MDL-67294 assignsubmission_file: Make sure record exists before updating
[moodle.git] / mod / assign / submission / file / locallib.php
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1<?php
2// This file is part of Moodle - http://moodle.org/
3//
4// Moodle is free software: you can redistribute it and/or modify
5// it under the terms of the GNU General Public License as published by
6// the Free Software Foundation, either version 3 of the License, or
7// (at your option) any later version.
8//
9// Moodle is distributed in the hope that it will be useful,
10// but WITHOUT ANY WARRANTY; without even the implied warranty of
11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12// GNU General Public License for more details.
13//
14// You should have received a copy of the GNU General Public License
15// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
16
17/**
18 * This file contains the definition for the library class for file submission plugin
19 *
20 * This class provides all the functionality for the new assign module.
21 *
22 * @package assignsubmission_file
23 * @copyright 2012 NetSpot {@link http://www.netspot.com.au}
24 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
25 */
26
bbd0e548 27defined('MOODLE_INTERNAL') || die();
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28
29// File areas for file submission assignment.
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30define('ASSIGNSUBMISSION_FILE_MAXSUMMARYFILES', 5);
31define('ASSIGNSUBMISSION_FILE_FILEAREA', 'submission_files');
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32
33/**
e5403f8c 34 * Library class for file submission plugin extending submission plugin base class
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35 *
36 * @package assignsubmission_file
37 * @copyright 2012 NetSpot {@link http://www.netspot.com.au}
38 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
39 */
40class assign_submission_file extends assign_submission_plugin {
41
42 /**
43 * Get the name of the file submission plugin
44 * @return string
45 */
46 public function get_name() {
47 return get_string('file', 'assignsubmission_file');
48 }
49
50 /**
51 * Get file submission information from the database
52 *
53 * @param int $submissionid
54 * @return mixed
55 */
56 private function get_file_submission($submissionid) {
57 global $DB;
58 return $DB->get_record('assignsubmission_file', array('submission'=>$submissionid));
59 }
60
61 /**
62 * Get the default setting for file submission plugin
63 *
64 * @param MoodleQuickForm $mform The form to add elements to
65 * @return void
66 */
67 public function get_settings(MoodleQuickForm $mform) {
68 global $CFG, $COURSE;
69
412a5602 70 if ($this->assignment->has_instance()) {
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71 $defaultmaxfilesubmissions = $this->get_config('maxfilesubmissions');
72 $defaultmaxsubmissionsizebytes = $this->get_config('maxsubmissionsizebytes');
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73 $defaultfiletypes = $this->get_config('filetypeslist');
74 } else {
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75 $defaultmaxfilesubmissions = get_config('assignsubmission_file', 'maxfiles');
76 $defaultmaxsubmissionsizebytes = get_config('assignsubmission_file', 'maxbytes');
c6b32acd 77 $defaultfiletypes = get_config('assignsubmission_file', 'filetypes');
797a70c0 78 }
c6b32acd 79 $defaultfiletypes = (string)$defaultfiletypes;
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80
81 $settings = array();
82 $options = array();
35e7ad6a 83 for ($i = 1; $i <= get_config('assignsubmission_file', 'maxfiles'); $i++) {
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84 $options[$i] = $i;
85 }
86
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87 $name = get_string('maxfilessubmission', 'assignsubmission_file');
88 $mform->addElement('select', 'assignsubmission_file_maxfiles', $name, $options);
89 $mform->addHelpButton('assignsubmission_file_maxfiles',
90 'maxfilessubmission',
91 'assignsubmission_file');
bbd0e548 92 $mform->setDefault('assignsubmission_file_maxfiles', $defaultmaxfilesubmissions);
a029b9af 93 $mform->hideIf('assignsubmission_file_maxfiles', 'assignsubmission_file_enabled', 'notchecked');
bbd0e548 94
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95 $choices = get_max_upload_sizes($CFG->maxbytes,
96 $COURSE->maxbytes,
97 get_config('assignsubmission_file', 'maxbytes'));
6d976f3f 98
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99 $settings[] = array('type' => 'select',
100 'name' => 'maxsubmissionsizebytes',
101 'description' => get_string('maximumsubmissionsize', 'assignsubmission_file'),
102 'options'=> $choices,
103 'default'=> $defaultmaxsubmissionsizebytes);
104
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105 $name = get_string('maximumsubmissionsize', 'assignsubmission_file');
