package transformer

import (
	"encoding/json"
	"testing"

	"apskel-pos-be/internal/contract"
	"apskel-pos-be/internal/models"

	"github.com/google/uuid"
	"github.com/stretchr/testify/require"
)

func TestCreatePurchaseOrderRequestToModelAllowsMissingDueDate(t *testing.T) {
	result, err := CreatePurchaseOrderRequestToModel(&contract.CreatePurchaseOrderRequest{
		VendorID:        uuid.New(),
		PONumber:        "PO-001",
		TransactionDate: "2026-05-29",
		Items: []contract.CreatePurchaseOrderItemRequest{
			{
				IngredientID: uuid.New(),
				Quantity:     1,
				UnitID:       uuid.New(),
				Amount:       1000,
			},
		},
	})

	require.NoError(t, err)
	require.Nil(t, result.DueDate)
}

func TestPurchaseOrderModelResponseToResponseIncludesNullDueDate(t *testing.T) {
	result := PurchaseOrderModelResponseToResponse(&models.PurchaseOrderResponse{
		ID:       uuid.New(),
		VendorID: uuid.New(),
		PONumber: "PO-001",
	})

	payload, err := json.Marshal(result)
	require.NoError(t, err)
	require.Contains(t, string(payload), `"due_date":null`)
}