#4 : support for merging different timezones + test suites

(cherry picked from commit cbffe0b)

ics-collector/debugger/index.php

@@ -37,7 +37,7 @@ function generateDataOptions() {
 		</select>
 		</div>
 		<textarea id="icstext" placeholder="Copy your ics / iCal text here" class="largeArea"></textarea> 
-		<button id="importConfirmBtn" onclick="sendParseRequest();">Parse me !</button>
+		<button id="importConfirmBtn" onclick="sendParseRequest();">Feed me !</button>
 	</div>
 	<div id="mergePanel" class="hidden">
 		<textarea id="mergedIcsText" class="hidden" disabled></textarea>

ics-collector/debugger/lib/class.iCalReader.php

@@ -15,6 +15,7 @@
  * UPDATE NOTES : @zyzo (htto://www.github.com/zyzo)
  *   - Add recurrence event counter
  *   - Add option disable recurrent events
+ *   - Return more details for DATE/DATE-TIME property
  * 
  */
 
@@ -158,8 +159,10 @@ public function initLines($lines)
      */
     public function addCalendarComponentWithKeyAndValue($component, $keyword, $value)
     {
+        $explodedKeyword = null;
         if (strstr($keyword, ';')) {
             // Ignore everything in keyword after a ; (things like Language, etc)
+            $explodedKeyword = explode(';', $keyword);
             $keyword = substr($keyword, 0, strpos($keyword, ';'));
         }
         if ($keyword == false) {
@@ -178,8 +181,27 @@ public function addCalendarComponentWithKeyAndValue($component, $keyword, $value
         }
 
         if (stristr($keyword, 'DTSTART') or stristr($keyword, 'DTEND') or stristr($keyword, 'EXDATE')) {
-            $keyword = explode(';', $keyword);
-            $keyword = $keyword[0];
+            //$keyword = $keyword[0];
+            $meta = array();
+            if (strlen($value) === 8) {
+                // DATE format 19970714
+                $meta['type'] = 'DATE';
+            } else {
+                // DATE-TIME format
+                $meta['type'] = 'DATE-TIME';
+                if (strstr('T', $value)) {
+                    // format 2 : DATE with UTC time 19980119T070000Z
+                    $meta['format'] = 'UTC-TIME';
+                } else {
+                    // format 1 : DATE with local time 19980118T230000
+                    $meta['format'] = 'LOCAL-TIME';
+                    if (count($explodedKeyword) === 2 && stristr($explodedKeyword[1], 'TZID=')) {
+                        // timezone specification exists
+                        $meta['tzid'] = explode('=', $explodedKeyword[1])[1]; 
+                    }
+                }
+            }
+            $value = array('meta' => $meta, 'value' => $value);
         }
 
         switch ($component) {

ics-collector/debugger/lib/ics-merger-config.ini

@@ -1,2 +1,2 @@
 DEFAULT_PRODID = "-//FOSSASIA//FOSSASIA Calendar//EN"
-DEFAULT_TIME_ZONE => Europe/Berlin
+DEFAULT_TIME_ZONE = Europe/Berlin

ics-collector/debugger/lib/ics-merger.php

@@ -5,10 +5,12 @@ class IcsMerger {
 
 	private $inputs = array();
 	private $config = array();
+	private $defaultTimezone;
 	const CONFIG_FILENAME = 'ics-merger-config.ini';
 
 	public function __construct() {
 		$this->config = parse_ini_file(IcsMerger::CONFIG_FILENAME);
+		$this->defaultTimezone = new DateTimeZone($this->config['DEFAULT_TIME_ZONE']);
 	}
 
 	public function add($text) {
@@ -19,19 +21,19 @@ public function getResult() {
 		$result = array(
 			'VCALENDAR' => array(),
 			'VEVENTS' => array()
-		); 
+		);
 		foreach ($this->inputs as $icsText) {
 			$ical = new ICal(explode("\n", $icsText), true);
+			//var_dump($ical);
 			foreach($ical->cal as $key => $value) {
 				switch($key) {
 				case 'VCALENDAR' :
 					$result['VCALENDAR'] = array_merge($result['VCALENDAR'], $value);
 					break;
 				case 'VEVENT' :
-					$result['VEVENTS'] = array_merge($result['VEVENTS'], $value);
+					$result['VEVENTS'] = array_merge($result['VEVENTS'], $this->processEvents($value));
 					break;
 				default : 
-					// ignore others
 					break;
 				}
 			}
@@ -47,6 +49,39 @@ public function getResult() {
 		return $result;
 	}
 
