<?php
/**
 *  Validation class for handing and sanitizing user input
 *  
EXAMPLES
include_once("inc/libs/validation/validation.class.php");
ValidationUtils::getRequestVar("GET","test1","turkey");
ValidationUtils::getRequestVar("POST","test1","turkey");
ValidationUtils::getRequestVar("BOTH","test1","turkey");
ValidationUtils::getRequestVar("COOKIE","test1","turkey");
 */
 
class ValidationUtils{
	public static function getRequestVar($postMethod,$indexName,$defaultValue="",$escape=true) {
		$tryPost = false;
		if (strtoupper($postMethod) == "BOTH") {
			if (isset($_GET[$indexName])) {
				if ($_GET[$indexName] != "") {
					$value = $_GET[$indexName];
				} else {
					$tryPost = true;
				}
			} else {
				$tryPost = true;
			}
			if ($tryPost == true){
				if (isset($_POST[$indexName])) {
					if ($_POST[$indexName] != "") {
						$value = $_POST[$indexName];
					} else {
						return $defaultValue;
					}
				} else {
					return $defaultValue;
				}
			}
		} else if (strtoupper($postMethod) == "GET") {
			if (isset($_GET[$indexName])) {
				if ($_GET[$indexName] != "") {
					$value = $_GET[$indexName];
				} else {
					return $defaultValue;
				}
			} else {
				return $defaultValue;
			}
		} else if (strtoupper($postMethod) ==  "POST") {
			if (isset($_POST[$indexName])) {
				if ($_POST[$indexName] != "") {
					$value = $_POST[$indexName];
				} else {
					return $defaultValue;
				}
			} else {
				return $defaultValue;
			}
		} else  {
			if (isset($_COOKIE[$indexName])) {
				if ($_COOKIE[$indexName] != "") {
					$value = $_COOKIE[$indexName];
				} else {
					return $defaultValue;
				}
			} else {
				return $defaultValue;
			}
		} 
		if (!get_magic_quotes_gpc()) {
			if ($escape) {
				return addslashes(trim($value));
			}else{
				return trim($value);
			}	
		} else {
			if ($escape) {
				return trim($value);
			}else{
				return stripslashes(trim($value));
			}
		}
	}
	public static function mySQLDate($datein,$defaultDate=true,$dateTime=false,$euroStyleOutput=false){
		//At this point Euro style is NOT expected coming in, but it can be output
		$tempDate = $datein;
	
		//Takes mm/dd/yyyy and converts to date mysql can use
		$tempDate = str_replace(".","/",$tempDate);
		$tempDate = str_replace("-","/",$tempDate);
	
		//Swap the m/d for the Euro style date "dd/mm/yyyy"
		$dateParts = explode("/", $tempDate);
		
		if (count($dateParts) == 3){
			//Split away the year from the time (if necessary)
			if (strpos($dateParts[2]," ") > -1){    
				$yearParts = explode(" ", $dateParts[2]);
				$year = intval($yearParts[0]);
				$time = $yearParts[1];
				$time = " " . $time;
			}else{	
				$year = intval($dateParts[2]);
				$time = "";
			}
			//Guess on their year if it's less than 4 digits
			if ($year < 25) {
				$year = "20" . $year;
			}else if ($year <= 99){
				$year = "19" . $year;
			}
			$tempDate = $dateParts[0] . "/" . $dateParts[1] . "/" . $year;
		
			//Swap the m/d for the Euro style date "dd/mm/yyyy"
			if ($euroStyleOutput == true){
				$tempDate = $dateParts[1] . "/" . $dateParts[0] . "/" . $year;
			}
			$tempDate .= $time;
		}
		if ($tempDate == "" && $defaultDate == false){
			if ($dateTime){
				return "0000-00-00 00:00:00";
			}else{
				return "0000-00-00";
			}
		}else{
			$date = new DateExt($tempDate);
			if ($dateTime){
				return $date->format("Y-m-d  H:i:s");
			}else{
				return $date->format("Y-m-d");	
			}
		}
	}
	public static function mySQLSafe($valuein){
		return str_replace("'","\'",$valuein); 
	}
	public static function stripHTMLTags($strIn){
		$temp_str = str_replace("<","&lt;",$strIn);
		return str_replace(">","&gt;",$temp_str);
	}
	public static function stripAllBreaks($str){
		$tempStr = str_replace("<br>","",$str);
		$tempStr = str_replace("<br />","",$tempStr);
		$tempStr = str_replace("<p>","",$tempStr);
		$tempStr = str_replace("</p>","",$tempStr);
		return $tempStr;
	}	
	public static function stripHiddenBreaks($str){
		$tempStr = str_replace("\n","",$str);
		$tempStr = str_replace("\r","",$tempStr);
		return $tempStr;
	}		
	public static function stripAll($str,$stripSpaces=false){
		//Connectors are - and _
		$regEx = "";
		if ($stripSpaces){
			$regEx = "[^A-Za-z0-9]";
		}else{
			$regEx = "[^A-Za-z0-9 ]";
		}
		return ereg_replace($regEx,"",$str);
	}	
	public static function cleanJSString($str){
		$tempStr = str_replace("'","&apos;",$str);
		$tempStr = str_replace("\"","&quot;",$tempStr);
		return $tempStr;
	}			
	public static function isValidUSState($statein){
		if (preg_match("/\\b(?:A[KLRZ]|C[AOT]|D[CE]|FL|GA|HI|I[ADLN]|K[SY]|LA|M[ADEINOST]|N[CDEHJMVY]|O[HKR]|PA|RI|S[CD]|T[NX]|UT|V[AT]|W[AIVY])\\b/", $statein)) {
			return true;
		} else {
			return false;
		}
	}
	public static function isValidEmail($emailin){
		//Does not match email addresses using an IP address instead of a domain name.
		//Matches top-level domains up to 7 characters long (.museum). Including longer top level increases the risk of false positives.
		if (preg_match("/^[^0-9][-A-z0-9_]+([.][-A-z0-9_]+)*[@][-A-z0-9_]+([.][-A-z0-9_]+)*[.][A-z]{2,6}$/", $emailin)) {
			return true;
		} else {
			return false;
		}
	}
	public static function urlExists($url) {
		if ($url == ""){return false;}
		$file_headers = @get_headers($url);
		if($file_headers[0] == 'HTTP/1.1 404 Not Found') {
			return false;
		}else {
			return true;
		}
	}	
	/* Adds a protocol to a URL string if it doesn't exist */
	public static function fullURL($url,$defaultProtocol = "http"){
		//Buffer the url with a space so we can check for precise location of protocol (starting) without resorting to hacky evaluations
		$bufferURL = " ".$url;
		//We assume it starts with either http, https, ftp or ftps protocols
		if ($url == ""){
			return "";
		}else if ((strpos($bufferURL,"http") == 1 || strpos($bufferURL,"ftp") == 1 || strpos($bufferURL,$defaultProtocol) == 1) && strpos($bufferURL,"://") > 3){
			return $url;
		}else if (strpos($bufferURL,"//") == 1){
			return $url;
		}else{
			return $defaultProtocol . "://" . $url;
		}
	}		
}


