<?php

class Log {

	public static $log_dir = "LOGS";

	public static function ReadLogs($duration = '') {
		$jobs = Scheduler::ReadJobs();
		
		$all_jobs = array(Scheduler::$backup_dir.Scheduler::$manual_dir,Scheduler::$localbackup_dir.Scheduler::$manual_dir,Scheduler::$restore_dir.Scheduler::$manual_dir,Scheduler::$localrestore_dir.Scheduler::$manual_dir,Scheduler::$archiveclean_dir.Scheduler::$manual_dir,Scheduler::$restore_dir.Scheduler::$trash_manual_dir, Scheduler::$delete_dir);
		foreach($jobs as $k=>$job) {
			$jobName = substr($k,(strlen($job["job_type"])+1));
			$all_jobs[] = Scheduler::$user_dir.$job["job_type"]."/".$jobName;
			$archiveDir = Scheduler::$user_dir.Scheduler::$archive."/".$jobName;
			if($job["job_type"] == BACKUPDIR && file_exists($archiveDir)){
				$all_jobs[] = $archiveDir;
			}
		}
		$log_files = self::ReadLogFiles(true, $all_jobs, $duration);
		return $log_files;		
	}
	public static function ReadAllPid() {
		$jobs = Scheduler::ReadJobs();
		$all_jobs = array(Scheduler::$backup_dir.Scheduler::$manual_dir,Scheduler::$localbackup_dir.Scheduler::$manual_dir,Scheduler::$restore_dir.Scheduler::$manual_dir,Scheduler::$localrestore_dir.Scheduler::$manual_dir,Scheduler::$archiveclean_dir.Scheduler::$manual_dir);
		foreach($jobs as $k=>$job) {
			$jobName = substr($k,(strlen($job["job_type"])+1));
			$all_jobs[] = Scheduler::$user_dir.$job["job_type"]."/".$jobName;
			$archiveDir = Scheduler::$user_dir.Scheduler::$archive."/".$jobName;
			if($job["job_type"] == BACKUPDIR && file_exists($archiveDir)){
				$all_jobs[] = $archiveDir;
			}
		}
		$watcher = array();
		foreach($all_jobs as $job) {
			$pidtxt = $job."/".LOG_PID_FILE;
			if(file_exists($pidtxt)) {
				$log_file_full = file_get_contents($pidtxt);
							
				if($log_file_full != "") {
					$log_file_full_arr = explode("/", $log_file_full);
					$log_details = explode("_", $log_file_full_arr[count($log_file_full_arr) - 1]);
					$full_path = trim($job."/".self::$log_dir."/".$log_details[0]);
					$job_details = explode("/", $job);
					$log_details_arr = explode(" ", $log_details[0]);
					$datetime = $log_details_arr[0]." ".$log_details_arr[1];
					$job_name = $job_details[count($job_details) - 1];
					$job_type = $job_details[count($job_details) - 2];
					$meridian = trim($log_details_arr[2]);
					$datetime .= " $meridian";
					if(count($log_details) > 1) {
						@unlink($pidtxt);					
						$status = trim($log_details[1]);						
					}else {
						$status = "In Progress";						
					}
					if (file_exists($log_file_full)){
						$watcher[$full_path] = array("datetime"=>$datetime, "timestamp"=>strtotime($datetime), "job_name"=>$job_name, "job_type"=>$job_type, "status"=>$status);
					}
				}
			}
		}
		return $watcher;

	}
	public static function WatchLogs() {
		$watcher = self::ReadAllPid();
		return array("watcher"=>$watcher);
	}
	
	/*********************************************************************************************************
	* Function Name       	: getDateRange
	* Objective             : This function will return time stamp for the passed duration
	* Added By              : Sabin Cheruvattil | 2016-06-07
	**********************************************************************************************************/
	protected static function getDateRange($duration = '')
	{
		$date_range = array();
		
		switch($duration) {
			case 'all':
				$date_range['start']	= '';
				$date_range['end']		= '';
				break;
			case '1month':
				$date_range['start']	= mktime(0, 0, 0, date('n') - 1);
				$date_range['end']		= mktime(23, 59, 59);
				break;
			case '2week':
				$date_range['start']	= mktime(0, 0, 0, date('n'), date('j') - 14);
				$date_range['end']		= mktime(23, 59, 59);
				break;
			case '1week':
			default:
				$date_range['start']	= mktime(0, 0, 0, date('n'), date('j') - 7);
				$date_range['end']		= mktime(23, 59, 59);
				break;
			
		}
		return $date_range;
	}
	
	/*********************************************************************************************************
	* Function Name 		: ReadLogFiles
	* Objective				: This function will provide the set of log files
	* Modified By			: Sabin Cheruvattil | 2016-06-07
	**********************************************************************************************************/
	public static function ReadLogFiles($array = true, $all_jobs, $duration = '') {
		if($array) {
			$log_array = array();
			
