class_name Tile extends Node2D

@onready var backplate: CompressedTexture2D = preload("res://sprites/backplate.png")
@onready var cover: CompressedTexture2D = preload("res://sprites/cover.png")
@onready var mine: CompressedTexture2D = preload("res://sprites/mine.png")
@onready var flag: CompressedTexture2D = preload("res://sprites/flag.png")
@onready var nums: Array[CompressedTexture2D] = [
	preload("res://sprites/1.png"),
	preload("res://sprites/2.png"),
	preload("res://sprites/3.png"),
	preload("res://sprites/4.png"),
	preload("res://sprites/5.png"),
	preload("res://sprites/6.png"),
	preload("res://sprites/7.png"),
	preload("res://sprites/8.png")
]

enum TileTypes{
	EMPTY,
	ONE,
	TWO,
	THREE,
	FOUR,
	FIVE,
	SIX,
	SEVEN,
	EIGHT,
	MINE
}

@onready var layer1: Sprite2D = $layer1
@onready var layer2: Sprite2D = $layer2

var type: TileTypes
var coord: Vector2i
var revealed: bool = false

func evaluateType() -> void:
	if (type == TileTypes.MINE): return
	var count: int = 0
	for x: int in range(-1, 2):
		for y: int in range(-1, 2):
			if (x == 0 && y == 0): continue
			var tile: Tile = Minefield.instance.getTile(coord + Vector2i(x, y))
			if (tile == null): continue
			if (tile.type == TileTypes.MINE): count += 1
	type = count as TileTypes

func reveal() -> void:
	if (revealed): return
	revealed = true
	layer1.texture = backplate
	match type:
		TileTypes.EMPTY:
			layer2.texture = null
			for x: int in range(-1, 2):
				for y: int in range(-1, 2):
					if (x == 0 && y == 0): continue
					var tile: Tile = Minefield.instance.getTile(coord + Vector2i(x, y))
					if (tile == null): continue
					tile.reveal()
		TileTypes.MINE:
			layer2.texture = mine
		_:
			layer2.texture = nums[type as int - 1]

func _on_static_body_2d_input_event(viewport: Node, event: InputEvent, shape_idx: int) -> void:
	if (event.is_pressed()):
		print("Pressed " + str(coord))
		if (!Minefield.instance.fieldInitialized):
			Minefield.instance.initField(coord)
		reveal()