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 * Wiki module external API. 19 * 20 * @package mod_wiki 21 * @category external 22 * @copyright 2015 Dani Palou <dani@moodle.com> 23 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later 24 * @since Moodle 3.1 25 */ 26 27defined('MOODLE_INTERNAL') || die; 28 29require_once($CFG->libdir . '/externallib.php'); 30require_once($CFG->dirroot . '/mod/wiki/lib.php'); 31require_once($CFG->dirroot . '/mod/wiki/locallib.php'); 32 33/** 34 * Wiki module external functions. 35 * 36 * @package mod_wiki 37 * @category external 38 * @copyright 2015 Dani Palou <dani@moodle.com> 39 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later 40 * @since Moodle 3.1 41 */ 42class mod_wiki_external extends external_api { 43 44 /** 45 * Describes the parameters for get_wikis_by_courses. 46 * 47 * @return external_function_parameters 48 * @since Moodle 3.1 49 */ 50 public static function get_wikis_by_courses_parameters() { 51 return new external_function_parameters ( 52 array( 53 'courseids' => new external_multiple_structure( 54 new external_value(PARAM_INT, 'Course ID'), 'Array of course ids.', VALUE_DEFAULT, array() 55 ), 56 ) 57 ); 58 } 59 60 /** 61 * Returns a list of wikis in a provided list of courses, 62 * if no list is provided all wikis that the user can view will be returned. 63 * 64 * @param array $courseids The courses IDs. 65 * @return array Containing a list of warnings and a list of wikis. 66 * @since Moodle 3.1 67 */ 68 public static function get_wikis_by_courses($courseids = array()) { 69 70 $returnedwikis = array(); 71 $warnings = array(); 72 73 $params = self::validate_parameters(self::get_wikis_by_courses_parameters(), array('courseids' => $courseids)); 74 75 $mycourses = array(); 76 if (empty($params['courseids'])) { 77 $mycourses = enrol_get_my_courses(); 78 $params['courseids'] = array_keys($mycourses); 79 } 80 81 // Ensure there are courseids to loop through. 82 if (!empty($params['courseids'])) { 83 84 list($courses, $warnings) = external_util::validate_courses($params['courseids'], $mycourses); 85 86 // Get the wikis in this course, this function checks users visibility permissions. 87 // We can avoid then additional validate_context calls. 88 $wikis = get_all_instances_in_courses('wiki', $courses); 89 90 foreach ($wikis as $wiki) { 91 92 $context = context_module::instance($wiki->coursemodule); 93 94 // Entry to return. 95 $module = array(); 96 97 // First, we return information that any user can see in (or can deduce from) the web interface. 98 $module['id'] = $wiki->id; 99 $module['coursemodule'] = $wiki->coursemodule; 100 $module['course'] = $wiki->course; 101 $module['name'] = external_format_string($wiki->name, $context->id); 102 103 $viewablefields = []; 104 if (has_capability('mod/wiki:viewpage', $context)) { 105 $options = array('noclean' => true); 106 list($module['intro'], $module['introformat']) = 107 external_format_text($wiki->intro, $wiki->introformat, $context->id, 'mod_wiki', 'intro', null, $options); 108 $module['introfiles'] = external_util::get_area_files($context->id, 'mod_wiki', 'intro', false, false); 109 110 $viewablefields = array('firstpagetitle', 'wikimode', 'defaultformat', 'forceformat', 'editbegin', 'editend', 111 'section', 'visible', 'groupmode', 'groupingid'); 112 } 113 114 // Check additional permissions for returning optional private settings. 115 if (has_capability('moodle/course:manageactivities', $context)) { 116 $additionalfields = array('timecreated', 'timemodified'); 117 $viewablefields = array_merge($viewablefields, $additionalfields); 118 } 119 120 foreach ($viewablefields as $field) { 121 $module[$field] = $wiki->{$field}; 122 } 123 124 // Check if user can add new pages. 125 $module['cancreatepages'] = wiki_can_create_pages($context); 126 127 $returnedwikis[] = $module; 128 } 129 } 130 131 $result = array(); 132 $result['wikis'] = $returnedwikis; 133 $result['warnings'] = $warnings; 134 return $result; 135 } 136 137 /** 138 * Describes the get_wikis_by_courses return value. 139 * 140 * @return external_single_structure 141 * @since Moodle 3.1 142 */ 143 public static function get_wikis_by_courses_returns() { 144 145 return new external_single_structure( 146 array( 147 'wikis' => new external_multiple_structure( 148 new external_single_structure( 149 array( 150 'id' => new external_value(PARAM_INT, 'Wiki ID.'), 151 'coursemodule' => new external_value(PARAM_INT, 'Course module ID.'), 152 'course' => new external_value(PARAM_INT, 'Course ID.'), 153 'name' => new external_value(PARAM_RAW, 'Wiki name.'), 154 'intro' => new external_value(PARAM_RAW, 'Wiki intro.', VALUE_OPTIONAL), 155 'introformat' => new external_format_value('Wiki intro format.', VALUE_OPTIONAL), 156 'introfiles' => new external_files('Files in the introduction text', VALUE_OPTIONAL), 157 'timecreated' => new external_value(PARAM_INT, 'Time of