using Unity.Netcode;
using UnityEngine;
using UnityEngine.InputSystem;

[RequireComponent(typeof(CharacterController))]
public sealed class DeveloperPlayerController : MonoBehaviour
{
    [SerializeField, Min(0.1f)] private float walkSpeed = 5f;
    [SerializeField, Min(0.1f)] private float flySpeed = 12f;
    [SerializeField, Min(0.01f)] private float mouseSensitivity = 0.08f;
    [SerializeField, Min(0.1f)] private float gravity = 20f;
    [SerializeField, Range(1f, 89f)] private float verticalLookLimit = 85f;

    private CharacterController characterController;
    private Camera playerCamera;
    private float verticalVelocity;
    private float pitch;
    private bool isFlying;

    private void Awake()
    {
        if (NetworkManager.Singleton != null && NetworkManager.Singleton.IsListening)
        {
            gameObject.SetActive(false);
            return;
        }

        characterController = GetComponent<CharacterController>();
        playerCamera = GetComponentInChildren<Camera>(true);
        Cursor.lockState = CursorLockMode.Locked;
        Cursor.visible = false;

        foreach (Camera camera in FindObjectsByType<Camera>(FindObjectsSortMode.None))
            if (camera != playerCamera) camera.enabled = false;
    }

    private void Update()
    {
        if (Keyboard.current == null)
            return;

        if (Keyboard.current.fKey.wasPressedThisFrame)
            isFlying = !isFlying;

        UpdateLook();
        UpdateMovement();
    }

    private void UpdateLook()
    {
        if (Mouse.current == null)
            return;

        Vector2 mouseDelta = Mouse.current.delta.ReadValue() * mouseSensitivity;
        transform.Rotate(0f, mouseDelta.x, 0f, Space.Self);
        pitch = Mathf.Clamp(pitch - mouseDelta.y, -verticalLookLimit, verticalLookLimit);
        playerCamera.transform.localRotation = Quaternion.Euler(pitch, 0f, 0f);
    }

    private void UpdateMovement()
    {
        Vector2 input = new(
            (Keyboard.current.dKey.isPressed ? 1f : 0f) - (Keyboard.current.aKey.isPressed ? 1f : 0f),
            (Keyboard.current.wKey.isPressed ? 1f : 0f) - (Keyboard.current.sKey.isPressed ? 1f : 0f));
        if (input.sqrMagnitude > 1f)
            input.Normalize();

        float speed = Keyboard.current.leftShiftKey.isPressed ? flySpeed : walkSpeed;
        Vector3 direction = transform.right * input.x + transform.forward * input.y;

        if (isFlying)
        {
            direction += Vector3.up * ((Keyboard.current.spaceKey.isPressed ? 1f : 0f) -
                                       (Keyboard.current.leftCtrlKey.isPressed ? 1f : 0f));
            characterController.Move(direction.normalized * speed * Time.deltaTime);
            return;
        }

        if (characterController.isGrounded && verticalVelocity < 0f)
            verticalVelocity = -2f;
        verticalVelocity -= gravity * Time.deltaTime;
        characterController.Move((direction * speed + Vector3.up * verticalVelocity) * Time.deltaTime);
    }

    private void OnDisable()
    {
        Cursor.lockState = CursorLockMode.None;
        Cursor.visible = true;
    }
}