brew.php

<?php

/**
 * Class FileNotFoundException
 * @author Dennis Thompson
 * @license MIT
 * @version 1.0
 */
class FileNotFoundException extends Exception {

	public function __construct($message, $code = 0, Exception $previous = null) {
		parent::__construct($message, $code, $previous);
	}

}

/**
 * Class Log
 * @author Dennis Thompson
 * @license MIT
 * @version 1.0
 */
class Log {

	private $handle; // store resource

	/**
	 * Open $file in cwd for appending, create if not created
	 * @param        $file
	 * @param string $mode
	 */
	public function __construct($file, $mode = "a") {
		$this->handle = fopen($file, $mode);
	}

	/**
	 * Writes info to the log
	 * @param mixed $entries and string or an array to write to log
	 * @access public
	 */
	public function log($entries) {
		if(is_string($entries)) {
			fwrite($this->handle, "Error: [" . date("d/M/Y H:i:s") . "] " . $entries . "\n");
		} else {
			foreach($entries as $value) {
				fwrite($this->handle, "Error: [" . date("d/M/Y H:i:s") . "] " . $value . "\n");
			}
		}
	}

}

/**
 * Class Import
 * @author Dennis Thompson
 * @license MIT
 * @version 1.1
 */
class Import {

	const LOG_NAME = "beer_map_error.log";
	const REMOTE_URL = "http://beermapping.com/kml/";
	const REMOTE_FILE = "sandiego.kml";
	const LOCAL_KML_FILENAME = "sandiego.kml";

	private $errors, $mail_on_failure, $to, $subject, $headers, $log;

	public function __construct($mail_on_failure = true) {
		$this->log = new Log(self::LOG_NAME); // open log for appending
		$this->errors = array();
		$this->mail_on_failure = $mail_on_failure;
		if($this->mail_on_failure) {
			$this->to = "info@kingsofthecraft.com";
			$this->subject  = "Error retrieving beer maps kml";
			$this->headers  = "From: " . $_SERVER["SERVER_NAME"] . "<noreply@kingsofthecraft.com>\r\n";
			$this->headers .= "X-Mailer: PHP/" . phpversion();
		}
	}

	/**
	 * Gets the errors for custom error handling
	 * @return array
	 * @access public
	 * @since 1.0
	 */
	public function getErrors() {
		return $this->errors;
	}

	/**
	 * Gets a file from a remote server and downloads it
	 * @access public
	 */
	public function getRemoteFile() {
		if(!file_exists("public_html/" . self::LOCAL_KML_FILENAME) || sha1_file("http://beermapping.com/kml/sandiego.kml") !== sha1_file("public_html/" . self::LOCAL_KML_FILENAME)) {
			if(function_exists("curl_version")) {
				$file = $this->getRemoteFileCurl();
				$handle = fopen("public_html/" . self::LOCAL_KML_FILENAME, "w");
				fwrite($handle, $file);
				fclose($handle);
			} else {
				$this->getRemoteFileCopy();
			}
		}
	}

	/**
	 * Sends email upon failure
	 * @access private
	 */
	private function sendErrorEmail() {
		$message = "Errors:\r\n";
		for($i = 0; $i < count($this->errors); $i++) {
			$message .= "#" . $i . " " . $this->errors[$i] . "\r\n";
		}

		if(mail($this->to, $this->subject, $message, $this->headers)) {
			$this->log->log("Success sending error report to " . $this->to);
		} else {
			$this->log->log($this->errors[] = "Error sending failure email. Issues are described below");
		}
	}

	/**
	 * Gets remote file and returns it's contents using cURL
	 * @access private
	 * @return string
	 */
	private function getRemoteFileCurl() {
		$ch = curl_init();
		curl_setopt($ch, CURLOPT_URL, self::REMOTE_URL . self::REMOTE_FILE);
		curl_setopt($ch, CURLOPT_VERBOSE, 0);
		curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
		curl_setopt($ch, CURLOPT_AUTOREFERER, false);
		curl_setopt($ch, CURLOPT_REFERER, self::REMOTE_URL);
		curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
		curl_setopt($ch, CURLOPT_HEADER, 0);
		$result = curl_exec($ch);
		curl_close($ch);
		return $result;
	}

	/**
	 * Gets remote file and returns it's contents using copy
	 * @throws Exception
	 */
	private function getRemoteFileCopy() {
		if(!copy(self::REMOTE_URL . self::REMOTE_FILE, "./" . self::LOCAL_KML_FILENAME)) {
			$msg = "Failed to copy " . self::REMOTE_URL . self::REMOTE_FILE . " into " . self::LOCAL_KML_FILENAME;
			$this->log->log($msg);
			$this->sendErrorEmail();
			throw new Exception($msg, 1);
		}
	}

}