106 $mform->addElement('select', 'assignsubmission_file_maxsizebytes', $name, $choices);
107 $mform->addHelpButton('assignsubmission_file_maxsizebytes',
108 'maximumsubmissionsize',
109 'assignsubmission_file');
bbd0e548 110 $mform->setDefault('assignsubmission_file_maxsizebytes', $defaultmaxsubmissionsizebytes);
a029b9af 111 $mform->hideIf('assignsubmission_file_maxsizebytes',
e5403f8c 112 'assignsubmission_file_enabled',
b0da618b 113 'notchecked');
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114
115 $name = get_string('acceptedfiletypes', 'assignsubmission_file');
9069c66e 116 $mform->addElement('filetypes', 'assignsubmission_file_filetypes', $name);
62e87ae4 117 $mform->addHelpButton('assignsubmission_file_filetypes', 'acceptedfiletypes', 'assignsubmission_file');
4044cad5 118 $mform->setDefault('assignsubmission_file_filetypes', $defaultfiletypes);
a029b9af 119 $mform->hideIf('assignsubmission_file_filetypes', 'assignsubmission_file_enabled', 'notchecked');
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120 }
121
122 /**
123 * Save the settings for file submission plugin
124 *
125 * @param stdClass $data
126 * @return bool
127 */
128 public function save_settings(stdClass $data) {
129 $this->set_config('maxfilesubmissions', $data->assignsubmission_file_maxfiles);
130 $this->set_config('maxsubmissionsizebytes', $data->assignsubmission_file_maxsizebytes);
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131
132 if (!empty($data->assignsubmission_file_filetypes)) {
133 $this->set_config('filetypeslist', $data->assignsubmission_file_filetypes);
134 } else {
135 $this->set_config('filetypeslist', '');
136 }
137
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138 return true;
139 }
140
141 /**
142 * File format options
143 *
144 * @return array
145 */
146 private function get_file_options() {
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147 $fileoptions = array('subdirs' => 1,
148 'maxbytes' => $this->get_config('maxsubmissionsizebytes'),
149 'maxfiles' => $this->get_config('maxfilesubmissions'),
847a4e21 150 'accepted_types' => $this->get_configured_typesets(),
151b0f94 151 'return_types' => (FILE_INTERNAL | FILE_CONTROLLED_LINK));
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152 if ($fileoptions['maxbytes'] == 0) {
153 // Use module default.
154 $fileoptions['maxbytes'] = get_config('assignsubmission_file', 'maxbytes');
155 }
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156 return $fileoptions;
157 }
158
159 /**
160 * Add elements to submission form
161 *
162 * @param mixed $submission stdClass|null
163 * @param MoodleQuickForm $mform
164 * @param stdClass $data
165 * @return bool
166 */
167 public function get_form_elements($submission, MoodleQuickForm $mform, stdClass $data) {
847a4e21 168 global $OUTPUT;
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169
170 if ($this->get_config('maxfilesubmissions') <= 0) {
171 return false;
172 }
173
174 $fileoptions = $this->get_file_options();
175 $submissionid = $submission ? $submission->id : 0;
176
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177 $data = file_prepare_standard_filemanager($data,
178 'files',
179 $fileoptions,
180 $this->assignment->get_context(),
181 'assignsubmission_file',
182 ASSIGNSUBMISSION_FILE_FILEAREA,
183 $submissionid);
3a5c3b3c 184 $mform->addElement('filemanager', 'files_filemanager', $this->get_name(), null, $fileoptions);
7e5be074 185
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186 return true;
187 }
188
189 /**
190 * Count the number of files
191 *
192 * @param int $submissionid
193 * @param string $area
194 * @return int
195 */
196 private function count_files($submissionid, $area) {
bbd0e548 197 $fs = get_file_storage();
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198 $files = $fs->get_area_files($this->assignment->get_context()->id,
199 'assignsubmission_file',
200 $area,
201 $submissionid,
202 'id',
203 false);
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204
205 return count($files);
206 }
207
208 /**
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209 * Save the files and trigger plagiarism plugin, if enabled,
210 * to scan the uploaded files via events trigger
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211 *
212 * @param stdClass $submission
213 * @param stdClass $data
214 * @return bool
215 */
216 public function save(stdClass $submission, stdClass $data) {
217 global $USER, $DB;
218
219 $fileoptions = $this->get_file_options();
220
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221 $data = file_postupdate_standard_filemanager($data,
222 'files',
223 $fileoptions,
224 $this->assignment->get_context(),
225 'assignsubmission_file',
226 ASSIGNSUBMISSION_FILE_FILEAREA,
227 $submission->id);
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228
229 $filesubmission = $this->get_file_submission($submission->id);
230
e5403f8c 231 // Plagiarism code event trigger when files are uploaded.
