]> git.mxchange.org Git - friendica.git/blobdiff - include/event.php
PR 3419: Avoid problems with PHP7 and dba.php
[friendica.git] / include / event.php
index fedbe24468ab67a4085422375974013e279bd77e..64b1ebddc3c4a4008ce11e2f4c82c5050063622a 100644 (file)
@@ -1,53 +1,80 @@
 <?php
+/**
+ * @file include/event.php
+ * @brief functions specific to event handling
+ */
 
-require_once('include/bbcode.php');
-require_once('include/map.php');
+require_once 'include/bbcode.php';
+require_once 'include/map.php';
+require_once 'include/datetime.php';
 
-function format_event_html($ev) {
+function format_event_html($ev, $simple = false) {
 
-
-
-       if(! ((is_array($ev)) && count($ev)))
+       if (! ((is_array($ev)) && count($ev))) {
                return '';
+       }
 
        $bd_format = t('l F d, Y \@ g:i A') ; // Friday January 18, 2011 @ 8 AM
 
+       $event_start = (($ev['adjust']) ? day_translate(datetime_convert('UTC', date_default_timezone_get(),
+                       $ev['start'] , $bd_format ))
+                       : day_translate(datetime_convert('UTC', 'UTC',
+                       $ev['start'] , $bd_format)));
+
+       $event_end = (($ev['adjust']) ? day_translate(datetime_convert('UTC', date_default_timezone_get(),
+                               $ev['finish'] , $bd_format ))
+                               : day_translate(datetime_convert('UTC', 'UTC',
+                               $ev['finish'] , $bd_format )));
+
+       if ($simple) {
+               $o = "<h3>" . bbcode($ev['summary']) . "</h3>";
+
+               $o .= "<p>" . bbcode($ev['desc']) . "</p>";
+
+               $o .= "<h4>" . t('Starts:') . "</h4><p>" . $event_start . "</p>";
+
+               if (! $ev['nofinish']) {
+                       $o .= "<h4>" . t('Finishes:') . "</h4><p>" . $event_end  ."</p>";
+               }
+
+               if (strlen($ev['location'])) {
+                       $o .= "<h4>" . t('Location:') . "</h4><p>" . $ev['location'] . "</p>";
+               }
+
+               return $o;
+       }
+
        $o = '<div class="vevent">' . "\r\n";
 
 
-       $o .= '<p class="summary event-summary">' . bbcode($ev['summary']) .  '</p>' . "\r\n";
+       $o .= '<p class="summary event-summary">' . bbcode($ev['summary']) . '</p>' . "\r\n";
 
-       $o .= '<p class="description event-description">' . bbcode($ev['desc']) .  '</p>' . "\r\n";
+       $o .= '<p class="description event-description">' . bbcode($ev['desc']) . '</p>' . "\r\n";
 
        $o .= '<p class="event-start">' . t('Starts:') . ' <abbr class="dtstart" title="'
-               . datetime_convert('UTC','UTC',$ev['start'], (($ev['adjust']) ? ATOM_TIME : 'Y-m-d\TH:i:s' ))
-               . '" >' 
-               . (($ev['adjust']) ? day_translate(datetime_convert('UTC', date_default_timezone_get(), 
-                       $ev['start'] , $bd_format ))
-                       :  day_translate(datetime_convert('UTC', 'UTC', 
-                       $ev['start'] , $bd_format)))
+               . datetime_convert('UTC', 'UTC', $ev['start'], (($ev['adjust']) ? ATOM_TIME : 'Y-m-d\TH:i:s' ))
+               . '" >'.$event_start
                . '</abbr></p>' . "\r\n";
 
-       if(! $ev['nofinish'])
+       if (! $ev['nofinish']) {
                $o .= '<p class="event-end" >' . t('Finishes:') . ' <abbr class="dtend" title="'
-                       . datetime_convert('UTC','UTC',$ev['finish'], (($ev['adjust']) ? ATOM_TIME : 'Y-m-d\TH:i:s' ))
-                       . '" >' 
-                       . (($ev['adjust']) ? day_translate(datetime_convert('UTC', date_default_timezone_get(), 
-                               $ev['finish'] , $bd_format ))
-                               :  day_translate(datetime_convert('UTC', 'UTC', 
-                               $ev['finish'] , $bd_format )))
-                       . '</abbr></p>'  . "\r\n";
+                       . datetime_convert('UTC', 'UTC', $ev['finish'], (($ev['adjust']) ? ATOM_TIME : 'Y-m-d\TH:i:s' ))
+                       . '" >'.$event_end
+                       . '</abbr></p>' . "\r\n";
+       }
 
-       if(strlen($ev['location'])){
-               $o .= '<p class="event-location"> ' . t('Location:') . ' <span class="location">' 
-                       . bbcode($ev['location']) 
+       if (strlen($ev['location'])) {
+               $o .= '<p class="event-location"> ' . t('Location:') . ' <span class="location">'
+                       . bbcode($ev['location'])
                        . '</span></p>' . "\r\n";
-               
-               if (strpos($ev['location'], "[map")===False) {
+
+               // Include a map of the location if the [map] BBCode is used
+               if (strpos($ev['location'], "[map") !== false) {
                        $map = generate_named_map($ev['location']);
-                       if ($map!==$ev['location']) $o.=$map;
+                       if ($map !== $ev['location']) {
+                               $o.= $map;
+                       }
                }
-               
        }
 
