<?php

// h-source, a web software to build a community of people that want to share their hardware information.
// Copyright (C) 2010  Antonio Gallo (h-source-copyright.txt)
//
// This file is part of h-source
//
// h-source is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// 
// h-source is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
// 
// You should have received a copy of the GNU General Public License
// along with h-source.  If not, see <http://www.gnu.org/licenses/>.

if (!defined('EG')) die('Direct access not allowed!');

function encodeUrl($url)
{
	$url = str_replace(' ','-',$url);
	$url = str_replace('.','-',$url);
	$url = str_replace('[','-',$url);
	$url = str_replace(']','-',$url);
	$url = str_replace('(','-',$url);
	$url = str_replace(')','-',$url);
	$url = str_replace('/','-',$url);
	$url = str_replace('@','-at-',$url);
	$url = str_replace('?','-',$url);
	
// 	$temp = null;
// 	for ($i=0;$i<strlen($url); $i++)
// 	{
// 		if (strcmp($url[$i],' ') === 0)
// 		{
// 			$temp .= '-';
// 		}
// 		else
// 		{
// 			if (preg_match('/^[a-zA-Z0-9\-]$/',$url[$i])) $temp .= $url[$i];
// 		}
// 	}

// 	$url = urlencode($url);
// 	$url = urlencode($url);
	return $url;
}

function titleForRedirect($title)
{
	return html_entity_decode(encodeUrl($title),ENT_QUOTES,DEFAULT_CHARSET);
}

// function encodeUrl($url)
// {
// 	$url = str_replace(' ','-',$url);
// 	$url = str_replace('[','-',$url);
// 	$url = str_replace(']','-',$url);
// 	$url = str_replace('(','-',$url);
// 	$url = str_replace(')','-',$url);
// 	$url = str_replace('/','-',$url);
// 	$url = str_replace('@','-at-',$url);
// 	$url = urlencode($url);
// // 	$url = html_entity_decode($url, ENT_QUOTES);
// // 	$url = xml_encode($url);
// 	return $url;
// }


function smartDate($uglyDate = null, $lang = 'en')
{
	switch ($lang)
	{
		case 'en':
			$smDate =  date('H:i, d F Y',strtotime($uglyDate));
			break;
		default:
			$smDate = date('H:i, d F Y',strtotime($uglyDate));
	}
	return $smDate;
}

function sanitizeString($string)
{
	$string = preg_match('/^[a-zA-Z0-9\-\_\.\+\s]+$/',$string) ? sanitizeAll($string) : 'undef';
	return $string;
}

function sanitizeAlphanum($string)
{
	$string = ctype_alnum($string) ? sanitizeAll($string) : 'undef';
	return $string;
}

function sanitizePciid($string)
{
	$string = preg_match('/^[a-zA-Z0-9]{4}(\:)[a-zA-Z0-9]{4}$/',$string) ? sanitizeAll($string) : '0';
	return $string;
}

function getOrderByClause($string)
{
	switch ($string)
	{
		case 'last-inserted':
			$orderBy = 'hardware.id_hard desc';
			break;
		case 'alphabetically':
			$orderBy = 'model';
			break;
		case 'alphabetically-desc':
			$orderBy = 'model desc';
			break;
		case 'compatibility':
			$orderBy = 'compatibility';
			break;
		case 'undef':
			$orderBy = 'hardware.id_hard desc';
			break;
		default:
			$orderBy = 'hardware.id_hard desc';
	}
	