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232
233 $fs = get_file_storage();
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234 $files = $fs->get_area_files($this->assignment->get_context()->id,
235 'assignsubmission_file',
236 ASSIGNSUBMISSION_FILE_FILEAREA,
237 $submission->id,
238 'id',
239 false);
240
8ab7bb9f 241 $count = $this->count_files($submission->id, ASSIGNSUBMISSION_FILE_FILEAREA);
e5403f8c 242
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243 $params = array(
244 'context' => context_module::instance($this->assignment->get_course_module()->id),
d7f05ad4 245 'courseid' => $this->assignment->get_course()->id,
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246 'objectid' => $submission->id,
247 'other' => array(
248 'content' => '',
249 'pathnamehashes' => array_keys($files)
250 )
251 );
5cfa441b 252 if (!empty($submission->userid) && ($submission->userid != $USER->id)) {
f5928e78 253 $params['relateduserid'] = $submission->userid;
5cfa441b 254 }
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255 if ($this->assignment->is_blind_marking()) {
256 $params['anonymous'] = 1;
257 }
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258 $event = \assignsubmission_file\event\assessable_uploaded::create($params);
259 $event->set_legacy_files($files);
260 $event->trigger();
bbd0e548 261
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262 $groupname = null;
263 $groupid = 0;
264 // Get the group name as other fields are not transcribed in the logs and this information is important.
265 if (empty($submission->userid) && !empty($submission->groupid)) {
3112c220 266 $groupname = $DB->get_field('groups', 'name', array('id' => $submission->groupid), MUST_EXIST);
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267 $groupid = $submission->groupid;
268 } else {
269 $params['relateduserid'] = $submission->userid;
270 }
271
272 // Unset the objectid and other field from params for use in submission events.
273 unset($params['objectid']);
274 unset($params['other']);
275 $params['other'] = array(
276 'submissionid' => $submission->id,
277 'submissionattempt' => $submission->attemptnumber,
278 'submissionstatus' => $submission->status,
279 'filesubmissioncount' => $count,
280 'groupid' => $groupid,
281 'groupname' => $groupname
282 );
283
bbd0e548 284 if ($filesubmission) {
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285 $filesubmission->numfiles = $this->count_files($submission->id,
286 ASSIGNSUBMISSION_FILE_FILEAREA);
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287 $updatestatus = $DB->update_record('assignsubmission_file', $filesubmission);
288 $params['objectid'] = $filesubmission->id;
289
290 $event = \assignsubmission_file\event\submission_updated::create($params);
4781ff2e 291 $event->set_assign($this->assignment);
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292 $event->trigger();
293 return $updatestatus;
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294 } else {
295 $filesubmission = new stdClass();
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296 $filesubmission->numfiles = $this->count_files($submission->id,
297 ASSIGNSUBMISSION_FILE_FILEAREA);
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298 $filesubmission->submission = $submission->id;
299 $filesubmission->assignment = $this->assignment->get_instance()->id;
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300 $filesubmission->id = $DB->insert_record('assignsubmission_file', $filesubmission);
301 $params['objectid'] = $filesubmission->id;
302
303 $event = \assignsubmission_file\event\submission_created::create($params);
4781ff2e 304 $event->set_assign($this->assignment);
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305 $event->trigger();
306 return $filesubmission->id > 0;
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307 }
308 }
309
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310 /**
311 * Remove files from this submission.