        $o .= '</div>' . "\r\n";
@@ -55,10 +82,10 @@ function format_event_html($ev) {
 }
 
 /*
+@TODO old-lost code found?
 function parse_event($h) {
 
        require_once('include/Scrape.php');
-       require_once('library/HTMLPurifier.auto.php');
        require_once('include/html2bbcode');
 
        $h = '<html><body>' . $h . '</body></html>';
@@ -72,26 +99,26 @@ function parse_event($h) {
                logger('parse_event: parse error: ' . $e);
        }
 
-       if(! $dom)
+       if (! $dom)
                return $ret;
 
        $items = $dom->getElementsByTagName('*');
 
-       foreach($items as $item) {
-               if(attribute_contains($item->getAttribute('class'), 'vevent')) {
+       foreach ($items as $item) {
+               if (attribute_contains($item->getAttribute('class'), 'vevent')) {
                        $level2 = $item->getElementsByTagName('*');
-                       foreach($level2 as $x) {
-                               if(attribute_contains($x->getAttribute('class'),'dtstart') && $x->getAttribute('title')) {
+                       foreach ($level2 as $x) {
+                               if (attribute_contains($x->getAttribute('class'),'dtstart') && $x->getAttribute('title')) {
                                        $ret['start'] = $x->getAttribute('title');
-                                       if(! strpos($ret['start'],'Z'))
+                                       if (! strpos($ret['start'],'Z'))
                                                $ret['adjust'] = true;
                                }
-                               if(attribute_contains($x->getAttribute('class'),'dtend') && $x->getAttribute('title'))
+                               if (attribute_contains($x->getAttribute('class'),'dtend') && $x->getAttribute('title'))
                                        $ret['finish'] = $x->getAttribute('title');
 
-                               if(attribute_contains($x->getAttribute('class'),'description'))
+                               if (attribute_contains($x->getAttribute('class'),'description'))
                                        $ret['desc'] = $x->textContent;
-                               if(attribute_contains($x->getAttribute('class'),'location'))
+                               if (attribute_contains($x->getAttribute('class'),'location'))
                                        $ret['location'] = $x->textContent;
                        }
                }
@@ -99,23 +126,23 @@ function parse_event($h) {
 
        // sanitise
 
-       if((x($ret,'desc')) && ((strpos($ret['desc'],'<') !== false) || (strpos($ret['desc'],'>') !== false))) {
+       if ((x($ret,'desc')) && ((strpos($ret['desc'],'<') !== false) || (strpos($ret['desc'],'>') !== false))) {
                $config = HTMLPurifier_Config::createDefault();
                $config->set('Cache.DefinitionImpl', null);
                $purifier = new HTMLPurifier($config);
                $ret['desc'] = html2bbcode($purifier->purify($ret['desc']));
        }
 
-       if((x($ret,'location')) && ((strpos($ret['location'],'<') !== false) || (strpos($ret['location'],'>') !== false))) {
+       if ((x($ret,'location')) && ((strpos($ret['location'],'<') !== false) || (strpos($ret['location'],'>') !== false))) {
                $config = HTMLPurifier_Config::createDefault();
                $config->set('Cache.DefinitionImpl', null);
                $purifier = new HTMLPurifier($config);
                $ret['location'] = html2bbcode($purifier->purify($ret['location']));
        }
 
-       if(x($ret,'start'))
+       if (x($ret,'start'))
                $ret['start'] = datetime_convert('UTC','UTC',$ret['start']);
-       if(x($ret,'finish'))
+       if (x($ret,'finish'))
                $ret['finish'] = datetime_convert('UTC','UTC',$ret['finish']);
 
        return $ret;
@@ -126,63 +153,81 @@ function format_event_bbcode($ev) {
 
        $o = '';
 
-       if($ev['summary'])
+       if ($ev['summary']) {
                $o .= '[event-summary]' . $ev['summary'] . '[/event-summary]';
+       }
 
-       if($ev['desc'])
+       if ($ev['desc']) {
                $o .= '[event-description]' . $ev['desc'] . '[/event-description]';
+       }
 
-       if($ev['start'])
+       if ($ev['start']) {
                $o .= '[event-start]' . $ev['start'] . '[/event-start]';
+       }
 
-       if(($ev['finish']) && (! $ev['nofinish']))
+       if (($ev['finish']) && (! $ev['nofinish'])) {
                $o .= '[event-finish]' . $ev['finish'] . '[/event-finish]';
-       if($ev['location'])
+       }
+
+       if ($ev['location']) {
                $o .= '[event-location]' . $ev['location'] . '[/event-location]';
+       }
 
-       if($ev['adjust'])
+       if ($ev['adjust']) {
                $o .= '[event-adjust]' . $ev['adjust'] . '[/event-adjust]';
-
+       }
 
        return $o;
-
 }
 
 function bbtovcal($s) {
        $o = '';
        $ev = bbtoevent($s);
-       if($ev['desc'])
+
+       if ($ev['desc']) {
                $o = format_event_html($ev);
+       }
+
        return $o;
 }
 
