package service

import (
	"context"
	"time"

	entity "gitlab.com/mbugroup/lti-api.git/internal/entities"
)

// PurchaseExpenseBridge defines hooks that allow purchase flows to stay in sync with expense data once it exists.
type PurchaseExpenseBridge interface {
	OnItemsCreated(ctx context.Context, purchaseID uint, items []entity.PurchaseItem) error
	OnItemsDeleted(ctx context.Context, purchaseID uint, itemIDs []uint) error
	OnItemsReceived(ctx context.Context, purchaseID uint, updates []ExpenseReceivingPayload) error
}

// ExpenseReceivingPayload captures the minimum data expense integration will need once available.
type ExpenseReceivingPayload struct {
	PurchaseItemID uint
	ProductID      uint
	WarehouseID    uint
	ReceivedQty    float64
	ReceivedDate   *time.Time
}

// noopPurchaseExpenseBridge is the default implementation until the expense module is ready.
type noopPurchaseExpenseBridge struct{}

func NewNoopPurchaseExpenseBridge() PurchaseExpenseBridge {
	return &noopPurchaseExpenseBridge{}
}

func (n *noopPurchaseExpenseBridge) OnItemsCreated(_ context.Context, _ uint, _ []entity.PurchaseItem) error {
	return nil
}

func (n *noopPurchaseExpenseBridge) OnItemsDeleted(_ context.Context, _ uint, _ []uint) error {
	return nil
}

func (n *noopPurchaseExpenseBridge) OnItemsReceived(_ context.Context, _ uint, _ []ExpenseReceivingPayload) error {
	return nil
}