namespace ChivaXR.VR
{
    using System.Collections;
    using System.Collections.Generic;
    using UnityEngine;
    using VRTK;

    [RequireComponent(typeof(CVR_ToolTypeFlags))]
    public class CVR_InteractableVRTK : VRTK_InteractableObject, IVR_Interactable
    {
        private GameObject interactableCurrentHand;
        #region 接口IVR_Interactable

        /// <summary>
        /// 当前工具类型
        /// </summary>
        public CVR_ToolType toolType
        {
            get
            {
                if (toolTypeFlags == null)
                {
                    toolTypeFlags = this.GetComponent<CVR_ToolTypeFlags>();
                }
                return toolTypeFlags.CVR_ToolType;
            }
        }
        private CVR_ToolTypeFlags toolTypeFlags;

        /// <summary>
        /// 获取当前工具类型
        /// </summary>
        /// <returns></returns>
        public CVR_ToolType GetToolType()
        {
            return toolType;
        }
        public event CVR_InteractableObjectEventHandler CVR_InteractableObjectGrabbed;
        public event CVR_InteractableObjectEventHandler CVR_InteractableObjectPreUnGrabbed;
        public event CVR_InteractableObjectEventHandler CVR_InteractableObjectUsed;
        public event CVR_InteractableObjectEventHandler CVR_InteractableObjectUnused;

        protected override void Awake()
        {
            base.Awake();

            CVR_ToolManager.Instance.RegisterTool(toolType, this);
        }

        /// <summary>
        /// 检测按键状态
        /// </summary>
        /// <param name="btnType"></param>
        /// <param name="pressType"></param>
        /// <param name="controllerHand"></param>
        /// <returns></returns>
        public bool CVR_CheckButtonState(CVR_ButtonTypes btnType, CVR_ButtonPressTypes pressType)
        {
            return ChivaVRToVRTK.CheckButtonState(btnType, pressType, CVR_GetCurrentHand());
        }

        public Vector2 CVR_GetControllerAxis(CVR_ButtonTypes btnType)
        {
            return ChivaVRToVRTK.GetControllerAxis(btnType, CVR_GetCurrentHand());
        }

        /// <summary>
        /// 获取当前手部类型
        /// </summary>
        /// <returns></returns>
        public CVR_ControllerHand CVR_GetCurrentHand()
        {
            return ChivaVRToVRTK.GetChivaVR_ControllerHand(VRTK_DeviceFinder.GetControllerHand(interactableCurrentHand));
        }

        public GameObject CVR_GetHeadsetCamera()
        {
            return VRTK_SDK_Bridge.GetHeadsetCamera().gameObject;
        }

        public GameObject CVR_GetInteractableObject()
        {
            return interactableCurrentHand;
        }

        public GameObject CVR_GetCurrentObject()
        {
            return this.gameObject;
        }

        public bool CVR_IsGrabbed()
        {
            return IsGrabbed();
        }
        public bool CVR_IsUsing()
        {
            return IsUsing();
        }

        public void ForceStopUsing()
        {
            GetUsingScript().ForceStopUsing();
        }

        #endregion

        #region VRTK
        public override void Grabbed(VRTK_InteractGrab currentGrabbingObject = null)
        {
            base.Grabbed(currentGrabbingObject);
            interactableCurrentHand = currentGrabbingObject.gameObject;
            OnChivaVRInteractableObjectGrabbde(SetChivaVRInteractableObjectEvent(interactableCurrentHand));
        }

        public override void Ungrabbed(VRTK_InteractGrab previousGrabbingObject = null)
        {
            GameObject previousGrabbingGameObject = (previousGrabbingObject != null ? previousGrabbingObject.gameObject : null);
            OnChivaVRInteractableObjectPreUnGrabbde(SetChivaVRInteractableObjectEvent(previousGrabbingGameObject));

            base.Ungrabbed(previousGrabbingObject);
            interactableCurrentHand = null;
        }
        public override void StartUsing(VRTK_InteractUse currentUsingObject = null)
        {
            OnChivaVRInteractableObjectUsed(SetChivaVRInteractableObjectEvent(interactableCurrentHand));

            base.StartUsing(currentUsingObject);
        }


        public override void StopUsing(VRTK_InteractUse previousUsingObject = null, bool resetUsingObjectState = true)
        {
            OnChivaVRInteractableObjectUnUsed(SetChivaVRInteractableObjectEvent(interactableCurrentHand));

            base.StopUsing(previousUsingObject, resetUsingObjectState);
        }

        public virtual void OnChivaVRInteractableObjectPreUnGrabbde(CVR_InteractableObjectEventArgs e)
        {
            CVR_InteractableObjectPreUnGrabbed?.Invoke(this, e);
        }
        public virtual void OnChivaVRInteractableObjectGrabbde(CVR_InteractableObjectEventArgs e)
        {
            CVR_InteractableObjectGrabbed?.Invoke(this, e);
        }
        public virtual void OnChivaVRInteractableObjectUsed(CVR_InteractableObjectEventArgs e)
        {
            CVR_InteractableObjectUsed?.Invoke(this, e);
        }
        public virtual void OnChivaVRInteractableObjectUnUsed(CVR_InteractableObjectEventArgs e)
        {
            CVR_InteractableObjectUnused?.Invoke(this, e);
        }
        public CVR_InteractableObjectEventArgs SetChivaVRInteractableObjectEvent(GameObject interactingObject)
        {
            CVR_InteractableObjectEventArgs e;
            e.interactingObject = interactingObject;
            return e;
        }

