add tile api

2018-10-17 18:05:10 +02:00
parent abaf459017
commit 8ceacaf175
5 changed files with 144 additions and 3 deletions
--- a/inc/cacher.php
+++ b/inc/cacher.php
@@ -0,0 +1,103 @@
+<?php
+
+class Cacher extends PhpObject
+{
+	const CACHE_FOLDER = 'cache/';
+	const DATA_RETENTION = 60 * 60 * 24 * 90; //3 months
+	
+	private $sPattern;
+	
+	//Params
+	private $sId;
+	private $iX;
+	private $iY;
+	private $iZ;
+	private $sToken;
+	private $asDomains;
+	
+	public function __construct($sPattern, $sId='')
+	{
+		parent::__construct(__CLASS__, Settings::DEBUG);
+		$this->setPattern($sPattern);
+		$this->setId($sId);
+		$this->iX = 0;
+		$this->iY = 0;
+		$this->iZ = 0;
+		$this->sToken = '';
+		$this->asDomains = array();
+	}
+	
+	public function setId($sId) {
+		$this->sId = $sId;
+	}
+	
+	public function setPattern($sPattern) {
+		$this->sPattern = $sPattern;
+	}
+	
+	public function setToken($sToken) {
+		$this->sToken = $sToken;
+	}
+	
+	public function setDomains($asDomains) {
+		$this->asDomains = $asDomains;
+	}
+	
+	public function setGeoPos($iX, $iY, $iZ) {
+		$this->iX = $iX;
+		$this->iY = $iY;
+		$this->iZ = $iZ;
+	}
+	
+	public function pushTile($iX, $iY, $iZ) {
+		$this->setGeoPos($iX, $iY, $iZ);
+		$sTilePath = $this->getFilePath();
+		if(!$this->isFileAvailable($sTilePath)) {
+			$oCurl = curl_init();
+			curl_setopt($oCurl, CURLOPT_URL, $this->getUrl());
+			curl_setopt($oCurl, CURLOPT_HEADER, false);
+			curl_setopt($oCurl, CURLOPT_RETURNTRANSFER, true);
+			curl_setopt($oCurl, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']);
+			curl_setopt($oCurl, CURLOPT_REFERER, 'http://spot.lutran.fr');
+			$sContent = curl_exec($oCurl);
+			curl_close($oCurl);
+			
+			file_put_contents($sTilePath, $sContent);
+		}
+		else $sContent = file_get_contents($sTilePath);
+		
+		header('Content-type: '.mime_content_type($sTilePath));
+		return $sContent;
+	}
+	
+	public function getUrl() {
+		$asParams = $this->getUrlParams();
+		$sUrl = $this->sPattern;
+		foreach($asParams as $sParam=>$sValue) {
+			$sUrl = str_replace('{'.$sParam.'}', $sValue, $sUrl);
+		}
+		return $sUrl;
+	}
+	
+	private function isFileAvailable($sTilePath) {
+		if(!file_exists($sTilePath)) return false;
+		else return (time() - filemtime($sTilePath) < self::DATA_RETENTION);
+	}
+	
+	private function getFilePath() {
+		$asParams = $this->getUrlParams();
+		return self::CACHE_FOLDER.'/'.$asParams['id'].'_'.$asParams['x'].'_'.$asParams['y'].'_'.$asParams['z'].'.tile';
+	}
+	
+	private function getUrlParams() {
+		return array(
+			'id'	=> $this->sId,
+			'x'		=> $this->iX,
+			'y'		=> $this->iY,
+			'z'		=> $this->iZ,
+			'token' => $this->sToken,
+			's'		=> empty($this->asDomains)?'':$this->asDomains[array_rand($this->asDomains)]
+		);
+	}
+}
+