MOBILE-2348 quiz: Implement prefetch handler
Dani Palou
parent
02f25f50ac
commit
32c66f222f
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// (C) Copyright 2015 Martin Dougiamas
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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import { Injectable, Injector } from '@angular/core';
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import { CoreTextUtilsProvider } from '@providers/utils/text';
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import { CoreQuestionHelperProvider } from '@core/question/providers/helper';
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import { CoreCourseModulePrefetchHandlerBase } from '@core/course/classes/module-prefetch-handler';
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import { AddonModQuizProvider } from './quiz';
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import { AddonModQuizHelperProvider } from './helper';
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import { AddonModQuizAccessRuleDelegate } from './access-rules-delegate';
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import { AddonModQuizSyncProvider } from './quiz-sync';
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import { CoreConstants } from '@core/constants';
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/**
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* Handler to prefetch quizzes.
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*/
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@Injectable()
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export class AddonModQuizPrefetchHandler extends CoreCourseModulePrefetchHandlerBase {
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name = 'AddonModQuiz';
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modName = 'quiz';
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component = AddonModQuizProvider.COMPONENT;
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updatesNames = /^configuration$|^.*files$|^grades$|^gradeitems$|^questions$|^attempts$/;
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protected syncProvider: AddonModQuizSyncProvider; // It will be injected later to prevent circular dependencies.
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constructor(protected injector: Injector, protected quizProvider: AddonModQuizProvider,
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protected textUtils: CoreTextUtilsProvider, protected quizHelper: AddonModQuizHelperProvider,
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protected accessRuleDelegate: AddonModQuizAccessRuleDelegate, protected questionHelper: CoreQuestionHelperProvider) {
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super(injector);
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}
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/**
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* Download the module.
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*
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* @param {any} module The module object returned by WS.
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* @param {number} courseId Course ID.
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* @param {string} [dirPath] Path of the directory where to store all the content files. @see downloadOrPrefetch.
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* @return {Promise<any>} Promise resolved when all content is downloaded.
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*/
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download(module: any, courseId: number, dirPath?: string): Promise<any> {
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// Same implementation for download or prefetch.
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return this.prefetch(module, courseId, false, dirPath);
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}
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/**
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* Get the download size of a module.
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*
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* @param {any} module Module.
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* @param {Number} courseId Course ID the module belongs to.
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* @param {boolean} [single] True if we're downloading a single module, false if we're downloading a whole section.
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* @return {Promise<{size: number, total: boolean}>} Promise resolved with the size and a boolean indicating if it was able
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* to calculate the total size.
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*/
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getDownloadSize(module: any, courseId: any, single?: boolean): Promise<{ size: number, total: boolean }> {
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return Promise.resolve({
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size: -1,
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total: false
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});
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}
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/**
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* Get list of files. If not defined, we'll assume they're in module.contents.
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*
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* @param {any} module Module.
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* @param {Number} courseId Course ID the module belongs to.
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* @param {boolean} [single] True if we're downloading a single module, false if we're downloading a whole section.
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* @return {Promise<any[]>} Promise resolved with the list of files.
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*/
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getFiles(module: any, courseId: number, single?: boolean): Promise<any[]> {
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return Promise.resolve([]);
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}
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/**
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* Gather some preflight data for an attempt. This function will start a new attempt if needed.
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*
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* @param {any} quiz Quiz.
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* @param {any} accessInfo Quiz access info returned by AddonModQuizProvider.getQuizAccessInformation.
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* @param {any} [attempt] Attempt to continue. Don't pass any value if the user needs to start a new attempt.
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* @param {boolean} [askPreflight] Whether it should ask for preflight data if needed.
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* @param {string} [modalTitle] Lang key of the title to set to preflight modal (e.g. 'addon.mod_quiz.startattempt').
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* @param {string} [siteId] Site ID. If not defined, current site.
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* @return {Promise<any>} Promise resolved with the preflight data.
