MDL-50013 mod_book: New WS mod_book_view_book

lib/db/services.php

@@ -1160,6 +1160,7 @@ $services = array(
             'mod_page_view_page',
             'mod_resource_view_resource',
             'mod_folder_view_folder',
+            'mod_book_view_book',
             ),
         'enabled' => 0,
         'restrictedusers' => 0,

mod/book/classes/external.php

+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Book external API
+ *
+ * @package    mod_book
+ * @category   external
+ * @copyright  2015 Juan Leyva <juan@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ * @since      Moodle 3.0
+ */
+
+defined('MOODLE_INTERNAL') || die;
+
+require_once("$CFG->libdir/externallib.php");
+
+/**
+ * Book external functions
+ *
+ * @package    mod_book
+ * @category   external
+ * @copyright  2015 Juan Leyva <juan@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ * @since      Moodle 3.0
+ */
+class mod_book_external extends external_api {
+
+    /**
+     * Returns description of method parameters
+     *
+     * @return external_function_parameters
+     * @since Moodle 3.0
+     */
+    public static function view_book_parameters() {
+        return new external_function_parameters(
+            array(
+                'bookid' => new external_value(PARAM_INT, 'book instance id'),
+                'chapterid' => new external_value(PARAM_INT, 'chapter id', VALUE_DEFAULT, 0)
+            )
+        );
+    }
+
+    /**
+     * Simulate the book/view.php web interface page: trigger events, completion, etc...
+     *
+     * @param int $bookid the book instance id
+     * @param int $chapterid the book chapter id
+     * @return array of warnings and status result
+     * @since Moodle 3.0
+     * @throws moodle_exception
+     */
+    public static function view_book($bookid, $chapterid = 0) {
+        global $DB, $CFG;
+        require_once($CFG->dirroot . "/mod/book/lib.php");
+        require_once($CFG->dirroot . "/mod/book/locallib.php");
+
+        $params = self::validate_parameters(self::view_book_parameters(),
+                                            array(
+                                                'bookid' => $bookid,
+                                                'chapterid' => $chapterid
+                                            ));
+        $bookid = $params['bookid'];
+        $chapterid = $params['chapterid'];
+
+        $warnings = array();
+
+        // Request and permission validation.
+        $book = $DB->get_record('book', array('id' => $bookid), '*', MUST_EXIST);
+        list($course, $cm) = get_course_and_cm_from_instance($book, 'book');
+
+        $context = context_module::instance($cm->id);
+        self::validate_context($context);
+
+        require_capability('mod/book:read', $context);
+
+        $chapters = book_preload_chapters($book);
+        $firstchapterid = 0;
+        $lastchapterid = 0;
+
+        foreach ($chapters as $ch) {
+            if ($ch->hidden) {
+                continue;
+            }
+            if (!$firstchapterid) {
+                $firstchapterid = $ch->id;
+            }
+            $lastchapterid = $ch->id;
+        }
+
+        if (!$chapterid) {
+            // Trigger the module viewed events since we are displaying the book.
+            book_view($book, null, false, $course, $cm, $context);
+            $chapterid = $firstchapterid;
+        }
+
+        // Check if book is empty (warning).
+        if (!$chapterid) {
+            $warnings[] = array(
+                'item' => 'book',
+                'itemid' => $book->id,
+                'warningcode' => '1',
+                'message' => get_string('nocontent', 'mod_book')
+            );
+        } else {
+            $chapter = $DB->get_record('book_chapters', array('id' => $chapterid, 'bookid' => $book->id));
+            $viewhidden = has_capability('mod/book:viewhiddenchapters', $context);
+
+            if (!$chapter or ($chapter->hidden and !$viewhidden)) {
+                throw new moodle_exception('errorchapter', 'mod_book');
+            }
+
+            // Trigger the chapter viewed event.
+            $islastchapter = ($chapter->id == $lastchapterid) ? true : false;
+            book_view($book, $chapter, $islastchapter, $course, $cm, $context);
+        }
+
+        $result = array();
+        $result['status'] = true;
+        $result['warnings'] = $warnings;
+        return $result;
+    }
+
+    /**
+     * Returns description of method result value
+     *
+     * @return external_description
+     * @since Moodle 3.0
+     */
+    public static function view_book_returns() {
+        return new external_single_structure(
+            array(
+                'status' => new external_value(PARAM_BOOL, 'status: true if success'),
+                'warnings' => new external_warnings()
+            )
+        );
+    }
+
+}

mod/book/db/services.php

+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Book external functions and service definitions.
+ *
+ * @package    mod_book
+ * @category   external
+ * @copyright  2015 Juan Leyva <juan@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ * @since      Moodle 3.0
+ */
+
+defined('MOODLE_INTERNAL') || die;
+
+$functions = array(
+
+    'mod_book_view_book' => array(
+        'classname'     => 'mod_book_external',
+        'methodname'    => 'view_book',
+        'description'   => 'Simulate the view.php web interface book: trigger events, completion, etc...',
+        'type'          => 'write',
+        'capabilities'  => 'mod/book:read'
+    ),
+
+);

