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

namespace SC.XR.Unity.Module_Tooltip
{
    public class Modules_Tooltip : MonoBehaviour
    {
        public enum TooltipRotationAxis
        {
            None,
            X,
            Y,
            Z,
            XY,
            XZ,
            YZ,
            XYZ
        }
        private Transform lable;

        [SerializeField]
        [Tooltip("Select the axis which object Lable will rotate.")]
        private TooltipRotationAxis rotationAxis = TooltipRotationAxis.XY;

        [SerializeField]
        [Tooltip("Select the target which object Lable will towards to." +
            "\nIf no target is selected,the head of SDKSystem will be used.")]
        private Transform RotationTarget;

        private Quaternion originalRotation;

        private bool readytState = false;

        private void Start()
        {
            GetReady();
        }
        private void Update()
        {
            HeadRotate();
        }
        private void GetReady()
        {
            lable = transform.Find("Lable");
            originalRotation = lable.rotation;
            if (RotationTarget == null)
            {
                RotationTarget = Camera.main.transform;
            }
            readytState = true;
        }
        private void HeadRotate()
        {
            if (RotationTarget == null)
            {
                RotationTarget = Camera.main.transform;
            }
            Vector3 headToTarger = RotationTarget.position - lable.position;

            //Too close to rotate
            if (headToTarger.sqrMagnitude < 0.01)
            {
                return;
            }

            bool useHeadUp = true;

            switch (rotationAxis)
            {
                case TooltipRotationAxis.None:
                    return;
                case TooltipRotationAxis.X:
                    headToTarger.x = 0;
                    useHeadUp = false;
                    break;
                case TooltipRotationAxis.Y:
                    headToTarger.y = 0;
                    useHeadUp = false;
                    break;
                case TooltipRotationAxis.Z:
                    headToTarger.x = 0;
                    headToTarger.y = 0;
                    break;
                case TooltipRotationAxis.XY:
                    useHeadUp = false;
                    break;
                case TooltipRotationAxis.XZ:
                    headToTarger.x = 0;
                    break;
                case TooltipRotationAxis.YZ:
                    headToTarger.y = 0;
                    break;
                case TooltipRotationAxis.XYZ:
                default:
                    break;
            }
            if (useHeadUp)
            {
                lable.rotation = Quaternion.LookRotation(-headToTarger, Camera.main.transform.up);
            }
            else
            {
                lable.rotation = Quaternion.LookRotation(-headToTarger);
            }
        }
        public TooltipRotationAxis API_GetTooltipRotationAxis()
        {
            if (!readytState)
            {
                GetReady();
            }
            return rotationAxis;
        }
        public void API_SetTooltipRotationAxis(TooltipRotationAxis newRotationAxis)
        {
            if (!readytState)
            {
                GetReady();
            }
            lable.rotation = originalRotation;
            rotationAxis = newRotationAxis;
        }
        public void API_SetTooltipRotationAxisTarget(Transform target)
        {
            if (!readytState)
            {
                GetReady();
            }
            if (target != null)
            {
                RotationTarget = target;
            }
        }
    }
}