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505 lines
19 KiB
505 lines
19 KiB
<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Import attendance sessions class.
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*
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* @package mod_attendance
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* @author Chris Wharton <chriswharton@catalyst.net.nz>
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* @copyright 2017 Catalyst IT
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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namespace mod_attendance\import;
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defined('MOODLE_INTERNAL') || die();
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use csv_import_reader;
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use mod_attendance_notifyqueue;
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use mod_attendance_structure;
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use stdClass;
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/**
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* Import attendance sessions.
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*
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* @package mod_attendance
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* @author Chris Wharton <chriswharton@catalyst.net.nz>
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* @copyright 2017 Catalyst IT
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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class sessions {
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/** @var string $error The errors message from reading the xml */
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protected $error = '';
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/** @var array $sessions The sessions info */
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protected $sessions = array();
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/** @var array $mappings The mappings info */
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protected $mappings = array();
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/** @var int The id of the csv import */
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protected $importid = 0;
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/** @var csv_import_reader|null $importer */
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protected $importer = null;
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/** @var array $foundheaders */
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protected $foundheaders = array();
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/** @var bool $useprogressbar Control whether importing should use progress bars or not. */
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protected $useprogressbar = false;
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/** @var \core\progress\display_if_slow|null $progress The progress bar instance. */
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protected $progress = null;
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/**
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* Store an error message for display later
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*
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* @param string $msg
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*/
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public function fail($msg) {
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$this->error = $msg;
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return false;
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}
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/**
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* Get the CSV import id
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*
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* @return string The import id.
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*/
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public function get_importid() {
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return $this->importid;
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}
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/**
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* Get the list of headers required for import.
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*
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* @return array The headers (lang strings)
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*/
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public static function list_required_headers() {
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return array(
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get_string('course', 'attendance'),
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get_string('groups', 'attendance'),
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get_string('sessiondate', 'attendance'),
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get_string('from', 'attendance'),
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get_string('to', 'attendance'),
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get_string('description', 'attendance'),
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get_string('repeaton', 'attendance'),
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get_string('repeatevery', 'attendance'),
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get_string('repeatuntil', 'attendance'),
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get_string('studentscanmark', 'attendance'),
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get_string('passwordgrp', 'attendance'),
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get_string('randompassword', 'attendance'),
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get_string('subnet', 'attendance'),
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get_string('automark', 'attendance'),
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get_string('autoassignstatus', 'attendance'),
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get_string('absenteereport', 'attendance'),
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get_string('preventsharedip', 'attendance'),
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get_string('preventsharediptime', 'attendance'),
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get_string('calendarevent', 'attendance'),
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get_string('includeqrcode', 'attendance'),
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);
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}
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/**
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* Get the list of headers found in the import.
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*
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* @return array The found headers (names from import)
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*/
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public function list_found_headers() {
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return $this->foundheaders;
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}
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/**
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* Read the data from the mapping form.
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*
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* @param array $data The mapping data.
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*/
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protected function read_mapping_data($data) {
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if ($data) {
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return array(
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'course' => $data->header0,
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'groups' => $data->header1,
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'sessiondate' => $data->header2,
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'from' => $data->header3,
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'to' => $data->header4,
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'description' => $data->header5,
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'repeaton' => $data->header6,
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'repeatevery' => $data->header7,
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'repeatuntil' => $data->header8,
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'studentscanmark' => $data->header9,
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'passwordgrp' => $data->header10,
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'randompassword' => $data->header11,
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'subnet' => $data->header12,
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'automark' => $data->header13,
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'autoassignstatus' => $data->header14,
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'absenteereport' => $data->header15,
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'preventsharedip' => $data->header16,
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'preventsharediptime' => $data->header17,
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'calendarevent' => $data->header18,
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'includeqrcode' => $data->header19
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);
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} else {
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return array(
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'course' => 0,
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'groups' => 1,
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'sessiondate' => 2,
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'from' => 3,
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'to' => 4,
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'description' => 5,
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'repeaton' => 6,
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'repeatevery' => 7,
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'repeatuntil' => 8,
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'studentscanmark' => 9,
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'passwordgrp' => 10,
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'randompassword' => 11,
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'subnet' => 12,
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'automark' => 13,
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'autoassignstatus' => 14,
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'absenteereport' => 15,
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'preventsharedip' => 16,
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'preventsharediptime' => 17,
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'calendarevent' => 18,
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'includeqrcode' => 19
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);
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}
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}
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/**
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* Get the a column from the imported data.
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*
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* @param array $row The imported raw row
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* @param int $index The column index we want
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* @return string The column data.
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*/
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protected function get_column_data($row, $index) {
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if ($index < 0) {
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return '';
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}
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return isset($row[$index]) ? $row[$index] : '';
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}
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/**
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* Constructor - parses the raw text for sanity.
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*
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* @param string $text The raw csv text.
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* @param string $encoding The encoding of the csv file.
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* @param string $delimiter The specified delimiter for the file.
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* @param string $importid The id of the csv import.