-
 function bbtoevent($s) {
 
        $ev = array();
 
        $match = '';
-       if(preg_match("/\[event\-summary\](.*?)\[\/event\-summary\]/is",$s,$match))
+       if (preg_match("/\[event\-summary\](.*?)\[\/event\-summary\]/is", $s, $match)) {
                $ev['summary'] = $match[1];
+       }
+
        $match = '';
-       if(preg_match("/\[event\-description\](.*?)\[\/event\-description\]/is",$s,$match))
+       if (preg_match("/\[event\-description\](.*?)\[\/event\-description\]/is", $s, $match)) {
                $ev['desc'] = $match[1];
+       }
+
        $match = '';
-       if(preg_match("/\[event\-start\](.*?)\[\/event\-start\]/is",$s,$match))
+       if (preg_match("/\[event\-start\](.*?)\[\/event\-start\]/is", $s, $match)) {
                $ev['start'] = $match[1];
+       }
+
        $match = '';
-       if(preg_match("/\[event\-finish\](.*?)\[\/event\-finish\]/is",$s,$match))
+       if (preg_match("/\[event\-finish\](.*?)\[\/event\-finish\]/is", $s, $match)) {
                $ev['finish'] = $match[1];
+       }
+
        $match = '';
-       if(preg_match("/\[event\-location\](.*?)\[\/event\-location\]/is",$s,$match))
+       if (preg_match("/\[event\-location\](.*?)\[\/event\-location\]/is", $s, $match)) {
                $ev['location'] = $match[1];
+       }
+
        $match = '';
-       if(preg_match("/\[event\-adjust\](.*?)\[\/event\-adjust\]/is",$s,$match))
+       if (preg_match("/\[event\-adjust\](.*?)\[\/event\-adjust\]/is", $s, $match)) {
                $ev['adjust'] = $match[1];
+       }
+
        $ev['nofinish'] = (((x($ev, 'start') && $ev['start']) && (!x($ev, 'finish') || !$ev['finish'])) ? 1 : 0);
-       return $ev;
 
+       return $ev;
 }
 
 
@@ -192,52 +237,62 @@ function sort_by_date($a) {
        return $a;
 }
 
-
 function ev_compare($a,$b) {
 
-       $date_a = (($a['adjust']) ? datetime_convert('UTC',date_default_timezone_get(),$a['start']) : $a['start']);
-       $date_b = (($b['adjust']) ? datetime_convert('UTC',date_default_timezone_get(),$b['start']) : $b['start']);
+       $date_a = (($a['adjust']) ? datetime_convert('UTC', date_default_timezone_get(), $a['start']) : $a['start']);
+       $date_b = (($b['adjust']) ? datetime_convert('UTC', date_default_timezone_get(), $b['start']) : $b['start']);
+
+       if ($date_a === $date_b) {
+               return strcasecmp($a['desc'], $b['desc']);
+       }
 
-       if($date_a === $date_b)
-               return strcasecmp($a['desc'],$b['desc']);
-       
-       return strcmp($date_a,$date_b);
+       return strcmp($date_a, $date_b);
 }
 
+function event_delete($event_id) {
+       if ($event_id == 0) {
+               return;
+       }
 
+       q("DELETE FROM `event` WHERE `id` = %d", intval($event_id));
+       logger("Deleted event ".$event_id, LOGGER_DEBUG);
+}
 
 function event_store($arr) {
 
-       require_once('include/datetime.php');
-       require_once('include/items.php');
-       require_once('include/bbcode.php');
+       require_once 'include/datetime.php';
+       require_once 'include/items.php';
+       require_once 'include/bbcode.php';
 
        $a = get_app();
 
-       $arr['created'] = (($arr['created']) ? $arr['created'] : datetime_convert());
-       $arr['edited']  = (($arr['edited']) ? $arr['edited'] : datetime_convert());
-       $arr['type']    = (($arr['type']) ? $arr['type'] : 'event' );
-       $arr['cid']     = ((intval($arr['cid'])) ? intval($arr['cid']) : 0);
-       $arr['uri']     = (x($arr,'uri') ? $arr['uri'] : item_new_uri($a->get_hostname(),$arr['uid']));
-       $arr['private'] = ((x($arr,'private')) ? intval($arr['private']) : 0);
+       $arr['created'] = (($arr['created'])     ? $arr['created']         : datetime_convert());
+       $arr['edited']  = (($arr['edited'])      ? $arr['edited']          : datetime_convert());
+       $arr['type']    = (($arr['type'])        ? $arr['type']            : 'event' );
+       $arr['cid']     = ((intval($arr['cid'])) ? intval($arr['cid'])     : 0);
+       $arr['uri']     = (x($arr, 'uri')        ? $arr['uri']             : item_new_uri($a->get_hostname(), $arr['uid']));
+       $arr['private'] = ((x($arr, 'private'))  ? intval($arr['private']) : 0);
+       $arr['guid']    = get_guid(32);
 
-       if($arr['cid'])
+       if ($arr['cid']) {
                $c = q("SELECT * FROM `contact` WHERE `id` = %d AND `uid` = %d LIMIT 1",
                        intval($arr['cid']),
                        intval($arr['uid'])
                );
-       else
+       } else {
                $c = q("SELECT * FROM `contact` WHERE `self` = 1 AND `uid` = %d LIMIT 1",
                        intval($arr['uid'])
                );
+       }
 
-       if(count($c))
+       if (dbm::is_result($c)) {
                $contact = $c[0];
+       }
 
 
        // Existing event being modified
 
-       if($arr['id']) {
+       if ($arr['id']) {
 
                // has the event actually changed?
 
