extends Node

var _cache: Dictionary = {}


func _make_image(w: int, h: int, fill: Color) -> Image:
	var img: Image = Image.create(w, h, false, Image.FORMAT_RGB8)
	img.fill(fill)
	return img


func _to_texture(img: Image) -> ImageTexture:
	return ImageTexture.create_from_image(img)


func _get_or_create(key: String, maker: Callable) -> ImageTexture:
	if _cache.has(key):
		return _cache[key]
	var tex: ImageTexture = maker.call()
	_cache[key] = tex
	return tex


# Бежевые обои с растительным узором (мелкие точки)
func wallpaper() -> ImageTexture:
	return _get_or_create("wallpaper", func() -> ImageTexture:
		var base: Color = Color(0.83, 0.72, 0.55)
		var dot: Color = Color(0.72, 0.6, 0.42)
		var darker: Color = Color(0.78, 0.68, 0.5)
		var img: Image = _make_image(64, 64, base)
		# мелкие крестики-цветы
		for y in range(0, 64, 8):
			for x in range(0, 64, 8):
				var ox: int = 4 if (y / 8) % 2 == 0 else 0
				var px: int = (x + ox) % 64
				img.set_pixel(px, y, dot)
				if px + 1 < 64:
					img.set_pixel(px + 1, y, darker)
				if y + 1 < 64:
					img.set_pixel(px, y + 1, darker)
		return _to_texture(img)
	)


# Линолеум жёлто-коричневый с горизонтальными полосами под паркет
func linoleum() -> ImageTexture:
	return _get_or_create("linoleum", func() -> ImageTexture:
		var a: Color = Color(0.72, 0.6, 0.41)
		var b: Color = Color(0.65, 0.53, 0.36)
		var c: Color = Color(0.58, 0.46, 0.3)
		var img: Image = _make_image(64, 64, a)
		# полосы паркета
		for y in range(64):
			var stripe: int = y / 8
			var col: Color = a if stripe % 2 == 0 else b
			for x in range(64):
				img.set_pixel(x, y, col)
		# швы между досками
		for y in range(0, 64, 8):
			for x in range(64):
				img.set_pixel(x, y, c)
		# вертикальные швы пэчворк
		for y in range(64):
			var stripe: int = y / 8
			var seam_x: int = ((stripe * 23) % 32) + 16
			img.set_pixel(seam_x, y, c)
		return _to_texture(img)
	)


# Потолок: светлая побелка с лёгким шумом
func ceiling() -> ImageTexture:
	return _get_or_create("ceiling", func() -> ImageTexture:
		var base: Color = Color(0.92, 0.9, 0.85)
		var spot: Color = Color(0.88, 0.86, 0.82)
		var img: Image = _make_image(32, 32, base)
		var rng: RandomNumberGenerator = RandomNumberGenerator.new()
		rng.seed = 4242
		for i in range(20):
			var x: int = rng.randi_range(0, 31)
			var y: int = rng.randi_range(0, 31)
			img.set_pixel(x, y, spot)
		return _to_texture(img)
	)


# Бордовый ковёр с персидским ромбовидным узором
func wall_carpet() -> ImageTexture:
	return _get_or_create("wall_carpet", func() -> ImageTexture:
		var base: Color = Color(0.36, 0.12, 0.13)
		var pattern: Color = Color(0.78, 0.62, 0.2)
		var dark: Color = Color(0.22, 0.07, 0.08)
		var img: Image = _make_image(64, 64, base)
		# ромбы
		for cy in [16, 48]:
			for cx in [16, 48]:
				for r in range(6):
					var px1: int = cx - r
					var px2: int = cx + r
					var py1: int = cy - (6 - r)
					var py2: int = cy + (6 - r)
					if px1 >= 0 and py1 >= 0 and px1 < 64 and py1 < 64:
						img.set_pixel(px1, py1, pattern)
					if px2 < 64 and py1 >= 0:
						img.set_pixel(px2, py1, pattern)
					if px1 >= 0 and py2 < 64:
						img.set_pixel(px1, py2, pattern)
					if px2 < 64 and py2 < 64:
						img.set_pixel(px2, py2, pattern)
		# рамка
		for i in range(64):
			img.set_pixel(i, 0, dark)
			img.set_pixel(i, 63, dark)
			img.set_pixel(0, i, dark)
			img.set_pixel(63, i, dark)
		return _to_texture(img)
	)


# Тёмно-синее одеяло «звёзды»
func blanket() -> ImageTexture:
	return _get_or_create("blanket", func() -> ImageTexture:
		var base: Color = Color(0.13, 0.16, 0.32)
		var star: Color = Color(0.85, 0.85, 0.75)
		var img: Image = _make_image(32, 32, base)
		var stars: Array = [[5,5],[14,3],[24,7],[8,12],[20,16],[3,21],[27,22],[15,26],[10,28]]
		for s in stars:
			img.set_pixel(s[0], s[1], star)
			if s[0] + 1 < 32:
				img.set_pixel(s[0] + 1, s[1], star)
			if s[0] - 1 >= 0:
				img.set_pixel(s[0] - 1, s[1], star)
			if s[1] + 1 < 32:
				img.set_pixel(s[0], s[1] + 1, star)
			if s[1] - 1 >= 0:
				img.set_pixel(s[0], s[1] - 1, star)
		return _to_texture(img)
	)