mod/book/tests/externallib_test.php

+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * External mod_book functions unit tests
+ *
+ * @package    mod_book
+ * @category   external
+ * @copyright  2015 Juan Leyva <juan@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ * @since      Moodle 3.0
+ */
+
+defined('MOODLE_INTERNAL') || die();
+
+global $CFG;
+
+require_once($CFG->dirroot . '/webservice/tests/helpers.php');
+
+/**
+ * External mod_book functions unit tests
+ *
+ * @package    mod_book
+ * @category   external
+ * @copyright  2015 Juan Leyva <juan@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ * @since      Moodle 3.0
+ */
+class mod_book_external_testcase extends externallib_advanced_testcase {
+
+    /**
+     * Test view_book
+     */
+    public function test_view_book() {
+        global $DB;
+
+        $this->resetAfterTest(true);
+
+        $this->setAdminUser();
+        // Setup test data.
+        $course = $this->getDataGenerator()->create_course();
+        $book = $this->getDataGenerator()->create_module('book', array('course' => $course->id));
+        $bookgenerator = $this->getDataGenerator()->get_plugin_generator('mod_book');
+        $chapter = $bookgenerator->create_chapter(array('bookid' => $book->id));
+        $chapterhidden = $bookgenerator->create_chapter(array('bookid' => $book->id, 'hidden' => 1));
+
+        $context = context_module::instance($book->cmid);
+        $cm = get_coursemodule_from_instance('book', $book->id);
+
+        // Test invalid instance id.
+        try {
+            mod_book_external::view_book(0);
+            $this->fail('Exception expected due to invalid mod_book instance id.');
+        } catch (moodle_exception $e) {
+            $this->assertEquals('invalidrecord', $e->errorcode);
+        }
+
+        // Test not-enrolled user.
+        $user = self::getDataGenerator()->create_user();
+        $this->setUser($user);
+        try {
+            mod_book_external::view_book($book->id, 0);
+            $this->fail('Exception expected due to not enrolled user.');
+        } catch (moodle_exception $e) {
+            $this->assertEquals('requireloginerror', $e->errorcode);
+        }
+
+        // Test user with full capabilities.
+        $studentrole = $DB->get_record('role', array('shortname' => 'student'));
+        $this->getDataGenerator()->enrol_user($user->id, $course->id, $studentrole->id);
+
+        // Trigger and capture the event.
+        $sink = $this->redirectEvents();
+
+        $result = mod_book_external::view_book($book->id, 0);
+        $result = external_api::clean_returnvalue(mod_book_external::view_book_returns(), $result);
+
+        $events = $sink->get_events();
+        $this->assertCount(2, $events);
+        $event = array_shift($events);
+
+        // Checking that the event contains the expected values.
+        $this->assertInstanceOf('\mod_book\event\course_module_viewed', $event);
+        $this->assertEquals($context, $event->get_context());
+        $moodleurl = new \moodle_url('/mod/book/view.php', array('id' => $cm->id));
+        $this->assertEquals($moodleurl, $event->get_url());
+        $this->assertEventContextNotUsed($event);
+        $this->assertNotEmpty($event->get_name());
+
+        $event = array_shift($events);
+        $this->assertInstanceOf('\mod_book\event\chapter_viewed', $event);
+        $this->assertEquals($chapter->id, $event->objectid);
+
+        $result = mod_book_external::view_book($book->id, $chapter->id);
+        $result = external_api::clean_returnvalue(mod_book_external::view_book_returns(), $result);
+
+        $events = $sink->get_events();
+        // We expect a total of 3 events.
+        $this->assertCount(3, $events);
+
+        // Try to view a hidden chapter.
+        try {
+            mod_book_external::view_book($book->id, $chapterhidden->id);
+            $this->fail('Exception expected due to missing capability.');
+        } catch (moodle_exception $e) {
+            $this->assertEquals('errorchapter', $e->errorcode);
+        }
+
+        // Test user with no capabilities.
+        // We need a explicit prohibit since this capability is only defined in authenticated user and guest roles.
+        assign_capability('mod/book:read', CAP_PROHIBIT, $studentrole->id, $context->id);
+        accesslib_clear_all_caches_for_unit_testing();
+
+        try {
+            mod_book_external::view_book($book->id, 0);
+            $this->fail('Exception expected due to missing capability.');
+        } catch (moodle_exception $e) {
+            $this->assertEquals('nopermissions', $e->errorcode);
+        }
+
+    }
+}

mod/book/version.php

@@ -25,6 +25,6 @@
 defined('MOODLE_INTERNAL') || die;
 
 $plugin->component = 'mod_book'; // Full name of the plugin (used for diagnostics)
-$plugin->version   = 2015051100; // The current module version (Date: YYYYMMDDXX)
+$plugin->version   = 2015051101; // The current module version (Date: YYYYMMDDXX)
 $plugin->requires  = 2015050500; // Requires this Moodle version
 $plugin->cron      = 0;          // Period for cron to check this module (secs)

version.php

@@ -29,7 +29,7 @@
 
 defined('MOODLE_INTERNAL') || die();
 
-$version  = 2015090300.00;              // YYYYMMDD      = weekly release date of this DEV branch.
+$version  = 2015090300.01;              // YYYYMMDD      = weekly release date of this DEV branch.
                                         //         RR    = release increments - 00 in DEV branches.
                                         //           .XX = incremental changes.