package modes

import (
	"image/color"
	"path/filepath"
	"strings"
	"time"

	"github.com/hajimehoshi/ebiten/v2"

	"kidskeyboard/internal/ui"
)

type animal struct {
	name  string
	image string
	sound string
}

type AnimalMode struct {
	ctx     Context
	animals []animal
	current *animal
}

func NewAnimalMode(ctx Context) *AnimalMode {
	return &AnimalMode{
		ctx: ctx,
		animals: []animal{
			{"dog", "assets/animals/dog.png", "assets/animals/dog.wav"},
			{"cat", "assets/animals/cat.png", "assets/animals/cat.wav"},
			{"cow", "assets/animals/cow.png", "assets/animals/cow.wav"},
		},
	}
}

func (m *AnimalMode) Name() string { return "CTRL+F3 Animal" }
func (m *AnimalMode) OnEnter()     {}
func (m *AnimalMode) OnLeave()     { m.ctx.Audio.StopCurrent() }

func (m *AnimalMode) HandleInput() {
	for _, key := range justPressedKeys() {
		if !childKey(key) {
			continue
		}
		a := m.animals[m.ctx.RNG.Intn(len(m.animals))]
		m.current = &a
		if !m.ctx.Audio.PlayWAV(filepath.Clean(a.sound), true) {
			m.ctx.Audio.PlayToneInterrupt(330+float64(m.ctx.RNG.Intn(280)), 260*time.Millisecond, 0.26)
		}
		return
	}
}

func (m *AnimalMode) Update() {}

func (m *AnimalMode) Draw(screen *ebiten.Image) {
	screen.Fill(color.Black)
	w, h := screen.Bounds().Dx(), screen.Bounds().Dy()
	ui.Text(screen, "CTRL+F3", 20, 20, color.White, 2)
	if m.current == nil {
		ui.CenteredText(screen, "ANIMAL", w/2, h/2, color.White, 7)
		return
	}
	if img, ok := m.ctx.Assets.Image(m.current.image); ok {
		drawImageCentered(screen, img, w/2, h/2, float64(w)*0.65, float64(h)*0.72)
		return
	}
	ui.CenteredText(screen, strings.ToUpper(m.current.name), w/2, h/2, color.White, 9)
}

func drawImageCentered(screen *ebiten.Image, img *ebiten.Image, cx, cy int, maxW, maxH float64) {
	iw, ih := img.Bounds().Dx(), img.Bounds().Dy()
	if iw <= 0 || ih <= 0 {
		return
	}
	scale := min(maxW/float64(iw), maxH/float64(ih))
	if scale <= 0 {
		scale = 1
	}
	op := &ebiten.DrawImageOptions{}
	op.GeoM.Scale(scale, scale)
	op.GeoM.Translate(float64(cx)-float64(iw)*scale/2, float64(cy)-float64(ih)*scale/2)
	screen.DrawImage(img, op)
}