package door

import (
	"bytes"
	"fmt"
	"strings"
	"testing"
)

func TestPanel(t *testing.T) {
	var p Panel = Panel{X: 5, Y: 7, Width: 10, Style: DOUBLE, Title: "Test"}
	p.Lines = append(p.Lines, NewLine("1234567890"))
	p.Lines = append(p.Lines, NewLine("abcdefghij"))

	var expected string = string(Goto(5, 7)) + "╔Test══════╗" +
		string(Goto(5, 8)) + "║1234567890║" +
		string(Goto(5, 9)) + "║abcdefghij║" +
		string(Goto(5, 10)) + "╚══════════╝"
	var got string = string(p.Output())

	var es []string = strings.SplitAfter(expected, "5H")
	var gs []string = strings.SplitAfter(got, "5H")

	for idx, exp := range es {
		var g string = gs[idx]
		if g != exp {
			t.Errorf("Panel expected %#v, got %#v", exp, g)
		}
	}

	p.TitleOffset = 3
	got = string(p.Output())
	gs = strings.SplitAfter(got, "5H")

	es[0] = "╔═══Test═══╗" + string(Goto(5, 8))
	if gs[1] != es[0] {
		t.Errorf("Panel TitleOffset=3 expected %#v, got %#v", es[0], gs[1])
	}
}

func TestPanelSpacer(t *testing.T) {
	var p Panel = Panel{X: 1, Y: 1, Width: 5, Style: SINGLE}
	p.Lines = append(p.Lines, p.Spacer())
	var expected string = string(Goto(1, 1)) + "┌─────┐" +
		string(Goto(1, 2)) + "├─────┤" +
		string(Goto(1, 3)) + "└─────┘"
	var got string = string(p.Output())
	if expected != got {
		t.Errorf("Panel Spacer expected %#v, got %#v", expected, got)
	}
}

func TestPanelUpdate(t *testing.T) {
	var TestX int = 2
	var TestY int = 2
	var p Panel = Panel{X: TestX, Y: TestY, Width: 3, Style: DOUBLE_SINGLE}
	var x int = 0
	var updater Updater = func(u *bytes.Buffer) {
		u.Reset()
		fmt.Fprintf(u, "%3d", x)
	}
	var l *Line = &Line{UpdateF: updater}
	l.Update()
	p.Lines = append(p.Lines, l)

	var expected string = string(Goto(TestX, TestY)) + "╒═══╕" +
		string(Goto(TestX, TestY+1)) + "│  0│" +
		string(Goto(TestX, TestY+2)) + "╘═══╛"
	var got string = string(p.Output())

	if expected != got {
		t.Errorf("Panel Update expected %#v, got %#v", expected, got)
	}

	x += 3
	got = string(p.Update())
	expected = string(Goto(TestX+1, TestY+1)) + "  3"

	if expected != got {
		t.Errorf("Panel Update expected %#v, got %#v", expected, got)
	}

	got = string(p.Update())

	if got != "" {
		t.Errorf("Panel Update expected '', got %#v", got)
	}

	got = string(p.UpdateLine(0))

	if expected != got {
		t.Errorf("Panel UpdateLine expected %#v, got %#v", expected, got)
	}

	// Expected: Width = 3, Length = 1
	if p.Width != 3 {
		t.Errorf("Panel Width, expected %d, got %d\n", 3, p.Width)
	}
	if p.Length() != 1 {
		t.Errorf("Panel Length, expected %d, got %d\n", 1, p.Length())
	}

	got = string(p.GotoEnd())
	expected = string(Goto(p.X+p.Width+2, p.Y+p.Length()+1))
	if got != expected {
		t.Errorf("Panel GotoEnd expected %#v, got %#v", expected, got)
	}
}

func BenchmarkPanel(b *testing.B) {
	Unicode = false
	var TestX int = 2
	var TestY int = 2
	var p Panel = Panel{X: TestX, Y: TestY, Width: 3, Style: DOUBLE_SINGLE}
	var x int = 0
	var updater Updater = func(u *bytes.Buffer) {
		u.Reset()
		fmt.Fprintf(u, "%3d", x)
	}
	var l *Line = &Line{UpdateF: updater}
	l.Update()
	p.Lines = append(p.Lines, l)
	p.Lines = append(p.Lines, l)
	p.Lines = append(p.Lines, l)

	for n := 0; n < b.N; n++ {
		x = n
		p.Update()
	}
}
func BenchmarkPanelRender(b *testing.B) {
	Unicode = false
	var TestX int = 2
	var TestY int = 2
	var p Panel = Panel{X: TestX, Y: TestY, Width: 8, Style: DOUBLE_SINGLE}
	var x int = 0
	var updater Updater = func(u *bytes.Buffer) {
		u.Reset()
		// Give this text that it will have to do something with (MiXeD CaSe)
		if x%2 == 0 {
			fmt.Fprintf(u, "TeSt %3d", x)
		} else {
			fmt.Fprintf(u, "tEsT %3d", x)
		}
	}
	var l *Line = &Line{UpdateF: updater, RenderF: RenderUppercase("BRI WHI ON BLUE", "GREEN")}
	l.Update()
	p.Lines = append(p.Lines, l)
	p.Lines = append(p.Lines, l)
	p.Lines = append(p.Lines, l)

	for n := 0; n < b.N; n++ {
		x = n
		p.Update()
	}
}