package gallery

import (
	"slices"
	"strings"
	"testing"

	"github.com/egoist/mygo/ui"

	"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/pixel"
)

func open(path string) (*App, *ui.Tester) {
	a := New("/")
	if path != "" {
		a.Go(path)
	}
	return a, ui.NewTester(a.View, 1280, 800)
}

func click(t *testing.T, tt *ui.Tester, label string) {
	t.Helper()
	if err := tt.Click(label); err != nil {
		t.Fatal(err)
	}
}

func TestBootThenStart(t *testing.T) {
	a, tt := open("")
	if a.started || !tt.HasText("Press start") {
		t.Fatal("gallery did not open on the boot screen")
	}
	tt.Key(0, ui.KeyEnter)
	if !a.started || !tt.HasText("Foundations") {
		t.Fatal("Enter did not start the gallery")
	}
}

func TestNavigation(t *testing.T) {
	a, tt := open("/")
	click(t, tt, "Foundations")
	if a.Path() != "/cat/foundations" {
		t.Fatalf("path %q after choosing a category", a.Path())
	}
	click(t, tt, "Palettes")
	if a.Path() != "/f/palettes" {
		t.Fatalf("path %q after choosing an entry", a.Path())
	}
	tt.Key(0, ui.KeyBracketRight)
	if a.Path() != "/f/canvas" {
		t.Fatalf("] went to %q", a.Path())
	}
	tt.Key(0, ui.KeyBracketLeft)
	tt.Key(0, ui.KeyBracketLeft)
	if a.Path() != Entries()[len(Entries())-1].Path() {
		t.Fatalf("[ from the first entry went to %q", a.Path())
	}
	click(t, tt, "home")
	if a.Path() != "/" {
		t.Fatalf("logo went to %q", a.Path())
	}
}

func TestPaletteKeysAndButtons(t *testing.T) {
	a, tt := open("/")
	tt.Key(0, ui.KeyP)
	if a.palette != 1 {
		t.Fatalf("P chose palette %d", a.palette)
	}
	tt.Key(ui.Shift, ui.KeyP)
	tt.Key(ui.Shift, ui.KeyP)
	if a.palette != len(pixel.Palettes)-1 {
		t.Fatalf("Shift+P twice chose palette %d", a.palette)
	}
	click(t, tt, "next palette")
	if a.palette != 0 {
		t.Fatalf("next palette chose %d", a.palette)
	}
}

func TestSearch(t *testing.T) {
	a, tt := open("/")
	tt.Key(0, ui.KeySlash)
	if !tt.Focused("Search components") {
		t.Fatal("/ did not focus search")
	}
	tt.Type("dith")
	if !tt.HasText("1 results") || !tt.HasText("Dither") {
		t.Fatalf("results: %q", tt.Texts())
	}
	tt.Key(0, ui.KeyP)
	if a.palette != 0 {
		t.Fatal("P changed the palette while typing")
	}
	tt.Key(0, ui.KeyEnter)
	if a.Path() != "/f/dither" || a.query != "" {
		t.Fatalf("Enter left path %q query %q", a.Path(), a.query)
	}
	tt.Key(0, ui.KeySlash)
	tt.Type("zz")
	tt.Key(0, ui.KeyEscape)
	if a.query != "" {
		t.Fatalf("Escape left query %q", a.query)
	}
}

func TestDemoLogAndCopy(t *testing.T) {
	a, tt := open("/f/icons")
	click(t, tt, "heart")
	if !slices.Contains(a.logs["icons"], "icon heart") {
		t.Fatalf("log %q", a.logs["icons"])
	}
	click(t, tt, "COPY CODE")
	e, _ := find("icons")
	if tt.Clipboard() != strings.ReplaceAll(e.Code(), "\t", "  ") {
		t.Fatal("COPY CODE copied something else")
	}
}

func TestLostPageAndLocale(t *testing.T) {
	a, tt := open("/nowhere")
	if !tt.HasText("No page at /nowhere") {
		t.Fatalf("lost page texts %q", tt.Texts())
	}
	click(t, tt, "language")
	if a.locale != pixel.Zh || !tt.HasText("继续？") {
		t.Fatal("language toggle did not switch built-in copy")
	}
	click(t, tt, "继续？")
	if a.Path() != "/" {
		t.Fatalf("continue went to %q", a.Path())
	}
}

func TestGoSkipsBootAndSearch(t *testing.T) {
	a := New("/")
	a.query = "dith"
	a.Go("/f/icons")
	if !a.started || a.Path() != "/f/icons" || a.query != "" {
		t.Fatalf("Go left started %v path %q query %q", a.started, a.Path(), a.query)
	}
}

func TestSearchResultClearsQuery(t *testing.T) {
	a, tt := open("/")
	tt.Key(0, ui.KeySlash)
	tt.Type("dith")
	click(t, tt, "Dither")
	if a.query != "" || a.Path() != "/f/dither" || !tt.HasText("COPY CODE") {
		t.Fatalf("query %q path %q", a.query, a.Path())
	}
}

func TestPathKindMustMatch(t *testing.T) {
	_, tt := open("/c/palettes")
	if !tt.HasText("No page at /c/palettes") {
		t.Fatal("a foundation opened under /c/")
	}
}

func TestShortcutsYieldToFields(t *testing.T) {
	a, tt := open("/f/editor")
	click(t, tt, "Name")
	tt.TypeKey(0, ui.KeyP, "p")
	tt.TypeKey(0, ui.KeyBracketRight, "]")
	if a.palette != 0 || a.Path() != "/f/editor" {
		t.Fatalf("typing changed palette %d or path %q", a.palette, a.Path())
	}
}