feat(services): enhance user service functions

- Modified the logic in `getUserByEmail` to handle multiple user instances.
- Altered the dob field to save as current date in inserted user records.
- Richened `getByEmailService` function to check email existence in the database.
- Adjusted `is_mail_verified` flag to `is_email_verified` within user insertion function.

Issue: #18
Signed-off-by: Mathis <yidhra@tuta.io>

src/services/user.service.ts

@@ -26,14 +26,18 @@ const DbHandler = new MySqlService.Handler("UserService");
 async function getUserByEmail(targetEmail: string): Promise<IDbUser | ISError> {
 	try {
 		const dbUser = await MySqlService.User.getByEmail(DbHandler, targetEmail);
-		if (dbUser === undefined) {
+		if (dbUser.length === 0) {
 			logger.info(`\n\n> User not found (${targetEmail})\n`);
 			return {
 				error: ErrorType.NotFound,
 				message: "The user was not fund.",
 			};
 		}
-		return dbUser;
+		if (dbUser.length === 1 && dbUser[0]) return dbUser[0];
+		return {
+			error: ErrorType.ServiceError,
+			message: "To many user found, suspicious.",
+		};
 	} catch (err) {
 		logger.error(err);
 		return {
@@ -135,17 +139,18 @@ async function register(inputData: IReqRegister): Promise<ISError | string> {
 			};
 		}
 		const currentId = v4();
+		logger.info(`\n\n> Trying to insert a new user... (${currentId})\n`);
 		const NewUser = await MySqlService.User.insert(DbHandler, {
 			id: currentId,
 			email: inputData.email,
 			username: inputData.username,
 			firstname: inputData.firstName,
 			lastname: inputData.lastName,
-			dob: inputData.dob,
+			dob: new Date(),
 			hash: passwordHash,
 			gdpr: currentDate,
 			is_admin: false,
-			is_mail_verified: false,
+			is_email_verified: false,
 		});
 		if ("error" in NewUser || NewUser.affectedRows === 0) {
 			return {
@@ -240,6 +245,16 @@ async function login(inputData: IReqLogin): Promise<ISError | string> {
 	}
 }
 
+async function getByEmailService(email: string): Promise<IDbUser | false> {
+	const dbUser = await MySqlService.User.getByEmail(DbHandler, email);
+	if (dbUser === undefined) {
+		logger.trace(`\n\n> User not found in DB (${email})\n`);
+		return false;
+	}
+	logger.trace(dbUser);
+	return dbUser;
+}
+
 //TOTest
 /**
  * Retrieves all users from the database.
@@ -318,6 +333,7 @@ const UserService = {
 	login: login,
 	getAll: getAllUsersService,
 	getFromId: getUserFromIdService,
+	getByEmail: getByEmailService,
 	edit: editUserService,
 	delete: deleteUserService,
 };