extends Container

# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at https://mozilla.org/MPL/2.0/.

export (NodePath) var name_text_path : NodePath
export (NodePath) var level_text_path : NodePath
export (NodePath) var health_range_path : NodePath
export (NodePath) var health_text_path : NodePath
export (NodePath) var xp_range_path : NodePath

var _name_text : Label
var _level_text : Label
var _health_range : Range
var _health_text : Label
var _xp_range : Range

var _player : Entity

func _ready() -> void:
	_name_text = get_node(name_text_path)
	_level_text = get_node(level_text_path)
	_health_range = get_node(health_range_path)
	_health_text = get_node(health_text_path)
	_xp_range = get_node(xp_range_path)

func set_player(p_player: Entity) -> void:
	if not _player == null:
		_player.get_health().disconnect("c_changed", self, "_on_player_health_changed")
		_player.disconnect("cname_changed", self, "cname_changed")
		_player.disconnect("con_level_up", self, "clevel_changed")
		_player.disconnect("con_level_changed", self, "clevel_changed")
		_player.disconnect("con_xp_gained", self, "con_xp_gained")
		_player.disconnect("centity_data_changed", self, "centity_data_changed")
		
		_player = null
	
	if p_player == null:
		return
	
	_player = p_player
	
	_player.connect("cname_changed", self, "cname_changed")
	_player.connect("con_level_up", self, "clevel_changed")
	_player.connect("con_level_changed", self, "clevel_changed")
	_player.connect("con_xp_gained", self, "con_xp_gained")
	_player.connect("centity_data_changed", self, "centity_data_changed")
	
	var health = _player.get_health()
	_on_player_health_changed(health)
	health.connect("c_changed", self, "_on_player_health_changed")
	
	_name_text.text = _player.centity_name
	_level_text.text = str(_player.clevel)
	
	clevel_changed(_player, 0)
	con_xp_gained(_player, 0)
	
func _on_player_health_changed(health: Stat) -> void:
	if health.cmax == 0:
		_health_range.min_value = 0
		_health_range.max_value = 1
		_health_range.value = 0
		
		_health_text.text = ""
		
		return
		
	_health_range.min_value = 0
	_health_range.max_value = health.cmax
	_health_range.value = health.ccurrent
	
	_health_text.text = str(health.ccurrent) + "/" + str(health.cmax)
	
func cname_changed(entity: Entity) -> void:
	_name_text.text = _player.centity_name

func clevel_changed(entity: Entity, value : int) -> void:
	_level_text.text = str(_player.clevel)
	
	_xp_range.min_value = 0
	_xp_range.max_value = Entities.get_xp_data().get_xp(_player.clevel)

func con_xp_gained(entity: Entity, val: int) -> void:
	_xp_range.value = _player.cxp

func centity_data_changed(data: EntityData) -> void:
	var health = _player.get_health()
	_on_player_health_changed(health)