extends Control

@onready var headbar_scene: PackedScene = preload("res://scene/ui/item/headbar.tscn")
@onready var camera: CameraManager = Global.camera_mgr


class HeadbarMeta:
    var pos: Vector3
    var headbar: Headbar

var headbar_map: Dictionary = {}


func _ready():
    SignalManager.character_create.connect(on_character_create)
    SignalManager.character_ui_pos_changed.connect(on_character_ui_pos_changed)
    SignalManager.character_destroy.connect(on_character_destroy)
    SignalManager.character_status_changed.connect(on_character_status_changed)
    SignalManager.character_hit_text.connect(on_character_hit_text)
    SignalManager.character_hit_damage.connect(on_character_hit_damage)
    SignalManager.character_die.connect(on_character_die)


func _process(delta):
    for k in headbar_map:
        var headbar_meta: HeadbarMeta = headbar_map[k] as HeadbarMeta
        headbar_meta.headbar.position = camera.get_screen_pos(headbar_meta.pos)


func on_character_create(id: int, type: int, pos: Vector3) -> void:
    if type != Enum.ECharacterType.Monster:
        return
    var new_headbar_meta = HeadbarMeta.new()
    new_headbar_meta.pos = pos
    var new_headbar      = headbar_scene.instantiate()
    add_child(new_headbar)
    new_headbar_meta.headbar = new_headbar
    on_character_ui_pos_changed(id, pos)
    headbar_map[id] = new_headbar_meta


func on_character_ui_pos_changed(id: int, pos: Vector3) -> void:
    if not id in headbar_map:
        return
    var headbar_meta     = headbar_map[id]
    var headbar: Headbar = headbar_meta.headbar as Headbar
    headbar_meta.pos = pos
    headbar.position = camera.get_screen_pos(pos)


func on_character_destroy(id: int) -> void:
    if not id in headbar_map:
        return
    var headbar_meta     = headbar_map[id]
    var headbar: Headbar = headbar_meta.headbar as Headbar
    headbar.queue_free()
    headbar_map.erase(id)


func on_character_status_changed(id: int, status_name: String, value) -> void:
    if not id in headbar_map:
        return
    var headbar_meta      = headbar_map[id]
    var headbar: Headbar  = headbar_meta.headbar as Headbar
    var func_name: String = "on_%s_changed" % status_name
    if headbar.has_method(func_name):
        headbar.call(func_name, value)


func on_character_hit_text(id: int, value: String) -> void:
    if not id in headbar_map:
        return
    var headbar_meta     = headbar_map[id]
    var headbar: Headbar = headbar_meta.headbar as Headbar
    headbar.on_hit_text(value)


func on_character_hit_damage(id: int, value: float) -> void:
    if not id in headbar_map:
        return
    var headbar_meta     = headbar_map[id]
    var headbar: Headbar = headbar_meta.headbar as Headbar
    headbar.on_hit_damage(value)


func on_character_die(id: int) -> void:
    if not id in headbar_map:
        return
    var headbar_meta     = headbar_map[id]
    var headbar: Headbar = headbar_meta.headbar as Headbar
    headbar.queue_free()
    headbar_map.erase(id)