	return $orderBy;
}


function diff($old, $new){
	$maxlen = 0;
	foreach($old as $oindex => $ovalue){
// 				$nkeys = getNewKeys($new,$ovalue);
			$nkeys = array_keys($new, $ovalue);
			foreach($nkeys as $nindex){
					$matrix[$oindex][$nindex] = isset($matrix[$oindex - 1][$nindex - 1]) ?
							$matrix[$oindex - 1][$nindex - 1] + 1 : 1;
					if($matrix[$oindex][$nindex] > $maxlen){
							$maxlen = $matrix[$oindex][$nindex];
							$omax = $oindex + 1 - $maxlen;
							$nmax = $nindex + 1 - $maxlen;
					}
			}
	}
	if($maxlen == 0) return array(array('d'=>$old, 'i'=>$new));
	return array_merge(
			diff(array_slice($old, 0, $omax), array_slice($new, 0, $nmax)),
			array_slice($new, $nmax, $maxlen),
			diff(array_slice($old, $omax + $maxlen), array_slice($new, $nmax + $maxlen)));
}

function htmlDiff($old, $new){
	$old = str_replace("\r\n"," \r\n ",$old);
	$new = str_replace("\r\n"," \r\n ",$new);

	$ret = null;
	$diff = diff(explode(' ', $old), explode(' ', $new));
	foreach($diff as $k){
			if(is_array($k))
					$ret .= (!empty($k['d'])?"<del>".implode(' ',$k['d'])."</del> ":'').
							(!empty($k['i'])?"<ins>".implode(' ',$k['i'])."</ins> ":'');
			else $ret .= $k . ' ';
	}
	return $ret;
}


//a cosa serve?
function applyBreaks($values,$fields)
{
	$fieldsArray = explode(',',$fields);
	
	foreach ($fieldsArray as $field)
	{
		if (array_key_exists($field,$values))
		{
			$values[$field] = nl2br($values[$field]);
		}
	}
	return $values;
}


function getLinkToUser($user)
{
	if (strstr($user,'__'))
	{
		return str_replace('__',null,$user);
	}
	else
	{
		return "<a href='http://".DOMAIN_NAME."/meet/user/".Lang::$current."/$user'>$user</a>";
	}
}


//decode the text of the wiki
function decodeWikiText($string)
{
	
	$string = preg_replace('/(\[hr\])/', '<hr />',$string);

	$string = preg_replace_callback('/(\[\[)(.*?)\|(.*?)(\]\])/', 'linkToInternalPageWithText' ,$string);

	$string = preg_replace_callback('/(\[\[)(.*?)(\]\])/', 'linkToInternalPage' ,$string);
	
	$string = preg_replace_callback('/(\[a\])(.*?)(\[\/a\])/', 'linkTo',$string);

	$string = preg_replace_callback('/(\[a\])(.*?)\|(.*?)(\[\/a\])/', 'linkToWithText',$string);

	$string = preg_replace_callback('/(\[notebook\])([0-9]*?)(\[\/notebook\])/s', 'linkToNotebook',$string);
	
	$string = preg_replace_callback('/(\[wifi\])([0-9]*?)(\[\/wifi\])/s', 'linkToWifi',$string);
	
	$string = preg_replace_callback('/(\[videocard\])([0-9]*?)(\[\/videocard\])/s', 'linkToVideocard',$string);
	
	$string = preg_replace('/(\[b\])(.*?)(\[\/b\])/s', '<b>${2}</b>',$string);
	
	$string = preg_replace('/(\[u\])(.*?)(\[\/u\])/s', '<u>${2}</u>',$string);
	
	$string = preg_replace('/(\[i\])(.*?)(\[\/i\])/s', '<i>${2}</i>',$string);
	
	$string = preg_replace('/(\[del\])(.*?)(\[\/del\])/s', '<del>${2}</del>',$string);
	
	$string = preg_replace('/(\[\*\])(.*?)(\[\/\*\])/s', '<li>${2}</li>',$string);
	
	$string = preg_replace('/(\[list\])(.*?)(\[\/list\])/s', '<ul>${2}</ul>',$string);
	
	$string = preg_replace('/(\[enum\])(.*?)(\[\/enum\])/s', '<ol>${2}</ol>',$string);
 	
	$string = preg_replace('/(\[code\])(.*?)(\[\/code\])/s', '<pre class="code_pre">${2}</pre>',$string);
	
	$string = preg_replace('/(\[p\])(.*?)(\[\/p\])/s', '<p>${2}</p>',$string);
	
