using System.Collections;
using System.Collections.Generic;
using Convention;
using UnityEngine;

namespace Demo.Game
{
    public class ParticleJudgement : IJudgementHookObject, IAssetBundleLoader
    {
        public static ParticleJudgement Make()
        {
            return new GameObject().AddComponent<ParticleJudgement>();
        }

        [Content, SerializeField] private Dictionary<IInteraction.JudgementLevel, string> AssetBundles = new();
        [Content, SerializeField] private Dictionary<IInteraction.JudgementLevel, GameObject> Prefabs = new();
        [Content, SerializeField] private Dictionary<IInteraction.JudgementLevel, float> Durations = new();

        public override IEnumerator UnloadScript()
        {
            yield return base.UnloadScript();
            foreach (var ab in AssetBundles)
                yield return this.UnloadAssetBundle(ab.Value);
        }

        /// <summary>
        /// 加载预制体作为子物体
        /// </summary>
        /// <param name="level">正整数, 0级判定为最佳判定, 判定等级对应会出现的粒子效果</param>
        /// <param name="ab"></param>
        /// <param name="prefab"></param>
        /// <param name="duration">判定效果会现形的持续时间</param>
        [Convention.RScript.Variable.Attr.Method]
        public IEnumerator Load(string level, string ab, string prefab, string duration)
        {
            var levelId = (IInteraction.JudgementLevel)int.Parse(level);

            AssetBundle assetBundle = null;
            yield return this.LoadAssetBundle(ab, x => assetBundle = x);
            var req = assetBundle.LoadAssetAsync<GameObject>(prefab);
            yield return req;
            GameObject sub = Instantiate(req.asset as GameObject);
            sub.SetActive(false);
            Prefabs.Add(levelId, sub);
            sub.transform.SetParent(transform);
            AssetBundles.Add(levelId, ab);
            Durations.Add(levelId, float.Parse(duration));
        }

        private void CreateParticle(GameObject prefab)
        {
            prefab.SetActive(true);
        }

        private void DestroyParticle(GameObject prefab)
        {
            prefab.SetActive(false);
        }

        public override void OnJudgement(IInteraction.JudgementLevel level)
        {
            if (Prefabs.TryGetValue(level, out var effect))
            {
                ConventionUtility.CreateSteps()
                    .Next(() => CreateParticle(effect))
                    .Wait(Durations[level], () => DestroyParticle(effect))
                    .Invoke();
            }
        }
    }
}