package point_test

import (
	"math"
	"testing"

	"git.wtrh.nl/patterns/gopatterns/pkg/point"
	"git.wtrh.nl/patterns/gopatterns/pkg/position"
	"git.wtrh.nl/patterns/gopatterns/pkg/util"
	"git.wtrh.nl/patterns/gopatterns/pkg/vector"
	"github.com/stretchr/testify/require"
	"github.com/tdewolff/canvas"
)

func EqualMatrix(t *testing.T, expected, actual canvas.Matrix, delta float64) {
	t.Helper()

	require.InDeltaSlice(t, expected[0][:], actual[0][:], delta)
	require.InDeltaSlice(t, expected[1][:], actual[1][:], delta)
}

func TestAbsolutePoint_Matrix(t *testing.T) {
	rotation := math.Pi/2 + 2
	newPoint := point.NewAbsolutePoint(1, 2, rotation, "1")
	actual := newPoint.Matrix()

	expected := canvas.Matrix{
		{math.Cos(rotation), -math.Sin(rotation), 1.0},
		{math.Sin(rotation), math.Cos(rotation), 2.0},
	}

	EqualMatrix(t, actual, expected, 1e-10)
}

func TestAbsolutePoint_ID(t *testing.T) {
	newPoint := point.NewAbsolutePoint(1, 2, 3, "this is a test value")
	require.Equal(t, util.ID("this is a test value"), newPoint.ID())
}

func TestAbsolutePoint_Name(t *testing.T) {
	require.Equal(t, "this is a test value", point.NewAbsolutePoint(1, 2, 3, "this is a test value").Name())
}

func TestAbsolutePoint_Position(t *testing.T) {
	actual := point.NewAbsolutePoint(1, 2, 3, "this is a test value").Position()
	expected := position.Position{
		Vector:   vector.Vector{X: 1, Y: 2},
		Rotation: 3,
	}

	require.Equal(t, expected, actual)
}

func TestAbsolutePoint_Draw(t *testing.T) {
	newPoint := point.NewAbsolutePoint(1, 2, 3, "this is a test value")
	require.False(t, newPoint.Draw())

	newPoint.SetDraw()
	require.True(t, newPoint.Draw())

	newPoint.UnsetDraw()
	require.False(t, newPoint.Draw())
}

func TestAbsolutePoint_Hide(t *testing.T) {
	newPoint := point.NewAbsolutePoint(1, 2, 3, "this is a test value")
	require.False(t, newPoint.Hide())

	newPoint.SetHide()
	require.True(t, newPoint.Hide())
}