@@ -245,7 +300,7 @@ function event_store($arr) {
                        intval($arr['id']),
                        intval($arr['uid'])
                );
-               if((! count($r)) || ($r[0]['edited'] === $arr['edited'])) {
+               if ((! dbm::is_result($r)) || ($r[0]['edited'] === $arr['edited'])) {
 
                        // Nothing has changed. Grab the item id to return.
 
@@ -253,7 +308,7 @@ function event_store($arr) {
                                intval($arr['id']),
                                intval($arr['uid'])
                        );
-                       return((count($r)) ? $r[0]['id'] : 0);
+                       return ((dbm::is_result($r)) ? $r[0]['id'] : 0);
                }
 
                // The event changed. Update it.
@@ -267,11 +322,7 @@ function event_store($arr) {
                        `location` = '%s',
                        `type` = '%s',
                        `adjust` = %d,
-                       `nofinish` = %d,
-                       `allow_cid` = '%s',
-                       `allow_gid` = '%s',
-                       `deny_cid` = '%s',
-                       `deny_gid` = '%s'
+                       `nofinish` = %d
                        WHERE `id` = %d AND `uid` = %d",
 
                        dbesc($arr['edited']),
@@ -283,10 +334,6 @@ function event_store($arr) {
                        dbesc($arr['type']),
                        intval($arr['adjust']),
                        intval($arr['nofinish']),
-                       dbesc($arr['allow_cid']),
-                       dbesc($arr['allow_gid']),
-                       dbesc($arr['deny_cid']),
-                       dbesc($arr['deny_gid']),
                        intval($arr['id']),
                        intval($arr['uid'])
                );
@@ -294,43 +341,37 @@ function event_store($arr) {
                        intval($arr['id']),
                        intval($arr['uid'])
                );
-               if(count($r)) {
+               if (dbm::is_result($r)) {
                        $object = '<object><type>' . xmlify(ACTIVITY_OBJ_EVENT) . '</type><title></title><id>' . xmlify($arr['uri']) . '</id>';
                        $object .= '<content>' . xmlify(format_event_bbcode($arr)) . '</content>';
                        $object .= '</object>' . "\n";
 
-
-                       q("UPDATE `item` SET `body` = '%s', `object` = '%s', `allow_cid` = '%s', `allow_gid` = '%s', `deny_cid` = '%s', `deny_gid` = '%s', `edited` = '%s', `private` = %d WHERE `id` = %d AND `uid` = %d",
+                       q("UPDATE `item` SET `body` = '%s', `object` = '%s', `edited` = '%s' WHERE `id` = %d AND `uid` = %d",
                                dbesc(format_event_bbcode($arr)),
                                dbesc($object),
-                               dbesc($arr['allow_cid']),
-                               dbesc($arr['allow_gid']),
-                               dbesc($arr['deny_cid']),
-                               dbesc($arr['deny_gid']),
                                dbesc($arr['edited']),
-                               intval($arr['private']),
                                intval($r[0]['id']),
                                intval($arr['uid'])
                        );
 
                        $item_id = $r[0]['id'];
-               }
-               else
+               } else {
                        $item_id = 0;
+               }
 
                call_hooks("event_updated", $arr['id']);
 
                return $item_id;
-       }
-       else {
+       } else {
 
-               // New event. Store it. 
+               // New event. Store it.
 
-               $r = q("INSERT INTO `event` ( `uid`,`cid`,`uri`,`created`,`edited`,`start`,`finish`,`summary`, `desc`,`location`,`type`,
+               $r = q("INSERT INTO `event` (`uid`,`cid`,`guid`,`uri`,`created`,`edited`,`start`,`finish`,`summary`, `desc`,`location`,`type`,
                        `adjust`,`nofinish`,`allow_cid`,`allow_gid`,`deny_cid`,`deny_gid`)
-                       VALUES ( %d, %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d, '%s', '%s', '%s', '%s' ) ",
+                       VALUES ( %d, %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d, '%s', '%s', '%s', '%s' ) ",
                        intval($arr['uid']),
                        intval($arr['cid']),
+                       dbesc($arr['guid']),
                        dbesc($arr['uri']),
                        dbesc($arr['created']),
                        dbesc($arr['edited']),
@@ -353,8 +394,9 @@ function event_store($arr) {
                        dbesc($arr['uri']),
                        intval($arr['uid'])
                );
-               if(count($r))
+               if (dbm::is_result($r)) {
                        $event = $r[0];
+               }
 