/**
 *  Format class for formatting data.
 *  
 */
class FormatUtils{
	public static function getOrdinal($num){
		// Special case "teenth"
		if ( ($num / 10) % 10 != 1 )    {
			// Handle 1st, 2nd, 3rd
			switch( $num % 10 ){
				case 1: return $num . 'st';
				case 2: return $num . 'nd';
				case 3: return $num . 'rd'; 
			}
		}
		if ($num == 0){
			return $num;
		}else{
			// Everything else is "nth"
			return $num . 'th';
		}
	}
	public static function boolToString($value,$yes,$no){
		$boolVal = substr(strtolower($value),0,1);
		if ($boolVal == "y" || $boolVal == "1" || $boolVal == "t"){
			return $yes;
		}else{
			return $no;
		}
	}
	public static function convertToHTMLBreaks($txt){
		$txt = str_replace("\r\n","\n",$txt);
		$txt = str_replace("\n\r","\n",$txt);
		$txt = str_replace("\n","<br />",$txt);
		return $txt;
	}
	public static function cleanPostURL($title){
		$tempURL = strtolower(str_replace("'","",$title));
		$tempURL = str_replace("!","",$tempURL);
		$tempURL = str_replace(",","",$tempURL);
		$tempURL = str_replace(".","",$tempURL);	
		$tempURL = str_replace(" ","_",$tempURL);
		$tempURL = ereg_replace("[^a-z0-9_-]","",$tempURL);
		return $tempURL;
	}
	public static function cleanYouTubeURL($link){
		if ($link == ""){
			return "";
		}else{
			$link = preg_replace('~
			# Match non-linked youtube URL in the wild. (Rev:20130823)
			https?://         # Required scheme. Either http or https.
			(?:[0-9A-Z-]+\.)? # Optional subdomain.
			(?:               # Group host alternatives.
			  youtu\.be/      # Either youtu.be,
			| youtube         # or youtube.com or
			  (?:-nocookie)?  # youtube-nocookie.com
			  \.com           # followed by
			  \S*             # Allow anything up to VIDEO_ID,
			  [^\w\s-]       # but char before ID is non-ID char.
			)                 # End host alternatives.
			([\w-]{11})      # $1: VIDEO_ID is exactly 11 chars.
			(?=[^\w-]|$)     # Assert next char is non-ID or EOS.
			(?!               # Assert URL is not pre-linked.
			  [?=&+%\w.-]*    # Allow URL (query) remainder.
			  (?:             # Group pre-linked alternatives.
				[\'"][^<>]*>  # Either inside a start tag,
			  | </a>          # or inside <a> element text contents.
			  )               # End recognized pre-linked alts.
			)                 # End negative lookahead assertion.
			[?=&+%\w.-]*        # Consume any URL (query) remainder.
			~ix', 
			'http://www.youtube.com/watch?v=$1',
			$link);
			return $link;	
        }
	}	
	public static function ipToNumber($ipString){
		if ($ipString == "") {
			return 0;
		} else {
			$ips = explode(".", $ipString);
			return ($ips[3] + $ips[2] * 256 + $ips[1] * 256 * 256 + $ips[0] * 256 * 256 * 256);
		}
	}	
	public static function xmlFormat($xmlIn,$errors){
		$xml = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<content>\n" . $xmlIn;
	
		//Write out errors
		if ($errors == "") {
			$xml .= "\t<script_message>ok</script_message>\n";
		} else {
			$xml .= "\t<script_message>failed</script_message>\n";
			$xml .= "\t<errors>".$errors."</errors>\n";
		}
		$xml .= "</content>";
		return $xml;
	}
}
?>