	$string = preg_replace('/(\[h1\])(.*?)(\[\/h1\])/s', '<div class="div_h1">${2}</div>',$string);
	
	$string = preg_replace('/(\[h2\])(.*?)(\[\/h2\])/s', '<div class="div_h2">${2}</div>',$string);
	
	$string = preg_replace('/(\[h3\])(.*?)(\[\/h3\])/s', '<div class="div_h3">${2}</div>',$string);

	$string = preg_replace('/(\[lang\])(.*?)(\[\/lang\])/s', '<div class="div_lang">${2}</div>',$string);
	
	return $string;
}

function checkUrl($url)
{
// 	$match = '/^http\:\/\/(www\.)?[a-zA-Z0-9\-\_]+(\.[a-zA-Z0-9\-\_]+)?\.(com|net|it|info|org|eu|uk)((\/[a-zA-Z0-9\_\-\+]+)+[\/]?)?(\?([a-zA-Z0-9\_\-\+\s]+\=[a-zA-Z0-9\_\-\s\+\&amp;]+)+)?(#[a-zA-Z0-9\_\-\+\s]+)?([\s]*)?$/';
	
	$match = '/^http\:\/\/(www\.)?[a-zA-Z0-9\-\_]+(\.[a-zA-Z0-9\-\_]+)?\.(com|net|it|info|org|eu|uk|ca)((\/[a-zA-Z0-9\_\-\+]+)*(\/([a-zA-Z0-9\_\-\.\+]+\.(php|html|htm|asp|aspx|jsp|cgi))?)?)?(\?([a-zA-Z0-9\_\-\+\s]+\=[a-zA-Z0-9\_\-\s\+\&amp;]+)+)?(#[a-zA-Z0-9\_\-\+\s]+)?([\s]*)?$/';
	
	if (preg_match($match,$url))
	{
		return true;
	}
	else
	{
		return false;
	}
}

function vitalizeUrl($string)
{
	if (checkUrl($string))
	{
		return "<a title = '".$string."' href='".$string."'>".$string."</a>";
	}
	return $string;
}

function linkTo($match)
{
	if (checkUrl($match[2]))
	{
		return "<a title = '".$match[2]."' href='".$match[2]."'>".$match[2]."</a>";
	}
	else
	{
		return $match[0];
	}
}

function linkToInternalPage($match)
{
	return "<a title = '".$match[2]."' href='http://".DOMAIN_NAME."/wiki/page/".Lang::$current."/".encodeUrl($match[2])."'>".$match[2]."</a>";
}

function linkToInternalPageWithText($match)
{
	return "<a title = '".$match[2]."' href='http://".DOMAIN_NAME."/wiki/page/".Lang::$current."/".encodeUrl($match[2])."'>".$match[3]."</a>";
}

function linkToWithText($match)
{
	if (checkUrl($match[2]))
	{
		
		return "<a title = '".$match[2]."' href='".$match[2]."'>".$match[3]."</a>";
	}
	else
	{
		return $match[0];
	}
}

//create the link to the wiki page of the notebook
function linkToNotebook($match)
{
	$hardware = new HardwareModel();
	$clean['id_hard'] = (int)$match[2];
	$name = encodeUrl($hardware->getTheModelName($clean['id_hard']));
	$href = "HTTP://".DOMAIN_NAME."/notebooks/view/".Lang::$current."/".$clean['id_hard']."/$name";
	return (strcmp($name,'') !== 0) ? "<a title = 'link to notebook $name:  $href' href='$href'>".$name."</a>" : $match[0];
}

//create the link to the wiki page of the wifi
function linkToWifi($match)
{
	$hardware = new HardwareModel();
	$clean['id_hard'] = (int)$match[2];
	$name = encodeUrl($hardware->getTheModelName($clean['id_hard']));
	$href = "HTTP://".DOMAIN_NAME."/wifi/view/".Lang::$current."/".$clean['id_hard']."/$name";
	return (strcmp($name,'') !== 0) ? "<a title = 'link to wifi card $name:  $href' href='$href'>".$name."</a>" : $match[0];
}