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*/
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getPreflightData(quiz: any, accessInfo: any, attempt?: any, askPreflight?: boolean, title?: string, siteId?: string)
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: Promise<any> {
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const preflightData = {};
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let promise;
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if (askPreflight) {
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// We can ask preflight, check if it's needed and get the data.
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promise = this.quizHelper.getAndCheckPreflightData(
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quiz, accessInfo, preflightData, attempt, false, true, title, siteId);
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} else {
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// Get some fixed preflight data from access rules (data that doesn't require user interaction).
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const rules = accessInfo.activerulenames;
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promise = this.accessRuleDelegate.getFixedPreflightData(rules, quiz, preflightData, attempt, true, siteId).then(() => {
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if (!attempt) {
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// We need to create a new attempt.
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return this.quizProvider.startAttempt(quiz.id, preflightData, false, siteId);
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}
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});
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}
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return promise.then(() => {
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return preflightData;
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});
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}
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/**
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* Invalidate the prefetched content.
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*
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* @param {number} moduleId The module ID.
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* @param {number} courseId The course ID the module belongs to.
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* @return {Promise<any>} Promise resolved when the data is invalidated.
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*/
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invalidateContent(moduleId: number, courseId: number): Promise<any> {
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return this.quizProvider.invalidateContent(moduleId, courseId);
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}
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/**
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* Invalidate WS calls needed to determine module status.
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*
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* @param {any} module Module.
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* @param {number} courseId Course ID the module belongs to.
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* @return {Promise<any>} Promise resolved when invalidated.
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*/
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invalidateModule(module: any, courseId: number): Promise<any> {
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// Invalidate the calls required to check if a quiz is downloadable.
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const promises = [];
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promises.push(this.quizProvider.invalidateQuizData(courseId));
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promises.push(this.quizProvider.invalidateUserAttemptsForUser(module.instance));
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return Promise.all(promises);
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}
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/**
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* Check if a module can be downloaded. If the function is not defined, we assume that all modules are downloadable.
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*
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* @param {any} module Module.
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* @param {number} courseId Course ID the module belongs to.
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* @return {boolean|Promise<boolean>} Whether the module can be downloaded. The promise should never be rejected.
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*/
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isDownloadable(module: any, courseId: number): boolean | Promise<boolean> {
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const siteId = this.sitesProvider.getCurrentSiteId();
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return this.quizProvider.getQuiz(courseId, module.id, false, siteId).then((quiz) => {
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if (quiz.allowofflineattempts !== 1 || quiz.hasquestions === 0) {
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return false;
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}
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// Not downloadable if we reached max attempts or the quiz has an unfinished attempt.
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return this.quizProvider.getUserAttempts(quiz.id, undefined, true, false, false, siteId).then((attempts) => {
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const isLastFinished = !attempts.length || this.quizProvider.isAttemptFinished(attempts[attempts.length - 1].state);
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return quiz.attempts === 0 || quiz.attempts > attempts.length || !isLastFinished;
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});
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});
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}
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/**
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* Whether or not the handler is enabled on a site level.
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*
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* @return {boolean|Promise<boolean>} A boolean, or a promise resolved with a boolean, indicating if the handler is enabled.
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*/
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isEnabled(): boolean | Promise<boolean> {
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return this.quizProvider.isPluginEnabled();
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}
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/**
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* Prefetch a module.
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*
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* @param {any} module Module.
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* @param {number} courseId Course ID the module belongs to.
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* @param {boolean} [single] True if we're downloading a single module, false if we're downloading a whole section.
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* @param {string} [dirPath] Path of the directory where to store all the content files. @see downloadOrPrefetch.
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* @return {Promise<any>} Promise resolved when done.
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*/
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prefetch(module: any, courseId?: number, single?: boolean, dirPath?: string): Promise<any> {
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return this.prefetchPackage(module, courseId, single, this.prefetchQuiz.bind(this));
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}
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/**
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* Prefetch a quiz.
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*
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* @param {any} module Module.
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* @param {number} courseId Course ID the module belongs to.
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* @param {boolean} single True if we're downloading a single module, false if we're downloading a whole section.
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* @param {String} siteId Site ID.
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* @return {Promise<any>} Promise resolved when done.