+	private function processEvents($events) {
+		foreach($events as &$event) {
+			//echo "$key hahdsad" . PHP_EOL;
+			foreach ($event as $key => &$value) {
+				switch($key) {
+				// properties of type DATE / DATE-TIME
+				case 'DTSTART':
+				case 'DTEND' :
+				case 'RDATE' :
+					// only local datime needs conversion
+					if ($value['meta']['type'] == 'DATE-TIME' && $value['meta']['format'] == 'LOCAL-TIME') {
+						if (array_key_exists('tzid', $value['meta'])) {
+							$tz = new DateTimeZone($value['meta']['tzid']);
+							try {
+								$time = new DateTime($value['value'], $tz);
+							} catch (Exception $e) {
+								echo $e->getMessage();
+								exit(1);
+							}
+							$time->setTimezone($this->defaultTimezone);
+							$value['value'] =  $time->format('Ymd\THis');
+						}
+					}
+					break;
+				default : 
+					// ignore others
+					break;
+				}
+			}
+		}
+		return $events;
+	}
+
 	public static function getRawText($icsMergerResult) {
 
 		$callback = function ($v, $k) {

ics-collector/debugger/tests/IcsMergerTest.php

@@ -0,0 +1,69 @@
+<?php
+require_once(realpath(dirname(__FILE__)) .  '/../lib/ics-merger.php');
+
+class IcsMergerTest extends PHPUnit_Framework_TestCase {
+
+	private $merger;
+
+	/**
+	 * @before
+	 */
+	public function setupMerger() {
+		$this->merger = new IcsMerger();
+	}
+
+	public function testWithTwoFile() {
+		$this->merger->add(file_get_contents('../data/freifunk_0'));
+		$this->merger->add(file_get_contents('../data/freifunk_3'));
+		$result = $this->merger->getResult();
+		$this->assertEquals(count($result['VEVENTS']), 3);
+		/*
+		echo '<pre>';
+		var_dump($result);
+		echo '</pre>';
+		echo IcsMerger::getRawText($result);
+		*/
+	}
+
+	public function testConversionLocalTimeWithTimezone() {
+		$this->merger->add
+		("BEGIN:VCALENDAR
+		  BEGIN:VEVENT
+		  DTSTART;TZID=Asia/Saigon:20150527T213000
+		  SUMMARY:Event 1
+		  END:VEVENT
+		  END:VCALENDAR
+		");
+		$this->merger->add
+		("BEGIN:VCALENDAR
+		  BEGIN:VEVENT
+		  DTSTART;TZID=EST:20150527T213000
+		  SUMMARY:Event 2
+		  END:VEVENT
+		  END:VCALENDAR
+		");
+		$this->assertEquals($this->merger->getResult()['VEVENTS']['0']['DTSTART']['value'], '20150527T163000');
+		$this->assertEquals($this->merger->getResult()['VEVENTS']['1']['DTSTART']['value'], '20150528T033000');
+	}
+
+	public function testConversionLocalTimeWithoutTimezone() {
+		$this->merger->add
+		("BEGIN:VCALENDAR
+		  BEGIN:VEVENT
+		  DTSTART:20150527T213000
+		  SUMMARY:Event 1
+		  END:VEVENT
+		  END:VCALENDAR
+		");
+		$this->merger->add
+		("BEGIN:VCALENDAR
+		  BEGIN:VEVENT
+		  DTSTART;TZID=EST:20150527T213000
+		  SUMMARY:Event 2
+		  END:VEVENT
+		  END:VCALENDAR
+		");
+		$this->assertEquals($this->merger->getResult()['VEVENTS']['0']['DTSTART']['value'], '20150527T163000');
+		$this->assertEquals($this->merger->getResult()['VEVENTS']['1']['DTSTART']['value'], '20150528T023000');
+	}
+}