//create the link to the wiki page of the videocard
function linkToVideocard($match)
{
	$hardware = new HardwareModel();
	$clean['id_hard'] = (int)$match[2];
	$name = encodeUrl($hardware->getTheModelName($clean['id_hard']));
	$href = "HTTP://".DOMAIN_NAME."/videocards/view/".Lang::$current."/".$clean['id_hard']."/$name";
	return (strcmp($name,'') !== 0) ? "<a title = 'link to video card $name:  $href' href='$href'>".$name."</a>" : $match[0];
}

function getUserName($id_user = 0)
{
	$clean['id_user'] = (int)$id_user;
	$u = new UsersModel();
	return $u->getUser($clean['id_user']);
}

function getMotivation($row,$controller)
{
	if (strcmp($row['deletion']['object'],'duplication') === 0)
	{
		$clean['id_hard'] = (int)$row['deletion']['id_duplicate'];
		$hardware = new HardwareModel();
		$name = encodeUrl($hardware->getTheModelName($clean['id_hard']));
		return "<b>duplication</b> of the model having id <b><a href='http://".DOMAIN_NAME."/".$controller."/view/".Lang::$current."/".$clean['id_hard']."/".$name."'>".$clean['id_hard']."</a></b>";
	}
	else
	{
		return "<b>".$row['deletion']['object']."</b>";
	}
}

//get the text in the right language
function gtext($string)
{
	if (isset(Lang::$i18n[Lang::$current][$string]))
	{
		return Lang::$i18n[Lang::$current][$string];
	}
	return $string;
}

