fix FileService to compute file hash in create

src/services/common/CryptoService/CryptoService.ts

@@ -15,6 +15,10 @@ export default class CryptoService extends BaseService {
 		return crypto.createHash("sha256").update(String(key)).digest("base64").slice(0, 32);
 	}
 
+	public async getHash(buffer: Buffer): Promise<string> {
+		return crypto.createHash("sha256").update(buffer).digest("hex");
+	}
+
 	/**
 	 * @description : encrypt data
 	 * @throws {Error} If data cannot be encrypted

src/services/common/FilesService/FilesService.ts

@@ -71,12 +71,15 @@ export default class FilesService extends BaseService {
 	public async create(file: File, fileData: Express.Multer.File) {
 		const key = v4();
 		const encryptedFile = await this.cryptoService.encrypt(fileData.buffer, key);
+		const hash = await this.cryptoService.getHash(fileData.buffer);
+
 		const upload = await this.ipfsService.pinFile(Readable.from(encryptedFile), fileData.originalname);
 		let fileToCreate: File = file;
 		fileToCreate.file_name = fileData.originalname;
 		fileToCreate.file_path = this.variables.PINATA_GATEWAY.concat(upload.IpfsHash);
 		fileToCreate.mimetype = fileData.mimetype;
 		fileToCreate.size = fileData.size;
+		fileToCreate.hash = hash;
 		fileToCreate.archived_at = null;
 
 		return this.filesRepository.create(fileToCreate, key);