using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;

public class PlayerManager : MonoBehaviour
{

    public float speed = 8;
    public float runSpeed = 20;
    public float rotateSpeed = 5;
    public float mouseSensitive = 100;
    public float buildRate = 0.5f;
    public float health = 100;
    public float actualHealth = 100;
    private float buildTime;
    private bool run = false;
    private Camera playerCamera;
    private Rigidbody rigidBody;
    public int barricadeMaterials = 50;
    public int ammo = 50;
    public List<GameObject> weaponList = new List<GameObject>();
    private GameObject createWeapon;
    public GameObject spikes;
    public Sprite spikesImage;
    public Sprite handImage;
    public GuiManager guiManager;
    public int selectedWeapon = 0;
    private float selectRate = 1;
    private float selectTime = 1;
    public AudioSource audio;
    public AudioClip lose;
    private float nextMapeTime = 2;
    private float nextMapeTime2 = 2;


    // Start is called before the first frame update
    void Start()
    {
        selectTime = selectRate;
        actualHealth = health;
        buildTime = buildRate;
        playerCamera = GetComponentInChildren<Camera>();
        rigidBody = GetComponent<Rigidbody>();
        Cursor.lockState = CursorLockMode.Locked;
        Cursor.visible = false;
    }

    // Update is called once per frame
    void Update()
    {
        if (Input.GetKeyDown(KeyCode.Escape))
        {
            Application.Quit(0);
        }
        guiManager.Wood.text = barricadeMaterials.ToString();
        guiManager.Ammo.text = ammo.ToString();
        Move();
        RunSwitch();
        SelectWeapon();
        Interact();

        if (actualHealth <= 0)
        {
            if (audio != null && lose != null && (nextMapeTime2 + 1) <= Time.time)
            {
                audio.PlayOneShot(lose);
                nextMapeTime2 = nextMapeTime + Time.time;
            }
            if (nextMapeTime2 <= Time.time) {
                SceneManager.LoadScene(SceneManager.GetActiveScene().name, LoadSceneMode.Single);
            }
        }

        float hpInPrcent = (actualHealth / (health / 100.0f));
        guiManager.SetHealth((1.0f / 100.0f) * hpInPrcent);
    }

    void FixedUpdate()
    {
        Rotate();
    }

    void Move()
    {
        rigidBody.MovePosition(
            transform.position + 
            (transform.forward * (run ? runSpeed : speed) * Input.GetAxis("Vertical") * Time.deltaTime) +
            (transform.right * (run ? runSpeed : speed) * Input.GetAxis("Horizontal") * Time.deltaTime)
        );
    }

    public void Damage(float damage)
    {
        actualHealth -= damage;
    }

    void Rotate()
    {
        rigidBody.freezeRotation = false;
        transform.Rotate(new Vector3(0, rotateSpeed * Input.GetAxis("Mouse X") * mouseSensitive * Time.deltaTime, 0));
        if (
            ((playerCamera.transform.localEulerAngles.x >= 270 && playerCamera.transform.localEulerAngles.x <= 360) &&
            playerCamera.transform.localEulerAngles.y == 0 &&
            playerCamera.transform.localEulerAngles.z == 0) ||
            ((playerCamera.transform.localEulerAngles.x <= 90 && playerCamera.transform.localEulerAngles.x >= 0) &&
            playerCamera.transform.localEulerAngles.y == 0 &&
            playerCamera.transform.localEulerAngles.z == 0)
        ) {
            playerCamera.transform.Rotate(new Vector3(rotateSpeed * -Input.GetAxis("Mouse Y") * mouseSensitive * Time.deltaTime, 0, 0));
        } else if (
            ((playerCamera.transform.localEulerAngles.x >= 270 && playerCamera.transform.localEulerAngles.x <= 360) &&
            playerCamera.transform.localEulerAngles.y == 180 &&
            playerCamera.transform.localEulerAngles.z == 180)
        ) {
            playerCamera.transform.Rotate(new Vector3(rotateSpeed * (-Input.GetAxis("Mouse Y") > 0 ? -Input.GetAxis("Mouse Y") : 0) * mouseSensitive * Time.deltaTime, 0, 0));
        } else if (
          ((playerCamera.transform.localEulerAngles.x <= 90 && playerCamera.transform.localEulerAngles.x >= 0) &&
          playerCamera.transform.localEulerAngles.y == 180 &&
          playerCamera.transform.localEulerAngles.z == 180)
        ) {
            playerCamera.transform.Rotate(new Vector3(rotateSpeed * (-Input.GetAxis("Mouse Y") < 0 ? -Input.GetAxis("Mouse Y") : 0) * mouseSensitive * Time.deltaTime, 0, 0));
        }
        else
        {
            playerCamera.transform.Rotate(new Vector3(rotateSpeed * -Input.GetAxis("Mouse Y") * mouseSensitive * Time.deltaTime, 0, 0));
        }
        rigidBody.freezeRotation = true;
    }