//rewrite the vendor name
function betterVendor($string)
{
	$names = array(
		"AT-T"	=>	"AT&T",
		"Franklin-Wireless-Corporation"	=>	"Franklin Wireless Corporation",
		"Novatel-Wireless"	=>	"Novatel Wireless",
		"Sierra-Wireless"	=>	"Sierra Wireless",
		"ALi-Corporation" => "ALi Corporation",
		"Advanced-Micro-Devices"	=>	"Advanced Micro Devices (AMD)",
		"Analog-Devices"	=>	"Analog Devices",
		"ATI-Technologies-Inc"	=>	"ATI Technologies Inc",
		"Aureal-Semiconductor"	=>	"Aureal Semiconductor",
		"Avance-Logic-Inc"	=>	"Avance Logic Inc (ALI)",
		"Aztech-System-Ltd"	=>	"Aztech System Ltd",
		"Brooktree-Corporation"	=>	"Brooktree Corporation",
		"C-Media-Electronics-Inc"	=>	"C-Media Electronics Inc",
		"Cirrus-Logic"	=>	"Cirrus Logic",
		"Creative-Labs"	=>	"Creative Labs",
		"Ensoniq"	=>	"Ensoniq",
		"ESS-Technology"	=>	"ESS Technology",
		"ForteMedia-Inc"	=>	"ForteMedia Inc",
		"Intel-Corporation"	=>	"Intel Corporation",
		"Motorola"	=>	"Motorola",
		"National-Semiconductor-Corporation"	=>	"National Semiconductor Corporation",
		"Neomagic-Corp"	=>	"Neomagic Corp",
		"nVidia-Corporation"	=>	"nVidia Corporation",
		"RME"	=>	"RME",
		"S3 Inc"	=>	"S3-Inc",
		"Silicon-Integrated-Systems"	=>	"Silicon Integrated Systems (SiS)",
		"Trident-Microsystems"	=>	"Trident Microsystems",
		"VIA-Technologies-Inc"	=>	"VIA Technologies Inc",
		"Xilinx-Corporation"	=>	"Xilinx Corporation",
		"Yamaha-Corporation"	=>	"Yamaha Corporation",
		"Aiptek-Inc"	=>	"Aiptek Inc",
		"Arkmicro-Technologies-Inc"	=>	"Arkmicro Technologies Inc",
		"Askey-Computer-Corporation"	=>	"Askey Computer Corporation",
		"Chicony-Electronics-CO"	=>	"Chicony Electronics CO",
		"Conexant-Systems-Inc"	=>	"Conexant Systems, Inc",
		"Creative-Technology-Ltd"	=>	"Creative Technology, Ltd",
		"eMPIA-Technology-Inc"	=>	"eMPIA Technology, Inc",
		"Genesys-Logic-Inc"	=>	"Genesys Logic, Inc",
		"Hama-Trading-Co"	=>	"Hama Trading Co",
		"Hewlett-Packard" 		=>	"Hewlett Packard",
		"IMC-Networks"	=>	"IMC Networks",
		"iPassion-Technology-Inc"	=>	"iPassion Technology Inc",
		"KYE-Systems-Corp"	=>	"KYE Systems Corp",
		"LG-Electronics"	=>	"LG Electronics",
		"OmniVision-Technologies-Inc"	=>	"OmniVision Technologies, Inc",
		"PixArt-Imaging-Inc"	=>	"PixArt Imaging Inc",
		"Primax-Electronics-Ltd"	=>	"Primax Electronics Ltd",
		"Quanta-Computer-Inc"	=>	"Quanta Computer Inc.",
		"Ricoh-Company-Ltd"	=>	"Ricoh Company, Ltd",
		"Sony-Corporation"	=>	"Sony Corporation",
		"Syntek-Semiconductor-Ltd"	=>	"Syntek Semiconductor Ltd",
		"Sunplus-Technology-Co"	=>	"Sunplus Technology Co",
		"Tekom-Technologies-Inc" =>	"Tekom Technologies, Inc",
		"Trust-International"	=>	"Trust International",
		"ViewQuest-Technologies-Inc"	=>	"ViewQuest Technologies, Inc",
		"Vista-Imaging-Inc"	=>	"Vista Imaging, Inc",
		"Z-Star-Microelectronics-Corporation"	=>	"Z-Star Microelectronics Corporation",
		"Micro-Star-International"	=>	"Micro Star International",
		"VIA-Technologies-Inc"	=>	"VIA Technologies, Inc",
		"ALFA-NETWORK-Inc"	=>	"ALFA NETWORK Inc",
		"Amigo-Technology-Inc"	=>	"Amigo Technology Inc",
		"amit-Inc"			=>	"amit Inc",
		"Atlantis_S-p-A"	=>	"Atlantis S.p.A.",
		"Buffalo-Technology-Ltd"	=>	"Buffalo Technology, Ltd",
		"Compex-Systems-Pte-Ltd"	=>	"Compex Systems Pte Ltd",
		"Encore-Electronics-Inc"	=>	"Encore Electronics Inc",
		"JAHT-Technologies-Corp"	=>	"JAHT Technologies Corp",
		"Micronet-Communications-Inc"	=>	"Micronet Communications, Inc",
		"Minitar-Corporation"	=>	"Minitar Corporation",
		"OvisLink-Technologies-Corp"	=>	"OvisLink Technologies Corp",
		"PRO-NETS_Technology_Corp"	=>	"PRO-NETS Technology Corp",
		"Sparklan-comunications-Inc"	=>	"Sparklan comunications, Inc",
		"Unex-Technology-Corp"	=>	"Unex Technology Corp",
		"Vimicro-Corp"	=>	"Vimicro Corp",
		"LOREX-Technology-Inc"	=>	"LOREX Technology Inc",
		"ADOMAX-technology"	=>	"ADOMAX technology",
		"Omega-Technology-Corp"	=>	"Omega Technology Corp",
		"Shenzhen-Vigor-Electronic"	=>	"Shenzhen Vigor Electronic",
		"Astak-Inc"	=>	"Astak Inc",
		"iMicro-Electronics"	=>	"iMicro Electronics",
		"Active-Pixel" =>	"Active Pixel",
		"Microdia-Ltd"	=>	"Microdia Ltd",
		"Silicon-Integrated-Systems-Corp"	=>	"Silicon Integrated Systems Corp",
	);
	
