cf6fb97bf0
- Introduced new models: `GuideLine`, `Incident`, `PlotPoint`, `Issue`, `Act`, and `World` for managing book-related entities. - Integrated encryption/decryption for sensitive properties in all models using user-specific keys. - Added methods for CRUD operations and synchronization workflows with error handling and multilingual support. - Improved maintainability with JSDoc comments and streamlined queries.
63 lines
2.9 KiB
TypeScript
63 lines
2.9 KiB
TypeScript
import * as fs from 'fs';
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import * as path from 'path';
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import { getUserEncryptionKey } from "../keyManager.js";
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import System from "../System.js";
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import BookRepo, { BookCoverQuery } from "../repositories/book.repository.js";
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/**
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* Cover model class for managing book cover images.
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* Provides methods to retrieve, decrypt, and delete cover pictures.
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*/
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export default class Cover {
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/**
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* Retrieves and decrypts the cover picture for a specific book.
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* @param userId - The unique identifier of the user
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* @param bookId - The unique identifier of the book
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* @param lang - The language for error messages ('fr' or 'en')
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* @returns The decrypted cover image data, or an empty string if not found
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*/
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public static async getCoverPicture(userId: string, bookId: string, lang: 'fr' | 'en' = 'fr'): Promise<string> {
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const coverQuery: BookCoverQuery = BookRepo.fetchBookCover(userId, bookId, lang);
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if (coverQuery) {
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const userEncryptionKey: string = getUserEncryptionKey(userId);
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return System.decryptDataWithUserKey(coverQuery.cover_image, userEncryptionKey);
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} else {
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return '';
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}
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}
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/**
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* Deletes the cover picture association for a specific book.
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* Clears the cover image reference in the database.
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* @param userId - The unique identifier of the user
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* @param bookId - The unique identifier of the book
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* @param lang - The language for error messages ('fr' or 'en')
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* @returns True if the cover was successfully deleted, false otherwise
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*/
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public static async deleteCoverPicture(userId: string, bookId: string, lang: 'fr' | 'en' = 'fr'): Promise<boolean> {
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const existingCoverName: string = await Cover.getCoverPicture(userId, bookId, lang);
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return BookRepo.updateBookCover(bookId, '', userId, lang);
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}
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/**
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* Retrieves and decrypts a picture file, returning it as a base64-encoded string.
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* @param userId - The unique identifier of the user
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* @param userKey - The user's encryption key for decrypting the image path
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* @param image - The encrypted image file path
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* @param lang - The language for error messages ('fr' or 'en')
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* @returns The base64-encoded image data, or an empty string if the image cannot be read
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*/
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public static getPicture(userId: string, userKey: string, image: string, lang: 'fr' | 'en' = 'fr'): string {
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if (!image) return '';
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try {
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const decryptedFileName: string = System.decryptDataWithUserKey(image, userKey);
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const userDirectory: string = path.join('');
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fs.accessSync(userDirectory, fs.constants.R_OK);
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const fileData: Buffer = fs.readFileSync(userDirectory);
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return fileData.toString('base64');
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} catch (error: unknown) {
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return '';
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}
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}
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}
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