package tender

import "testing"

func TestAggregateProcurementLotEstimatedValue(t *testing.T) {
	value, currency := AggregateProcurementLotEstimatedValue([]ProcurementLot{
		{EstimatedValue: 100000, Currency: "EUR"},
		{EstimatedValue: 250000, Currency: "EUR"},
	})
	if value != 350000 {
		t.Fatalf("expected total 350000, got %v", value)
	}
	if currency != "EUR" {
		t.Fatalf("expected currency EUR, got %q", currency)
	}
}

func TestAggregateProcurementLotEstimatedValueRejectsMixedCurrencies(t *testing.T) {
	value, currency := AggregateProcurementLotEstimatedValue([]ProcurementLot{
		{EstimatedValue: 100000, Currency: "EUR"},
		{EstimatedValue: 250000, Currency: "USD"},
	})
	if value != 0 || currency != "" {
		t.Fatalf("expected no aggregation for mixed currencies, got value=%v currency=%q", value, currency)
	}
}

func TestAggregateProcurementLotEstimatedValueAllowsEmptyLotCurrency(t *testing.T) {
	value, currency := AggregateProcurementLotEstimatedValue([]ProcurementLot{
		{EstimatedValue: 100000, Currency: "EUR"},
		{EstimatedValue: 250000},
	})
	if value != 350000 {
		t.Fatalf("expected total 350000, got %v", value)
	}
	if currency != "EUR" {
		t.Fatalf("expected currency EUR, got %q", currency)
	}
}

func TestResolvedEstimatedValueAndCurrencyUsesLotsWhenTopLevelMissing(t *testing.T) {
	tender := &Tender{
		Currency: "EUR",
		ProcurementLots: []ProcurementLot{
			{LotID: "LOT-0001", EstimatedValue: 500000, Currency: "EUR"},
		},
	}

	value, currency := tender.ResolvedEstimatedValueAndCurrency()
	if value != 500000 {
		t.Fatalf("expected 500000, got %v", value)
	}
	if currency != "EUR" {
		t.Fatalf("expected EUR, got %q", currency)
	}
}

func TestResolvedEstimatedValueAndCurrencyPrefersTopLevel(t *testing.T) {
	tender := &Tender{
		EstimatedValue: 900000,
		Currency:       "USD",
		ProcurementLots: []ProcurementLot{
			{EstimatedValue: 100000, Currency: "EUR"},
		},
	}

	value, currency := tender.ResolvedEstimatedValueAndCurrency()
	if value != 900000 {
		t.Fatalf("expected 900000, got %v", value)
	}
	if currency != "USD" {
		t.Fatalf("expected USD, got %q", currency)
	}
}