312 *
313 * @param stdClass $submission The submission
314 * @return boolean
315 */
316 public function remove(stdClass $submission) {
52070868 317 global $DB;
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318 $fs = get_file_storage();
319
320 $fs->delete_area_files($this->assignment->get_context()->id,
321 'assignsubmission_file',
322 ASSIGNSUBMISSION_FILE_FILEAREA,
323 $submission->id);
8aaa2b5d 324
8aaa2b5d 325 $currentsubmission = $this->get_file_submission($submission->id);
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326 if ($currentsubmission) {
327 $currentsubmission->numfiles = 0;
328 $DB->update_record('assignsubmission_file', $currentsubmission);
329 }
8aaa2b5d 330
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331 return true;
332 }
333
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334 /**
335 * Produce a list of files suitable for export that represent this feedback or submission
336 *
337 * @param stdClass $submission The submission
1561a37c 338 * @param stdClass $user The user record - unused
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339 * @return array - return an array of files indexed by filename
340 */
2406815b 341 public function get_files(stdClass $submission, stdClass $user) {
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342 $result = array();
343 $fs = get_file_storage();
344
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345 $files = $fs->get_area_files($this->assignment->get_context()->id,
346 'assignsubmission_file',
347 ASSIGNSUBMISSION_FILE_FILEAREA,
348 $submission->id,
349 'timemodified',
350 false);
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351
352 foreach ($files as $file) {
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353 // Do we return the full folder path or just the file name?
354 if (isset($submission->exportfullpath) && $submission->exportfullpath == false) {
355 $result[$file->get_filename()] = $file;
356 } else {
357 $result[$file->get_filepath().$file->get_filename()] = $file;
358 }
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359 }
360 return $result;
361 }
362
363 /**
364 * Display the list of files in the submission status table
365 *
366 * @param stdClass $submission
367 * @param bool $showviewlink Set this to true if the list of files is long
368 * @return string
369 */
7ee1548a 370 public function view_summary(stdClass $submission, & $showviewlink) {
8ab7bb9f 371 $count = $this->count_files($submission->id, ASSIGNSUBMISSION_FILE_FILEAREA);
bbd0e548 372
e5403f8c 373 // Show we show a link to view all files for this plugin?
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374 $showviewlink = $count > ASSIGNSUBMISSION_FILE_MAXSUMMARYFILES;
375 if ($count <= ASSIGNSUBMISSION_FILE_MAXSUMMARYFILES) {
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376 return $this->assignment->render_area_files('assignsubmission_file',
377 ASSIGNSUBMISSION_FILE_FILEAREA,
378 $submission->id);
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379 } else {
380 return get_string('countfiles', 'assignsubmission_file', $count);
381 }
382 }
383
384 /**
385 * No full submission view - the summary contains the list of files and that is the whole submission
386 *
387 * @param stdClass $submission
388 * @return string
389 */
390 public function view(stdClass $submission) {
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391 return $this->assignment->render_area_files('assignsubmission_file',
392 ASSIGNSUBMISSION_FILE_FILEAREA,
393 $submission->id);
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394 }
395
396
397
398 /**
399 * Return true if this plugin can upgrade an old Moodle 2.2 assignment of this type
400 * and version.