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*/
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protected prefetchQuiz(module: any, courseId: number, single: boolean, siteId: string): Promise<any> {
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let attempts: any[],
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startAttempt = false,
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quiz,
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quizAccessInfo,
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attemptAccessInfo,
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preflightData;
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// Get quiz.
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return this.quizProvider.getQuiz(courseId, module.id, false, siteId).then((quizData) => {
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quiz = quizData;
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const promises = [],
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introFiles = this.getIntroFilesFromInstance(module, quiz);
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// Prefetch some quiz data.
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promises.push(this.quizProvider.getQuizAccessInformation(quiz.id, false, true, siteId).then((info) => {
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quizAccessInfo = info;
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}));
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promises.push(this.quizProvider.getQuizRequiredQtypes(quiz.id, true, siteId));
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promises.push(this.quizProvider.getUserAttempts(quiz.id, 'all', true, false, true, siteId).then((atts) => {
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attempts = atts;
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}));
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promises.push(this.quizProvider.getAttemptAccessInformation(quiz.id, 0, false, true, siteId).then((info) => {
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attemptAccessInfo = info;
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}));
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promises.push(this.filepoolProvider.addFilesToQueue(siteId, introFiles, AddonModQuizProvider.COMPONENT, module.id));
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return Promise.all(promises);
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}).then(() => {
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// Check if we need to start a new attempt.
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const attempt = attempts[attempts.length - 1];
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if (!attempt || this.quizProvider.isAttemptFinished(attempt.state)) {
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// Check if the user can attempt the quiz.
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if (attemptAccessInfo.preventnewattemptreasons.length) {
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return Promise.reject(this.textUtils.buildMessage(attemptAccessInfo.preventnewattemptreasons));
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}
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startAttempt = true;
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}
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// Get the preflight data. This function will also start a new attempt if needed.
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return this.getPreflightData(quiz, quizAccessInfo, attempt, single, 'core.download', siteId);
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}).then((data) => {
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preflightData = data;
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const promises = [];
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if (startAttempt) {
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// Re-fetch user attempts since we created a new one.
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promises.push(this.quizProvider.getUserAttempts(quiz.id, 'all', true, false, true, siteId).then((atts) => {
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attempts = atts;
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}));
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// Update the download time to prevent detecting the new attempt as an update.
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promises.push(this.filepoolProvider.updatePackageDownloadTime(siteId, AddonModQuizProvider.COMPONENT, module.id)
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.catch(() => {
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// Ignore errors.
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}));
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}
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// Fetch attempt related data.
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promises.push(this.quizProvider.getCombinedReviewOptions(quiz.id, true, siteId));
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promises.push(this.quizProvider.getUserBestGrade(quiz.id, true, siteId));
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promises.push(this.quizProvider.getGradeFromGradebook(courseId, module.id, true, siteId).then((gradebookData) => {
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if (typeof gradebookData.graderaw != 'undefined') {
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return this.quizProvider.getFeedbackForGrade(quiz.id, gradebookData.graderaw, true, siteId);
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}
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}).catch(() => {
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// Ignore errors.
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}));
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promises.push(this.quizProvider.getAttemptAccessInformation(quiz.id, 0, false, true, siteId)); // Last attempt.
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return Promise.all(promises);
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}).then(() => {
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// We have quiz data, now we'll get specific data for each attempt.
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const promises = [];
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attempts.forEach((attempt) => {
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promises.push(this.prefetchAttempt(quiz, attempt, preflightData, siteId));
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});
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return Promise.all(promises);
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}).then(() => {
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// If there's nothing to send, mark the quiz as synchronized.
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// We don't return the promises because it should be fast and we don't want to block the user for this.
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if (!this.syncProvider) {
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this.syncProvider = this.injector.get(AddonModQuizSyncProvider);
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}
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this.syncProvider.hasDataToSync(quiz.id, siteId).then((hasData) => {
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if (!hasData) {
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this.syncProvider.setSyncTime(quiz.id, siteId);
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}
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});
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});
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}
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/**
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* Prefetch all WS data for an attempt.
