using TMPro;
using Unity.VisualScripting;
using UnityEngine;
using UnityEngine.Rendering;
using UnityEngine.UI;
using System;
using static COSXML.Model.Object.SelectObjectResult;
using UnityEngine.UIElements;


[UnitCategory("Custom")]
public class StateChangeNode : Unit
{
    [DoNotSerialize]
    public ControlInput enter { get; private set; }

    [DoNotSerialize]
    public ControlInput show { get; private set; }

    [DoNotSerialize]
    public ControlInput rotate { get; private set; }

    [DoNotSerialize]
    public ControlOutput exit { get; private set; }

    [DoNotSerialize]
    public ValueInput mainSceneInput { get; private set; }

    [DoNotSerialize]
    public ValueInput targetInput { get; private set; }

    [DoNotSerialize]
    public ValueInput radiusInput { get; private set; }

    [DoNotSerialize]
    public ValueInput switchspeedInput { get; private set; }

    [DoNotSerialize]
    public ValueInput frequencyInput { get; private set; }

    private GameObject mainScene;
    private GameObject target;
    private float radius;
    private float state = 0;
    private float state2 = 0;
    private float time = 0;
    private float switchspeed;
    private float size = 0.2f;
    private float frequency;

    private bool setface = true;
    private Quaternion rotation;
    private Quaternion localrotation;


    protected override void Definition()
    {
        enter = ControlInput("enter", (flow) =>
        {
            mainScene = flow.GetValue<GameObject>(mainSceneInput);
            radius = flow.GetValue<float>(radiusInput);
            var renderer = mainScene.GetComponent<MeshRenderer>();
            var material = renderer.material;
            material.SetFloat("_radius",radius);
            rotation = mainScene.transform.rotation;
            return exit;
        });

        show = ControlInput("show", (flow) =>
        {
            switchspeed = flow.GetValue<float>(switchspeedInput);
            mainScene = flow.GetValue<GameObject>(mainSceneInput);
            target = flow.GetValue<GameObject>(targetInput);
            frequency = flow.GetValue<float>(frequencyInput);
            var renderer = mainScene.GetComponent<MeshRenderer>();
            var material = renderer.material;

            
            if (setface && target != null)
            {
                var sita = time * frequency * 0.628f;
                sita = Mathf.Repeat(sita - mainScene.transform.rotation.y + Mathf.PI, Mathf.PI * 2) - Mathf.PI + mainScene.transform.rotation.y;
                time = sita / 0.628f / frequency;

                setface = false;
                Vector3 pos = target.transform.position - mainScene.transform.position;
                pos.y = 0;
                pos = pos.normalized;
                Vector3 forward = -mainScene.transform.forward;
                var dot = Vector3.Dot(forward, pos);
                var cross = Vector3.Cross(forward, pos);
                sita = Mathf.Acos(dot) * Mathf.Rad2Deg;
                if (cross.y > 0) { sita *= -1; }
                if (Math.Abs(sita) > 0.02)
                {
                    //mainScene.transform.Rotate(-Vector3.up, sita);
                    rotation = mainScene.transform.rotation * Quaternion.Euler(0f, -sita, 0f);
                }
                localrotation = mainScene.transform.rotation;
                material.SetFloat("_time", time);
            }
            if (state2 <= 1)
            {
                state2 += Time.deltaTime * switchspeed;
                material.SetFloat("_state2", state2);
                mainScene.transform.rotation = Quaternion.Lerp(localrotation, rotation, state2);
            }
            else if (state <= 1)
            {
                state += Time.deltaTime * switchspeed;
                material.SetFloat("_state", state);
            }
            else if (size <= 1)
            {
                size += Time.deltaTime * switchspeed;
                material.SetFloat("_size", size);
            }

            return exit;
        });

        rotate = ControlInput("rotate", (flow) =>
        {
            if (!setface)
            {
                time = 0;
                setface = true;
            }
            switchspeed = flow.GetValue<float>(switchspeedInput);
            mainScene = flow.GetValue<GameObject>(mainSceneInput);
            frequency = flow.GetValue<float>(frequencyInput);
            var renderer = mainScene.GetComponent<MeshRenderer>();
            var material = renderer.material;
            if (state <=0) time += Time.deltaTime;
            //if (time > PI2) time -= PI2;
            if (state2 >= 0 )
            {
                if (size >=0.2)
                {
                    size -= Time.deltaTime * switchspeed;
                    material.SetFloat("_size", size);
                }
                else if (state >= 0)
                {
                    state -= Time.deltaTime * switchspeed;
                    material.SetFloat("_state", state);
                }
                else
                {
                    state2 -= Time.deltaTime * switchspeed;
                    material.SetFloat("_state2", state2);
                }
            }
            material.SetFloat("_time", time);
            material.SetFloat("_Frequency", frequency);
            return exit;
        });

        mainSceneInput = ValueInput<GameObject>("mainSceneInput");
        targetInput = ValueInput<GameObject>("target");
        radiusInput = ValueInput<float>("radius", -3f);
        switchspeedInput = ValueInput<float>("switchspeed", 1f);
        frequencyInput = ValueInput<float>("frequency", 1f);
        exit = ControlOutput("exit");
        Succession(enter, exit);
    }

 
}