creation.', VALUE_OPTIONAL), 158 'timemodified' => new external_value(PARAM_INT, 'Time of last modification.', VALUE_OPTIONAL), 159 'firstpagetitle' => new external_value(PARAM_RAW, 'First page title.', VALUE_OPTIONAL), 160 'wikimode' => new external_value(PARAM_TEXT, 'Wiki mode (individual, collaborative).', VALUE_OPTIONAL), 161 'defaultformat' => new external_value(PARAM_TEXT, 'Wiki\'s default format (html, creole, nwiki).', 162 VALUE_OPTIONAL), 163 'forceformat' => new external_value(PARAM_INT, '1 if format is forced, 0 otherwise.', 164 VALUE_OPTIONAL), 165 'editbegin' => new external_value(PARAM_INT, 'Edit begin.', VALUE_OPTIONAL), 166 'editend' => new external_value(PARAM_INT, 'Edit end.', VALUE_OPTIONAL), 167 'section' => new external_value(PARAM_INT, 'Course section ID.', VALUE_OPTIONAL), 168 'visible' => new external_value(PARAM_INT, '1 if visible, 0 otherwise.', VALUE_OPTIONAL), 169 'groupmode' => new external_value(PARAM_INT, 'Group mode.', VALUE_OPTIONAL), 170 'groupingid' => new external_value(PARAM_INT, 'Group ID.', VALUE_OPTIONAL), 171 'cancreatepages' => new external_value(PARAM_BOOL, 'True if user can create pages.'), 172 ), 'Wikis' 173 ) 174 ), 175 'warnings' => new external_warnings(), 176 ) 177 ); 178 } 179 180 /** 181 * Describes the parameters for view_wiki. 182 * 183 * @return external_function_parameters 184 * @since Moodle 3.1 185 */ 186 public static function view_wiki_parameters() { 187 return new external_function_parameters ( 188 array( 189 'wikiid' => new external_value(PARAM_INT, 'Wiki instance ID.') 190 ) 191 ); 192 } 193 194 /** 195 * Trigger the course module viewed event and update the module completion status. 196 * 197 * @param int $wikiid The wiki instance ID. 198 * @return array of warnings and status result. 199 * @since Moodle 3.1 200 */ 201 public static function view_wiki($wikiid) { 202 203 $params = self::validate_parameters(self::view_wiki_parameters(), 204 array( 205 'wikiid' => $wikiid 206 )); 207 $warnings = array(); 208 209 // Get wiki instance. 210 if (!$wiki = wiki_get_wiki($params['wikiid'])) { 211 throw new moodle_exception('incorrectwikiid', 'wiki'); 212 } 213 214 // Permission validation. 215 list($course, $cm) = get_course_and_cm_from_instance($wiki, 'wiki'); 216 $context = context_module::instance($cm->id); 217 self::validate_context($context); 218 219 // Check if user can view this wiki. 220 // We don't use wiki_user_can_view because it requires to have a valid subwiki for the user. 221 if (!has_capability('mod/wiki:viewpage', $context)) { 222 throw new moodle_exception('cannotviewpage', 'wiki'); 223 } 224 225 // Trigger course_module_viewed event and completion. 226 wiki_view($wiki, $course, $cm, $context); 227 228 $result = array(); 229 $result['status'] = true; 230 $result['warnings'] = $warnings; 231 return $result; 232 } 233 234 /** 235 * Describes the view_wiki return value. 236 * 237 * @return external_single_structure 238 * @since Moodle 3.1 239 */ 240 public static function view_wiki_returns() { 241 return new external_single_structure( 242 array( 243 'status' => new external_value(PARAM_BOOL, 'Status: true if success.'), 244 'warnings' => new external_warnings() 245 ) 246 ); 247 } 248 249 /** 250 * Describes the parameters for view_page. 251 * 252 * @return external_function_parameters 253 * @since Moodle 3.1 254 */ 255 public static function view_page_parameters() { 256 return new external_function_parameters ( 257 array( 258 'pageid' => new external_value(PARAM_INT, 'Wiki page ID.'), 259 ) 260 ); 261 } 262 263 /** 264 * Trigger the page viewed event and update the module completion status. 265 * 266 * @param int $pageid The page ID. 267 * @return array of warnings and status result. 268 * @since Moodle 3.1 269 * @throws moodle_exception if page is not valid. 270 */ 271 public static function view_page($pageid) { 272 273 $params = self::validate_parameters(self::view_page_parameters(), 274 array( 275 'pageid' => $pageid 276 )); 277 $warnings = array(); 278 279 // Get wiki page. 280 if (!$page = wiki_get_page($params['pageid'])) { 281 throw new moodle_exception('incorrectpageid', 'wiki'); 282 } 283 284 // Get wiki instance. 285 if (!$wiki = wiki_get_wiki_from_pageid($params['pageid'])) { 286 throw new moodle_exception('incorrectwikiid', 'wiki'); 287 } 288 289 // Permission validation. 290 list($course, $cm) = get_course_and_cm_from_instance($wiki, 'wiki'); 291 $context = context_module::instance($cm->id); 292 self::validate_context($context); 293 294 // Check if user can view this wiki. 295 if (!$subwiki = wiki_get_subwiki($page->subwikiid)) { 296 throw new moodle_exception('incorrectsubwikiid', 'wiki'); 297 } 298 if (!wiki_user_can_view($subwiki, $wiki)) { 299 throw new moodle_exception('cannotviewpage', 'wiki'); 300 } 301 302 // Trigger page_viewed event and completion. 