package units

import (
	"context"

	"github.com/google/uuid"
)

type Service struct {
	repo Repository
}

func NewService(repo Repository) *Service {
	return &Service{repo: repo}
}

func (s *Service) List(ctx context.Context) ([]*Unit, error) {
	return s.repo.List(ctx)
}

func (s *Service) Get(ctx context.Context, id uuid.UUID) (*Unit, error) {
	return s.repo.FindByID(ctx, id)
}

func (s *Service) Create(ctx context.Context, name, symbol string) (*Unit, error) {
	u := &Unit{ID: uuid.New(), Name: name, Symbol: symbol}
	if err := s.repo.Create(ctx, u); err != nil {
		return nil, err
	}
	return u, nil
}

func (s *Service) Update(ctx context.Context, id uuid.UUID, name, symbol string) (*Unit, error) {
	u, err := s.repo.FindByID(ctx, id)
	if err != nil {
		return nil, err
	}
	u.Name = name
	u.Symbol = symbol
	if err := s.repo.Update(ctx, u); err != nil {
		return nil, err
	}
	return u, nil
}

func (s *Service) Delete(ctx context.Context, id uuid.UUID) error {
	return s.repo.Delete(ctx, id)
}