using System;
using System.Collections;
using AibisDream.Framework;
using AibisDream.Kit;
using Newtonsoft.Json;
using UnityEngine;
using Yarn.Unity;

namespace AibisDream
{
    public class EnvironmentManager : Singleton<EnvironmentManager>
    {
        public bool initOnAwake = true;
        public TimesOfDay defaultTime;
        public Weather defaultWeather;
        
        private AbsScenePart[] _absSceneParts;

        private readonly EnvironmentData _environmentData = new();

        public override void OnSingletonInit()
        {
            StorageSystem.Instance.RegisterData(_environmentData);
            _environmentData.OnLoad += OnLoad;
            if (initOnAwake)
            {
                InitEnvironment(defaultTime, defaultWeather);
            }
        }
        
        public override void OnSingletonDestroy()
        {
            StorageSystem.Instance.UnregisterData<EnvironmentData>();
            _environmentData.OnLoad -= OnLoad;
        }

        private void OnLoad()
        {
            InitEnvironment(_environmentData.curTime, _environmentData.curWeather);
        }

        public void InitEnvironment(TimesOfDay timeOfDay, Weather weather)
        {
            if (_environmentData.isInit)
            {
                Debug.Log("已经初始化过了");
                return;
            }
            
            _absSceneParts = GetComponentsInChildren<AbsScenePart>(true);
            foreach (var part in _absSceneParts)
            {
                part.Init(timeOfDay, weather);
            }
            
            _environmentData.curTime = timeOfDay;
            _environmentData.curWeather = weather;
            _environmentData.isInit = true;
        }
        
        public void SetTimeOfDay(TimesOfDay timeOfDay)
        {
            foreach (var part in _absSceneParts)
            {
                part.OnTimeChange(timeOfDay);
            }
            
            _environmentData.curTime = timeOfDay;
        }

        public void SetWeather(Weather weather)
        {
            foreach (var part in _absSceneParts)
            {
                part.OnWeatherChange(weather);
            }
            
            _environmentData.curWeather = weather;
        }
    }
    
    public static class EnvironmentYarnCommand
    {
        [YarnCommand("init_environment")]
        public static void InitEnvironment(string timeOfDay, string weatherType = "Sunny")
        {
            if (!Enum.TryParse<TimesOfDay>(timeOfDay, out var time))
            {
                Debug.Log($"{timeOfDay}是不存在的时间");
                return;
            }
            
            if (!Enum.TryParse<Weather>(weatherType, out var weather))
            {
                Debug.Log($"{weatherType}是不存在的天气");
                return;
            }
            
            EnvironmentManager.Instance.InitEnvironment(time, weather);
        }
        
        [YarnCommand("set_time_of_day")]
        public static void SetTimeOfDay(string timeOfDay)
        {
            if (!Enum.TryParse<TimesOfDay>(timeOfDay, out var time))
            {
                Debug.Log($"{timeOfDay}是不存在的时间");
                return;
            }
            
            EnvironmentManager.Instance.SetTimeOfDay(time);
        }
        
        [YarnCommand("set_weather")]
        public static void SetWeather(string weatherType)
        {
            if (!Enum.TryParse<Weather>(weatherType, out var weather))
            {
                Debug.Log($"{weatherType}是不存在的天气");
                return;
            }
            
            EnvironmentManager.Instance.SetWeather(weather);
        }
    }

    [Serializable]
    public class EnvironmentData : IData
    {
        [JsonIgnore] public bool isInit;
        public TimesOfDay curTime;
        public Weather curWeather;

        public event Action OnLoad;
        
        public IEnumerator Load()
        {
            OnLoad?.Invoke();
            yield break;
        }
    }
}