using ChivaXR.VR;
using UnityEngine;
using VRTK;

public class InteractableHandHint : MonoBehaviour
{
    private VRTK_InteractableObject interactable;
    private CVR_TriggerTool triggerTool;
    private SDK_BaseController.ControllerHand currentTouchHand;
    private bool isUseTrigger = true;

    public string gripInfo_Hold = "侧键-放下";
    public string gripInfo_No = "侧键-拾取";
    public string triggerInfo = "扳机键-使用";

    /// <summary>
    /// 操作物
    /// </summary>
    private Transform operationGo;
    /// <summary>
    /// 流程手柄管理
    /// </summary>
    private HandHintManager handHintManager;

    /// <summary>
    /// 
    /// </summary>
    /// <param name="interactable">工具</param>
    /// <param name="OpHandHintPoint">操作物提</param>
    /// <param name="isUseTrigger">是否使用扳机</param>
    public void InitInteractable(VRTK_InteractableObject interactable, Transform OpHandHintPoint, bool isUseTrigger = true)
    {
        RemoveInteractable();

        handHintManager = GetComponent<HandHintManager>();

        this.interactable = interactable;
        this.triggerTool = interactable.GetComponent<CVR_TriggerTool>();
        this.operationGo = OpHandHintPoint;
        this.isUseTrigger = isUseTrigger;

        if (interactable == null || OpHandHintPoint == null)
        {
            return;
        }

        interactable.InteractableObjectGrabbed += Grab;
        interactable.InteractableObjectUngrabbed += UnGrab;

        interactable.InteractableObjectUsed += Use;
        interactable.InteractableObjectUnused += UnUse;
    }

    public void RemoveInteractable()
    {
        if (interactable == null) return;

        if (interactable.IsGrabbed())
        {
            HandHintController.GetInstance().ShowHandHint(currentTouchHand, SDK_BaseController.ButtonTypes.Grip);
            HandHintController.GetInstance().UpdateToolTipsText(currentTouchHand, SDK_BaseController.ButtonTypes.Grip, gripInfo_Hold);
            handHintManager.OperationHintState(operationGo, false);

            LearningUIController.Instance.SetText("");
        }

        HandHintController.GetInstance().CloseHandHint(currentTouchHand, SDK_BaseController.ButtonTypes.Trigger);

        interactable.InteractableObjectGrabbed -= Grab;
        interactable.InteractableObjectUngrabbed -= UnGrab;

        interactable.InteractableObjectUsed -= Use;
        interactable.InteractableObjectUnused -= UnUse;

        interactable = null;
        triggerTool = null;
        operationGo = null;
    }

    public void Grab(object sender, InteractableObjectEventArgs e)
    {
        if (operationGo != null)
        {
            handHintManager.OperationHintState(operationGo,true);
            handHintManager.HandHintState(false, Vector3.zero);
        }

        currentTouchHand = interactable.GetComponent<InteractableHintElement>().currentTouchHand;
        HandHintController.GetInstance().CloseHandHint(currentTouchHand, SDK_BaseController.ButtonTypes.Grip);
    }
    public void UnGrab(object sender, InteractableObjectEventArgs e)
    {
        if (isUseTrigger)
        {
            if (interactable != null)
                handHintManager.HandHintState(true, interactable.transform.position);
        }
    }

    /// <summary>
    /// 抓取状态下的触发区域-提示检测
    /// </summary>
    /// <param name="state"></param>
    private void TriggerHint_RangeCheck(bool state)
    {
        if (state)
        {
            HandHintController.GetInstance().ShowHandHint(currentTouchHand, SDK_BaseController.ButtonTypes.Trigger);
            LearningUIController.Instance.SetText("请按扳机键，使用工具");
        }
        else
        {
            HandHintController.GetInstance().CloseHandHint(currentTouchHand, SDK_BaseController.ButtonTypes.Trigger);
            LearningUIController.Instance.SetText("请移动工具到操作指示位置");
        }
    }

    public void Use(object sender, InteractableObjectEventArgs e)
    {
        if (triggerTool == null) return;
        if (Vector3.Distance(triggerTool.triggerPoint.position, operationGo.position) >= triggerTool.triggerRange)
        {
            return;
        }
        handHintManager.OperationHintState(operationGo,false);
        var type = interactable.GetComponent<CVR_ToolTypeFlags>().CVR_ToolType;
        switch (type)
        {
            case CVR_ToolType.扳手01:
                LearningUIController.Instance.SetText("请扣动扳机，使用扳手拆卸螺丝");
                break;
        }

        handHintManager.HandHintState(false, interactable.transform.position);
    }
    public void UnUse(object sender, InteractableObjectEventArgs e)
    {
        handHintManager.OperationHintState(operationGo, true);
        HandHintController.GetInstance().CloseHandHint(currentTouchHand, SDK_BaseController.ButtonTypes.Trigger);
        interactable=null;
    }

    void Update()
    {
        if (interactable == null) return;
        if (!interactable.IsGrabbed()) return;

        if (!interactable.IsUsing() && triggerTool != null)
        {
            if (Vector3.Distance(triggerTool.triggerPoint.position, operationGo.position) <= triggerTool.triggerRange)
            {
                TriggerHint_RangeCheck(true);
            }
            else
            {
                TriggerHint_RangeCheck(false);
            }
        }
    }
}