303 wiki_page_view($wiki, $page, $course, $cm, $context); 304 305 $result = array(); 306 $result['status'] = true; 307 $result['warnings'] = $warnings; 308 return $result; 309 } 310 311 /** 312 * Describes the view_page return value. 313 * 314 * @return external_single_structure 315 * @since Moodle 3.1 316 */ 317 public static function view_page_returns() { 318 return new external_single_structure( 319 array( 320 'status' => new external_value(PARAM_BOOL, 'Status: true if success.'), 321 'warnings' => new external_warnings() 322 ) 323 ); 324 } 325 326 /** 327 * Describes the parameters for get_subwikis. 328 * 329 * @return external_function_parameters 330 * @since Moodle 3.1 331 */ 332 public static function get_subwikis_parameters() { 333 return new external_function_parameters ( 334 array( 335 'wikiid' => new external_value(PARAM_INT, 'Wiki instance ID.') 336 ) 337 ); 338 } 339 340 /** 341 * Returns the list of subwikis the user can see in a specific wiki. 342 * 343 * @param int $wikiid The wiki instance ID. 344 * @return array Containing a list of warnings and a list of subwikis. 345 * @since Moodle 3.1 346 */ 347 public static function get_subwikis($wikiid) { 348 global $USER; 349 350 $warnings = array(); 351 352 $params = self::validate_parameters(self::get_subwikis_parameters(), array('wikiid' => $wikiid)); 353 354 // Get wiki instance. 355 if (!$wiki = wiki_get_wiki($params['wikiid'])) { 356 throw new moodle_exception('incorrectwikiid', 'wiki'); 357 } 358 359 // Validate context and capabilities. 360 list($course, $cm) = get_course_and_cm_from_instance($wiki, 'wiki'); 361 $context = context_module::instance($cm->id); 362 self::validate_context($context); 363 require_capability('mod/wiki:viewpage', $context); 364 365 $returnedsubwikis = wiki_get_visible_subwikis($wiki, $cm, $context); 366 foreach ($returnedsubwikis as $subwiki) { 367 $subwiki->canedit = wiki_user_can_edit($subwiki); 368 } 369 370 $result = array(); 371 $result['subwikis'] = $returnedsubwikis; 372 $result['warnings'] = $warnings; 373 return $result; 374 } 375 376 /** 377 * Describes the get_subwikis return value. 378 * 379 * @return external_single_structure 380 * @since Moodle 3.1 381 */ 382 public static function get_subwikis_returns() { 383 return new external_single_structure( 384 array( 385 'subwikis' => new external_multiple_structure( 386 new external_single_structure( 387 array( 388 'id' => new external_value(PARAM_INT, 'Subwiki ID.'), 389 'wikiid' => new external_value(PARAM_INT, 'Wiki ID.'), 390 'groupid' => new external_value(PARAM_RAW, 'Group ID.'), 391 'userid' => new external_value(PARAM_INT, 'User ID.'), 392 'canedit' => new external_value(PARAM_BOOL, 'True if user can edit the subwiki.'), 393 ), 'Subwikis' 394 ) 395 ), 396 'warnings' => new external_warnings(), 397 ) 398 ); 399 } 400 401 /** 402 * Describes the parameters for get_subwiki_pages. 403 * 404 * @return external_function_parameters 405 * @since Moodle 3.1 406 */ 407 public static function get_subwiki_pages_parameters() { 408 return new external_function_parameters ( 409 array( 410 'wikiid' => new external_value(PARAM_INT, 'Wiki instance ID.'), 411 'groupid' => new external_value(PARAM_INT, 'Subwiki\'s group ID, -1 means current group. It will be ignored' 412 . ' if the wiki doesn\'t use groups.', VALUE_DEFAULT, -1), 413 'userid' => new external_value(PARAM_INT, 'Subwiki\'s user ID, 0 means current user. It will be ignored' 414 .' in collaborative wikis.', VALUE_DEFAULT, 0), 415 'options' => new external_single_structure( 416 array( 417 'sortby' => new external_value(PARAM_ALPHA, 418 'Field to sort by (id, title, ...).', VALUE_DEFAULT, 'title'), 419 'sortdirection' => new external_value(PARAM_ALPHA, 420 'Sort direction: ASC or DESC.', VALUE_DEFAULT, 'ASC'), 421 'includecontent' => new external_value(PARAM_INT, 422 'Include each page contents or just the contents size.', VALUE_DEFAULT, 1), 423 ), 'Options', VALUE_DEFAULT, array()), 424 ) 425 ); 426 } 427 428 /** 429 * Returns the list of pages from a specific subwiki. 430 * 431 * @param int $wikiid The wiki instance ID. 432 * @param int $groupid The group ID. If not defined, use current group. 433 * @param int $userid The user ID. If not defined, use current user. 434 * @param array $options Several options like sort by, sort direction, ... 435 * @return array Containing a list of warnings and a list of pages. 436 * @since Moodle 3.1 437 */ 438 public static function get_subwiki_pages($wikiid, $groupid = -1, $userid = 0, $options = array()) { 439 440 $returnedpages = array(); 441 $warnings = array(); 442 443 $params = self::validate_parameters(self::get_subwiki_pages_parameters(), 444 array( 445 'wikiid' => $wikiid, 446 'groupid' => $groupid, 447 'userid' => $userid, 448 'options' => $options 449 ) 450 ); 451 452 // Get wiki instance. 453 if (!