add generate and hash password

internal/services/users_service/service.go

@@ -2,16 +2,24 @@ package users_service
 
 import (
 	"context"
+	"evening_detective_server/internal/modules/password_generator"
 	"evening_detective_server/internal/repos/users_repo"
+
+	"golang.org/x/crypto/bcrypt"
 )
 
 type UsersService struct {
-	usersRepo *users_repo.UsersRepo
+	usersRepo         *users_repo.UsersRepo
+	passwordGenerator password_generator.IPasswordGenerator
 }
 
-func NewUsersService(usersRepo *users_repo.UsersRepo) *UsersService {
+func NewUsersService(
+	usersRepo *users_repo.UsersRepo,
+	passwordGenerator password_generator.IPasswordGenerator,
+) *UsersService {
 	return &UsersService{
-		usersRepo: usersRepo,
+		usersRepo:         usersRepo,
+		passwordGenerator: passwordGenerator,
 	}
 }
 
@@ -20,11 +28,19 @@ func (s *UsersService) AddUser(
 	username string,
 	email string,
 ) error {
-	err := s.usersRepo.AddUser(
+	password, err := s.passwordGenerator.Generate()
+	if err != nil {
+		return err
+	}
+	hashedPassword, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost)
+	if err != nil {
+		return err
+	}
+	err = s.usersRepo.AddUser(
 		ctx,
 		username,
 		email,
-		"hello", // TODO: generate password and send email
+		string(hashedPassword),
 		"user",
 	)
 	return err