# (c) 2023-present Eroax
# (c) 2023-present Yagich
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
extends GraphNode
class_name DeckNodeRendererGraphNode

## [GraphNode] based renderer of [DeckNode]

## Stores the data container [DeckNode] that the visuals of this [DeckNodeRendererGraphNode]
## are based off.
var node: DeckNode

const TYPE_COLORS := {
	DeckType.Types.BOOL:  Color("#7048e0"),
	DeckType.Types.STRING: Color("#dbe048"),
	DeckType.Types.NUMERIC: Color("#68e36c"),
	DeckType.Types.ARRAY: Color("#e36868"),
	DeckType.Types.DICTIONARY: Color("#79ede3"),
	DeckType.Types.ANY: Color.WHITE,
}

const PORT_USAGE_ICONS := {
	Port.UsageType.TRIGGER: preload("res://graph_node_renderer/textures/port_trigger_12.svg"),
	Port.UsageType.VALUE_REQUEST: preload("res://graph_node_renderer/textures/port_data_request_12.svg"),
	Port.UsageType.BOTH: preload("res://graph_node_renderer/textures/port_any_12.svg"),
}

## Setups up all the properties based off [member node].  Including looping through
## [method DeckNode.get_all_ports()] and setting up all the descriptors.
func _ready() -> void:
	title = node.name
	node.position_updated.connect(_on_node_position_updated)
	resize_request.connect(_on_resize_request)
	#node.port_added.connect(_on_node_port_added)
	#node.port_removed.connect(_on_node_port_removed)
	node.ports_updated.connect(_on_node_ports_updated)
	for port in node.get_all_ports():
		update_port(port)
	position_offset_changed.connect(_on_position_offset_changed)
	node.renamed.connect(_on_node_renamed)
	if node.node_type == "group_node":
		get_titlebar_hbox().tooltip_text = "Group %s" % node.group_id.left(8)
	
	size = node.get_meta("size", Vector2())


## Connected to [signal GraphElement.position_offset_updated] and updates the
## [member node]s properties
func _on_position_offset_changed() -> void:
	node.position.x = position_offset.x
	node.position.y = position_offset.y
	node.position_updated.emit(node.position)
	(get_parent() as DeckRendererGraphEdit).dirty = true


## Connected to [member node]s [signal position_updated] to keep parity with the
## data position.
func _on_node_position_updated(new_position: Dictionary) -> void:
	position_offset_changed.disconnect(_on_position_offset_changed)
	position_offset.x = new_position.x
	position_offset.y = new_position.y
	position_offset_changed.connect(_on_position_offset_changed)
	(get_parent() as DeckRendererGraphEdit).dirty = true


func _on_resize_request(new_minsize: Vector2) -> void:
	node.set_meta(&"size", new_minsize)
	(get_parent() as DeckRendererGraphEdit).dirty = true


## Connected to [member node]s [signal port_added] handles setting up the specified
## [member Port.descriptor] with it's required nodes/signals etc. + adding the port
## using [method GraphNode.set_slot]
func _on_node_port_added(port_idx: int) -> void:
	var port := node.get_all_ports()[port_idx]
	update_port(port)


## Connected to [member node]s [signal port_removed], queue_frees the [Node]
## used for the descriptor, as well as using [method GraphNode.set_slot] to remove the slot.
func _on_node_port_removed(port_idx: int) -> void:
	set_slot(
		port_idx,
		false,
		0,
		Color.WHITE,
		false,
		0,
		Color.WHITE,
	)

	get_child(port_idx).queue_free()


## Connected to [member node]s [signal ports_updated].  Remakes all of the ports
## + their descriptors whenever this is received to allow keeping the Renderers ports up to date.
func _on_node_ports_updated() -> void:
	clear_all_slots()
	for c in get_children():
		c.queue_free()

	for port in node.get_all_ports():
		update_port(port)
		
	await get_tree().process_frame
	size = Vector2()


func _on_node_renamed(new_name: String) -> void:
	title = new_name


func update_port(port: Port) -> void:
	var descriptor_split := port.descriptor.split(":")
	match descriptor_split[0]:
		"button":
			var button := Button.new()
			add_child(button)
			button.text = port.label
			if port.port_type == DeckNode.PortType.OUTPUT:
				button.pressed.connect(
					func():
						node.send(port.index_of_type, true)
				)
			#elif port.port_type == DeckNode.PortType.INPUT:
			else:
				button.pressed.connect(
					func():
						node._receive(port.index_of_type, true)
				)
		"field":
			var line_edit := LineEdit.new()
			add_child(line_edit)
			if port.value:
				line_edit.text = str(port.value)
			line_edit.placeholder_text = port.label
			port.value_callback = line_edit.get_text
			line_edit.text_changed.connect(port.set_value)
		"singlechoice":
			var box := OptionButton.new()
			if descriptor_split.slice(1).is_empty():
				if port.value:
					box.add_item(port.value)
				else:
					box.add_item(port.label)
			else:
				for item in descriptor_split.slice(1):
					box.add_item(item)
			add_child(box)
			port.value_callback = func(): return box.get_item_text(box.get_selected_id())
			if port.type == DeckType.Types.STRING:
				box.item_selected.connect(
					func(_id: int):
						port.set_value.call(box.get_item_text(box.get_selected_id()))
				)
		"codeblock":
			var code_edit = CodeEdit.new()
			add_child(code_edit)
			if port.value:
				code_edit.text = str(port.value)
			code_edit.placeholder_text = port.label
			port.value_callback = code_edit.get_text
			code_edit.text_changed.connect(port.set_value.bind(code_edit.get_text))
			code_edit.custom_minimum_size = Vector2(200, 100)
			code_edit.size_flags_vertical = SIZE_EXPAND_FILL
		"checkbox":
			var cb := CheckBox.new()
			add_child(cb)
			if descriptor_split.size() > 1:
				cb.button_pressed = true
			if port.value is bool:
				cb.button_pressed = port.value
			cb.text = port.label
			port.value_callback = cb.is_pressed
			cb.toggled.connect(port.set_value)
		"spinbox":
			var sb := SpinBox.new()
			add_child(sb)
			if port.value != null:
				sb.value = float(port.value)
			if "unbounded" in descriptor_split:
				sb.max_value = 99999
				sb.allow_greater = true
				sb.allow_lesser = true
				if descriptor_split.size() > 2:
					sb.step = float(descriptor_split[1])
				else:
					sb.step = 1.0
			else:
				sb.min_value = float(descriptor_split[1])
				if descriptor_split.size() > 2:
					sb.max_value = float(descriptor_split[2])
				if descriptor_split.size() > 3:
					sb.step = float(descriptor_split[3])
			port.value_callback = sb.get_value
			sb.value_changed.connect(port.set_value)
		_:
			var label := Label.new()
			add_child(label)
			label.text = port.label
			if port.port_type == DeckNode.PortType.OUTPUT:
				label.horizontal_alignment = HORIZONTAL_ALIGNMENT_RIGHT

	set_slot(
		port.index,
		port.port_type == DeckNode.PortType.INPUT,
		port.type,
		TYPE_COLORS[port.type],
		port.port_type == DeckNode.PortType.OUTPUT,
		port.type,
		TYPE_COLORS[port.type],
		PORT_USAGE_ICONS[port.usage_type],
		PORT_USAGE_ICONS[port.usage_type],
	)