$wiki = wiki_get_wiki($params['wikiid'])) { 454 throw new moodle_exception('incorrectwikiid', 'wiki'); 455 } 456 list($course, $cm) = get_course_and_cm_from_instance($wiki, 'wiki'); 457 $context = context_module::instance($cm->id); 458 self::validate_context($context); 459 460 // Determine groupid and userid to use. 461 list($groupid, $userid) = self::determine_group_and_user($cm, $wiki, $params['groupid'], $params['userid']); 462 463 // Get subwiki and validate it. 464 $subwiki = wiki_get_subwiki_by_group_and_user_with_validation($wiki, $groupid, $userid); 465 466 if ($subwiki === false) { 467 throw new moodle_exception('cannotviewpage', 'wiki'); 468 } else if ($subwiki->id != -1) { 469 470 // Set sort param. 471 $options = $params['options']; 472 if (!empty($options['sortby'])) { 473 if ($options['sortdirection'] != 'ASC' && $options['sortdirection'] != 'DESC') { 474 // Invalid sort direction. Use default. 475 $options['sortdirection'] = 'ASC'; 476 } 477 $sort = $options['sortby'] . ' ' . $options['sortdirection']; 478 } 479 480 $pages = wiki_get_page_list($subwiki->id, $sort); 481 $caneditpages = wiki_user_can_edit($subwiki); 482 $firstpage = wiki_get_first_page($subwiki->id); 483 484 foreach ($pages as $page) { 485 $retpage = array( 486 'id' => $page->id, 487 'subwikiid' => $page->subwikiid, 488 'title' => external_format_string($page->title, $context->id), 489 'timecreated' => $page->timecreated, 490 'timemodified' => $page->timemodified, 491 'timerendered' => $page->timerendered, 492 'userid' => $page->userid, 493 'pageviews' => $page->pageviews, 494 'readonly' => $page->readonly, 495 'caneditpage' => $caneditpages, 496 'firstpage' => $page->id == $firstpage->id, 497 'tags' => \core_tag\external\util::get_item_tags('mod_wiki', 'wiki_pages', $page->id), 498 ); 499 500 // Refresh page cached content if needed. 501 if ($page->timerendered + WIKI_REFRESH_CACHE_TIME < time()) { 502 if ($content = wiki_refresh_cachedcontent($page)) { 503 $page = $content['page']; 504 } 505 } 506 list($cachedcontent, $contentformat) = external_format_text( 507 $page->cachedcontent, FORMAT_HTML, $context->id, 'mod_wiki', 'attachments', $subwiki->id); 508 509 if ($options['includecontent']) { 510 // Return the page content. 511 $retpage['cachedcontent'] = $cachedcontent; 512 $retpage['contentformat'] = $contentformat; 513 } else { 514 // Return the size of the content. 515 if (function_exists('mb_strlen') && ((int)ini_get('mbstring.func_overload') & 2)) { 516 $retpage['contentsize'] = mb_strlen($cachedcontent, '8bit'); 517 } else { 518 $retpage['contentsize'] = strlen($cachedcontent); 519 } 520 } 521 522 $returnedpages[] = $retpage; 523 } 524 } 525 526 $result = array(); 527 $result['pages'] = $returnedpages; 528 $result['warnings'] = $warnings; 529 return $result; 530 } 531 532 /** 533 * Describes the get_subwiki_pages return value. 534 * 535 * @return external_single_structure 536 * @since Moodle 3.1 537 */ 538 public static function get_subwiki_pages_returns() { 539 540 return new external_single_structure( 541 array( 542 'pages' => new external_multiple_structure( 543 new external_single_structure( 544 array( 545 'id' => new external_value(PARAM_INT, 'Page ID.'), 546 'subwikiid' => new external_value(PARAM_INT, 'Page\'s subwiki ID.'), 547 'title' => new external_value(PARAM_RAW, 'Page title.'), 548 'timecreated' => new external_value(PARAM_INT, 'Time of creation.'), 549 'timemodified' => new external_value(PARAM_INT, 'Time of last modification.'), 550 'timerendered' => new external_value(PARAM_INT, 'Time of last renderization.'), 551 'userid' => new external_value(PARAM_INT, 'ID of the user that last modified the page.'), 552 'pageviews' => new external_value(PARAM_INT, 'Number of times the page has been viewed.'), 553 'readonly' => new external_value(PARAM_INT, '1 if readonly, 0 otherwise.'), 554 'caneditpage' => new external_value(PARAM_BOOL, 'True if user can edit the page.'), 555 'firstpage' => new external_value(PARAM_BOOL, 'True if it\'s the first page.'), 556 'cachedcontent' => new external_value(PARAM_RAW, 'Page contents.', VALUE_OPTIONAL), 557 'contentformat' => new external_format_value('cachedcontent', VALUE_OPTIONAL), 558 'contentsize' => new external_value(PARAM_INT, 'Size of page contents in bytes (doesn\'t include'. 559 ' size of attached files).', VALUE_OPTIONAL), 560 'tags' => new external_multiple_structure( 561 \core_tag\external\tag_item_exporter::get_read_structure(), 'Tags', VALUE_OPTIONAL 562 ), 563 ), 'Pages' 564 ) 565 ), 566 'warnings' => new external_warnings(), 567 ) 568 ); 569 } 570 571 /** 572 * Describes the parameters for get_page_contents. 573 * 574 * @return external_function_parameters 575 * @since Moodle 3.1 576 */ 577 public static function get_page_contents_parameters() { 578 return new external_function_parameters ( 579 array( 580 'pageid' => new external_value(PARAM_INT, 'Page ID.') 581 ) 582 ); 583 } 584 585 /** 586 * Get a page contents. 