timetable/block_timetable.php

<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**
 * Newblock block caps.
 *
 * @package    block_timetable
 * @copyright  Daniel Neis <danielneis@gmail.com>
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

defined('MOODLE_INTERNAL') || die();

use block_timetable\timetable;

class block_timetable extends block_base {

    function init() {
        $this->title = get_string('pluginname', 'block_timetable');
    }

    function get_content() {
        global $CFG, $OUTPUT;

        if ($this->content !== null) {
            return $this->content;
        }

        if (empty($this->instance)) {
            $this->content = '';
            return $this->content;
        }

        $this->content = new stdClass();
        $this->content->items = array();
        $this->content->icons = array();
        $this->content->footer = 'Faecher<br>Lehrer<br>Raeume';

        // user/index.php expect course context, so get one if page has module context.
	$currentcontext = $this->page->context->get_course_context(false);


        if (! empty($this->config->text)) {
            $this->content->text = $this->config->text;
        }

        $this->content->text = '';
        if (empty($currentcontext)) {
            return $this->content;
        }
        if ($this->page->course->id == SITEID) {
            $this->content->text .= "site context";
	}
        if ($this->page->course->idnumber && $this->page->course->shortname) {
		$class = $this->page->course->shortname;
		$class = 'TG11/3';
            $this->content->text .= "Stundenplan der Klasse $class<br>";
	} //elseif ($USER->

	//$context_id = get_context_instance_by_id($course->id);
	//echo "Contextid = $contextid->contextlevel\n";

	/*
	// Verbindung zu localhost auf port 3307
	$mysqli = new mysqli('mistral:3307', 'timetable_user1', 'd7jzRYpfGS3OkIpHCBEE','timetable');
	if ($mysqli->connect_errno) {
	     $this->content->text .= 'Verbindung schlug fehl: ' . $mysqli->connect_errno;
	}
	 */
	$period_max = get_config('timetable', 'numperiod');
	$table = new html_table();
	$table->cellspacing = 0;
	$table->cellpadding = 0;
	$table->attributes['cellpadding'] = '0';
	$table->attributes['class'] = 'minicalendar calendartable';
//	$table->align = array('right','center','center','center','center','center');
//	$table->size = array('50', '50');
	$table->head = array('','Mo','Di', 'Mi' , 'Do', 'Fr');
	for ($i = 1; $i <= $period_max; $i++) {
		$tablerow = new \html_table_row();
		$tablerow->cells[] = new html_table_cell($i);
		for ($k = 1; $k <= 5; $k++) {
			//$cell = new html_table_cell("$i+$k");
			$cell = new html_table_cell("");
			$cell->abbr = "";
//			$cell->attributes['class'] = 'day text-center';
			$tablerow->cells[] = $cell;
			//$tablerow->cells[] = '<td class="day text-center">'+"$i+$k</td>";
			//$tablerow->cells[] = new html_table_cell("$i+$k");
		}
		$table->data[] = $tablerow;
	}
	//$sql = "Select * from lesson where teacher = 'Hbr' and not (mid(week, 36, 1) = '0')";
	$sql = "teacher = 'Hbr' and not (mid(week, 26, 1) = '0')";
	if ($class) {
		//$sql = "Select * from lesson where class = '$class' and not (mid(week, 37, 1) = '0')";
		$sql = "class = '$class' and not (mid(week, 26, 1) = '0')";
	}
	global $DB;
	if ($result = $DB->get_records_select('timetable_lesson',$sql)) {
		foreach ($result as $lesson) {
			if ($lesson->period < $period_max) {
				if ($table->data[$lesson->period-1]->cells[$lesson->day]->text)
				       $table->data[$lesson->period-1]->cells[$lesson->day]->text .= "<BR>";
				$table->data[$lesson->period-1]->cells[$lesson->day]->text .= $lesson->subject;
			}

		}
	} else {
		echo "get_records_select failed\n";
	}
	for ($i = 0; $i < $period_max; $i++) {
		for ($k = 1; $k <= 5; $k++) {
			if (!$table->data[$i]->cells[$k]->text) $table->data[$i]->cells[$k]->text = "-";
		}
	}

/*
	if (!$result = $mysqli->query($sql)) {
	    // Oh no! The query failed. 
	     $this->content->text .=  "Sorry, the website is experiencing problems.";
	}
	while ($lesson = $result->fetch_assoc()) {
//		if ($lesson['period']<5 && $lesson['day']<5);
		//$table->data[$lesson['period']-1]->cells[$lesson['day']]->text = $lesson['subject'];
		//$table->data[$lesson['period']-1]->cells[$lesson['day']]->text = $lesson['room'];
		$table->data[$lesson['period']-1]->cells[$lesson['day']]->text = $lesson['class'];
	}
 */	

	//$table->data = array($row1, $row2);
	$date = new DateTime();
	$monday = new DateTime();
	$friday = new DateTime();
	$week = $date->format("W");
	$dayofweek = $date->format('w')-1;
	
	$monday->sub(new DateInterval("P{$dayofweek}D"));
	$friday->add(new DateInterval("P".(4-$dayofweek)."D"));
	$this->content->text .= $monday->format('d.m') . " - " . $friday->format('d.m');
	$ttable = new timetable('class','TG11/3');
	$ttable->read_db($week);
	$this->content->text .= html_writer::start_tag('div', ['data-region' => 'calendar', 'class' => 'maincalendar']);	
	$this->content->text .= $ttable->print_table('subject');
	//$this->content->text .= html_writer::table($table);
	$this->content->text .= html_writer::end_tag('div');
	
	//$this->content->text .= file_get_contents("/var/www/plaene/25/c/mc00005.htm");
	//$mysqli->close();
        return $this->content;
    }

    // my moodle can only have SITEID and it's redundant here, so take it away
    public function applicable_formats() {
        return array('all' => false,
                     'site' => true,
                     'site-index' => true,
                     'course-view' => true, 
                     'course-view-social' => false,
                     'mod' => true, 
                     'mod-quiz' => false);
    }

    public function instance_allow_multiple() {
          return true;
    }

    function has_config() {return true;}

    public function cron() {
            mtrace( "Hey, my cron script is running" );
             
                 // do something
                  
                      return true;
    }
}