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* @param array $mappingdata The mapping data from the import form.
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* @param bool $useprogressbar Whether progress bar should be displayed, to avoid html output on CLI.
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*/
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public function __construct($text = null, $encoding = null, $delimiter = null, $importid = 0,
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$mappingdata = null, $useprogressbar = false) {
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global $CFG;
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require_once($CFG->libdir . '/csvlib.class.php');
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$pluginconfig = get_config('attendance');
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$type = 'sessions';
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if (! $importid) {
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if ($text === null) {
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return;
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}
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$this->importid = csv_import_reader::get_new_iid($type);
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$this->importer = new csv_import_reader($this->importid, $type);
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if (! $this->importer->load_csv_content($text, $encoding, $delimiter)) {
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$this->fail(get_string('invalidimportfile', 'attendance'));
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$this->importer->cleanup();
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return;
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}
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} else {
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$this->importid = $importid;
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$this->importer = new csv_import_reader($this->importid, $type);
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}
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if (! $this->importer->init()) {
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$this->fail(get_string('invalidimportfile', 'attendance'));
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$this->importer->cleanup();
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return;
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}
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$this->foundheaders = $this->importer->get_columns();
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$this->useprogressbar = $useprogressbar;
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$domainid = 1;
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$sessions = array();
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while ($row = $this->importer->next()) {
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// This structure mimics what the UI form returns.
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$mapping = $this->read_mapping_data($mappingdata);
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$session = new stdClass();
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$session->course = $this->get_column_data($row, $mapping['course']);
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if (empty($session->course)) {
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\mod_attendance_notifyqueue::notify_problem(get_string('error:sessioncourseinvalid', 'attendance'));
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continue;
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}
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// Handle multiple group assignments per session. Expect semicolon separated group names.
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$groups = $this->get_column_data($row, $mapping['groups']);
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if (! empty($groups)) {
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$session->groups = explode(';', $groups);
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$session->sessiontype = \mod_attendance_structure::SESSION_GROUP;
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} else {
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$session->sessiontype = \mod_attendance_structure::SESSION_COMMON;
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}
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// Expect standardised date format, eg YYYY-MM-DD.
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$sessiondate = strtotime($this->get_column_data($row, $mapping['sessiondate']));
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if ($sessiondate === false) {
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\mod_attendance_notifyqueue::notify_problem(get_string('error:sessiondateinvalid', 'attendance'));
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continue;
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}
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$session->sessiondate = $sessiondate;
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// Expect standardised time format, eg HH:MM.
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$from = $this->get_column_data($row, $mapping['from']);
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if (empty($from)) {
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\mod_attendance_notifyqueue::notify_problem(get_string('error:sessionstartinvalid', 'attendance'));
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continue;
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}
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$from = explode(':', $from);
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$session->sestime['starthour'] = $from[0];
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$session->sestime['startminute'] = $from[1];
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$to = $this->get_column_data($row, $mapping['to']);
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if (empty($to)) {
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\mod_attendance_notifyqueue::notify_problem(get_string('error:sessionendinvalid', 'attendance'));
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continue;
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}
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$to = explode(':', $to);
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$session->sestime['endhour'] = $to[0];
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$session->sestime['endminute'] = $to[1];
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// Wrap the plain text description in html tags.
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$session->sdescription['text'] = '<p>' . $this->get_column_data($row, $mapping['description']) . '</p>';
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$session->sdescription['format'] = FORMAT_HTML;
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$session->sdescription['itemid'] = 0;
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$session->passwordgrp = $this->get_column_data($row, $mapping['passwordgrp']);
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$session->subnet = $this->get_column_data($row, $mapping['subnet']);
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// Set session subnet restriction. Use the default activity level subnet if there isn't one set for this session.
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if (empty($session->subnet)) {
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$session->usedefaultsubnet = '1';
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} else {
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$session->usedefaultsubnet = '';
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}
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if ($mapping['studentscanmark'] == -1) {
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$session->studentscanmark = $pluginconfig->studentscanmark_default;
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} else {
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$session->studentscanmark = $this->get_column_data($row, $mapping['studentscanmark']);
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}
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if ($mapping['randompassword'] == -1) {
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$session->randompassword = $pluginconfig->randompassword_default;
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} else {
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$session->randompassword = $this->get_column_data($row, $mapping['randompassword']);
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}
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if ($mapping['automark'] == -1) {
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$session->automark = $pluginconfig->automark_default;
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} else {
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$session->automark = $this->get_column_data($row, $mapping['automark']);
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}
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if ($mapping['autoassignstatus'] == -1) {
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$session->autoassignstatus = $pluginconfig->autoassignstatus;
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} else {
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$session->autoassignstatus = $this->get_column_data($row, $mapping['autoassignstatus']);
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}
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if ($mapping['absenteereport'] == -1) {
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$session->absenteereport = $pluginconfig->absenteereport_default;
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} else {
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$session->absenteereport = $this->get_column_data($row, $mapping['absenteereport']);
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}
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if ($mapping['preventsharedip'] == -1) {
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$session->preventsharedip = $pluginconfig->preventsharedip;
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} else {
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$session->preventsharedip = $this->get_column_data($row, $mapping['preventsharedip']);
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}
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if ($mapping['preventsharediptime'] == -1) {
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$session->preventsharediptime = $pluginconfig->preventsharediptime;
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} else {
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$session->preventsharediptime = $this->get_column_data($row, $mapping['preventsharediptime']);
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}
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if ($mapping['includeqrcode'] == -1) {
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$session->includeqrcode = $pluginconfig->includeqrcode_default;
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} else {
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$session->includeqrcode = $this->get_column_data($row, $mapping['includeqrcode']);
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}
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$session->statusset = 0;
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$sessions[] = $session;
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}
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$this->sessions = $sessions;
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$this->importer->close();
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if ($this->sessions == null) {
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$this->fail(get_string('invalidimportfile', 'attendance'));
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return;
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} else {
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// We are calling from browser, display progress bar.