401 *
402 * @param string $type
403 * @param int $version
404 * @return bool True if upgrade is possible
405 */
406 public function can_upgrade($type, $version) {
407
408 $uploadsingletype ='uploadsingle';
409 $uploadtype ='upload';
410
411 if (($type == $uploadsingletype || $type == $uploadtype) && $version >= 2011112900) {
412 return true;
413 }
414 return false;
415 }
416
417
418 /**
419 * Upgrade the settings from the old assignment
420 * to the new plugin based one
421 *
422 * @param context $oldcontext - the old assignment context
423 * @param stdClass $oldassignment - the old assignment data record
424 * @param string $log record log events here
425 * @return bool Was it a success? (false will trigger rollback)
426 */
e5403f8c 427 public function upgrade_settings(context $oldcontext, stdClass $oldassignment, & $log) {
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428 global $DB;
429
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430 if ($oldassignment->assignmenttype == 'uploadsingle') {
431 $this->set_config('maxfilesubmissions', 1);
432 $this->set_config('maxsubmissionsizebytes', $oldassignment->maxbytes);
433 return true;
01d29b39 434 } else if ($oldassignment->assignmenttype == 'upload') {
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435 $this->set_config('maxfilesubmissions', $oldassignment->var1);
436 $this->set_config('maxsubmissionsizebytes', $oldassignment->maxbytes);
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437
438 // Advanced file upload uses a different setting to do the same thing.
439 $DB->set_field('assign',
440 'submissiondrafts',
441 $oldassignment->var4,
442 array('id'=>$this->assignment->get_instance()->id));
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443
444 // Convert advanced file upload "hide description before due date" setting.
445 $alwaysshow = 0;
446 if (!$oldassignment->var3) {
447 $alwaysshow = 1;
448 }
449 $DB->set_field('assign',
450 'alwaysshowdescription',
451 $alwaysshow,
452 array('id'=>$this->assignment->get_instance()->id));
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453 return true;
454 }
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455 }
456
457 /**
458 * Upgrade the submission from the old assignment to the new one
459 *
460 * @param context $oldcontext The context of the old assignment
461 * @param stdClass $oldassignment The data record for the old oldassignment
462 * @param stdClass $oldsubmission The data record for the old submission
463 * @param stdClass $submission The data record for the new submission
464 * @param string $log Record upgrade messages in the log
465 * @return bool true or false - false will trigger a rollback
466 */
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467 public function upgrade(context $oldcontext,
468 stdClass $oldassignment,
469 stdClass $oldsubmission,
470 stdClass $submission,
471 & $log) {
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472 global $DB;
473
474 $filesubmission = new stdClass();
475
476 $filesubmission->numfiles = $oldsubmission->numfiles;
477 $filesubmission->submission = $submission->id;
478 $filesubmission->assignment = $this->assignment->get_instance()->id;
479
480 if (!$DB->insert_record('assignsubmission_file', $filesubmission) > 0) {
481 $log .= get_string('couldnotconvertsubmission', 'mod_assign', $submission->userid);
482 return false;
483 }
484
e5403f8c 485 // Now copy the area files.
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486 $this->assignment->copy_area_files_for_upgrade($oldcontext->id,
487 'mod_assignment',
488 'submission',
489 $oldsubmission->id,
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490 $this->assignment->get_context()->id,
491 'assignsubmission_file',
8ab7bb9f 492 ASSIGNSUBMISSION_FILE_FILEAREA,
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493 $submission->id);
494
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495 return true;
496 }
497
498 /**
499 * The assignment has been deleted - cleanup
500 *
501 * @return bool
502 */
503 public function delete_instance() {
504 global $DB;
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505 // Will throw exception on failure.
506 $DB->delete_records('assignsubmission_file',
507 array('assignment'=>$this->assignment->get_instance()->id));
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508
509 return true;
510 }
511
512 /**
513 * Formatting for log info
514 *
515 * @param stdClass $submission The submission
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516 * @return string
517 */
518 public function format_for_log(stdClass $submission) {
e5403f8c 519 // Format the info for each submission plugin (will be added to log).