	return (array_key_exists($string,$names)) ? $names[$string] : $string;
}

//get the hardware info from the talk id
function getHardwareInfoFromTalkId($id = 0)
{
	$clean['id'] = (int)$id;
	$talk = new TalkModel();
	$res = $talk->select('hardware.type,hardware.id_hard')->from('hardware inner join talk')->using('id_hard')->where(array('id_talk'=>$clean['id']))->send();
	return $res[0]['hardware'];
}

//get the wiki page info from the talk id
function getWikiPageInfoFromTalkId($id = 0)
{
	$clean['id'] = (int)$id;
	$talk = new WikitalkModel();
	$res = $talk->select('wiki.id_wiki')->from('wiki inner join wiki_talk')->using('id_wiki')->where(array('id_talk'=>$clean['id']))->send();
	return $res[0]['wiki']['id_wiki'];
}

//get the issue info from the message id
function getIssueNumberFromMessageId($id = 0)
{
	$clean['id'] = (int)$id;
	$mess = new MessagesModel();
	$res = $mess->select('issues.id_issue')->from('issues inner join messages')->using('id_issue')->where(array('id_mes'=>$clean['id']))->toList('issues.id_issue')->send();
	return $res[0];
}

//return the URL to the moderated object page
function goToModeratedItem( $row = array() )
{
	$url = null;
	
	switch ($row['type'])
	{
		case 'message':
			$url = 'issues/view/'.Lang::$current.'/'.getIssueNumberFromMessageId($row['id']).'#message-'.$row['id'];
			break;
		case 'talk':
			$hardInfo = getHardwareInfoFromTalkId($row['id']);
			$controller = Hardware::$typeToController[$hardInfo['type']];
			$url = $controller.'/talk/'.Lang::$current.'/'.$hardInfo['id_hard'].'#talk-'.$row['id'];
			break;
		case 'user':
			$url = 'meet/user/'.Lang::$current.'/'.getUserName($row['id']);
			break;
		case 'issue':
			$url = 'issues/view/'.Lang::$current.'/'.$row['id'];
			break;
		case 'wiki_talk':
			$url = 'wiki/talk/'.Lang::$current.'/'.getWikiPageInfoFromTalkId($row['id']).'#wiki-talk-'.$row['id'];
			break;
			
	}
	return 'http://'.DOMAIN_NAME.'/'.$url;
}

function getUrlsFromIdHard($id_hard)
{
	$clean['id_hard'] = (int)$id_hard;
	
	$urlView = "http://".DOMAIN_NAME;
	$urlTalk = "http://".DOMAIN_NAME;
	$deviceName = null;
	
	$hard = new HardwareModel();
	$res = $hard->select('type,model')->where(array('id_hard'=>$clean['id_hard']))->send();
	if (count($res) > 0)
	{
		$urlView = "http://".DOMAIN_NAME."/".Hardware::$typeToController[$res[0]['hardware']['type']]."/view/".Lang::$current."/".$clean['id_hard']."/".encodeUrl($res[0]['hardware']['model']);
		
		$urlTalk = "http://".DOMAIN_NAME."/".Hardware::$typeToController[$res[0]['hardware']['type']]."/talk/".Lang::$current."/".$clean['id_hard'];

		$deviceName = $res[0]['hardware']['model'];
	}
	
	return array('urlView'=>$urlView,'urlTalk'=>$urlTalk,'modelName'=>$deviceName);
	
}

function getDiffArray($associativeArray, $oldArray, $newArray)
{
	$diffArray = array();
	foreach ($associativeArray as $field => $label)
	{
		if (array_key_exists($field,$oldArray) and array_key_exists($field,$newArray))
		{
			$diffArray[$label] = htmlDiff($oldArray[$field], $newArray[$field]);
		}
	}
	return $diffArray;
}