using System.Collections;
using System.Collections.Generic;
using Unity.MLAgents;
using Unity.VisualScripting;
using UnityEngine;
using UnityEngine.Rendering;

public class ControllerManager : MonoBehaviour
{
    public static ControllerManager Instance { get; private set; }
    
    public enum ControllerType { 
        Controller,
        Waypoints
    }

    public ControllerType m_CurrentControllerType;

    private GameObject m_WpManager;

    public Transform m_Target;

    public Transform m_ControllerTargetRoot;

    public Transform m_ControllerTarget;

    public Transform m_Chair;

    private GameObject m_Agent;

    private void Awake()
    {
        if (Instance != null && Instance != this)
        {
            Destroy(this);
        }
        else
        {
            Instance = this;
        }

        SetControllerType(m_CurrentControllerType);
        m_Agent = m_ControllerTargetRoot.transform.parent.gameObject;
    }

    private void SetControllerType(ControllerType type)
    {
        m_CurrentControllerType = type;

        m_WpManager = FindFirstObjectByType<WaypointManager>().gameObject;

        if (m_CurrentControllerType == ControllerType.Waypoints)
        {
            m_WpManager.SetActive(true);
        }
        else
        {
            m_WpManager.SetActive(false);   
        }
    }

    private void Update()
    {
        if (m_CurrentControllerType == ControllerType.Controller)
        {
            if (m_Target != null)
            {
                ProcessInput();
            }
        }
    }

    private void ProcessInput()
    {
        RotateControllerRoot();
        SetWalkingSpeed();
        CheckIfClimbing();
        SetTargetCubeTransform();
    }

    private void SetTargetCubeTransform()
    {
        Vector3 chairPosition = new Vector3(m_Chair.position.x, m_Chair.position.y + m_Offset, m_Chair.position.z + m_Offset);
        m_ControllerTargetRoot.transform.position = chairPosition;

        Vector3 controllerTargetPosition = m_ControllerTarget.transform.position;
        m_Target.position = controllerTargetPosition;

    }

    private void RotateControllerRoot()
    {
        var rotation = 0;
        var rotationIncrement = 5;

        if(Input.GetKey(KeyCode.A))
        {
            rotation -= rotationIncrement;
        }

        if(Input.GetKey(KeyCode.D)) 
        {
            rotation += rotationIncrement;
        }

        m_ControllerTargetRoot.Rotate(new Vector3(0, rotation, 0));
    }

    private void SetWalkingSpeed()
    {

        string currentModel = m_Agent.GetComponent<ModelSwap>().m_currentModelName;

        if (Input.GetKey(KeyCode.W) && Input.GetKey(KeyCode.LeftShift))
        {
            m_Agent.GetComponent<Walker>().MTargetWalkingSpeed = 8f;

        }
        else if (Input.GetKey(KeyCode.W) && !Input.GetKey(KeyCode.LeftShift))
        {
            m_Agent.GetComponent<Walker>().MTargetWalkingSpeed = 4f;

        }
        else
        {
            m_Agent.GetComponent<Walker>().MTargetWalkingSpeed = 0.1f;
        }

        //Debug.Log($"{m_Agent.GetComponent<Walker>().MTargetWalkingSpeed}");
    }

    private void CheckIfClimbing()
    {
        if (Input.GetKeyDown(KeyCode.Space))
        {
            if(m_Agent.GetComponent<ModelSwap>().m_currentModelName != "Stairs")
            {
                // Swap to new model
                m_Agent.GetComponent<ModelSwap>().SwitchModel("Stairs", m_Agent.GetComponent<Agent>());
            }
            else
            {
                m_Agent.GetComponent<ModelSwap>().SwitchModel("Walker", m_Agent.GetComponent<Agent>());
            }
        }

        if (m_Agent.GetComponent<ModelSwap>().m_currentModelName == "Stairs")
        {
            // Adjust height of controller target
            m_Offset = 2f;
            m_Agent.GetComponent<Walker>().MTargetWalkingSpeed = 8f;
        } 
        else
        {
            m_Offset = 0;
        }

        if (m_Agent.GetComponent<ModelSwap>().m_currentModelName == "Getup")
        {
            m_Agent.GetComponent<Walker>().MTargetWalkingSpeed = 8f;
        }
    }

}