), '/');
	echo "BaseDir: $baseDir\n";
	echo "FromDir: $fromDir\n";
	echo "realpath src: $srcDir\n";
	
	$origDir = $baseDir.'/'.$fromDir;
	$bakDir = "$srcDir.bak-".date('ddmmyyHis');
	
	//ensure target exists in shared
	$targetDir = $sharedFolder.'/'.$fromDir;
	if(!is_dir($targetDir)) {
		echo "Creating dir: $targetDir\n";
		if(!mkdir($targetDir, 0755, true)) {
			echo "Failed creating target dir $targetDir\n";
		}
	}
	
	//copy all resources 
	recursive_copy($srcDir, $targetDir);
	
	//Symlink
	if(is_link($origDir)){
		echo "Unlinking existing link: $origDir\n";
		unlink($origDir);
	} elseif(is_dir($origDir)) {
			echo "Moving $origDir to $bakDir\n";
			rename($origDir, $bakDir);
	}
	
	echo "Symlinking $origDir to $targetDir\n";
	symlink($targetDir, $origDir);
}

$baseDir = getenv('ZS_APPLICATION_BASE_DIR');
$sharedBaseDir = getenv('ZS_SHARED_DIR');

share_folders($baseDir, $sharedBaseDir, 'public/frontend');
share_folders($baseDir, $sharedBaseDir, 'module/Development/views/layout');
share_folders($baseDir, $sharedBaseDir, 'module/Development/views/view');
share_folders($baseDir, $sharedBaseDir, 'module/Development/views/script');
share_folders($baseDir, $sharedBaseDir, 'public/media');

echo "Done sharing folders.\n";

exit(0);