class_name Player extends CharacterBody2D

@onready var right_cast: RayCast2D = $RightCast
@onready var left_cast: RayCast2D = $LeftCast
@onready var right_spawn: Marker2D = $RightSpawn
@onready var left_spawn: Marker2D = $LeftSpawn
@onready var player_graphic: AnimatedSprite2D = $PlayerGraphic

@export var shove_power:= 800
@export var bump_power:= 50

var direction
signal bulletSignal(pos, speed)

enum FaceDirection {LEFT, RIGHT}
enum PlayerStates {IDLE, RUNNING, JUMPING, FALLING}

var facing: FaceDirection = FaceDirection.RIGHT
var current_player_state: PlayerStates = PlayerStates.IDLE
var upJump:bool = false

var pushRightEnabled = false
var pushLeftEnabled = false
var pushTarget:Crate

const SPEED = 300.0
const JUMP_VELOCITY = -400.0

func _physics_process(delta: float) -> void:
	# Add the gravity.
	if not is_on_floor():
		velocity += get_gravity() * delta

	handle_input()
	handle_movement()
	handle_states()
	handle_animations()
	move_and_slide()
	handle_collisions()
	
func handle_input()-> void:
	#Handle shoot
	if Input.is_action_just_pressed("shoot"):
		print ("player wants to shoot")
		#send a bullet signal
		if facing==FaceDirection.RIGHT:
			bulletSignal.emit(right_spawn.global_transform, 800)
		if facing==FaceDirection.LEFT:
			bulletSignal.emit(left_spawn.global_transform, -800)
			player_graphic.flip_h = true
			
			
			
	# Handle shove.
	if Input.is_action_just_pressed("shove"):
		print("Player shove!")
		if pushRightEnabled and facing==FaceDirection.RIGHT:
			# shove it right
			pushTarget.apply_central_impulse(Vector2(1,0) * shove_power)
		if pushLeftEnabled and facing==FaceDirection.LEFT:
			# shove it left
			pushTarget.apply_central_impulse(Vector2(-1,0) * shove_power)
			
		# Handle jump.
	if Input.is_action_just_pressed("ui_accept") and is_on_floor():
		velocity.y = JUMP_VELOCITY
		current_player_state=PlayerStates.JUMPING
		upJump = true
		
		# Get the input direction and handle the movement/deceleration.
		# As good practice, you should replace UI actions with custom gameplay actions.
	direction = Input.get_axis("ui_left", "ui_right")

func handle_movement()-> void:
	if direction:
		velocity.x = direction * SPEED
		# set player direction
		if direction < 0:
			facing = FaceDirection.LEFT
			player_graphic.flip_h = true
		if direction > 0:
			facing = FaceDirection.RIGHT
			player_graphic.flip_h = false
	else:
		velocity.x = move_toward(velocity.x, 0, SPEED)
	
func handle_collisions()-> void:
	# find all things my player collided with
	for i in get_slide_collision_count():
		var c = get_slide_collision(i)
		if c.get_collider() is RigidBody2D:
			c.get_collider().apply_central_impulse(-c.get_normal() * bump_power)
			
	if right_cast.is_colliding(): 
		print("Something on my right")
		# get the thing i can shove
		var collider = right_cast.get_collider()
		if collider is Node:
			pushRightEnabled = true
			pushTarget = collider
	else:
		pushRightEnabled = false

	if left_cast.is_colliding(): 
		print("Something on my left")
		# get the thing i can shove
		var collider = left_cast.get_collider()
		if collider is Node:
			pushLeftEnabled = true
			pushTarget = collider
	else:
		pushLeftEnabled = false

func handle_states()-> void:
	match current_player_state:
		PlayerStates.IDLE when velocity.x !=0:
			current_player_state = PlayerStates.RUNNING
		PlayerStates.RUNNING when velocity.x==0:
			current_player_state = PlayerStates.IDLE
		PlayerStates.JUMPING when velocity.y>0:
			#you falling
			current_player_state = PlayerStates.FALLING
		PlayerStates.FALLING when is_on_floor():
			if velocity.x ==0:
				current_player_state = PlayerStates.IDLE
			else:
				current_player_state = PlayerStates.RUNNING

func handle_animations()-> void:
	match current_player_state:
		PlayerStates.RUNNING:
			player_graphic.play("run")
		PlayerStates.IDLE:
			player_graphic.play("idle")
		PlayerStates.JUMPING:
			if upJump:
				player_graphic.play("jump")
		PlayerStates.FALLING:
			player_graphic.play("fall")
	
func _on_animation_finished() -> void:
	match current_player_state:
		PlayerStates.JUMPING:
			upJump = false