using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.InputSystem;

[RequireComponent(typeof(PlayerInput), typeof(CharacterController))]
public class PlayerInputController : MonoBehaviour
{


    [SerializeField]
    private float m_playerSpeed = 1;

    [SerializeField]
    private float m_rotationSpeed = 1;

    [SerializeField]
    [Tooltip("Used to spin on spot\n"
            + "0 = back\n"
            + "0.5 = left/right\n"
            + "1.0 = forward")]
    private AnimationCurve m_turnRadius;


    private PlayerInput m_input;
    private CharacterController m_controller;

    private Vector3 m_desiredDirection;
    private bool m_recievedInput => m_desiredDirection.magnitude != 0;

    private YeetController m_yeetController;

    private GameObject m_child;
    private GameObject m_body;

    private void Awake()
    {
        m_input = GetComponent<PlayerInput>();
        m_controller = GetComponent<CharacterController>();
        m_yeetController = GetComponent<YeetController>();

        m_body = this.gameObject;
    }


    private void Update()
    {
        ApplyRotation();
        ApplyMovement();
        LockAxis(Vector3.up);
    }


    private void OnMovement(InputValue value)
    {
        Vector2 m_recievedInput = value.Get<Vector2>();
        m_desiredDirection = new Vector3(m_recievedInput.x, 0.0f, m_recievedInput.y);
    }

    private void OnTriggerEnter(Collider collider)
    {
        Debug.Log("PlayerInputController.OnTriggerEnter: arrived");
        m_child = collider.gameObject;
    }

    private void OnTriggerExit(Collider collider)
    { 
        m_child = null;
    }

    private void OnYeet()
    {
        m_yeetController.parent = m_body;
        switch (m_yeetController.yeetState)
        {
            case YeetController.YeetState.Unheld:
                if(m_child)
                    m_yeetController.Hold(m_child);
                // Grab nearest baby
                break;
            case YeetController.YeetState.Held:
                m_yeetController.Yeet();
                // Yeet baby
                break;
            case YeetController.YeetState.Yeeting:
                // Cooldown?
                break;
        }
    }

    private void ApplyRotation()
    {
        transform.forward = Vector3.Slerp(transform.forward, m_desiredDirection.normalized, m_rotationSpeed * Time.deltaTime);
    }

    private void ApplyMovement()
    {
        if (!m_recievedInput)
            return;


        float forwardRatio = (Vector3.Dot(transform.forward, m_desiredDirection.normalized) + 1) / 2;
        float speed = m_turnRadius.Evaluate(forwardRatio) * m_playerSpeed;


        m_controller.Move(transform.forward * speed * Time.deltaTime);
    }

    private void LockAxis(Vector3 axis)
    {
        transform.position = Vector3.ProjectOnPlane(transform.position, axis);
    }
}