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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* The helper module or AI Subsystem.
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*
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* @module core_ai/helper
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* @copyright 2024 Huong Nguyen <huongnv13@gmail.com>
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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export default class AIHelper {
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/**
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* Replace double line breaks with <br> and with </p><p> for paragraphs.
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* This is to handle the difference in response from the AI to what is expected by the editor.
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*
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* @param {String} text The text to replace.
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* @returns {String}
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*/
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static replaceLineBreaks(text) {
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// Replace double line breaks with </p><p> for paragraphs
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const textWithParagraphs = text.replace(/\n{2,}|\r\n/g, '<br/><br/>');
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// Replace remaining single line breaks with <br> tags
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const textWithBreaks = textWithParagraphs.replace(/\n/g, '<br/>');
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// Add opening and closing <p> tags to wrap the entire content
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return `<p>${textWithBreaks}</p>`;
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}
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/**
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* Replace markdown formatting.
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* Even when asked not to, AI models will sometimes return markdown.
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*
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* @param {String} text The text to replace.
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* @returns {String}
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*/
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static replaceMarkdown(text) {
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// Replace markdown bold formatting HTML equivalent.
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const textWithMarkdown = text.replace(/\*\*(.*?)\*\*/g, '<strong>$1</strong>');
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return textWithMarkdown;
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}
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/**
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* Format the response provided by the AI model.
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*
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* @param {String} text The text to format.
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* @returns {String}
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*/
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static formatResponse(text) {
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let formattedText = this.replaceLineBreaks(text) ;
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formattedText = this.replaceMarkdown(formattedText);
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return formattedText;
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}
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}
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