# CS:GO постер (жёлтый с силуэтом AWP)
func poster_csgo() -> ImageTexture:
	return _get_or_create("poster_csgo", func() -> ImageTexture:
		var base: Color = Color(0.94, 0.71, 0.1)
		var dark: Color = Color(0.18, 0.13, 0.08)
		var img: Image = _make_image(32, 40, base)
		# рамка
		for i in range(32):
			img.set_pixel(i, 0, dark)
			img.set_pixel(i, 39, dark)
		for i in range(40):
			img.set_pixel(0, i, dark)
			img.set_pixel(31, i, dark)
		# буквы CS внизу (примитивно)
		for x in range(8, 12):
			img.set_pixel(x, 32, dark)
			img.set_pixel(x, 35, dark)
		img.set_pixel(8, 33, dark)
		img.set_pixel(8, 34, dark)
		for x in range(14, 18):
			img.set_pixel(x, 32, dark)
			img.set_pixel(x, 35, dark)
		img.set_pixel(14, 33, dark)
		img.set_pixel(17, 34, dark)
		# силуэт AWP (горизонталь сверху)
		for x in range(6, 26):
			img.set_pixel(x, 18, dark)
			img.set_pixel(x, 19, dark)
		for x in range(20, 26):
			img.set_pixel(x, 17, dark)
		img.set_pixel(7, 20, dark)
		img.set_pixel(8, 20, dark)
		return _to_texture(img)
	)


# Моргенштерн постер (тёмно-красный с белым контуром головы)
func poster_morgen() -> ImageTexture:
	return _get_or_create("poster_morgen", func() -> ImageTexture:
		var base: Color = Color(0.7, 0.13, 0.13)
		var light: Color = Color(0.9, 0.85, 0.8)
		var dark: Color = Color(0.2, 0.05, 0.05)
		var img: Image = _make_image(32, 40, base)
		# рамка
		for i in range(32):
			img.set_pixel(i, 0, dark)
			img.set_pixel(i, 39, dark)
		for i in range(40):
			img.set_pixel(0, i, dark)
			img.set_pixel(31, i, dark)
		# силуэт головы по центру
		var cx: int = 16
		var cy: int = 18
		for r in range(7):
			var w: int = int(sqrt(49 - r * r))
			for dx in range(-w, w + 1):
				if cy - r >= 0 and cy - r < 40 and cx + dx >= 0 and cx + dx < 32:
					img.set_pixel(cx + dx, cy - r, light)
				if cy + r < 40 and cx + dx >= 0 and cx + dx < 32:
					img.set_pixel(cx + dx, cy + r, light)
		return _to_texture(img)
	)


# Двери: деревянная текстура с волокном
func door() -> ImageTexture:
	return _get_or_create("door", func() -> ImageTexture:
		var a: Color = Color(0.36, 0.23, 0.12)
		var b: Color = Color(0.45, 0.31, 0.18)
		var c: Color = Color(0.28, 0.18, 0.09)
		var img: Image = _make_image(32, 64, a)
		for y in range(64):
			for x in range(32):
				var v: float = sin(float(x) * 0.5 + float(y) * 0.1) * 0.5 + 0.5
				if v > 0.6:
					img.set_pixel(x, y, b)
				elif v < 0.3:
					img.set_pixel(x, y, c)
		return _to_texture(img)
	)


# Стол MICKE: белый с малозаметной шумной текстурой
func desk_white() -> ImageTexture:
	return _get_or_create("desk_white", func() -> ImageTexture:
		var base: Color = Color(0.96, 0.95, 0.93)
		var nick: Color = Color(0.88, 0.86, 0.82)
		var img: Image = _make_image(32, 32, base)
		var rng: RandomNumberGenerator = RandomNumberGenerator.new()
		rng.seed = 1337
		for i in range(8):
			var x: int = rng.randi_range(0, 31)
			var y: int = rng.randi_range(0, 31)
			img.set_pixel(x, y, nick)
		return _to_texture(img)
	)


# Книжный корешок (несколько цветов)
func book_color(color_idx: int) -> ImageTexture:
	var key: String = "book_%d" % color_idx
	return _get_or_create(key, func() -> ImageTexture:
		var palette: Array[Color] = [
			Color(0.36, 0.18, 0.15),
			Color(0.2, 0.35, 0.5),
			Color(0.13, 0.13, 0.15),
			Color(0.55, 0.45, 0.25),
			Color(0.3, 0.5, 0.3),
		]
		var base: Color = palette[color_idx % palette.size()]
		var trim: Color = Color(base.r * 0.6, base.g * 0.6, base.b * 0.6)
		var img: Image = _make_image(16, 32, base)
		# узкие линии-трим сверху и снизу
		for x in range(16):
			img.set_pixel(x, 0, trim)
			img.set_pixel(x, 31, trim)
			img.set_pixel(x, 5, trim)
			img.set_pixel(x, 26, trim)
		return _to_texture(img)
	)


# Применить текстуру к материалу с заданным uv-scale
func apply_to_material(mat: BaseMaterial3D, texture: ImageTexture, scale: Vector3 = Vector3.ONE) -> void:
	if mat == null:
		return
	mat.albedo_texture = texture
	mat.uv1_scale = scale
	mat.texture_filter = BaseMaterial3D.TEXTURE_FILTER_NEAREST  # пиксель-арт