package model

import (
	"errors"
	"testing"

	"git.sendico.io/tech/sxchnge/bff/pkg/merrors"
	"git.sendico.io/tech/sxchnge/bff/pkg/moneybase"
	"github.com/stretchr/testify/require"
)

func TestMaxCurrencyScaleUsesSharedMoneyBaseRange(t *testing.T) {
	require.Equal(t, moneybase.MaxScale, MaxCurrencyScale)
}

func TestNormalizeExplicitCurrencyScalesNormalizesKeys(t *testing.T) {
	scales, err := NormalizeExplicitCurrencyScales(map[Currency]uint32{"usd": 2, "usdt": 6})
	require.NoError(t, err)

	usd, err := CurrencyScale(scales, "USD")
	require.NoError(t, err)
	require.Equal(t, uint32(2), usd)

	usdt, err := CurrencyScale(scales, "USDT")
	require.NoError(t, err)
	require.Equal(t, uint32(6), usdt)
}

func TestCurrencyScaleRejectsUnconfiguredCurrency(t *testing.T) {
	_, err := CurrencyScale(map[Currency]uint32{"USD": 2}, "KWD")

	require.Error(t, err)
	require.True(t, errors.Is(err, merrors.ErrInvalidArg), "err=%v", err)
}

func TestNormalizeExplicitCurrencyScalesRejectsMissingScales(t *testing.T) {
	_, err := NormalizeExplicitCurrencyScales(nil)

	require.Error(t, err)
	require.True(t, errors.Is(err, merrors.ErrInvalidArg), "err=%v", err)
}