using System;
using System.Collections.Generic;
using DG.Tweening;
using UnityEngine;

namespace Ichni.RhythmGame.ThemeBundles.DepartureToMultiverse
{
    public partial class DTMTrail : EnvironmentObject, IHaveTrail, IHaveInteraction
    {
        #region [暴露属性字段] Exposed Fields
        public GameObject headPoint, headCircle;
        public GameObject trailBody;
        public bool isHeadEnabled;
        
        public List<Renderer> renderers;
        public ParticleSystem headCircleParticle;
        public TrailRenderer trailRenderer { get; set; }
        
        public FlexibleFloat visibleTimeLength;
        public FlexibleBool enableTimes;
        public float enableProcessTime = 0.5f;
        public float headSize = 1f;
        
        public FlexibleFloat headRotateSpeed;
         
        public override bool haveEmission => true;
        #endregion
        
        #region [生命周期与工厂] Lifecycle & Factory
        public static DTMTrail GenerateElement(string elementName, Guid id, List<string> tags,
            bool isFirstGenerated, string themeBundleName, string objectName, GameElement parentElement, 
            bool isStatic, FlexibleFloat visibleTimeLength, FlexibleBool enableTimes, FlexibleFloat headRotateSpeed, float enableProcessTime, 
            float headSize)
        {
            DTMTrail dtmTrail = EnvironmentObject.GenerateElement(elementName, id, tags,
                isFirstGenerated, themeBundleName, objectName, parentElement, isStatic).GetComponent<DTMTrail>();
            
            dtmTrail.isHeadEnabled = false;
            dtmTrail.visibleTimeLength = visibleTimeLength;
            dtmTrail.enableTimes = enableTimes;
            dtmTrail.headRotateSpeed = headRotateSpeed;
            dtmTrail.enableProcessTime = enableProcessTime;
            dtmTrail.headSize = headSize;
            
            return dtmTrail;
        }

        public override void SetDefaultSubmodules()
        {
            base.SetDefaultSubmodules();
            colorSubmodule.emissionEnabled = true;
            colorSubmodule.originalEmissionColor = Color.white;
            colorSubmodule.originalEmissionIntensity = 1;
        }

        public override void FirstSetUpObject(bool isFirstGenerated)
        {
            //SetUpTweeners();
            trailRenderer = trailBody.GetComponent<TrailRenderer>();
            var rotationBySpeedModule = headCircleParticle.rotationBySpeed;
            rotationBySpeedModule.z = 0;
            headPoint.transform.localScale = Vector3.zero;
            headCircle.transform.localScale = Vector3.zero;
            trailRenderer.emitting = false;
            renderers.ForEach(rend => rend.InitializeShader());
        }
        
        public override void WhenStart()
        {
            base.WhenStart();
            trailRenderer.emitting = true;
            trailRenderer.Clear();
            
            headPoint.gameObject.SetActive(false);
            headCircle.gameObject.SetActive(false);
        }

        public override void Refresh()
        {
            base.Refresh();
            
            renderers.ForEach(rend =>
            {
                rend.material.SetColor("_BaseColor", colorSubmodule.currentBaseColor);
                rend.material.SetColor("_EmissionColor",  colorSubmodule.GetCurrentEmissionColor());
            });
        }
        #endregion

        #region [事件动画逻辑] Event Animation Logic
        private void Update()
        {
            float songTime = CoreServices.TimeProvider.SongTime;
            enableTimes.UpdateFlexibleBool(songTime);
            if(enableTimes.value && !isHeadEnabled)
            {
                EnableHead();
                isHeadEnabled = true;
            }
            else if(!enableTimes.value && isHeadEnabled)
            {
                DisableHead();
                isHeadEnabled = false;
            }

            visibleTimeLength.UpdateFlexibleFloat(songTime);
            if (visibleTimeLength.animations.Count > 0)
            {
                trailRenderer.time = visibleTimeLength.value;
            }
            
            if (isHeadEnabled && headRotateSpeed.animations.Count > 0)
            {
                headRotateSpeed.UpdateFlexibleFloat(songTime);
                var rotationBySpeedModule = headCircleParticle.rotationBySpeed;
                rotationBySpeedModule.z = headRotateSpeed.value;
            }
        }

        private Sequence enableHeadSequence;
        private Sequence disableHeadSequence;
        private Sequence headBounceSequence;

        private void EnableHead()
        {
            enableHeadSequence?.Kill(true);
            disableHeadSequence?.Kill(true);
            
            enableHeadSequence = DOTween.Sequence();
            enableHeadSequence.Append(headPoint.transform.DOScale(headSize, enableProcessTime).SetEase(Ease.OutQuad));
            enableHeadSequence.Join(headCircle.transform.DOScale(headSize, enableProcessTime).SetEase(Ease.OutQuad));
            enableHeadSequence.OnStart(() =>
            {
                headPoint.gameObject.SetActive(true);
                headCircle.gameObject.SetActive(true);
            });
            enableHeadSequence.Play();
        }

        private void DisableHead()
        {
            enableHeadSequence?.Kill(true);
            disableHeadSequence?.Kill(true);
            
            disableHeadSequence = DOTween.Sequence();
            disableHeadSequence.Append(headPoint.transform.DOScale(0, enableProcessTime).SetEase(Ease.OutQuad));
            disableHeadSequence.Join(headCircle.transform.DOScale(0, enableProcessTime).SetEase(Ease.OutQuad));
            disableHeadSequence.OnComplete(() =>
            {
                headPoint.gameObject.SetActive(false);
                headCircle.gameObject.SetActive(false);
            });
            disableHeadSequence.Play();
        }
        
        public void TriggerInteraction()
        {
            headBounceSequence = DOTween.Sequence();
            headBounceSequence.Append(headPoint.transform.DOBlendableScaleBy(Vector3.one * 0.2f, 0.2f).SetEase(Ease.OutBack));
            headBounceSequence.Join(headCircle.transform.DOBlendableScaleBy(Vector3.one * 0.2f, 0.2f).SetEase(Ease.OutBack));
            headBounceSequence.Append(headPoint.transform.DOBlendableScaleBy(Vector3.one * -0.2f, 0.2f).SetEase(Ease.OutBack));
            headBounceSequence.Join(headCircle.transform.DOBlendableScaleBy(Vector3.one * -0.2f, 0.2f).SetEase(Ease.OutBack));
            headBounceSequence.SetAutoKill(false);
        }
        #endregion
    }

}