587 * 588 * @param int $pageid The page ID. 589 * @return array of warnings and page data. 590 * @since Moodle 3.1 591 */ 592 public static function get_page_contents($pageid) { 593 594 $params = self::validate_parameters(self::get_page_contents_parameters(), 595 array( 596 'pageid' => $pageid 597 ) 598 ); 599 $warnings = array(); 600 601 // Get wiki page. 602 if (!$page = wiki_get_page($params['pageid'])) { 603 throw new moodle_exception('incorrectpageid', 'wiki'); 604 } 605 606 // Get wiki instance. 607 if (!$wiki = wiki_get_wiki_from_pageid($params['pageid'])) { 608 throw new moodle_exception('incorrectwikiid', 'wiki'); 609 } 610 611 // Permission validation. 612 $cm = get_coursemodule_from_instance('wiki', $wiki->id, $wiki->course); 613 $context = context_module::instance($cm->id); 614 self::validate_context($context); 615 616 // Check if user can view this wiki. 617 if (!$subwiki = wiki_get_subwiki($page->subwikiid)) { 618 throw new moodle_exception('incorrectsubwikiid', 'wiki'); 619 } 620 if (!wiki_user_can_view($subwiki, $wiki)) { 621 throw new moodle_exception('cannotviewpage', 'wiki'); 622 } 623 624 $returnedpage = array(); 625 $returnedpage['id'] = $page->id; 626 $returnedpage['wikiid'] = $wiki->id; 627 $returnedpage['subwikiid'] = $page->subwikiid; 628 $returnedpage['groupid'] = $subwiki->groupid; 629 $returnedpage['userid'] = $subwiki->userid; 630 $returnedpage['title'] = $page->title; 631 $returnedpage['tags'] = \core_tag\external\util::get_item_tags('mod_wiki', 'wiki_pages', $page->id); 632 633 // Refresh page cached content if needed. 634 if ($page->timerendered + WIKI_REFRESH_CACHE_TIME < time()) { 635 if ($content = wiki_refresh_cachedcontent($page)) { 636 $page = $content['page']; 637 } 638 } 639 640 list($returnedpage['cachedcontent'], $returnedpage['contentformat']) = external_format_text( 641 $page->cachedcontent, FORMAT_HTML, $context->id, 'mod_wiki', 'attachments', $subwiki->id); 642 $returnedpage['caneditpage'] = wiki_user_can_edit($subwiki); 643 644 // Get page version. 645 $version = wiki_get_current_version($page->id); 646 if (!empty($version)) { 647 $returnedpage['version'] = $version->version; 648 } 649 650 $result = array(); 651 $result['page'] = $returnedpage; 652 $result['warnings'] = $warnings; 653 return $result; 654 } 655 656 /** 657 * Describes the get_page_contents return value. 658 * 659 * @return external_single_structure 660 * @since Moodle 3.1 661 */ 662 public static function get_page_contents_returns() { 663 return new external_single_structure( 664 array( 665 'page' => new external_single_structure( 666 array( 667 'id' => new external_value(PARAM_INT, 'Page ID.'), 668 'wikiid' => new external_value(PARAM_INT, 'Page\'s wiki ID.'), 669 'subwikiid' => new external_value(PARAM_INT, 'Page\'s subwiki ID.'), 670 'groupid' => new external_value(PARAM_INT, 'Page\'s group ID.'), 671 'userid' => new external_value(PARAM_INT, 'Page\'s user ID.'), 672 'title' => new external_value(PARAM_RAW, 'Page title.'), 673 'cachedcontent' => new external_value(PARAM_RAW, 'Page contents.'), 674 'contentformat' => new external_format_value('cachedcontent', VALUE_OPTIONAL), 675 'caneditpage' => new external_value(PARAM_BOOL, 'True if user can edit the page.'), 676 'version' => new external_value(PARAM_INT, 'Latest version of the page.', VALUE_OPTIONAL), 677 'tags' => new external_multiple_structure( 678 \core_tag\external\tag_item_exporter::get_read_structure(), 'Tags', VALUE_OPTIONAL 679 ), 680 ), 'Page' 681 ), 682 'warnings' => new external_warnings() 683 ) 684 ); 685 } 686 687 /** 688 * Describes the parameters for get_subwiki_files. 689 * 690 * @return external_function_parameters 691 * @since Moodle 3.1 692 */ 693 public static function get_subwiki_files_parameters() { 694 return new external_function_parameters ( 695 array( 696 'wikiid' => new external_value(PARAM_INT, 'Wiki instance ID.'), 697 'groupid' => new external_value(PARAM_INT, 'Subwiki\'s group ID, -1 means current group. It will be ignored' 698 . ' if the wiki doesn\'t use groups.', VALUE_DEFAULT, -1), 699 'userid' => new external_value(PARAM_INT, 'Subwiki\'s user ID, 0 means current user. It will be ignored' 700 .' in collaborative wikis.', VALUE_DEFAULT, 0) 701 ) 702 ); 703 } 704 705 /** 706 * Returns the list of files from a specific subwiki. 707 * 708 * @param int $wikiid The wiki instance ID. 709 * @param int $groupid The group ID. If not defined, use current group. 710 * @param int $userid The user ID. If not defined, use current user. 711 * @return array Containing a list of warnings and a list of files. 712 * @since Moodle 3.1 713 * @throws moodle_exception 714 */ 715 public static function get_subwiki_files($wikiid, $groupid = -1, $userid = 0) { 716 717 $returnedfiles = array(); 718 $warnings = array(); 719 720 $params = self::validate_parameters(self::get_subwiki_files_parameters(), 721 array( 722 'wikiid' => $wikiid, 723 'groupid' => $groupid, 724 'userid' => $userid 725 ) 726 ); 727 728 // Get wiki instance. 729 if (!