    void RunSwitch()
    {
        if (Input.GetAxisRaw("Run") > 0)
        {
            run = true;
        }
        else
        {
            run = false;
        }
    }

    void SelectWeapon()
    {
        if (weaponList.Count > 0)
        {
            WeaponManager weaponManager = weaponList[selectedWeapon].GetComponent<WeaponManager>();
            if (weaponManager != null) {
                weaponManager.player = this;
                Debug.Log(weaponList.Count);
                if (Input.GetAxis("Mouse ScrollWheel") > 0 && selectTime < Time.time)
                {
                    if (weaponManager != null && createWeapon != null)
                    {
                        Destroy(createWeapon);
                    }
                }
                else if (Input.GetAxis("Mouse ScrollWheel") < 0 && selectTime < Time.time)
                {
                    if (weaponManager != null && createWeapon != null)
                    {
                        Destroy(createWeapon);
                    }
                }
                weaponManager.player = this;
                if (weaponManager != null && createWeapon == null)
                {
                    createWeapon = Instantiate(weaponList[selectedWeapon]) as GameObject;
                    createWeapon.transform.parent = playerCamera.transform;
                    createWeapon.transform.localPosition = Vector3.zero;
                    createWeapon.transform.localEulerAngles = Vector3.zero;
                }
            }
            if (Input.GetAxis("Mouse ScrollWheel") > 0 && selectTime < Time.time)
            {
                if (weaponList.Count - 1 > selectedWeapon)
                {
                    selectedWeapon += 1;
                }
                else
                {
                    selectedWeapon = 0;
                }
                selectTime = selectRate + Time.time;
            }
            else if (Input.GetAxis("Mouse ScrollWheel") < 0 && selectTime < Time.time)
            {
                if (selectedWeapon > 0)
                {
                    selectedWeapon -= 1;
                }
                else
                {
                    selectedWeapon = weaponList.Count - 1;
                }
                selectTime = selectRate + Time.time;
            }
        }
    }

    void Interact()
    {
        Ray ray = playerCamera.ScreenPointToRay(Input.mousePosition);
        RaycastHit hit;
        if (Physics.Raycast(ray, out hit, 2))
        {
            if (hit.transform.CompareTag("BarricadeField") || hit.transform.CompareTag("Interact") || hit.transform.gameObject.layer == LayerMask.NameToLayer("BuildPlace"))
            {
                BlockManager blockManager = hit.transform.GetComponent<BlockManager>();
                if (blockManager == null || blockManager.blockType != BlockManager.BlockType.Barricade) {
                    guiManager.InteractVerifier(true, handImage);
                    if (hit.transform.gameObject.layer == LayerMask.NameToLayer("BuildPlace"))
                    {
                        guiManager.InteractVerifier(true, spikesImage);
                    }
                }
                else
                {
                    guiManager.InteractVerifier(false, handImage);
                }
            }
            else
            {
                guiManager.InteractVerifier(false, handImage);
            }
            if (Input.GetAxisRaw("Build") > 0 && buildTime < Time.time && barricadeMaterials > 0 && hit.transform.tag == "BarricadeField")
            {
                BarricadeManager barricadeManager = hit.transform.GetComponent<BarricadeManager>();
                if (barricadeManager.health < (barricadeManager.barricadePlanks.Count * 50))
                {
                    barricadeManager.addPlank();
                    barricadeMaterials--;
                    buildTime = buildRate + Time.time;
                }
            }
            if (Input.GetAxisRaw("Build") > 0 && hit.transform.tag == "Interact")
            {
            }
            if (Input.GetKeyDown(KeyCode.E) && hit.transform.tag == "Interact")
            {
                BlockManager blockManager = hit.transform.GetComponent<BlockManager>();
                blockManager.Action();
            }
            else if (hit.transform.gameObject.layer == LayerMask.NameToLayer("BuildPlace") && Input.GetKeyDown(KeyCode.E) && buildTime < Time.time && barricadeMaterials > 2)
            {
                BlockManager blockManager = spikes.GetComponent<BlockManager>();
                if (blockManager != null)
                {
                    barricadeMaterials-=3;
                    Instantiate<GameObject>(spikes, hit.point, transform.rotation);
                    buildTime = buildRate + Time.time;
                }
            }
        }
        else
        {
            guiManager.InteractVerifier(false);
        }
    }
}