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*
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* @param {any} quiz Quiz.
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* @param {any} attempt Attempt.
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* @param {any} preflightData Preflight required data (like password).
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* @param {string} [siteId] Site ID. If not defined, current site.
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* @return {Promise<any>} Promise resolved when the prefetch is finished. Data returned is not reliable.
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*/
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prefetchAttempt(quiz: any, attempt: any, preflightData: any, siteId?: string): Promise<any> {
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const pages = this.quizProvider.getPagesFromLayout(attempt.layout),
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promises = [],
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isSequential = this.quizProvider.isNavigationSequential(quiz);
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if (this.quizProvider.isAttemptFinished(attempt.state)) {
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// Attempt is finished, get feedback and review data.
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const attemptGrade = this.quizProvider.rescaleGrade(attempt.sumgrades, quiz, false);
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if (typeof attemptGrade != 'undefined') {
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promises.push(this.quizProvider.getFeedbackForGrade(quiz.id, Number(attemptGrade), true, siteId));
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}
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// Get the review for each page.
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pages.forEach((page) => {
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promises.push(this.quizProvider.getAttemptReview(attempt.id, page, true, siteId).catch(() => {
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// Ignore failures, maybe the user can't review the attempt.
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}));
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});
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// Get the review for all questions in same page.
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promises.push(this.quizProvider.getAttemptReview(attempt.id, -1, true, siteId).then((data) => {
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// Download the files inside the questions.
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const questionPromises = [];
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data.questions.forEach((question) => {
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questionPromises.push(this.questionHelper.prefetchQuestionFiles(
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question, this.component, quiz.coursemodule, siteId));
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});
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return Promise.all(questionPromises);
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}, () => {
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// Ignore failures, maybe the user can't review the attempt.
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}));
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} else {
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// Attempt not finished, get data needed to continue the attempt.
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promises.push(this.quizProvider.getAttemptAccessInformation(quiz.id, attempt.id, false, true, siteId));
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promises.push(this.quizProvider.getAttemptSummary(attempt.id, preflightData, false, true, false, siteId));
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if (attempt.state == AddonModQuizProvider.ATTEMPT_IN_PROGRESS) {
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// Get data for each page.
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pages.forEach((page) => {
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if (isSequential && page < attempt.currentpage) {
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// Sequential quiz, cannot get pages before the current one.
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return;
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}
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promises.push(this.quizProvider.getAttemptData(attempt.id, page, preflightData, false, true, siteId)
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.then((data) => {
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// Download the files inside the questions.
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const questionPromises = [];
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data.questions.forEach((question) => {
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questionPromises.push(this.questionHelper.prefetchQuestionFiles(
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question, this.component, quiz.coursemodule, siteId));
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});
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return Promise.all(questionPromises);
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}));
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});
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}
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}
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return Promise.all(promises);
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}
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/**
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* Prefetches some data for a quiz and its last attempt.
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* This function will NOT start a new attempt, it only reads data for the quiz and the last attempt.
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*
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* @param {any} quiz Quiz.
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* @param {boolean} [askPreflight] Whether it should ask for preflight data if needed.
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* @param {string} [siteId] Site ID. If not defined, current site.
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* @return {Promise<any>} Promise resolved when done.
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*/
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prefetchQuizAndLastAttempt(quiz: any, askPreflight?: boolean, siteId?: string): Promise<any> {
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siteId = siteId || this.sitesProvider.getCurrentSiteId();
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const promises = [];
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let attempts,
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quizAccessInfo,
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preflightData,
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lastAttempt;
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// Get quiz data.