                $item_arr = array();
 
@@ -362,6 +404,7 @@ function event_store($arr) {
                $item_arr['contact-id']    = $arr['cid'];
                $item_arr['uri']           = $arr['uri'];
                $item_arr['parent-uri']    = $arr['uri'];
+               $item_arr['guid']          = $arr['guid'];
                $item_arr['type']          = 'activity';
                $item_arr['wall']          = (($arr['cid']) ? 0 : 1);
                $item_arr['contact-id']    = $contact['id'];
@@ -385,7 +428,7 @@ function event_store($arr) {
                $item_arr['body']          = format_event_bbcode($event);
 
 
-               $item_arr['object'] = '<object><type>' . xmlify(ACTIVITY_OBJ_EVENT) . '</type><title></title><id>' . xmlify($arr['uri']) . '</id>';
+               $item_arr['object']  = '<object><type>' . xmlify(ACTIVITY_OBJ_EVENT) . '</type><title></title><id>' . xmlify($arr['uri']) . '</id>';
                $item_arr['object'] .= '<content>' . xmlify(format_event_bbcode($event)) . '</content>';
                $item_arr['object'] .= '</object>' . "\n";
 
@@ -394,11 +437,11 @@ function event_store($arr) {
                $r = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1",
                        intval($arr['uid'])
                );
-               //if(count($r))
-               //      $plink = $a->get_baseurl() . '/display/' . $r[0]['nickname'] . '/' . $item_id;
+               //if (dbm::is_result($r))
+               //      $plink = App::get_baseurl() . '/display/' . $r[0]['nickname'] . '/' . $item_id;
 
