<?php
require_once("../../../classes/ADLog.class.php");
require_once("../../../classes/updater.class.php");
require_once("../../../config/config.inc.php");
require_once("../../../config/functions.inc.php");

/* Updater Steps 
 * 1. get latest version from rconfig.com
 * 2. set or correct owner permissions to all /home/rconfig/ to apache account
 * 3. Assume correct version file uploaded and extract zip file completely to /home/rconfig/tmp/update-x.x.x/
 * 4. backup /home/rconfig/config/config.inc.php to updater files directory
 * 5. change version in config.inc.php to $latestVer
 * 6. Copy all from tmp update folder to prod rconfig folder
 * 7. Check installed version on config.inc.php 
 * 8. check for sql file in update tmp folder
 * 9. execute sql chnages if file is present
 * 8. delete all tmp update files/folders using Linux rm command * 
 * 
 * */

 // initiate classes
$log = ADLog::getInstance();
$update = new updater();

//Setting the timeout properly without messing with ini values: 
$ctx = stream_context_create(array('http' => array('timeout' => 5)));
// here we assume we can already connect to net as ../www/updater.php will nto allow us to proceed to this point i.e. no error check
$latestVer = file_get_contents("http://www.rconfig.com/downloads/version.txt", 0, $ctx);
$updateFileName = 'rconfig-'.$latestVer.'.zip';

$updateFile = $config_temp_dir . $updateFileName;
//extracted files path
$extractDir = '/home/rconfig/tmp/update-'.$latestVer;

// set json array for ultimate response to updater.php
$response = array();

// set chwon apache on /home/rconfig/ in case any are misconfigured
shell_exec('chown -R apache '.$config_app_basedir);

// check if update file exists
if($update->checkForUpdateFile($updateFile)){

	if($update->extractUpdate($updateFile, $extractDir)){
		$response['zip'] = 'ZIP file successfully extracted';
		$log->Info("ZIP successfully extracted - ". $updateFile." (File: " . $_SERVER['PHP_SELF'] . ")");
	} else {
		$response['zip'] = 'Could not extract ZIP - '. $updateFile;
		$log->Warn("Could not extract ZIP - ". $updateFile." (File: " . $_SERVER['PHP_SELF'] . ")");
	}	

	// backup /home/rconfig/config/config.inc.php to update Dir
	$sourceConfigFile = '/home/rconfig/config/config.inc.php';
	$destinationConfigFile = '/home/rconfig/tmp/update-'.$latestVer.'/rconfig/config/config.inc.php';
		
	if($update->backupConfigFile($sourceConfigFile, $destinationConfigFile)){
		$response['configFileBackup'] = 'rConfig Configuration file backed up successfully';
		$log->Info("Copied file ".$sourceConfigFile."... (File: " . $_SERVER['PHP_SELF'] . ")");
	} else {
		$response['configFileBackup'] = 'failed to copy '.$sourceConfigFile;
		$log->Warn("failed to copy ".$sourceConfigFile."...  (File: " . $_SERVER['PHP_SELF'] . ")");
	}

	//update copied config file with new version info
	$update->updateConfigVersionInfo($latestVer, $destinationConfigFile);

	
	// Copy App folders only	
	$folderstoCopy = array('classes', 'config', 'lib', 'www');

	$update->copyAppDirsToProd($latestVer, $folderstoCopy);

	// check version updated correctly
	if($config_version == $latestVer){
		$response['configFileVersionUpdate'] = 'rConfig application files updated';
		$log->Info("rConfig files updated - (File: " . $_SERVER['PHP_SELF'] . ")");
	}
	
	// check for and install sql file
	$sqlUpdateFile = $extractDir.'/rconfig/updates/sqlupdate.sql';
	if($update->checkForUpdateFile($sqlUpdateFile) && filesize($sqlUpdateFile) !== 0){
		if($update->loadSqlFile($sqlUpdateFile, DB_HOST, DB_USER, DB_PASSWORD, DB_NAME)){
			$response['sqlUpdateComplete'] = 'rConfig Database was updated';
			$log->Info("Database was updated - (File: " . $_SERVER['PHP_SELF'] . ")");
		}
	}
	
	// Delete all /home/rconfig/tmp/ data
	exec('rm -fr /home/rconfig/tmp/*.*');
	if ($update->dirIsEmpty('/home/rconfig/tmp/')) {
		$response['tmpFolderEmpty'] = 'rConfig update files removed';
		$log->Info("rConfig update files removed - (File: " . $_SERVER['PHP_SELF'] . ")");
		}else{
		$response['tmpFolderEmpty'] = 'Could not remove rConfig update files';
		$log->Info("Could not remove rConfig update files - (File: " . $_SERVER['PHP_SELF'] . ")");;
	}

	// remove rconfig/www/install directory as should already be remove for upgrade
	$installDir = '/home/rconfig/www/install/';
	if(is_dir($installDir)){
		rrmdir($installDir);
		sleep(1); // pause while deleting
		
		if(!file_exists($installDir)){ // check if install  does not dir exist after delete and return success
			$log->Info($installDir." dir removed - ". $updateFile." (File: " . $_SERVER['PHP_SELF'] . ")");
			
		} else if (file_exists($installDir)) { // else return failure as dir still exists
			$response['zip'] = 'Could remove installation directory - '. $updateFile;
			$log->Warn("Could remove installation directory - ". $updateFile." (File: " . $_SERVER['PHP_SELF'] . ")");
			
		}
	} else if (!is_dir($installDir)) { // first if - return success as dir does not exist
		$log->Info($installDir." dir removed - ". $updateFile." (File: " . $_SERVER['PHP_SELF'] . ")");
	}
	
	echo json_encode($response);

} else {
	// could not find update file in tmp dir
	$response['noUpdateFile'] = 'Could not find update File';
	$log->Fatal("Could not find update File (File: " . $_SERVER['PHP_SELF'] . ")");
	echo json_encode($response);
}

?>