        #endregion
    }

    /// <summary>
    /// ChivaVR跟VRTK的转换工具
    /// </summary>
    public class ChivaVRToVRTK
    {
        /// <summary>
        /// 检测按钮状态
        /// </summary>
        /// <param name="btnType">按键类型</param>
        /// <param name="pressType">按下类型</param>
        /// <param name="controllerHand">手部类型</param>
        /// <returns></returns>
        public static bool CheckButtonState(CVR_ButtonTypes btnType, CVR_ButtonPressTypes pressType, CVR_ControllerHand controllerHand)
        {
            return VRTK_SDK_Bridge.GetControllerButtonState(GetButtonTypes(btnType), GetPressTypes(pressType)
                , VRTK_ControllerReference.GetControllerReference(GetControllerHand(controllerHand)));
        }

        /// <summary>
        /// 检测按钮状态
        /// </summary>
        /// <param name="btnType">按键类型</param>
        /// <param name="pressType">按下类型</param>
        /// <param name="controllerHand">手部类型</param>
        /// <returns></returns>
        public static Vector2 GetControllerAxis(CVR_ButtonTypes btnType, CVR_ControllerHand controllerHand)
        {
            return VRTK_SDK_Bridge.GetControllerAxis(GetButtonTypes(btnType),
                    VRTK_ControllerReference.GetControllerReference(GetControllerHand(controllerHand)));
        }

        /// <summary>
        /// 转化按键类型
        /// </summary>
        /// <param name="types"></param>
        /// <returns></returns>
        public static SDK_BaseController.ButtonTypes GetButtonTypes(CVR_ButtonTypes types)
        {
            switch (types)
            {
                case CVR_ButtonTypes.ButtonOne:
                    return SDK_BaseController.ButtonTypes.ButtonOne;
                case CVR_ButtonTypes.ButtonTwo:
                    return SDK_BaseController.ButtonTypes.ButtonTwo;
                case CVR_ButtonTypes.Grip:
                    return SDK_BaseController.ButtonTypes.Grip;
                case CVR_ButtonTypes.Trigger:
                    return SDK_BaseController.ButtonTypes.Trigger;
                case CVR_ButtonTypes.Touchpad:
                    return SDK_BaseController.ButtonTypes.Touchpad;
                case CVR_ButtonTypes.TouchpadTwo:
                    return SDK_BaseController.ButtonTypes.TouchpadTwo;
            }
            return SDK_BaseController.ButtonTypes.GripHairline;
        }
        public static SDK_BaseController.ButtonPressTypes GetPressTypes(CVR_ButtonPressTypes pressTypes)
        {
            switch (pressTypes)
            {
                case CVR_ButtonPressTypes.Press:
                    return SDK_BaseController.ButtonPressTypes.Press;
                case CVR_ButtonPressTypes.PressDown:
                    return SDK_BaseController.ButtonPressTypes.PressDown;
                case CVR_ButtonPressTypes.PressUp:
                    return SDK_BaseController.ButtonPressTypes.PressUp;
                case CVR_ButtonPressTypes.Touch:
                    return SDK_BaseController.ButtonPressTypes.Touch;
                case CVR_ButtonPressTypes.TouchDown:
                    return SDK_BaseController.ButtonPressTypes.TouchDown;
                case CVR_ButtonPressTypes.TouchUp:
                    return SDK_BaseController.ButtonPressTypes.TouchUp;
                default:
                    return SDK_BaseController.ButtonPressTypes.Touch;
            }
        }

        public static SDK_BaseController.ControllerHand GetControllerHand(CVR_ControllerHand controllerHand)
        {
            switch (controllerHand)
            {
                case CVR_ControllerHand.None:
                    return SDK_BaseController.ControllerHand.None;
                case CVR_ControllerHand.Left:
                    return SDK_BaseController.ControllerHand.Left;
                case CVR_ControllerHand.Right:
                    return SDK_BaseController.ControllerHand.Right;
                default:
                    return SDK_BaseController.ControllerHand.None;
            }
        }

        public static CVR_ControllerHand GetChivaVR_ControllerHand(SDK_BaseController.ControllerHand controllerHand)
        {
            switch (controllerHand)
            {
                case SDK_BaseController.ControllerHand.None:
                    return CVR_ControllerHand.None;
                case SDK_BaseController.ControllerHand.Left:
                    return CVR_ControllerHand.Left;
                case SDK_BaseController.ControllerHand.Right:
                    return CVR_ControllerHand.Right;
                default:
                    return CVR_ControllerHand.None;
            }
        }
    }
}