 
-               if($item_id) {
+               if ($item_id) {
                        //q("UPDATE `item` SET `plink` = '%s', `event-id` = %d  WHERE `uid` = %d AND `id` = %d",
                        //      dbesc($plink),
                        //      intval($event['id']),
@@ -417,3 +460,485 @@ function event_store($arr) {
                return $item_id;
        }
 }
+
+function get_event_strings() {
+
+       // First day of the week (0 = Sunday)
+       $firstDay = get_pconfig(local_user(), 'system', 'first_day_of_week');
+       if ($firstDay === false) {
+               $firstDay = 0;
+       }
+
+       $i18n = array(
+                       "firstDay" => $firstDay,
+                       "allday"   => t("all-day"),
+
+                       "Sun" => t("Sun"),
+                       "Mon" => t("Mon"),
+                       "Tue" => t("Tue"),
+                       "Wed" => t("Wed"),
+                       "Thu" => t("Thu"),
+                       "Fri" => t("Fri"),
+                       "Sat" => t("Sat"),
+
+                       "Sunday"    => t("Sunday"),
+                       "Monday"    => t("Monday"),
+                       "Tuesday"   => t("Tuesday"),
+                       "Wednesday" => t("Wednesday"),
+                       "Thursday"  => t("Thursday"),
+                       "Friday"    => t("Friday"),
+                       "Saturday"  => t("Saturday"),
+
+                       "Jan" => t("Jan"),
+                       "Feb" => t("Feb"),
+                       "Mar" => t("Mar"),
+                       "Apr" => t("Apr"),
+                       "May" => t("May"),
+                       "Jun" => t("Jun"),
+                       "Jul" => t("Jul"),
+                       "Aug" => t("Aug"),
+                       "Sep" => t("Sept"),
+                       "Oct" => t("Oct"),
+                       "Nov" => t("Nov"),
+                       "Dec" => t("Dec"),
+
+                       "January"   => t("January"),
+                       "February"  => t("February"),
+                       "March"     => t("March"),
+                       "April"     => t("April"),
+                       "May"       => t("May"),
+                       "June"      => t("June"),
+                       "July"      => t("July"),
+                       "August"    => t("August"),
+                       "September" => t("September"),
+                       "October"   => t("October"),
+                       "November"  => t("November"),
+                       "December"  => t("December"),
+
+                       "today" => t("today"),
+                       "month" => t("month"),
+                       "week"  => t("week"),
+                       "day"   => t("day"),
+
+                       "noevent" => t("No events to display"),
+
+                       "dtstart_label"  => t("Starts:"),
+                       "dtend_label"    => t("Finishes:"),
+                       "location_label" => t("Location:")
+               );
+
+       return $i18n;
+}
+
+/**
+ * @brief Removes duplicated birthday events
+ *
+ * @param array $dates Array of possibly duplicated events
+ * @return array Cleaned events
+ * 
+ * @todo We should replace this with a separate update function if there is some time left
+ */
+function event_remove_duplicates($dates) {
+       $dates2 = array();
+
+       foreach ($dates AS $date) {
+               if ($date['type'] == 'birthday') {
+                       $dates2[$date['uid'] . "-" . $date['cid'] . "-" . $date['start']] = $date;
+               } else {
+                       $dates2[] = $date;
+               }
+       }
+       return $dates2;
+}
+
+/**
+ * @brief Get an event by its event ID
+ *
+ * @param type $owner_uid The User ID of the owner of the event
+ * @param type $event_params An assoziative array with
+ *     int 'event_id' => The ID of the event in the event table
+ * @param type $sql_extra
+ * @return array Query result
+ */
+function event_by_id($owner_uid = 0, $event_params, $sql_extra = '') {
+       // ownly allow events if there is a valid owner_id
+       if ($owner_uid == 0) {
+               return;
+       }
+
+       // Query for the event by event id
+       $r = q("SELECT `event`.*, `item`.`id` AS `itemid`,`item`.`plink`,
+                       `item`.`author-name`, `item`.`author-avatar`, `item`.`author-link` FROM `event`
+               LEFT JOIN `item` ON `item`.`event-id` = `event`.`id` AND `item`.`uid` = `event`.`uid`
+               WHERE `event`.`uid` = %d AND `event`.`id` = %d $sql_extra",
+               intval($owner_uid),
+               intval($event_params["event_id"])
+       );
+
+       if (dbm::is_result($r)) {
+               return event_remove_duplicates($r);
+       }
+}
+
+/**
+ * @brief Get all events in a specific timeframe
+ *
+ * @param int $owner_uid The User ID of the owner of the events
+ * @param array $event_params An assoziative array with
+ *     int 'ignored' =>
+ *     string 'start' => Start time of the timeframe
+ *     string 'finish' => Finish time of the timeframe
+ *     string 'adjust_start' =>
+ *     string 'adjust_start' =>
+ *
+ * @param string $sql_extra Additional sql conditions (e.g. permission request)
+ * @return array Query results
+ */
+function events_by_date($owner_uid = 0, $event_params, $sql_extra = '') {
+       // Only allow events if there is a valid owner_id
+       if ($owner_uid == 0) {
+               return;
+       }
+
+       // Query for the event by date
+       $r = q("SELECT `event`.*, `item`.`id` AS `itemid`,`item`.`plink`,
+                               `item`.`author-name`, `item`.`author-avatar`, `item`.`author-link` FROM `event`
+                       LEFT JOIN `item` ON `item`.`event-id` = `event`.`id` AND `item`.`uid` = `event`.`uid`
+                       WHERE `event`.`uid` = %d AND event.ignore = %d
+                       AND ((`adjust` = 0 AND (`finish` >= '%s' OR (nofinish AND start >= '%s')) AND `start` <= '%s')
+                       OR  (`adjust` = 1 AND (`finish` >= '%s' OR (nofinish AND start >= '%s')) AND `start` <= '%s'))
+                       $sql_extra ",
+                       intval($owner_uid),
+                       intval($event_params["ignored"]),
+                       dbesc($event_params["start"]),
+                       dbesc($event_params["start"]),
+                       dbesc($event_params["finish"]),
+                       dbesc($event_params["adjust_start"]),
+                       dbesc($event_params["adjust_start"]),
+                       dbesc($event_params["adjust_finish"])
+       );
+
+       if (dbm::is_result($r)) {
+               return event_remove_duplicates($r);
+       }
+}
+
+/**
+ * @brief Convert an array query results in an arry which could be used by the events template
+ *
+ * @param array $arr Event query array
+ * @return array Event array for the template
+ */
+function process_events($arr) {