$wiki = wiki_get_wiki($params['wikiid'])) { 730 throw new moodle_exception('incorrectwikiid', 'wiki'); 731 } 732 list($course, $cm) = get_course_and_cm_from_instance($wiki, 'wiki'); 733 $context = context_module::instance($cm->id); 734 self::validate_context($context); 735 736 // Determine groupid and userid to use. 737 list($groupid, $userid) = self::determine_group_and_user($cm, $wiki, $params['groupid'], $params['userid']); 738 739 // Get subwiki and validate it. 740 $subwiki = wiki_get_subwiki_by_group_and_user_with_validation($wiki, $groupid, $userid); 741 742 // Get subwiki based on group and user. 743 if ($subwiki === false) { 744 throw new moodle_exception('cannotviewfiles', 'wiki'); 745 } else if ($subwiki->id != -1) { 746 // The subwiki exists, let's get the files. 747 $returnedfiles = external_util::get_area_files($context->id, 'mod_wiki', 'attachments', $subwiki->id); 748 } 749 750 $result = array(); 751 $result['files'] = $returnedfiles; 752 $result['warnings'] = $warnings; 753 return $result; 754 } 755 756 /** 757 * Describes the get_subwiki_pages return value. 758 * 759 * @return external_single_structure 760 * @since Moodle 3.1 761 */ 762 public static function get_subwiki_files_returns() { 763 764 return new external_single_structure( 765 array( 766 'files' => new external_files('Files'), 767 'warnings' => new external_warnings(), 768 ) 769 ); 770 } 771 772 /** 773 * Utility function for determining the groupid and userid to use. 774 * 775 * @param stdClass $cm The course module. 776 * @param stdClass $wiki The wiki. 777 * @param int $groupid Group ID. If not defined, use current group. 778 * @param int $userid User ID. If not defined, use current user. 779 * @return array Array containing the courseid and userid. 780 * @since Moodle 3.1 781 */ 782 protected static function determine_group_and_user($cm, $wiki, $groupid = -1, $userid = 0) { 783 global $USER; 784 785 $currentgroup = groups_get_activity_group($cm); 786 if ($currentgroup === false) { 787 // Activity doesn't use groups. 788 $groupid = 0; 789 } else if ($groupid == -1) { 790 // Use current group. 791 $groupid = !empty($currentgroup) ? $currentgroup : 0; 792 } 793 794 // Determine user. 795 if ($wiki->wikimode == 'collaborative') { 796 // Collaborative wikis don't use userid in subwikis. 797 $userid = 0; 798 } else if (empty($userid)) { 799 // Use current user. 800 $userid = $USER->id; 801 } 802 803 return array($groupid, $userid); 804 } 805 806 /** 807 * Describes the parameters for get_page_for_editing. 808 * 809 * @return external_function_parameters 810 * @since Moodle 3.1 811 */ 812 public static function get_page_for_editing_parameters() { 813 return new external_function_parameters ( 814 array( 815 'pageid' => new external_value(PARAM_INT, 'Page ID to edit.'), 816 'section' => new external_value(PARAM_RAW, 'Section page title.', VALUE_DEFAULT, null), 817 'lockonly' => new external_value(PARAM_BOOL, 'Just renew lock and not return content.', VALUE_DEFAULT, false) 818 ) 819 ); 820 } 821 822 /** 823 * Locks and retrieves info of page-section to be edited. 824 * 825 * @param int $pageid The page ID. 826 * @param string $section Section page title. 827 * @param boolean $lockonly If true: Just renew lock and not return content. 828 * @return array of warnings and page data. 829 * @since Moodle 3.1 830 */ 831 public static function get_page_for_editing($pageid, $section = null, $lockonly = false) { 832 global $USER; 833 834 $params = self::validate_parameters(self::get_page_for_editing_parameters(), 835 array( 836 'pageid' => $pageid, 837 'section' => $section, 838 'lockonly' => $lockonly 839 ) 840 ); 841 842 $warnings = array(); 843 844 // Get wiki page. 845 if (!$page = wiki_get_page($params['pageid'])) { 846 throw new moodle_exception('incorrectpageid', 'wiki'); 847 } 848 849 // Get wiki instance. 850 if (!$wiki = wiki_get_wiki_from_pageid($params['pageid'])) { 851 throw new moodle_exception('incorrectwikiid', 'wiki'); 852 } 853 854 // Get subwiki instance. 855 if (!$subwiki = wiki_get_subwiki($page->subwikiid)) { 856 throw new moodle_exception('incorrectsubwikiid', 'wiki'); 857 } 858 859 // Permission validation. 860 $cm = get_coursemodule_from_instance('wiki', $wiki->id, $wiki->course); 861 $context = context_module::instance($cm->id); 862 self::validate_context($context); 863 864 if (!wiki_user_can_edit($subwiki)) { 865 throw new moodle_exception('cannoteditpage', 'wiki'); 866 } 867 868 if (!wiki_set_lock($params['pageid'], $USER->id, $params['section'], true)) { 869 throw new moodle_exception('pageislocked', 'wiki'); 870 } 871 872 $version = wiki_get_current_version($page->id); 873 if (empty($version)) { 874 throw new moodle_exception('versionerror', 'wiki'); 875 } 876 877 $pagesection = array(); 878 $pagesection['version'] = $version->version; 879 880 // Content requested to be returned. 881 if (!