package numeric_test

import (
	"testing"

	"git.javil.eu/jacob1123/budgeteer/postgres/numeric"
)

type TestCaseMarshalJSON struct {
	Value  numeric.Numeric
	Result string
}

func TestMarshalJSON(t *testing.T) {
	t.Parallel()
	tests := []TestCaseMarshalJSON{
		{numeric.Zero(), `0`},
		{numeric.MustParse("1.23"), "1.23"},
		{numeric.MustParse("1,24"), "1.24"},
		{numeric.MustParse("123456789.12345"), "123456789.12345"},
		{numeric.MustParse("-1.23"), "-1.23"},
		{numeric.MustParse("-1,24"), "-1.24"},
		{numeric.MustParse("-123456789.12345"), "-123456789.12345"},
	}
	for i := range tests {
		test := tests[i]
		t.Run(test.Result, func(t *testing.T) {
			t.Parallel()
			z := test.Value
			result, err := z.MarshalJSON()
			if err != nil {
				t.Error(err)
				return
			}

			if string(result) != test.Result {
				t.Errorf("Expected %s, got %s", test.Result, string(result))
				return
			}
		})
	}
}

type TestCaseParse struct {
	Result numeric.Numeric
	Value  string
}

func TestParse(t *testing.T) {
	t.Parallel()
	tests := []TestCaseParse{
		{numeric.FromInt64WithExp(0, 0), `0`},
		{numeric.FromInt64WithExp(1, 0), `1`},
		{numeric.FromInt64WithExp(1, 1), `10`},
		{numeric.FromInt64WithExp(1, 2), `100`},
		{numeric.FromInt64WithExp(123, -2), "1.23"},
		{numeric.FromInt64WithExp(124, -2), "1,24"},
		{numeric.FromInt64WithExp(12345678912345, -5), "123456789.12345"},
		{numeric.FromInt64WithExp(0, 0), `-0`},
		{numeric.FromInt64WithExp(-1, 0), `-1`},
		{numeric.FromInt64WithExp(-1, 1), `-10`},
		{numeric.FromInt64WithExp(-1, 2), `-100`},
		{numeric.FromInt64WithExp(-123, -2), "-1.23"},
		{numeric.FromInt64WithExp(-124, -2), "-1,24"},
		{numeric.FromInt64WithExp(-12345678912345, -5), "-123456789.12345"},
	}
	for i := range tests {
		test := tests[i]
		t.Run(test.Value, func(t *testing.T) {
			t.Parallel()
			result, err := numeric.Parse(test.Value)
			if err != nil {
				t.Error(err)
				return
			}

			if test.Result.Int.Int64() != result.Int.Int64() {
				t.Errorf("Expected int %d, got %d", test.Result.Int, result.Int)
				return
			}

			if test.Result.Exp != result.Exp {
				t.Errorf("Expected exp %d, got %d", test.Result.Exp, result.Exp)
				return
			}
		})
	}
}