class_name Player extends CharacterBody2D

const bullet_scene = preload("res://scenes/bullet.tscn")

@onready var right_cast: RayCast2D = $RightCast
@onready var left_cast: RayCast2D = $LeftCast
@onready var bullet_spawn_point_right: Node2D = $BulletSpawnPointRight
@onready var bullet_spawn_point_left: Node2D = $BulletSpawnPointLeft
@onready var jump_buffer_timer: Timer = $JumpBufferTimer
@onready var player_animation: AnimatedSprite2D = $PlayerAnimation

const SPEED = 300.0
const JUMP_VELOCITY = -400.0
const PUSH_POWER= 2000

@export var acceleration: int = 5
@export var health: int = 100

var direction: float
enum FaceDirection{LEFT, RIGHT}
enum State{IDLE, RUN, JUMP, FALL}
var state: State = State.IDLE
var facing: FaceDirection = FaceDirection.RIGHT
var pushTarget: Object
var pushEnabled: bool = false

func _physics_process(delta: float) -> void:
	handle_input(delta)
	handle_movement(delta)
	handle_state(delta)
	handle_animation(delta)
	handle_collisions(delta)

func handle_gravity(delta: float) -> void:
	# Add the gravity.
	if not is_on_floor():
		velocity += get_gravity() * delta
	
func handle_input(delta: float) -> void:
	var dir: int = 0
	match facing:
		FaceDirection.LEFT:
			dir = -1
		FaceDirection.RIGHT:
			dir = 1
	
	if Input.is_action_just_pressed("ui_accept"):
		jump_buffer_timer.start()
	# Handle jump.
	direction = Input.get_axis("ui_left", "ui_right")
	if direction < 0:
		facing = FaceDirection.LEFT
	elif direction > 0:
		facing = FaceDirection.RIGHT
	
	player_animation.flip_h = facing == FaceDirection.LEFT
	
	if Input.is_action_just_pressed("ForcePush") && pushEnabled:
		(pushTarget as RigidBody2D).apply_central_impulse(Vector2(dir, 0) * PUSH_POWER)
			
	if Input.is_action_just_pressed("Shoot"):
		var spawnAt: Node2D = bullet_spawn_point_left
		if dir == 1:
			spawnAt = bullet_spawn_point_right

		#var b = bullet_scene.instantiate()
		#b.position = spawnAt.position
		print("make a bullet")
		var b = %SceneManager.makeBullet(spawnAt.global_transform, dir)
		#b.position = Player.
		#b.Position = Player.Position
		

func handle_movement(delta: float) -> void:
	handle_gravity(delta)
	# Get the input direction and handle the movement/deceleration.
	# As good practice, you should replace UI actions with custom gameplay actions.

	if direction == 0:
		# not moving
		velocity.x = move_toward(velocity.x, 0, acceleration)
	else:
		velocity.x = move_toward(velocity.x, SPEED * direction, acceleration)
	
	if jump_buffer_timer.time_left > 0 and is_on_floor():
		velocity.y = JUMP_VELOCITY
		jump_buffer_timer.stop()
		upJump = true
		state = State.JUMP

	move_and_slide()

func handle_collisions(delta: float) -> void:
	for i in get_slide_collision_count():
		var coll = get_slide_collision(i)
		if coll.get_collider() is RigidBody2D:
			coll.get_collider().apply_central_impulse(-coll.get_normal() * 100)
	
	if right_cast.is_colliding() && facing == FaceDirection.RIGHT:
		var col = right_cast.get_collider()
		if col != null && col.is_in_group("pushable"):
			pushTarget = col
			pushEnabled = true
	elif left_cast.is_colliding() && facing == FaceDirection.LEFT:
		var col = left_cast.get_collider()
		if col != null && col.is_in_group("pushable"):
			pushTarget = col
			pushEnabled = true
	else:
		pushEnabled = false
		pushTarget = null

func handle_state(delta: float) -> void:
	match state:
		State.IDLE when velocity.x != 0: 
			state = State.RUN
	if velocity.y > 0:
		state = State.FALL
	if velocity.y == 0 && velocity.x == 0:
		state = State.IDLE
	elif velocity.y == 0:
		state = State.RUN
			
func handle_animation(delta: float) -> void:
	match state:
		State.IDLE:
			player_animation.play("idle")
		State.RUN:
			player_animation.play("run")
		State.JUMP:
			if upJump:
				player_animation.play("jump")
				upJump = false
		State.FALL:
			player_animation.play("fall")
	
var upJump: bool = false
#func _on_animation_finished() -> void: