class_name HardCards extends Node2D

static var source_dicts: Array[Dictionary] = [
	{
		"c_out_of_world": ["p_unique", "p_few_friends", []],
		"c_rejection": ["p_finding_friends", "p_laughed_at", []],
		"c_confusion": ["p_inner_conflict", "p_outer_conflict", []]
	},
	{
		"c_homework": ["p_good_grades", "p_upset_peers", []],
		"c_teachers": ["p_volunteering", "p_becoming_teacher", []],
		"c_joy": ["p_worried_mother", "p_thomas_gifted", []]
	},
	{
		"c_comic_heroes": ["p_effort", "p_agent_q", []],
		"c_boy_stuff": ["p_pretending", "p_girls", []],
		"c_teasing": ["p_stubborn", "p_good_intended", ["p_thomas_gifted"]]
	},
	{
		"c_jui_jutsu": ["p_body", "p_girly", []],
		"c_void": ["p_wet", "p_stop", []],
		"c_hit": ["p_confidence", "p_vent", ["p_becoming_teacher"]]
	},
]

static var id_reference: Dictionary[StringName, StringName] = generate_id_reference(true, true)

static var card_id_reference: Dictionary[StringName, StringName] = generate_id_reference(true, false)
static var sticky_id_reference: Dictionary[StringName, StringName] = generate_id_reference(false, true)

static func generate_id_reference(include_cards: bool, include_sticky: bool) -> Dictionary[StringName, StringName]:
	var out:Dictionary[StringName, StringName] = {}
	
	for id in range(source_dicts.size()):
		for card_name:String in source_dicts[id].keys():
			if include_cards:
				out[card_name] = "%d.%s" % [id, card_name]
			if include_sticky:
				for sticky_name in source_dicts[id][card_name]:
					if sticky_name is String:
						out[sticky_name] = "%d.%s.%s" % [id, card_name, sticky_name]
	
	return out


static func get_child_names_of(parent_id: StringName) -> Array[StringName]:
	var out: Array[StringName]
	for child_name: StringName in id_reference.keys():
		if id_reference[child_name].contains(parent_id):
			if child_name != parent_id:
				out.append(child_name)
	return out

#FIXME: enhance typing!
static func get_children_of(parent_id: StringName) -> Array:
	return get_cards_by_name_array(get_child_names_of(parent_id))["sticky_notes"]

func arrange(cards: Array[Card], rect: Rect2, obstacles: Array[Area2D]) -> Array[Card]:
	var total_cards = cards.size()
	
	var x:int = 0
	var y:int = 0
	var i:int = 0
	var max:int = cards.size()
	var grid: int = ceil(sqrt(max))
	var diameter:float = cards[0].diameter
	
	var r_cards: Array[Card] = cards.duplicate()
	r_cards.shuffle()
	
	while i < max:
		while x < grid and i < max:
			while y < ceil(sqrt(max)) and i < max:
				r_cards[i].position = rect.size / Vector2(y, x) * (1.0 / (rect.size.x * diameter) ) + rect.position + Vector2(randf_range(diameter/2+5, diameter-5), randf_range(diameter/2+5, diameter-5))
				i += 1
				y += 1
			x += 1

	for card: Card in r_cards:
		
		for _i in range(20):
			
			if is_out_of_bounds(card, rect):
				card.position = rect.get_center() - card.position * 0.8
				continue
			var colliders: Array[Card] = []
			for collision:Card in r_cards:
				if card != collision:
					if card.collider.collide(card.transform.rotated(PI/2), collision.collider, collision.transform.rotated(PI/2)):
						colliders.append(collision)
			if colliders != []:
				var nearest: Card = colliders[0]
				for colliding in colliders:
					if (colliding.position - card.position).length() > (nearest.position - card.position).length():
						nearest = colliding
			
				card.position += min(nearest.position - card.position.normalized() * card.diameter + 1, nearest.position - card.position)
				continue
			break
	
	return r_cards


func is_out_of_bounds(card: Card, rect: Rect2):
	var world_boundaries: Array[Transform2D] = [
					Transform2D(PI, rect.position),
					Transform2D(PI/2, rect.position),
					Transform2D(-PI/2, rect.position+rect.size),
					Transform2D(0, rect.position+rect.size)
				]
	var shape: = WorldBoundaryShape2D.new()
	
	for boundary:Transform2D in world_boundaries:
		if card.collider.collide(card.transform, shape, boundary):
			return true
	return false

static func get_cards_by_scene_id(id: int) -> Array:
	var output:Array
	
	for card_name in source_dicts[id].keys():
		output.append(Card.new(card_name, id_reference[card_name]))
	
	return output

# used to put cards on the dev board
static func get_cards_by_name_array(names: Array[StringName]) -> Dictionary:
	var output:Dictionary = {
		"cards": [],
		"sticky_notes": []
	}
	
	for card_name:StringName in names:
		if card_id_reference.has(card_name):
			output["cards"].append(create_from_id(id_reference[card_name]))
		else:
			output["sticky_notes"].append(create_from_id(id_reference[card_name]))
	
	return output

static func create_from_id(id:StringName) -> Area2D:
	var parsed: PackedStringArray = id.rsplit(".")
	
	var helper = card_id_reference
	var keys = card_id_reference.keys()
	
	if card_id_reference.values().has(id):
		return Card.new(parsed[1], id)
	elif sticky_id_reference.values().has(id):
		return StickyNote.new(parsed[2], id)
	else:
		push_error("Attempted to create Card or Sticky from non-existent ID!")
		return null

static func create_dev_board(parent: Node2D, rect: Rect2) -> void:
	for x in range(source_dicts.size()):
		var sub_parent = Node2D.new()
		sub_parent.position = Vector2( rect.size.x/(source_dicts.size()+1) * (x+1) , 0)
		parent.add_child(sub_parent, false, Node.INTERNAL_MODE_BACK)
		var y = 1
		for card_name in source_dicts[x].keys():
			var card:Card = create_from_id(card_id_reference[card_name])
			sub_parent.add_child(card, false, Node.INTERNAL_MODE_BACK)
			card.position = Vector2(0, card.diameter * y - card.diameter/2)
			
			var z = 0
			for sticky_name in get_child_names_of(card_name):
				var sticky: StickyNote = create_from_id(sticky_id_reference[sticky_name])
				card.add_child(sticky, false, Node.INTERNAL_MODE_BACK)
				sticky.position = card.sticky_note_position + Vector2(0, 80) * z
				z += 1
			
			y += 1

func _ready() -> void:
	create_dev_board(self, get_viewport().get_visible_rect())