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

public class CameraController : MonoBehaviour {

	public static CameraController Instance {
		get;
		set;
	}

	public float smooth;
	public float distToTable;
	public Transform tablePlane;

	private Vector3 posVel = Vector3.zero;
	private Vector3 rotVel = Vector3.zero;
	private Vector3 menuPosition;
	private Quaternion menuRotation;

	private bool movesOnTable;
	private bool movesOnMenu;

	void Awake() {
		//Manage Singleton
		if (Instance != null && Instance != this)
			Destroy(gameObject);
		else
			Instance = this;
		DontDestroyOnLoad(gameObject);
	}

	void Start() {
		menuPosition = transform.position;
		menuRotation = transform.rotation;
	}

	void Update() {
		Vector3 pos, angles;
		if (movesOnTable) {
			pos = tablePlane.position + Vector3.up * distToTable;
			angles = (tablePlane.rotation * Quaternion.Euler(90, 0, 90)).eulerAngles;
			MoveSmoothly(pos, angles);
			float dist = Vector3.Distance(pos, transform.position);
			if (dist < 0.01) {
				movesOnTable = false;
				GUIController.Instance.ShowLobby();
			}
		}
		if (movesOnMenu) {
			pos = menuPosition;
			angles = menuRotation.eulerAngles;
			MoveSmoothly(pos, angles);
			float dist = Vector3.Distance(pos, transform.position);
			if (dist < 1) {
				movesOnMenu = false;
				GUIController.Instance.ShowMenu();
			}
		}

	}

	private void MoveSmoothly(Vector3 pos, Vector3 angles) {
		transform.position = Vector3.SmoothDamp(transform.position, pos, ref posVel, smooth);
		transform.rotation = Quaternion.Euler(Vector3.SmoothDamp(transform.rotation.eulerAngles, angles, ref rotVel, smooth));
	}

	public void MoveOnTable() {
		movesOnTable = true;
		movesOnMenu = false;
	}

	public void MoveOnMenu() {
		movesOnMenu = true;
		movesOnTable = false;
	}
}