package processor

import (
	"testing"

	"github.com/stretchr/testify/assert"

	"apskel-pos-be/internal/entities"
	"apskel-pos-be/internal/repository"
)

func TestEarningReversalTarget(t *testing.T) {
	earn := entities.WalletTransaction{Amount: 875, Metadata: entities.Metadata{"basis": 87500.0}}
	target := func(order repository.EarningOrder) int64 { return earningReversalTarget(&order, earn) }

	assert.Equal(t, int64(0), target(repository.EarningOrder{}), "nothing refunded, nothing to take")
	assert.Equal(t, int64(875), target(repository.EarningOrder{IsVoid: true}), "void takes everything")
	assert.Equal(t, int64(200), target(repository.EarningOrder{RefundAmount: 20000}), "floor(875 × 20000 / 87500)")
	assert.Equal(t, int64(299), target(repository.EarningOrder{RefundAmount: 29999.99}), "floor, not round")
	assert.Equal(t, int64(875), target(repository.EarningOrder{RefundAmount: 87500}))
	assert.Equal(t, int64(875), target(repository.EarningOrder{RefundAmount: 96250}), "a refund including tax cannot take more than was earned")

	noBasis := entities.WalletTransaction{Amount: 10, Metadata: entities.Metadata{}}
	assert.Equal(t, int64(10), earningReversalTarget(&repository.EarningOrder{RefundAmount: 1}, noBasis), "without a basis any refund takes it all")
}