path: root/mod/cal.php

<?php

require_once('include/conversation.php');
require_once('include/bbcode.php');
require_once('include/datetime.php');
require_once('include/event.php');
require_once('include/items.php');
require_once('Contact.php');


function cal_init(&$a) {
	if((get_config('system','block_public')) && (! local_channel()) && (! remote_channel())) {
		return;
	}

	$o = '';

	if(argc() > 1) {
		$nick = argv(1);

		profile_load($a,$nick);

		$channelx = channelx_by_nick($nick);

		if(! $channelx)
			return;

		$a->data['channel'] = $channelx;

		$observer = $a->get_observer();
		$a->data['observer'] = $observer;

		$observer_xchan = (($observer) ? $observer['xchan_hash'] : '');

		head_set_icon($a->data['channel']['xchan_photo_s']);

		$a->page['htmlhead'] .= "<script> var ispublic = '" . t('everybody') . "'; var profile_uid = " . (($a->data['channel']) ? $a->data['channel']['channel_id'] : 0) . "; </script>" ;

	}

	return;
}



function cal_content(&$a) {

	$channel = null;

	if(argc() > 1) {
		$channel = channelx_by_nick(argv(1));
	}


	if(! $channel) {
		notice( t('Channel not found.') . EOL);
		return;
	}

	// since we don't currently have an event permission - use the stream permission

	if(! perm_is_allowed($channel['channel_id'], get_observer_hash(), 'view_stream')) {
		notice( t('Permissions denied.') . EOL);
		return;
	}

	$sql_extra = permissions_sql($channel['channel_id'],get_observer_hash(),'event');

	$first_day = get_pconfig(local_channel(),'system','cal_first_day');
	$first_day = (($first_day) ? $first_day : 0);

	$htpl = get_markup_template('event_head.tpl');
	$a->page['htmlhead'] .= replace_macros($htpl,array(
		'$baseurl' => z_root(),
		'$module_url' => '/cal/' . $channel['channel_address'],
		'$modparams' => 2,
		'$lang' => $a->language,
		'$first_day' => $first_day
	));

	$o = '';

	$tabs = profile_tabs($a, True, $channel['channel_address']);

	$mode = 'view';
	$y = 0;
	$m = 0;
	$ignored = ((x($_REQUEST,'ignored')) ? " and ignored = " . intval($_REQUEST['ignored']) . " "  : '');

	// logger('args: ' . print_r($a->argv,true));

	if(argc() > 3 && intval(argv(2)) && intval(argv(3))) {
		$mode = 'view';
		$y = intval(argv(2));
		$m = intval(argv(3));
	}
	if(argc() <= 3) {
		$mode = 'view';
		$event_id = argv(2);
	}

	if($mode == 'view') {

		/* edit/create form */
		if($event_id) {
			$r = q("SELECT * FROM `event` WHERE event_hash = '%s' AND `uid` = %d LIMIT 1",
				dbesc($event_id),
				intval($channel['channel_id'])
			);
			if(count($r))
				$orig_event = $r[0];
		}


		// Passed parameters overrides anything found in the DB
		if(!x($orig_event))
			$orig_event = array();



		$tz = date_default_timezone_get();
		if(x($orig_event))
			$tz = (($orig_event['adjust']) ? date_default_timezone_get() : 'UTC');

		$syear = datetime_convert('UTC', $tz, $sdt, 'Y');
		$smonth = datetime_convert('UTC', $tz, $sdt, 'm');
		$sday = datetime_convert('UTC', $tz, $sdt, 'd');
		$shour = datetime_convert('UTC', $tz, $sdt, 'H');
		$sminute = datetime_convert('UTC', $tz, $sdt, 'i');

		$stext = datetime_convert('UTC',$tz,$sdt);
		$stext = substr($stext,0,14) . "00:00";

		$fyear = datetime_convert('UTC', $tz, $fdt, 'Y');
		$fmonth = datetime_convert('UTC', $tz, $fdt, 'm');
		$fday = datetime_convert('UTC', $tz, $fdt, 'd');
		$fhour = datetime_convert('UTC', $tz, $fdt, 'H');
		$fminute = datetime_convert('UTC', $tz, $fdt, 'i');

		$ftext = datetime_convert('UTC',$tz,$fdt);
		$ftext = substr($ftext,0,14) . "00:00";

		$type = ((x($orig_event)) ? $orig_event['type'] : 'event');

		$f = get_config('system','event_input_format');
		if(! $f)
			$f = 'ymd';

		$catsenabled = feature_enabled($channel['channel_id'],'categories');


		$show_bd = perm_is_allowed($channel['channel_id'], get_observer_hash(), 'view_contacts');
		if(! $show_bd) {
			$sql_extra .= " and event.type != 'birthday' ";
		}


		$category = '';

		$thisyear = datetime_convert('UTC',date_default_timezone_get(),'now','Y');
		$thismonth = datetime_convert('UTC',date_default_timezone_get(),'now','m');
		if(! $y)
			$y = intval($thisyear);
		if(! $m)
			$m = intval($thismonth);

		// Put some limits on dates. The PHP date functions don't seem to do so well before 1900.
		// An upper limit was chosen to keep search engines from exploring links millions of years in the future. 

