rename long name to short name

main_dc/api_tp/internal/service/user_service.go

@@ -0,0 +1,77 @@
+package service
+
+import (
+	"errors"
+	"api_tp/internal/models"
+	"api_tp/internal/repository"
+
+	"golang.org/x/crypto/bcrypt"
+)
+
+type UserService struct {
+    userRepo *repository.UserRepository
+}
+
+func NewUserService(userRepo *repository.UserRepository) *UserService {
+    return &UserService{userRepo: userRepo}
+}
+
+func (s *UserService) CreateUser(req *models.CreateUserRequest) (*models.UserResponse, error) {
+    // Проверяем существует ли пользователь с таким email
+    existingUser, err := s.userRepo.FindByEmail(req.Email)
+    // Проверяем как на nil, так на пустой ID
+    if existingUser != nil && existingUser.ID != 0 {
+        return nil, errors.New("user with this email already exists")
+    }
+
+    // Хешируем пароль
+    hashedPassword, err := bcrypt.GenerateFromPassword([]byte(req.Password), bcrypt.DefaultCost)
+    if err != nil {
+        return nil, err
+    }
+
+    user := &models.User{
+        Name:     req.Name,
+        Email:    req.Email,
+        Password: string(hashedPassword),
+    }
+
+    if err := s.userRepo.Create(user); err != nil {
+        return nil, err
+    }
+
+    return s.toUserResponse(user), nil
+}
+
+func (s *UserService) GetUserByID(id uint) (*models.UserResponse, error) {
+    user, err := s.userRepo.FindByID(id)
+    if err != nil {
+        return nil, errors.New("user not found")
+    }
+
+    return s.toUserResponse(user), nil
+}
+
+func (s *UserService) GetAllUsers() ([]models.UserResponse, error) {
+    users, err := s.userRepo.FindAll()
+    if err != nil {
+        return nil, err
+    }
+
+    var responses []models.UserResponse
+    for _, user := range users {
+        responses = append(responses, *s.toUserResponse(&user))
+    }
+
+    return responses, nil
+}
+
+func (s *UserService) toUserResponse(user *models.User) *models.UserResponse {
+    return &models.UserResponse{
+        ID:        user.ID,
+        CreatedAt: user.CreatedAt,
+        UpdatedAt: user.UpdatedAt,
+        Name:      user.Name,
+        Email:     user.Email,
+    }
+}