package service

import (
	"context"

	"github.com/cloudprint/cloudprint-backend/internal/repository"
	pb "github.com/cloudprint/cloudprint-backend/proto/generated"
	"google.golang.org/grpc/codes"
	"google.golang.org/grpc/status"
)

type PriceServiceServer struct {
	pb.UnimplementedPriceServiceServer
	priceRepo *repository.PriceRepository
}

func NewPriceServiceServer(priceRepo *repository.PriceRepository) *PriceServiceServer {
	return &PriceServiceServer{
		priceRepo: priceRepo,
	}
}

func (s *PriceServiceServer) GetPriceList(ctx context.Context, req *pb.GetPriceListRequest) (*pb.PriceListResponse, error) {
	items, err := s.priceRepo.GetAllActive(ctx)
	if err != nil {
		return nil, status.Errorf(codes.Internal, "get price list failed: %v", err)
	}

	pbItems := make([]*pb.PriceItem, 0, len(items))
	for _, item := range items {
		pbItems = append(pbItems, &pb.PriceItem{
			Id:           item.ID,
			Name:         item.Name,
			Type:         item.Type,
			Price:        item.Price,
			Unit:         item.Unit,
			ColorEnabled: item.ColorEnabled,
			IsActive:     item.IsActive,
		})
	}

	return &pb.PriceListResponse{Items: pbItems}, nil
}

func (s *PriceServiceServer) CreatePriceItem(ctx context.Context, req *pb.CreatePriceItemRequest) (*pb.PriceItem, error) {
	item := &model.PriceList{
		Name:         req.Name,
		Type:         req.Type,
		Price:        req.Price,
		Unit:         req.Unit,
		ColorEnabled: req.ColorEnabled,
		IsActive:     true,
	}

	if err := s.priceRepo.Create(ctx, item); err != nil {
		return nil, status.Errorf(codes.Internal, "create price item failed: %v", err)
	}

	return &pb.PriceItem{
		Id:           item.ID,
		Name:         item.Name,
		Type:         item.Type,
		Price:        item.Price,
		Unit:         item.Unit,
		ColorEnabled: item.ColorEnabled,
		IsActive:     item.IsActive,
	}, nil
}

func (s *PriceServiceServer) UpdatePriceItem(ctx context.Context, req *pb.UpdatePriceItemRequest) (*pb.PriceItem, error) {
	item, err := s.priceRepo.GetByID(ctx, req.Id)
	if err != nil || item == nil {
		return nil, status.Errorf(codes.NotFound, "price item not found")
	}

	item.Name = req.Name
	item.Type = req.Type
	item.Price = req.Price
	item.Unit = req.Unit
	item.ColorEnabled = req.ColorEnabled
	item.IsActive = req.IsActive

	if err := s.priceRepo.Update(ctx, item); err != nil {
		return nil, status.Errorf(codes.Internal, "update price item failed: %v", err)
	}

	return &pb.PriceItem{
		Id:           item.ID,
		Name:         item.Name,
		Type:         item.Type,
		Price:        item.Price,
		Unit:         item.Unit,
		ColorEnabled: item.ColorEnabled,
		IsActive:     item.IsActive,
	}, nil
}