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if ($this->useprogressbar === true) {
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$this->progress = new \core\progress\display_if_slow(get_string('processingfile', 'attendance'));
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$this->progress->start_html();
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} else {
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// Avoid html output on CLI scripts.
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$this->progress = new \core\progress\none();
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}
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$this->progress->start_progress('', count($this->sessions));
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raise_memory_limit(MEMORY_EXTRA);
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$this->progress->end_progress();
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}
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}
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/**
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* Get parse errors.
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*
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* @return array of errors from parsing the xml.
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*/
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public function get_error() {
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return $this->error;
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}
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/**
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* Create sessions using the CSV data.
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*
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* @return void
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*/
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public function import() {
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global $DB;
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// Count of sessions added.
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$okcount = 0;
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foreach ($this->sessions as $session) {
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$groupids = array();
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// Check course shortname matches.
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if ($DB->record_exists('course', array(
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'shortname' => $session->course
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))) {
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// Get course.
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$course = $DB->get_record('course', array(
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'shortname' => $session->course
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), '*', MUST_EXIST);
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// Check course has activities.
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if ($DB->record_exists('attendance', array(
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'course' => $course->id
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))) {
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// Translate group names to group IDs. They are unique per course.
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if ($session->sessiontype === \mod_attendance_structure::SESSION_GROUP) {
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foreach ($session->groups as $groupname) {
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$gid = groups_get_group_by_name($course->id, $groupname);
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if ($gid === false) {
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\mod_attendance_notifyqueue::notify_problem(get_string('sessionunknowngroup',
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'attendance', $groupname));
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} else {
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$groupids[] = $gid;
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}
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}
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$session->groups = $groupids;
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}
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// Get activities in course.
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$activities = $DB->get_recordset('attendance', array(
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'course' => $course->id
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), 'id', 'id');
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foreach ($activities as $activity) {
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// Build the session data.
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$cm = get_coursemodule_from_instance('attendance', $activity->id, $course->id);
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if (!empty($cm->deletioninprogress)) {
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// Don't do anything if this attendance is in recycle bin.
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continue;
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}
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$att = new mod_attendance_structure($activity, $cm, $course);
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$sessions = attendance_construct_sessions_data_for_add($session, $att);
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foreach ($sessions as $index => $sess) {
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// Check for duplicate sessions.
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if ($this->session_exists($sess)) {
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mod_attendance_notifyqueue::notify_message(get_string('sessionduplicate', 'attendance', (array(
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'course' => $session->course,
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'activity' => $cm->name
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))));
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unset($sessions[$index]);
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} else {
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$okcount ++;
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}
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}
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if (! empty($sessions)) {
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$att->add_sessions($sessions);
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}
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}
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$activities->close();
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} else {
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mod_attendance_notifyqueue::notify_problem(get_string('error:coursehasnoattendance',
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'attendance', $session->course));
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}
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} else {
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mod_attendance_notifyqueue::notify_problem(get_string('error:coursenotfound', 'attendance', $session->course));
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}
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}
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$message = get_string('sessionsgenerated', 'attendance', $okcount);
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if ($okcount < 1) {
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mod_attendance_notifyqueue::notify_message($message);
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} else {
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mod_attendance_notifyqueue::notify_success($message);
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}
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// Trigger a sessions imported event.
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$event = \mod_attendance\event\sessions_imported::create(array(
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'objectid' => 0,
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'context' => \context_system::instance(),
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'other' => array(
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'count' => $okcount
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)
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));
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$event->trigger();
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}
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/**
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* Check if an identical session exists.
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*
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* @param stdClass $session
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* @return boolean
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*/
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private function session_exists(stdClass $session) {
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global $DB;
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$check = clone $session;
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// Remove the properties that aren't useful to check.
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unset($check->description);
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unset($check->descriptionitemid);
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unset($check->timemodified);
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$check = (array) $check;
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if ($DB->record_exists('attendance_sessions', $check)) {
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return true;
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}
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return false;
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}
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}
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