			$date_range = Log::getDateRange($duration);
			
			foreach($all_jobs as $job) {
				$log_dir = $job."/".self::$log_dir;
				if(is_dir($log_dir)){
					if($dh = opendir($log_dir)) {
						while(($file = readdir($dh)) !== false) {
							if(($file === ".") || ($file === "..") || (strpos($file, "_ERRORFILE") !== FALSE) || ($file === "PROGRESS_DETAILS") || ($file === "LOG_DETAILS") || (strpos($file, ".pid") !== FALSE)) {
								continue;
							} else {
								$log_details					= explode("_", $file);
								$key							= $log_dir . "/" . $log_details[0];
								$log_details_arr 				= explode(" ", $log_details[0]);
								
								$type							= '';
								$datetime						= '';
								if(count($log_details_arr) > 3) {
									$datetime					= str_replace('-', '/', $log_details_arr[0]) . " " . $log_details_arr[1] . ' ' . $log_details_arr[2];
									$type						= $log_details_arr[3];
								} else {
									$datetime					= str_replace('-', '/', $log_details_arr[0])." ".$log_details_arr[1];
									$type						= $log_details_arr[2];
								}
								
								$timestamp						= strtotime($datetime);
								
								if(($date_range['start'] != '' && $date_range['start'] > $timestamp) || ($date_range['end'] != '' && $date_range['end'] < $timestamp)) {
									continue;
								}
								
								$log_array[$key] 				= array();
								$job_details 					= explode("/", $job);
								$log_array[$key]["job_name"] 	= $job_details[count($job_details) - 1];
								$log_array[$key]["job_type"] 	= $job_details[count($job_details) - 2];
								if($log_array[$key]["job_type"] == 'Delete')
									$log_array[$key]["job_type"] = ucfirst(strtolower($type));
								$log_array[$key]["type"] 		= $type;
								$log_array[$key]["datetime"] 	= $datetime;
								$log_array[$key]["timestamp"] 	= $timestamp;
								
								if(count($log_details) > 1) {
									$log_array[$key]["status"] 	= $log_details[1];
								} else {
									$log_array[$key]["status"]	= "In Progress";
									
									# added by anil for log related issues on  16/11/2018
									$log_array[$key]["status"] = self::checkAndRenameFileWithStatus($job, $key);
								}
							}
						}	
						
						closedir($dh);
					}
				}
			}

			return array("logs" => $log_array, "count" => count($log_array));
		}
	}
	
	/****************************************************************************************************
	* Function Name         : checkAndRenameFileWithStatus
	* Objective             : This is to update status for log which is in progress with out running process.
	* Added By              : Anil Kumar
	******************************************************************************************************/
	public static function checkAndRenameFileWithStatus($jobDir, $key)
	{  
		$pidFile = $jobDir."/".PID_FILE;
		$logpidFile =  $jobDir."/".LOG_PID_FILE;
		$startPid =  $jobDir."/".START_PID;
		$statusToUpdate = "In Progress";
		if((!file_exists($pidFile)) && (file_exists($logpidFile)) && (!file_exists($startPid)) ) {
			$handle = fopen($logpidFile,'r+');
			if(flock($handle, LOCK_EX|LOCK_NB))
			{
				flock($handle,LOCK_UN);
				$buffer = fread($handle, LIMIT);
				fclose($handle);
				
				$statusToUpdate = "ABORTED";
				# need to check and update status
				$considered = $success = $synced = $failed = $status = $logFile = "";
				$isSummary = 0;
				
				$cmd = "tail -10 \"$key\"";
				$logData = `$cmd`;
				$res1 =  explode("\n", $logData);
				foreach($res1 as $line){
					if(trim($line)!=''){
						if (!$isSummary && (strpos($line, 'Summary:') !== false)) {
							$isSummary = 1;
						}
						elseif($isSummary && (strpos($line, 'considered') !== false)){
							$data =  explode(":", $line);
							$considered = $data[1];
							trim($considered);
						} elseif($isSummary && ((strpos($line, 'backed') !== false) || (strpos($line, 'restored'!== false)))){
							$data =  explode(":", $line);
							$success = $data[1];
							trim($success);
						} elseif($isSummary && (strpos($line, 'already present') !== false)){ 
							$data =  explode(":", $line);
							$synced = $data[1];
							trim($synced);
						} elseif($isSummary && (strpos($line, 'failed') !== false)){ 
							$data =  explode(":", $line);
							$failed = $data[1];
							trim($failed);
						}
							
					}
				}
				
				if($isSummary){
					if($failed > 0 || $considered == 0){
						$statusToUpdate = "FAILURE";
					} elseif($considered == ($success+$synced)){
						$statusToUpdate = "SUCCESS";
					}
				}
					
				# need to change the status.
				$newName = "$key"."_".$statusToUpdate;
				$resCmd = "mv \"$key\" \"$newName\"";
				$res = `$resCmd`;
				
			}
			
		}
		return $statusToUpdate;
	}
}
?>