import { v4 as uuidv4 } from 'uuid'; import sha256 from 'js-sha256'; ////////////////////////// // Helper functions ////////////////////////// export const splitStream = (splitOn) => { let buffer = ''; return new TransformStream({ transform(chunk, controller) { buffer += chunk; const parts = buffer.split(splitOn); parts.slice(0, -1).forEach((part) => controller.enqueue(part)); buffer = parts[parts.length - 1]; }, flush(controller) { if (buffer) controller.enqueue(buffer); } }); }; export const convertMessagesToHistory = (messages) => { const history = { messages: {}, currentId: null }; let parentMessageId = null; let messageId = null; for (const message of messages) { messageId = uuidv4(); if (parentMessageId !== null) { history.messages[parentMessageId].childrenIds = [ ...history.messages[parentMessageId].childrenIds, messageId ]; } history.messages[messageId] = { ...message, id: messageId, parentId: parentMessageId, childrenIds: [] }; parentMessageId = messageId; } history.currentId = messageId; return history; }; export const getGravatarURL = (email) => { // Trim leading and trailing whitespace from // an email address and force all characters // to lower case const address = String(email).trim().toLowerCase(); // Create a SHA256 hash of the final string const hash = sha256(address); // Grab the actual image URL return `https://www.gravatar.com/avatar/${hash}`; }; export const copyToClipboard = (text) => { if (!navigator.clipboard) { const textArea = document.createElement('textarea'); textArea.value = text; // Avoid scrolling to bottom textArea.style.top = '0'; textArea.style.left = '0'; textArea.style.position = 'fixed'; document.body.appendChild(textArea); textArea.focus(); textArea.select(); try { const successful = document.execCommand('copy'); const msg = successful ? 'successful' : 'unsuccessful'; console.log('Fallback: Copying text command was ' + msg); } catch (err) { console.error('Fallback: Oops, unable to copy', err); } document.body.removeChild(textArea); return; } navigator.clipboard.writeText(text).then( function () { console.log('Async: Copying to clipboard was successful!'); }, function (err) { console.error('Async: Could not copy text: ', err); } ); }; export const checkVersion = (required, current) => { // Returns true when current version is below required return current === '0.0.0' ? false : current.localeCompare(required, undefined, { numeric: true, sensitivity: 'case', caseFirst: 'upper' }) < 0; }; export const findWordIndices = (text) => { const regex = /\[([^\]]+)\]/g; const matches = []; let match; while ((match = regex.exec(text)) !== null) { matches.push({ word: match[1], startIndex: match.index, endIndex: regex.lastIndex - 1 }); } return matches; }; export const calculateSHA256 = async (file) => { console.log(file); // Create a FileReader to read the file asynchronously const reader = new FileReader(); // Define a promise to handle the file reading const readFile = new Promise((resolve, reject) => { reader.onload = () => resolve(reader.result); reader.onerror = reject; }); // Read the file as an ArrayBuffer reader.readAsArrayBuffer(file); try { // Wait for the FileReader to finish reading the file const buffer = await readFile; // Convert the ArrayBuffer to a Uint8Array const uint8Array = new Uint8Array(buffer); // Calculate the SHA-256 hash using Web Crypto API const hashBuffer = await crypto.subtle.digest('SHA-256', uint8Array); // Convert the hash to a hexadecimal string const hashArray = Array.from(new Uint8Array(hashBuffer)); const hashHex = hashArray.map((byte) => byte.toString(16).padStart(2, '0')).join(''); return `sha256:${hashHex}`; } catch (error) { console.error('Error calculating SHA-256 hash:', error); throw error; } };