first commit

internal/service/coffee_service.go

@@ -0,0 +1,39 @@
+package service
+
+import (
+	"code.linberg.su/linberg/awesome-cli/awesome-back/internal/domain/entities"
+	"code.linberg.su/linberg/awesome-cli/awesome-back/internal/domain/repositories"
+	"code.linberg.su/linberg/awesome-cli/awesome-back/pkg/errors"
+)
+
+type CoffeeService struct {
+	repo repositories.CoffeeRepository
+}
+
+func NewCoffeeService(repo repositories.CoffeeRepository) *CoffeeService {
+	return &CoffeeService{repo: repo}
+}
+
+func (s *CoffeeService) GetAllCoffees() ([]entities.Coffee, error) {
+	coffees, err := s.repo.FindAll()
+	if err != nil {
+		return nil, errors.Wrap(err, "failed to get coffees")
+	}
+	return coffees, nil
+}
+
+func (s *CoffeeService) GetCoffeeByID(id int) (*entities.Coffee, error) {
+	if id <= 0 {
+		return nil, errors.NewInvalidError("invalid coffee ID")
+	}
+
+	coffee, err := s.repo.FindByID(id)
+	if err != nil {
+		if errors.IsNotFound(err) {
+			return nil, errors.NewNotFoundError("coffee not found")
+		}
+		return nil, errors.Wrap(err, "failed to get coffee")
+	}
+
+	return coffee, nil
+}

internal/service/order_service.go

@@ -0,0 +1,57 @@
+// internal/service/order_service.go
+package service
+
+import (
+	"code.linberg.su/linberg/awesome-cli/awesome-back/internal/domain/entities"
+	"code.linberg.su/linberg/awesome-cli/awesome-back/internal/domain/repositories"
+	"code.linberg.su/linberg/awesome-cli/awesome-back/pkg/errors"
+)
+
+type OrderService struct {
+	orderRepo repositories.OrderRepository
+}
+
+func NewOrderService(orderRepo repositories.OrderRepository) *OrderService {
+	return &OrderService{orderRepo: orderRepo}
+}
+
+func (s *OrderService) GetAllOrders() ([]entities.Order, error) {
+	orders, err := s.orderRepo.FindAll()
+	if err != nil {
+		return nil, errors.Wrap(err, "failed to get orders")
+	}
+	return orders, nil
+}
+
+func (s *OrderService) GetOrderByID(id int) (*entities.Order, error) {
+	if id <= 0 {
+		return nil, errors.NewInvalidError("invalid order ID")
+	}
+
+	order, err := s.orderRepo.FindByID(id)
+	if err != nil {
+		if errors.IsNotFound(err) {
+			return nil, errors.NewNotFoundError("order not found")
+		}
+		return nil, errors.Wrap(err, "failed to get order")
+	}
+
+	return order, nil
+}
+
+func (s *OrderService) CreateOrder(order *entities.Order) error {
+	if order == nil {
+		return errors.NewInvalidError("order cannot be nil")
+	}
+
+	if len(order.Items) == 0 {
+		return errors.NewInvalidError("order must contain at least one item")
+	}
+
+	err := s.orderRepo.Save(order)
+	if err != nil {
+		return errors.Wrap(err, "failed to create order")
+	}
+
+	return nil
+}

internal/service/pastry_service.go

@@ -0,0 +1,52 @@
+package service
+
+import (
+	"code.linberg.su/linberg/awesome-cli/awesome-back/internal/domain/entities"
+	"code.linberg.su/linberg/awesome-cli/awesome-back/internal/domain/repositories"
+	"code.linberg.su/linberg/awesome-cli/awesome-back/pkg/errors"
+)
+
+type PastryService struct {
+	repo repositories.PastryRepository
+}
+
+func NewPastryService(repo repositories.PastryRepository) *PastryService {
+	return &PastryService{repo: repo}
+}
+
+func (s *PastryService) GetAllPastries() ([]entities.Pastry, error) {
+	pastries, err := s.repo.FindAll()
+	if err != nil {
+		return nil, errors.Wrap(err, "failed to get pastries")
+	}
+	return pastries, nil
+}
+
+func (s *PastryService) GetPastryByID(id int) (*entities.Pastry, error) {
+	if id <= 0 {
+		return nil, errors.NewInvalidError("invalid pastry ID")
+	}
+
+	pastry, err := s.repo.FindByID(id)
+	if err != nil {
+		if errors.IsNotFound(err) {
+			return nil, errors.NewNotFoundError("pastry not found")
+		}
+		return nil, errors.Wrap(err, "failed to get pastry")
+	}
+
+	return pastry, nil
+}
+
+func (s *PastryService) GetPastriesByCategory(category string) ([]entities.Pastry, error) {
+	if category == "" {
+		return nil, errors.NewInvalidError("category cannot be empty")
+	}
+
+	pastries, err := s.repo.FindByCategory(category)
+	if err != nil {
+		return nil, errors.Wrap(err, "failed to get pastries by category")
+	}
+
+	return pastries, nil
+}