+       $events=array();
+
+       $last_date = '';
+       $fmt = t('l, F j');
+       if (count($arr)) {
+               foreach ($arr as $rr) {
+
+                       $j = (($rr['adjust']) ? datetime_convert('UTC', date_default_timezone_get(), $rr['start'], 'j') : datetime_convert('UTC', 'UTC', $rr['start'], 'j'));
+                       $d = (($rr['adjust']) ? datetime_convert('UTC', date_default_timezone_get(), $rr['start'], $fmt) : datetime_convert('UTC', 'UTC', $rr['start'], $fmt));
+                       $d = day_translate($d);
+
+                       $start = (($rr['adjust']) ? datetime_convert('UTC', date_default_timezone_get(), $rr['start'], 'c') : datetime_convert('UTC', 'UTC', $rr['start'], 'c'));
+                       if ($rr['nofinish']) {
+                               $end = null;
+                       } else {
+                               $end = (($rr['adjust']) ? datetime_convert('UTC', date_default_timezone_get(), $rr['finish'], 'c') : datetime_convert('UTC', 'UTC', $rr['finish'], 'c'));
+                       }
+
+                       $is_first = ($d !== $last_date);
+
+                       $last_date = $d;
+
+                       // Show edit and drop actions only if the user is the owner of the event and the event
+                       // is a real event (no bithdays)
+                       if (local_user() && local_user() == $rr['uid'] && $rr['type'] == 'event') {
+                               $edit = ((! $rr['cid']) ? array(App::get_baseurl() . '/events/event/' . $rr['id'], t('Edit event'), '', '') : null);
+                               $drop = array(App::get_baseurl() . '/events/drop/' . $rr['id'], t('Delete event'), '', '');
+                       }
+
+                       $title = strip_tags(html_entity_decode(bbcode($rr['summary']), ENT_QUOTES, 'UTF-8'));
+                       if (! $title) {
+                               list($title, $_trash) = explode("<br", bbcode($rr['desc']), 2);
+                               $title = strip_tags(html_entity_decode($title, ENT_QUOTES, 'UTF-8'));
+                       }
+
+                       $html = format_event_html($rr);
+                       $rr['desc'] = bbcode($rr['desc']);
+                       $rr['location'] = bbcode($rr['location']);
+                       $events[] = array(
+                               'id'     => $rr['id'],
+                               'start'  => $start,
+                               'end'    => $end,
+                               'allDay' => false,
+                               'title'  => $title,
+
+                               'j'        => $j,
+                               'd'        => $d,
+                               'edit'     => $edit,
+                               'drop'     => $drop,
+                               'is_first' => $is_first,
+                               'item'     => $rr,
+                               'html'     => $html,
+                               'plink'    => array($rr['plink'], t('link to source'), '', ''),
+                       );
+               }
+       }
+
+       return $events;
+}
+
+/**
+ * @brief Format event to export format (ical/csv)
+ *
+ * @param array $events Query result for events
+ * @param string $format The output format (ical/csv)
+ * @param string $timezone The timezone of the user (not implemented yet)
+ *
+ * @return string Content according to selected export format
+ */
+function event_format_export ($events, $format = 'ical', $timezone) {
+       if (! ((is_array($events)) && count($events))) {
+               return;
+       }
+
+       switch ($format) {
+               // Format the exported data as a CSV file
+               case "csv":
+                       header("Content-type: text/csv");
+                       $o = '"Subject", "Start Date", "Start Time", "Description", "End Date", "End Time", "Location"' . PHP_EOL;
+
+                       foreach ($events as $event) {
+                               /// @todo The time / date entries don't include any information about the
+                               /// timezone the event is scheduled in :-/
+                               $tmp1 = strtotime($event['start']);
+                               $tmp2 = strtotime($event['finish']);
+                               $time_format = "%H:%M:%S";
+                               $date_format = "%Y-%m-%d";
+
+                               $o .= '"' . $event['summary'] . '", "' . strftime($date_format, $tmp1) .
+                                       '", "' . strftime($time_format, $tmp1) . '", "' . $event['desc'] .
+                                       '", "' . strftime($date_format, $tmp2) .
+                                       '", "' . strftime($time_format, $tmp2) .
+                                       '", "' . $event['location'] . '"' . PHP_EOL;
+                       }
+                       break;
+
+               // Format the exported data as a ics file
+               case "ical":
+                       header("Content-type: text/ics");
+                       $o = 'BEGIN:VCALENDAR' . PHP_EOL
+                               . 'VERSION:2.0' . PHP_EOL
+                               . 'PRODID:-//friendica calendar export//0.1//EN' . PHP_EOL;
+                       ///  @todo include timezone informations in cases were the time is not in UTC
+                       //  see http://tools.ietf.org/html/rfc2445#section-4.8.3
+                       //              . 'BEGIN:VTIMEZONE' . PHP_EOL
+                       //              . 'TZID:' . $timezone . PHP_EOL
+                       //              . 'END:VTIMEZONE' . PHP_EOL;
+                       //  TODO instead of PHP_EOL CRLF should be used for long entries
+                       //       but test your solution against http://icalvalid.cloudapp.net/
+                       //       also long lines SHOULD be split at 75 characters length
+                       foreach ($events as $event) {
+
+                               if ($event['adjust'] == 1) {
+                                       $UTC = 'Z';
+                               } else {
+                                       $UTC = '';
+                               }
+                               $o .= 'BEGIN:VEVENT' . PHP_EOL;
+
+                               if ($event['start']) {
+                                       $tmp = strtotime($event['start']);
+                                       $dtformat = "%Y%m%dT%H%M%S" . $UTC;
+                                       $o .= 'DTSTART:' . strftime($dtformat, $tmp) . PHP_EOL;
+                               }
+
+                               if (!$event['nofinish']) {
+                                       $tmp = strtotime($event['finish']);
+                                       $dtformat = "%Y%m%dT%H%M%S" . $UTC;
+                                       $o .= 'DTEND:' . strftime($dtformat, $tmp) . PHP_EOL;
