2025SELab2-project-Dwengo/backend/src/services/learning-objects/processing/gift/gift-processor.ts

61 lines
2.7 KiB
TypeScript

/**
* Based on https://github.com/dwengovzw/Learning-Object-Repository/blob/main/app/processors/gift/gift_processor.js
*/
import DOMPurify from 'isomorphic-dompurify';
import { GIFTQuestion, parse } from 'gift-pegjs';
import { DwengoContentType } from '../content-type.js';
import { GIFTQuestionRenderer } from './question-renderers/gift-question-renderer.js';
import { MultipleChoiceQuestionRenderer } from './question-renderers/multiple-choice-question-renderer.js';
import { CategoryQuestionRenderer } from './question-renderers/category-question-renderer.js';
import { DescriptionQuestionRenderer } from './question-renderers/description-question-renderer.js';
import { EssayQuestionRenderer } from './question-renderers/essay-question-renderer.js';
import { MatchingQuestionRenderer } from './question-renderers/matching-question-renderer.js';
import { NumericalQuestionRenderer } from './question-renderers/numerical-question-renderer.js';
import { ShortQuestionRenderer } from './question-renderers/short-question-renderer.js';
import { TrueFalseQuestionRenderer } from './question-renderers/true-false-question-renderer.js';
import { StringProcessor } from '../string-processor.js';
class GiftProcessor extends StringProcessor {
private renderers: RendererMap = {
Category: new CategoryQuestionRenderer(),
Description: new DescriptionQuestionRenderer(),
Essay: new EssayQuestionRenderer(),
Matching: new MatchingQuestionRenderer(),
Numerical: new NumericalQuestionRenderer(),
Short: new ShortQuestionRenderer(),
TF: new TrueFalseQuestionRenderer(),
MC: new MultipleChoiceQuestionRenderer(),
};
constructor() {
super(DwengoContentType.GIFT);
}
override renderFn(giftString: string): string {
const quizQuestions: GIFTQuestion[] = parse(giftString);
let html = "<div class='learning-object-gift'>\n";
let i = 1;
for (const question of quizQuestions) {
html += ` <div class='gift-question' id='gift-q${i}'>\n`;
html += ' ' + this.renderQuestion(question, i).replaceAll(/\n(.+)/g, '\n $1'); // Replace for indentation.
html += ` </div>\n`;
i++;
}
html += '</div>\n';
return DOMPurify.sanitize(html);
}
private renderQuestion<T extends GIFTQuestion>(question: T, questionNumber: number): string {
const renderer = this.renderers[question.type] as GIFTQuestionRenderer<T>;
return renderer.render(question, questionNumber);
}
}
type RendererMap = {
[K in GIFTQuestion['type']]: GIFTQuestionRenderer<Extract<GIFTQuestion, { type: K }>>;
};
export default GiftProcessor;