$lockonly) { 882 if (!is_null($params['section'])) { 883 $content = wiki_parser_proxy::get_section($version->content, $version->contentformat, $params['section']); 884 } else { 885 $content = $version->content; 886 } 887 888 $pagesection['content'] = $content; 889 $pagesection['contentformat'] = $version->contentformat; 890 } 891 892 $result = array(); 893 $result['pagesection'] = $pagesection; 894 $result['warnings'] = $warnings; 895 return $result; 896 897 } 898 899 /** 900 * Describes the get_page_for_editing return value. 901 * 902 * @return external_single_structure 903 * @since Moodle 3.1 904 */ 905 public static function get_page_for_editing_returns() { 906 return new external_single_structure( 907 array( 908 'pagesection' => new external_single_structure( 909 array( 910 'content' => new external_value(PARAM_RAW, 'The contents of the page-section to be edited.', 911 VALUE_OPTIONAL), 912 'contentformat' => new external_value(PARAM_TEXT, 'Format of the original content of the page.', 913 VALUE_OPTIONAL), 914 'version' => new external_value(PARAM_INT, 'Latest version of the page.'), 915 'warnings' => new external_warnings() 916 ) 917 ) 918 ) 919 ); 920 } 921 922 /** 923 * Describes the parameters for new_page. 924 * 925 * @return external_function_parameters 926 * @since Moodle 3.1 927 */ 928 public static function new_page_parameters() { 929 return new external_function_parameters ( 930 array( 931 'title' => new external_value(PARAM_TEXT, 'New page title.'), 932 'content' => new external_value(PARAM_RAW, 'Page contents.'), 933 'contentformat' => new external_value(PARAM_TEXT, 'Page contents format. If an invalid format is provided, default 934 wiki format is used.', VALUE_DEFAULT, null), 935 'subwikiid' => new external_value(PARAM_INT, 'Page\'s subwiki ID.', VALUE_DEFAULT, null), 936 'wikiid' => new external_value(PARAM_INT, 'Page\'s wiki ID. Used if subwiki does not exists.', VALUE_DEFAULT, 937 null), 938 'userid' => new external_value(PARAM_INT, 'Subwiki\'s user ID. Used if subwiki does not exists.', VALUE_DEFAULT, 939 null), 940 'groupid' => new external_value(PARAM_INT, 'Subwiki\'s group ID. Used if subwiki does not exists.', VALUE_DEFAULT, 941 null) 942 ) 943 ); 944 } 945 946 /** 947 * Creates a new page. 948 * 949 * @param string $title New page title. 950 * @param string $content Page contents. 951 * @param int $contentformat Page contents format. If an invalid format is provided, default wiki format is used. 952 * @param int $subwikiid The Subwiki ID where to store the page. 953 * @param int $wikiid Page\'s wiki ID. Used if subwiki does not exists. 954 * @param int $userid Subwiki\'s user ID. Used if subwiki does not exists. 955 * @param int $groupid Subwiki\'s group ID. Used if subwiki does not exists. 956 * @return array of warnings and page data. 957 * @since Moodle 3.1 958 */ 959 public static function new_page($title, $content, $contentformat = null, $subwikiid = null, $wikiid = null, $userid = null, 960 $groupid = null) { 961 global $USER; 962 963 $params = self::validate_parameters(self::new_page_parameters(), 964 array( 965 'title' => $title, 966 'content' => $content, 967 'contentformat' => $contentformat, 968 'subwikiid' => $subwikiid, 969 'wikiid' => $wikiid, 970 'userid' => $userid, 971 'groupid' => $groupid 972 ) 973 ); 974 975 $warnings = array(); 976 977 // Get wiki and subwiki instances. 978 if (!empty($params['subwikiid'])) { 979 if (!$subwiki = wiki_get_subwiki($params['subwikiid'])) { 980 throw new moodle_exception('incorrectsubwikiid', 'wiki'); 981 } 982 983 if (!$wiki = wiki_get_wiki($subwiki->wikiid)) { 984 throw new moodle_exception('incorrectwikiid', 'wiki'); 985 } 986 987 // Permission validation. 988 $cm = get_coursemodule_from_instance('wiki', $wiki->id, $wiki->course); 989 $context = context_module::instance($cm->id); 990 self::validate_context($context); 991 992 } else { 993 if (!$wiki = wiki_get_wiki($params['wikiid'])) { 994 throw new moodle_exception('incorrectwikiid', 'wiki'); 995 } 996 997 // Permission validation. 998 $cm = get_coursemodule_from_instance('wiki', $wiki->id, $wiki->course); 999 $context = context_module::instance($cm->id); 1000 self::validate_context($context); 1001 1002 // Determine groupid and userid to use. 1003 list($groupid, $userid) = self::determine_group_and_user($cm, $wiki, $params['groupid'], $params['userid']); 1004 1005 // Get subwiki and validate it. 1006 $subwiki = wiki_get_subwiki_by_group_and_user_with_validation($wiki, $groupid, $userid); 1007 1008 if ($subwiki === false) { 1009 // User cannot view page. 1010 throw new moodle_exception('cannoteditpage', 'wiki'); 1011 } else if ($subwiki->id < 0) { 1012 // Subwiki needed to check edit permissions. 1013 if (!wiki_user_can_edit($subwiki)) { 1014 throw new moodle_exception('cannoteditpage', 'wiki'); 1015 } 1016 1017 // Subwiki does not exists and it can be created. 1018 $swid = wiki_add_subwiki($wiki->id, $groupid, $userid); 1019 if (!