extends GridContainer

var palette_button = preload("res://Prefabs/PaletteButton.tscn");

var current_palette = "Default"

var default_palette = [
	Color("#FF000000"),
	Color("#FF222034"),
	Color("#FF45283c"),
	Color("#FF663931"),
	Color("#FF8f563b"),
	Color("#FFdf7126"),
	Color("#FFd9a066"),
	Color("#FFeec39a"),
	Color("#FFfbf236"),
	Color("#FF99e550"),
	Color("#FF6abe30"),
	Color("#FF37946e"),
	Color("#FF4b692f"),
	Color("#FF524b24"),
	Color("#FF323c39"),
	Color("#FF3f3f74"),
	Color("#FF306082"),
	Color("#FF5b6ee1"),
	Color("#FF639bff"),
	Color("#FF5fcde4"),
	Color("#FFcbdbfc"),
	Color("#FFffffff"),
	Color("#FF9badb7"),
	Color("#FF847e87"),
	Color("#FF696a6a"),
	Color("#FF595652"),
	Color("#FF76428a"),
	Color("#FFac3232"),
	Color("#FFd95763"),
	Color("#FFd77bba"),
	Color("#FF8f974a"),
	Color("#FF8a6f30")
]

# Called when the node enters the scene tree for the first time.
func _ready() -> void:
	#Global.palettes["Default"] = default_palette

	_load_palettes()

	on_palette_select(current_palette)
	pass # Replace with function body.

func _clear_swatches() -> void:
	for child in get_children():
		if child is BaseButton:
			child.disconnect("pressed", self, "on_color_select")
			child.queue_free()
	pass

func on_palette_select(palette_name : String) -> void:
	_clear_swatches()
	if Global.palettes.has(palette_name):
		_display_palette(Global.palettes[palette_name])
	else:
		_display_palette(Global.palettes["Default"])
	pass

func _display_palette(palette : Array) -> void:
	var index := 0
	for color_data in palette:
		var color = Color(color_data.data)
		var new_button = palette_button.instance()
		new_button.get_child(0).modulate = color
		new_button.hint_tooltip = color_data.data.to_upper() + " " + color_data.name
		new_button.connect("pressed", self, "on_color_select", [index])
		add_child(new_button)
		index += 1
	pass

func on_color_select(index : int) -> void:
	var color = Color(Global.palettes[current_palette][index].data)
	if Input.is_action_just_released("left_mouse"):
		Global.left_color_picker.color = color
		Global.update_left_custom_brush()
	elif Input.is_action_just_released("right_mouse"):
		Global.right_color_picker.color = color
		Global.update_right_custom_brush()
	pass

func _load_palettes() -> void:
	var files := []

	var dir := Directory.new()

	if not dir.dir_exists("user://palettes"):
		dir.make_dir("user://palettes");
		dir.copy("res://Assets/Graphics/Palette/default_palette.json","user://palettes/default_palette.json");
		dir.copy("res://Assets/Graphics/Palette/bubblegum16.json","user://palettes/bubblegum16.json");

	dir.open("user://palettes")
	dir.list_dir_begin()

	while true:
		var file_name = dir.get_next()
		if file_name == "":
			break
		elif not file_name.begins_with(".") && file_name.to_lower().ends_with("json"):
			files.append(file_name)

	dir.list_dir_end()

	for file_name in files:
		var result : String = load_palette("user://palettes/" + file_name)
		if result:
			Global.palette_option_button.add_item(result)
			var index := Global.palette_option_button.get_item_count() - 1
			Global.palette_option_button.set_item_metadata(index, result)
			if result == "Default":
				Global.palette_option_button.select(index)

	for item in Global.palette_option_button.items:
		print(item)
	pass

func load_palette(path : String) -> String:
	var file := File.new()
	file.open(path, File.READ)

	var text = file.get_as_text()
	var result_json = JSON.parse(text)
	var result = {}

	var palette_name = null

	if result_json.error != OK:  # If parse has errors
		print("Error: ", result_json.error)
		print("Error Line: ", result_json.error_line)
		print("Error String: ", result_json.error_string)
	else:  # If parse OK
		var data = result_json.result
		if data.has("name"):
			palette_name = data.name
			Global.palettes[data.name] = data.colors

	file.close()

	return palette_name

func _save_palette(palette : Array, name : String, path : String):
	var file := File.new()
	file.open(path, File.WRITE)

	var data := {}
	data.name = name
	data.colors = palette

	file.store_string(JSON.print(data))
	file.close()

	pass

# Called every frame. 'delta' is the elapsed time since the previous frame.
#func _process(delta):
#	pass