		if($y < 1901)
			$y = 1900;
		if($y > 2099)
			$y = 2100;

		$nextyear = $y;
		$nextmonth = $m + 1;
		if($nextmonth > 12) {
				$nextmonth = 1;
			$nextyear ++;
		}

		$prevyear = $y;
		if($m > 1)
			$prevmonth = $m - 1;
		else {
			$prevmonth = 12;
			$prevyear --;
		}
			
		$dim    = get_dim($y,$m);
		$start  = sprintf('%d-%d-%d %d:%d:%d',$y,$m,1,0,0,0);
		$finish = sprintf('%d-%d-%d %d:%d:%d',$y,$m,$dim,23,59,59);


		if (argv(2) === 'json'){
			if (x($_GET,'start'))	$start = $_GET['start'];
			if (x($_GET,'end'))	$finish = $_GET['end'];
		}

		$start  = datetime_convert('UTC','UTC',$start);
		$finish = datetime_convert('UTC','UTC',$finish);

		$adjust_start = datetime_convert('UTC', date_default_timezone_get(), $start);
		$adjust_finish = datetime_convert('UTC', date_default_timezone_get(), $finish);

		if (x($_GET,'id')){
		  	$r = q("SELECT event.*, item.plink, item.item_flags, item.author_xchan, item.owner_xchan
                                from event left join item on resource_id = event_hash where resource_type = 'event' and event.uid = %d and event.id = %d $sql_extra limit 1",
				intval($channel['channel_id']),
				intval($_GET['id'])
			);
		} 
		else {
			// fixed an issue with "nofinish" events not showing up in the calendar.
			// There's still an issue if the finish date crosses the end of month.
			// Noting this for now - it will need to be fixed here and in Friendica.
			// Ultimately the finish date shouldn't be involved in the query. 

			$r = q("SELECT event.*, item.plink, item.item_flags, item.author_xchan, item.owner_xchan
                              from event left join item on event_hash = resource_id 
				where resource_type = 'event' and event.uid = %d $ignored 
				AND (( adjust = 0 AND ( finish >= '%s' or nofinish = 1 ) AND start <= '%s' ) 
				OR  (  adjust = 1 AND ( finish >= '%s' or nofinish = 1 ) AND start <= '%s' )) $sql_extra ",
				intval($channel['channel_id']),
				dbesc($start),
				dbesc($finish),
				dbesc($adjust_start),
				dbesc($adjust_finish)
			);

		}

		$links = array();

		if($r) {
			xchan_query($r);
			$r = fetch_post_tags($r,true);

			$r = sort_by_date($r);
		}

		if($r) {
			foreach($r as $rr) {
				$j = (($rr['adjust']) ? datetime_convert('UTC',date_default_timezone_get(),$rr['start'], 'j') : datetime_convert('UTC','UTC',$rr['start'],'j'));
				if(! x($links,$j)) 
					$links[$j] = z_root() . '/' . $a->cmd . '#link-' . $j;
			}
		}

		$events=array();

		$last_date = '';
		$fmt = t('l, F j');

		if($r) {

			foreach($r 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;

				$edit = false;

				$drop = false;

				$title = strip_tags(html_entity_decode(bbcode($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'],
					'hash' => $rr['event_hash'],
					'start'=> $start,
					'end' => $end,
					'drop' => $drop,
					'allDay' => false,
					'title' => $title,
					
					'j' => $j,
					'd' => $d,
					'edit' => $edit,
					'is_first'=>$is_first,
					'item'=>$rr,
					'html'=>$html,
					'plink' => array($rr['plink'],t('Link to Source'),'',''),
				);


			}
		}
		
		if (argv(2) === 'json'){
			echo json_encode($events); killme();
		}
		
		// links: array('href', 'text', 'extra css classes', 'title')
		if (x($_GET,'id')){
			$tpl =  get_markup_template("event_cal.tpl");
		} 
		else {
			$tpl = get_markup_template("events_cal-js.tpl");
		}

		$nick = $channel['channel_address'];

		$o = replace_macros($tpl, array(
			'$baseurl'	=> z_root(),
			'$new_event'	=> array(z_root().'/cal',(($event_id) ? t('Edit Event') : t('Create Event')),'',''),
			'$previus'	=> array(z_root()."/cal/$nick/$prevyear/$prevmonth",t('Previous'),'',''),
			'$next'		=> array(z_root()."/cal/$nick/$nextyear/$nextmonth",t('Next'),'',''),
			'$export'	=> array(z_root()."/cal/$nick/$y/$m/export",t('Export'),'',''),
			'$calendar'	=> cal($y,$m,$links, ' eventcal'),
			'$events'	=> $events,
			'$upload'	=> t('Import'),
			'$submit'	=> t('Submit'),
			'$prev'		=> t('Previous'),
			'$next'		=> t('Next'),
			'$today'	=> t('Today'),
			'$form'		=> $form,
			'$expandform'	=> ((x($_GET,'expandform')) ? true : false),
			'$tabs'		=> $tabs
		));
		
		if (x($_GET,'id')){ echo $o; killme(); }
		
		return $o;
	}

}