package service

import (
	"context"
	"time"

	"github.com/google/uuid"
	"github.com/muyuqingfeng/iloom/textile-service/internal/model"
	"github.com/muyuqingfeng/iloom/textile-service/internal/repository"
)

type InboundRequest struct {
	WarehouseID       string  `json:"warehouse_id"`
	Quantity          float64 `json:"quantity"`
	Rolls             int     `json:"rolls"`
	PricePerMeter     float64 `json:"price_per_meter"`
	PriceNote         string  `json:"price_note"`
	WarehouseLocation string  `json:"warehouse_location"`
}

type InventoryService struct {
	repo *repository.InventoryRepo
}

func NewInventoryService(repo *repository.InventoryRepo) *InventoryService {
	return &InventoryService{repo: repo}
}

func (s *InventoryService) Inbound(ctx context.Context, planID, companyID, userID string, req InboundRequest) (*model.InventoryRecord, error) {
	var rolls *int
	if req.Rolls > 0 {
		rolls = &req.Rolls
	}
	var pricePerMeter *float64
	if req.PricePerMeter > 0 {
		pricePerMeter = &req.PricePerMeter
	}
	var priceNote *string
	if req.PriceNote != "" {
		priceNote = &req.PriceNote
	}
	var warehouseLocation *string
	if req.WarehouseLocation != "" {
		warehouseLocation = &req.WarehouseLocation
	}
	var operatorID *string
	if userID != "" {
		operatorID = &userID
	}
	var companyIDPtr *string
	if companyID != "" {
		companyIDPtr = &companyID
	}

	rec := &model.InventoryRecord{
		ID:                uuid.New().String(),
		PlanID:            planID,
		WarehouseID:       req.WarehouseID,
		Quantity:          req.Quantity,
		Rolls:             rolls,
		PricePerMeter:     pricePerMeter,
		PriceNote:         priceNote,
		WarehouseLocation: warehouseLocation,
		OperatorID:        operatorID,
		CompanyID:         companyIDPtr,
		CreatedAt:         time.Now(),
	}

	if err := s.repo.Create(ctx, rec); err != nil {
		return nil, err
	}
	return rec, nil
}

func (s *InventoryService) ListByPlan(ctx context.Context, planID string) ([]model.InventoryRecord, error) {
	return s.repo.ListByPlan(ctx, planID)
}