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promises.push(this.quizProvider.getQuizAccessInformation(quiz.id, false, true, siteId).then((info) => {
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quizAccessInfo = info;
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}));
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promises.push(this.quizProvider.getQuizRequiredQtypes(quiz.id, true, siteId));
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promises.push(this.quizProvider.getCombinedReviewOptions(quiz.id, true, siteId));
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promises.push(this.quizProvider.getUserBestGrade(quiz.id, true, siteId));
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promises.push(this.quizProvider.getUserAttempts(quiz.id, 'all', true, false, true, siteId).then((atts) => {
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attempts = atts;
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}));
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promises.push(this.quizProvider.getGradeFromGradebook(quiz.course, quiz.coursemodule, true, siteId)
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.then((gradebookData) => {
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if (typeof gradebookData.grade != 'undefined') {
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return this.quizProvider.getFeedbackForGrade(quiz.id, gradebookData.graderaw, true, siteId);
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}
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}));
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promises.push(this.quizProvider.getAttemptAccessInformation(quiz.id, 0, false, true, siteId)); // Last attempt.
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return Promise.all(promises).then(() => {
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lastAttempt = attempts[attempts.length - 1];
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if (!lastAttempt) {
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// No need to get attempt data, we don't need preflight data.
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return;
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}
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// Get the preflight data.
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return this.getPreflightData(quiz, quizAccessInfo, lastAttempt, askPreflight, 'core.download', siteId);
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}).then((data) => {
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preflightData = data;
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||||
|
||||
if (lastAttempt) {
|
||||
// Get data for last attempt.
|
||||
return this.prefetchAttempt(quiz, lastAttempt, preflightData, siteId);
|
||||
}
|
||||
}).then(() => {
|
||||
// Prefetch finished, get current status to determine if we need to change it.
|
||||
|
||||
return this.filepoolProvider.getPackageStatus(siteId, this.component, quiz.coursemodule);
|
||||
}).then((status) => {
|
||||
if (status !== CoreConstants.NOT_DOWNLOADED) {
|
||||
// Quiz was downloaded, set the new status.
|
||||
// If no attempts or last is finished we'll mark it as not downloaded to show download icon.
|
||||
const isLastFinished = !lastAttempt || this.quizProvider.isAttemptFinished(lastAttempt.state),
|
||||
newStatus = isLastFinished ? CoreConstants.NOT_DOWNLOADED : CoreConstants.DOWNLOADED;
|
||||
|
||||
return this.filepoolProvider.storePackageStatus(siteId, newStatus, this.component, quiz.coursemodule);
|
||||
}
|
||||
});
|
||||
}
|
||||
}
|
||||
|
|
@ -13,9 +13,15 @@
|
|||
// limitations under the License.
|
||||
|
||||
import { NgModule } from '@angular/core';
|
||||
import { CoreCronDelegate } from '@providers/cron';
|
||||
import { CoreCourseModulePrefetchDelegate } from '@core/course/providers/module-prefetch-delegate';
|
||||
import { AddonModQuizAccessRuleDelegate } from './providers/access-rules-delegate';
|
||||
import { AddonModQuizProvider } from './providers/quiz';
|
||||
import { AddonModQuizOfflineProvider } from './providers/quiz-offline';
|
||||
import { AddonModQuizHelperProvider } from './providers/helper';
|
||||
import { AddonModQuizSyncProvider } from './providers/quiz-sync';
