package usecase

import (
	"testing"

	"cmroubao/backend-api/internal/domain"
)

func TestFreightNormalizationHashExcludesInternalIDs(t *testing.T) {
	source := validFreightSource()
	firstService := &FreightService{ids: &sequenceIDs{next: 10}}
	first, err := firstService.normalize(source)
	if err != nil {
		t.Fatalf("first normalize error = %v", err)
	}
	secondService := &FreightService{ids: &sequenceIDs{next: 100}}
	second, err := secondService.normalize(source)
	if err != nil {
		t.Fatalf("second normalize error = %v", err)
	}
	if first.Orders[0].ID == second.Orders[0].ID {
		t.Fatal("test IDs did not differ")
	}
	if first.Orders[0].CanonicalSHA256 !=
		second.Orders[0].CanonicalSHA256 {
		t.Fatalf(
			"canonical hash depends on internal ID: %s != %s",
			first.Orders[0].CanonicalSHA256,
			second.Orders[0].CanonicalSHA256,
		)
	}
}

func TestFreightNormalizationRejectsConflictingIdentityAndInvalidTime(
	t *testing.T,
) {
	duplicate := validFreightSource()
	duplicate.Orders[0].Items = append(
		duplicate.Orders[0].Items,
		duplicate.Orders[0].Items[0],
	)
	service := &FreightService{ids: &sequenceIDs{}}
	if _, err := service.normalize(duplicate); err == nil {
		t.Fatal("duplicate item normalize error = nil")
	}

	invalidTime := validFreightSource()
	value := "not-a-time"
	invalidTime.Orders[0].SourceCreatedAt = &value
	if _, err := service.normalize(invalidTime); err == nil {
		t.Fatal("invalid source time normalize error = nil")
	}
}

func validFreightSource() domain.FreightSourceBatch {
	shop := "测试店铺"
	sourceCreatedAt := "2026-07-28 08:00:00"
	orderStatus := "0"
	purchaseStatus := "1"
	thumb := "190"
	itemPurchaseStatus := "0"
	quantity := 2
	canceled := false
	return domain.FreightSourceBatch{
		SchemaVersion: 1,
		Query: domain.FreightSourceQuery{
			Mode: domain.FreightSyncOrderNumber,
		},
		Orders: []domain.FreightSourceOrder{{
			ExternalStockID: "12",
			SourceCode:      "SOURCE-12",
			ShopName:        &shop,
			SourceCreatedAt: &sourceCreatedAt,
			OrderStatus:     &orderStatus,
			PurchaseStatus:  &purchaseStatus,
			IsCanceled:      &canceled,
			Items: []domain.FreightSourceItem{{
				ExternalItemID:  "88",
				Title:           "商品",
				ProductSpec:     "黑色,L",
				SKU:             "BLACK-L",
				Quantity:        &quantity,
				ProductThumbRef: &thumb,
				PurchaseStatus:  &itemPurchaseStatus,
			}},
		}},
	}
}