8ab7bb9f 520 $filecount = $this->count_files($submission->id, ASSIGNSUBMISSION_FILE_FILEAREA);
bbd0e548 521
e5403f8c 522 return get_string('numfilesforlog', 'assignsubmission_file', $filecount);
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523 }
524
525 /**
526 * Return true if there are no submission files
527 * @param stdClass $submission
528 */
529 public function is_empty(stdClass $submission) {
8ab7bb9f 530 return $this->count_files($submission->id, ASSIGNSUBMISSION_FILE_FILEAREA) == 0;
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531 }
532
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533 /**
534 * Determine if a submission is empty
535 *
536 * This is distinct from is_empty in that it is intended to be used to
537 * determine if a submission made before saving is empty.
538 *
539 * @param stdClass $data The submission data
540 * @return bool
541 */
542 public function submission_is_empty(stdClass $data) {
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543 global $USER;
544 $fs = get_file_storage();
545 // Get a count of all the draft files, excluding any directories.
546 $files = $fs->get_area_files(context_user::instance($USER->id)->id,
547 'user',
548 'draft',
549 $data->files_filemanager,
550 'id',
551 false);
552 return count($files) == 0;
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553 }
554
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555 /**
556 * Get file areas returns a list of areas this plugin stores files
557 * @return array - An array of fileareas (keys) and descriptions (values)
558 */
559 public function get_file_areas() {
8ab7bb9f 560 return array(ASSIGNSUBMISSION_FILE_FILEAREA=>$this->get_name());
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561 }
562
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563 /**
564 * Copy the student's submission from a previous submission. Used when a student opts to base their resubmission
565 * on the last submission.
566 * @param stdClass $sourcesubmission
567 * @param stdClass $destsubmission
568 */
569 public function copy_submission(stdClass $sourcesubmission, stdClass $destsubmission) {
570 global $DB;
571
572 // Copy the files across.
573 $contextid = $this->assignment->get_context()->id;
574 $fs = get_file_storage();
575 $files = $fs->get_area_files($contextid,
576 'assignsubmission_file',
577 ASSIGNSUBMISSION_FILE_FILEAREA,
578 $sourcesubmission->id,
579 'id',
580 false);
581 foreach ($files as $file) {
582 $fieldupdates = array('itemid' => $destsubmission->id);
583 $fs->create_file_from_storedfile($fieldupdates, $file);
584 }
585
586 // Copy the assignsubmission_file record.
587 if ($filesubmission = $this->get_file_submission($sourcesubmission->id)) {
588 unset($filesubmission->id);
589 $filesubmission->submission = $destsubmission->id;
590 $DB->insert_record('assignsubmission_file', $filesubmission);
591 }
592 return true;
593 }
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594
595 /**
596 * Return a description of external params suitable for uploading a file submission from a webservice.
597 *
598 * @return external_description|null
599 */
600 public function get_external_parameters() {
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601 return array(
602 'files_filemanager' => new external_value(
603 PARAM_INT,
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604 'The id of a draft area containing files for this submission.',
605 VALUE_OPTIONAL
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DW
606 )
607 );
05a6445a 608 }
30cdddb0
JL
609
610 /**
611 * Return the plugin configs for external functions.
612 *
613 * @return array the list of settings
614 * @since Moodle 3.2
615 */
616 public function get_config_for_external() {
617 global $CFG;
618
619 $configs = $this->get_config();
620
621 // Get a size in bytes.
622 if ($configs->maxsubmissionsizebytes == 0) {
623 $configs->maxsubmissionsizebytes = get_max_upload_file_size($CFG->maxbytes, $this->assignment->get_course()->maxbytes,
624 get_config('assignsubmission_file', 'maxbytes'));
625 }
626 return (array) $configs;
627 }
4044cad5
JF
628
629 /**
630 * Get the type sets configured for this assignment.
631 *
632 * @return array('groupname', 'mime/type', ...)
633 */
634 private function get_configured_typesets() {
635 $typeslist = (string)$this->get_config('filetypeslist');
636
847a4e21
JO
637 $util = new \core_form\filetypes_util();
638 $sets = $util->normalize_file_types($typeslist);
61527865
JO
639
640 return $sets;
641 }
4a6edc57
NN
642
643 /**
644 * Determine if the plugin allows image file conversion
645 * @return bool
646 */
647 public function allow_image_conversion() {
648 return true;
649 }
bbd0e548 650}