|
||||
import { AddonModQuizPrefetchHandler } from './providers/prefetch-handler';
|
||||
import { AddonModQuizSyncCronHandler } from './providers/sync-cron-handler';
|
||||
|
||||
@NgModule({
|
||||
declarations: [
|
||||
|
|
@ -25,7 +31,18 @@ import { AddonModQuizOfflineProvider } from './providers/quiz-offline';
|
|||
providers: [
|
||||
AddonModQuizAccessRuleDelegate,
|
||||
AddonModQuizProvider,
|
||||
AddonModQuizOfflineProvider
|
||||
AddonModQuizOfflineProvider,
|
||||
AddonModQuizHelperProvider,
|
||||
AddonModQuizSyncProvider,
|
||||
AddonModQuizPrefetchHandler,
|
||||
AddonModQuizSyncCronHandler
|
||||
]
|
||||
})
|
||||
export class AddonModQuizModule { }
|
||||
export class AddonModQuizModule {
|
||||
constructor(prefetchDelegate: CoreCourseModulePrefetchDelegate, prefetchHandler: AddonModQuizPrefetchHandler,
|
||||
cronDelegate: CoreCronDelegate, syncHandler: AddonModQuizSyncCronHandler) {
|
||||
|
||||
prefetchDelegate.registerHandler(prefetchHandler);
|
||||
cronDelegate.register(syncHandler);
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -14,9 +14,11 @@
|
|||
|
||||
import { Injectable, EventEmitter } from '@angular/core';
|
||||
import { TranslateService } from '@ngx-translate/core';
|
||||
import { CoreFilepoolProvider } from '@providers/filepool';
|
||||
import { CoreSitesProvider } from '@providers/sites';
|
||||
import { CoreDomUtilsProvider } from '@providers/utils/dom';
|
||||
import { CoreTextUtilsProvider } from '@providers/utils/text';
|
||||
import { CoreUrlUtilsProvider } from '@providers/utils/url';
|
||||
import { CoreQuestionProvider } from './question';
|
||||
|
||||
/**
|
||||
|
|
@ -29,7 +31,8 @@ export class CoreQuestionHelperProvider {
|
|||
|
||||
constructor(private domUtils: CoreDomUtilsProvider, private textUtils: CoreTextUtilsProvider,
|
||||
private questionProvider: CoreQuestionProvider, private sitesProvider: CoreSitesProvider,
|
||||
private translate: TranslateService) { }
|
||||
private translate: TranslateService, private urlUtils: CoreUrlUtilsProvider,
|
||||
private filepoolProvider: CoreFilepoolProvider) { }
|
||||
|
||||
/**
|
||||
* Add a behaviour button to the question's "behaviourButtons" property.
|
||||
|
|
@ -428,6 +431,43 @@ export class CoreQuestionHelperProvider {
|
|||
question.html = form.innerHTML;
|
||||
}
|
||||
|
||||
/**
|
||||
* Prefetch the files in a question HTML.
|
||||
*
|
||||
* @param {any} question Question.
|
||||
* @param {string} [component] The component to link the files to. If not defined, question component.
|
||||
* @param {string|number} [componentId] An ID to use in conjunction with the component. If not defined, question ID.
|
||||
* @param {string} [siteId] Site ID. If not defined, current site.
|
||||
* @return {Promise<any>} Promise resolved when all the files have been downloaded.
|
||||
*/
|
||||
prefetchQuestionFiles(question: any, component?: string, componentId?: string | number, siteId?: string): Promise<any> {
|
||||
const urls = this.domUtils.extractDownloadableFilesFromHtml(question.html);
|
||||
|
||||
if (!component) {
|
||||
component = CoreQuestionProvider.COMPONENT;
|
||||
componentId = question.id;
|
||||
}
|
||||
|
||||
return this.sitesProvider.getSite(siteId).then((site) => {
|
||||
const promises = [];
|
||||
|
||||
urls.forEach((url) => {
|
||||
if (!site.canDownloadFiles() && this.urlUtils.isPluginFileUrl(url)) {
|
||||
return;
|
||||
}
|
||||
|
||||
if (url.indexOf('theme/image.php') > -1 && url.indexOf('flagged') > -1) {
|
||||
// Ignore flag images.
|
||||
return;
|
||||
}
|
||||
|
||||
promises.push(this.filepoolProvider.addToQueueByUrl(siteId, url, component, componentId));
|
||||
});
|
||||
|
||||
return Promise.all(promises);
|
||||
});
|
||||
}
|
||||
|
||||
/**
|
||||
* Replace Moodle's correct/incorrect classes with the Mobile ones.
|
||||
*
|
||||
|
|
|
|||
|
|
@ -58,6 +58,8 @@ export interface CoreQuestionState {
|
|||
*/
|
||||
@Injectable()
|
||||
export class CoreQuestionProvider {
|
||||
static COMPONENT = 'mmQuestion';
|
||||
|
||||
// Variables for database.
|
||||
protected QUESTION_TABLE = 'questions';
|
||||
protected QUESTION_ANSWERS_TABLE = 'question_answers';
|
||||
|
|
|
|||
Loading…
Reference in New Issue