$subwiki = wiki_get_subwiki($swid)) { 1020 throw new moodle_exception('incorrectsubwikiid', 'wiki'); 1021 } 1022 } 1023 } 1024 1025 // Subwiki needed to check edit permissions. 1026 if (!wiki_user_can_edit($subwiki)) { 1027 throw new moodle_exception('cannoteditpage', 'wiki'); 1028 } 1029 1030 if ($page = wiki_get_page_by_title($subwiki->id, $params['title'])) { 1031 throw new moodle_exception('pageexists', 'wiki'); 1032 } 1033 1034 // Ignore invalid formats and use default instead. 1035 if (!$params['contentformat'] || $wiki->forceformat) { 1036 $params['contentformat'] = $wiki->defaultformat; 1037 } else { 1038 $formats = wiki_get_formats(); 1039 if (!in_array($params['contentformat'], $formats)) { 1040 $params['contentformat'] = $wiki->defaultformat; 1041 } 1042 } 1043 1044 $newpageid = wiki_create_page($subwiki->id, $params['title'], $params['contentformat'], $USER->id); 1045 1046 if (!$page = wiki_get_page($newpageid)) { 1047 throw new moodle_exception('incorrectpageid', 'wiki'); 1048 } 1049 1050 // Save content. 1051 $save = wiki_save_page($page, $params['content'], $USER->id); 1052 1053 if (!$save) { 1054 throw new moodle_exception('savingerror', 'wiki'); 1055 } 1056 1057 $result = array(); 1058 $result['pageid'] = $page->id; 1059 $result['warnings'] = $warnings; 1060 return $result; 1061 } 1062 1063 /** 1064 * Describes the new_page return value. 1065 * 1066 * @return external_single_structure 1067 * @since Moodle 3.1 1068 */ 1069 public static function new_page_returns() { 1070 return new external_single_structure( 1071 array( 1072 'pageid' => new external_value(PARAM_INT, 'New page id.'), 1073 'warnings' => new external_warnings() 1074 ) 1075 ); 1076 } 1077 1078 /** 1079 * Describes the parameters for edit_page. 1080 * 1081 * @return external_function_parameters 1082 * @since Moodle 3.1 1083 */ 1084 public static function edit_page_parameters() { 1085 return new external_function_parameters ( 1086 array( 1087 'pageid' => new external_value(PARAM_INT, 'Page ID.'), 1088 'content' => new external_value(PARAM_RAW, 'Page contents.'), 1089 'section' => new external_value(PARAM_RAW, 'Section page title.', VALUE_DEFAULT, null) 1090 ) 1091 ); 1092 } 1093 1094 /** 1095 * Edit a page contents. 1096 * 1097 * @param int $pageid The page ID. 1098 * @param string $content Page contents. 1099 * @param int $section Section to be edited. 1100 * @return array of warnings and page data. 1101 * @since Moodle 3.1 1102 */ 1103 public static function edit_page($pageid, $content, $section = null) { 1104 global $USER; 1105 1106 $params = self::validate_parameters(self::edit_page_parameters(), 1107 array( 1108 'pageid' => $pageid, 1109 'content' => $content, 1110 'section' => $section 1111 ) 1112 ); 1113 $warnings = array(); 1114 1115 // Get wiki page. 1116 if (!$page = wiki_get_page($params['pageid'])) { 1117 throw new moodle_exception('incorrectpageid', 'wiki'); 1118 } 1119 1120 // Get wiki instance. 1121 if (!$wiki = wiki_get_wiki_from_pageid($params['pageid'])) { 1122 throw new moodle_exception('incorrectwikiid', 'wiki'); 1123 } 1124 1125 // Get subwiki instance. 1126 if (!$subwiki = wiki_get_subwiki($page->subwikiid)) { 1127 throw new moodle_exception('incorrectsubwikiid', 'wiki'); 1128 } 1129 1130 // Permission validation. 1131 $cm = get_coursemodule_from_instance('wiki', $wiki->id, $wiki->course); 1132 $context = context_module::instance($cm->id); 1133 self::validate_context($context); 1134 1135 if (!wiki_user_can_edit($subwiki)) { 1136 throw new moodle_exception('cannoteditpage', 'wiki'); 1137 } 1138 1139 if (wiki_is_page_section_locked($page->id, $USER->id, $params['section'])) { 1140 throw new moodle_exception('pageislocked', 'wiki'); 1141 } 1142 1143 // Save content. 1144 if (!is_null($params['section'])) { 1145 $version = wiki_get_current_version($page->id); 1146 $content = wiki_parser_proxy::get_section($version->content, $version->contentformat, $params['section'], false); 1147 if (!$content) { 1148 throw new moodle_exception('invalidsection', 'wiki'); 1149 } 1150 1151 $save = wiki_save_section($page, $params['section'], $params['content'], $USER->id); 1152 } else { 1153 $save = wiki_save_page($page, $params['content'], $USER->id); 1154 } 1155 1156 wiki_delete_locks($page->id, $USER->id, $params['section']); 1157 1158 if (!$save) { 1159 throw new moodle_exception('savingerror', 'wiki'); 1160 } 1161 1162 $result = array(); 1163 $result['pageid'] = $page->id; 1164 $result['warnings'] = $warnings; 1165 return $result; 1166 } 1167 1168 /** 1169 * Describes the edit_page return value. 1170 * 1171 * @return external_single_structure 1172 * @since Moodle 3.1 1173 */ 1174 public static function edit_page_returns() { 1175 return new external_single_structure( 1176 array( 1177 'pageid' => new external_value(PARAM_INT, 'Edited page id.'), 1178 'warnings' => new external_warnings() 1179 ) 1180 ); 1181 } 1182 1183} 1184