+                               }
+
+                               if ($event['summary']) {
+                                       $tmp = $event['summary'];
+                                       $tmp = str_replace(PHP_EOL, PHP_EOL . ' ', $tmp);
+                                       $tmp = addcslashes($tmp, ',;');
+                                       $o .= 'SUMMARY:' . $tmp . PHP_EOL;
+                               }
+
+                               if ($event['desc']) {
+                                       $tmp = $event['desc'];
+                                       $tmp = str_replace(PHP_EOL, PHP_EOL . ' ', $tmp);
+                                       $tmp = addcslashes($tmp, ',;');
+                                       $o .= 'DESCRIPTION:' . $tmp . PHP_EOL;
+                               }
+
+                               if ($event['location']) {
+                                       $tmp = $event['location'];
+                                       $tmp = str_replace(PHP_EOL, PHP_EOL . ' ', $tmp);
+                                       $tmp = addcslashes($tmp, ',;');
+                                       $o .= 'LOCATION:' . $tmp . PHP_EOL;
+                               }
+
+                               $o .= 'END:VEVENT' . PHP_EOL;
+                               $o .= PHP_EOL;
+                       }
+
+                       $o .= 'END:VCALENDAR' . PHP_EOL;
+                       break;
+       }
+
+       return $o;
+}
+
+/**
+ * @brief Get all events for a user ID
+ *
+ *    The query for events is done permission sensitive
+ *    If the user is the owner of the calendar he/she
+ *    will get all of his/her available events.
+ *    If the user is only a visitor only the public events will
+ *    be available
+ *
+ * @param int $uid The user ID
+ * @param int $sql_extra Additional sql conditions for permission
+ *
+ * @return array Query results
+ */
+function events_by_uid($uid = 0, $sql_extra = '') {
+       if ($uid == 0) {
+               return;
+       }
+
+       // The permission condition if no condition was transmitted
+       if ($sql_extra == '') {
+               $sql_extra = " AND `allow_cid` = '' AND `allow_gid` = '' ";
+       }
+
+       // Does the user who requests happen to be the owner of the events
+       // requested? then show all of your events, otherwise only those that
+       // don't have limitations set in allow_cid and allow_gid
+       if (local_user() == $uid) {
+               $r = q("SELECT `start`, `finish`, `adjust`, `summary`, `desc`, `location`, `nofinish`
+                       FROM `event` WHERE `uid`= %d AND `cid` = 0 ",
+                       intval($uid)
+               );
+       } else {
+               $r = q("SELECT `start`, `finish`, `adjust`, `summary`, `desc`, `location`, `nofinish`
+                       FROM `event` WHERE `uid`= %d AND `cid` = 0 $sql_extra ",
+                       intval($uid)
+               );
+       }
+
+       if (dbm::is_result($r)) {
+               return $r;
+       }
+}
+
+/**
+ *
+ * @param int $uid The user ID
+ * @param string $format Output format (ical/csv)
+ * @return array With the results
+ *     bool 'success' => True if the processing was successful
+ *     string 'format' => The output format
+ *     string 'extension' => The file extension of the output format
+ *     string 'content' => The formatted output content
+ *
+ * @todo Respect authenticated users with events_by_uid()
+ */
+function event_export($uid, $format = 'ical') {
+
+       $process = false;
+
+       // We are allowed to show events
+       // get the timezone the user is in
+       $r = q("SELECT `timezone` FROM `user` WHERE `uid` = %d LIMIT 1", intval($uid));
+       if (dbm::is_result($r)) {
+               $timezone = $r[0]['timezone'];
+       }
+
+       // Get all events which are owned by a uid (respects permissions);
+       $events = events_by_uid($uid);
+
+       // We have the events that are available for the requestor
+       // now format the output according to the requested format
+       if (count($events)) {
+               $res = event_format_export($events, $format, $timezone);
+       }
+
+       // If there are results the precess was successfull
+       if (x($res)) {
+               $process = true;
+       }
+
+       // Get the file extension for the format
+       switch ($format) {
+               case "ical":
+                       $file_ext = "ics";
+                       break;
+
+               case "csv":
+                       $file_ext = "csv";
+                       break;
+
+               default:
+                       $file_ext = "";
+       }
+
+       $arr = array(
+               'success'   => $process,
+               'format'    => $format,
+               'extension' => $file_ext,
+               'content'   => $res,
+       );
+
+       return $arr;
+}
+
+/**
+ * @brief Get the events widget
+ *
+ * @return string Formated html of the evens widget
+ */
+function widget_events() {
+       $a = get_app();
+
+       $owner_uid = $a->data['user']['uid'];
+       // $a->data is only available if the profile page is visited. If the visited page is not part
+       // of the profile page it should be the personal /events page. So we can use $a->user
+       $user = ($a->data['user']['nickname'] ? $a->data['user']['nickname'] : $a->user['nickname']);
+
+
+       // The permission testing is a little bit tricky because we have to respect many cases
+
+       // It's not the private events page (we don't get the $owner_uid for /events)
+       if (! local_user() && ! $owner_uid) {
+               return;
+       }
+
+       // Cal logged in user (test permission at foreign profile page)
+       // If the $owner uid is available we know it is part of one of the profile pages (like /cal)
+       // So we have to test if if it's the own profile page of the logged in user
+       // or a foreign one. For foreign profile pages we need to check if the feature
+       // for exporting the cal is enabled (otherwise the widget would appear for logged in users
+       // on foreigen profile pages even if the widget is disabled)
+       if (intval($owner_uid) && local_user() !== $owner_uid && ! feature_enabled($owner_uid, "export_calendar")) {
+               return;
+       }
+
+       // If it's a kind of profile page (intval($owner_uid)) return if the user not logged in and
+       // export feature isn't enabled
+       if (intval($owner_uid) && ! local_user() && ! feature_enabled($owner_uid, "export_calendar")) {
+               return;
+       }
+
+       return replace_macros(get_markup_template("events_aside.tpl"), array(
+               '$etitle' => t("Export"),
+               '$export_ical' => t("Export calendar as ical"),
+               '$export_csv' => t("Export calendar as csv"),
+               '$user' => $user
+       ));
+}