# player class
class_name Player
extends VBoxContainer


var area_exp := 0.0
var current_health: int
var resource_type: String
var current_resource: int


func _ready() -> void:
    SignalBus.enemy_died.connect(_on_enemy_died)
    SignalBus.quest_completed.connect(_on_quest_completed)
    SignalBus.enemy_damaged_player.connect(_on_enemy_damaged_player)
    _set_player_display()
    $PlayerExpBar.value = _get_level_progress_percent()
    $PlayerLabel/PlayerLevel.text = str(floor(PlayerState.level))


func _on_enemy_died(enemyDifficulty, enemyTier, _enemyFaction) -> void:
    var kill_exp = pow(pow(enemyTier + 1, 3), enemyDifficulty)
    area_exp += kill_exp
    # Globals.debug_print("T: " + str(enemyTier) + " D: " + str(enemyDifficulty))
    # Globals.debug_print("K: " + str(kill_exp))
    # Globals.debug_print("A: " + str(area_exp))
    # TODO: maybe show earned exp on bar, separate from current
    # use xp to next level and current level, subtract, figure out percentage per point exp, add to display?


# func _get_player_current_health() -> void:
#     var playerCurrHeath = PlayerState.current_health
#     $PlayerHealthBar/PlayerHealthCurrent.text = str(playerCurrHeath)
#     $PlayerHealthBar.value = playerCurrHeath
#     if playerCurrHeath <= 0:
#         %PlayerInfo/PlayerHealthBar.value = 0
#         Engine.time_scale = 0.0001
    

func _set_player_display() -> void:
    var max_health = PlayerState.max_health
    current_health = max_health
    $PlayerHealthBar/PlayerHealthMax.text = str(max_health)
    $PlayerHealthBar/PlayerHealthCurrent.text = str(current_health)
    $PlayerHealthBar.value = current_health
    

func _set_player_current_health(change: int) -> void:
    var prev_health = current_health
    var new_health = prev_health + change
    current_health = new_health
    if current_health <= 0:
        %PlayerHealthBar/PlayerHealthCurrent.text = str(0)
        $PlayerHealthBar.value = 0
        # TODO: change to scene transition after slowing for a couple seconds
        Engine.time_scale = 0.0001
    else:
        $PlayerHealthBar/PlayerHealthCurrent.text = str(new_health)
        $PlayerHealthBar.value = new_health
    
    
func _on_enemy_damaged_player(damage: int) -> void:
    var damage_received = damage
    _set_player_current_health(-damage_received)


func _calculate_player_level() -> float:
    var current_exp = PlayerState.experience
    return log((0.2 * current_exp + 5) / 5.0) + 1


func _get_level_progress_percent() -> float:
    var current_level = _calculate_player_level()
    return fmod(current_level, 1) * 100.0
       

func _on_quest_completed() -> void:
    PlayerState.experience += area_exp
    PlayerState.level = _calculate_player_level()
    $PlayerExpBar.value = _get_level_progress_percent()
    $PlayerLabel/PlayerLevel.text = str(floor(PlayerState.level))
    # if Globals.debug:
    #     print("FA: ", area_exp)
    #     print("L: ", PlayerState.player_level)
    #     print("XP: ", PlayerState.player_exp)
    #     print("CL: ", _calculate_player_level())
    #     print("LP: ", _get_level_progress_percent())