using System.Collections.Generic;
using System.Linq;
using asap.core;
using Capsule.Reward;
using cfg;
using GameCore;
using Newtonsoft.Json;
using UnityEngine;

namespace Capsule.Pack.Manager
{
    public static class CapsulePackDataEx
    {
        // 根据权重随机获取奖励
        public static ICapsuleReward GetRandomRewardIndex(this CapsulePackData data)
        {
            var reward =data.GetRemainRewards();
            var totalWeight=data.CalculateWeights(reward, out var weightRanges,out var canObtainRewards);
            if (totalWeight <= 0)
            {
                Debug.LogError("总权重为0");
                return reward.FirstOrDefault();
            }
            
            var randomValue = Random.Range(0, totalWeight);
            for (var i = 0; i < weightRanges.Count; i++)
                if (randomValue < weightRanges[i])
                    return canObtainRewards.ElementAt(i);
            return canObtainRewards.LastOrDefault();
        }
        public static List<ICapsuleReward> GetRemainRewards(this CapsulePackData data)
        {
            return data?.GetAllRewards().Where(r => !(data.CurrentProgress?.Contains(r.Index) ?? false))
                .Select(r => (ICapsuleReward)new EventToyMachineRewardAdapter(r, data.InflationRate)).ToList();
        }
        private static int CalculateWeights(this CapsulePackData data,List<ICapsuleReward> remainRewards, out List<int> weightRanges,out IEnumerable<ICapsuleReward> canObtainRewards)
        {
            canObtainRewards =data.GetCanObtainRewards(remainRewards).ToList();
            var  totalWeight = canObtainRewards.Sum(r => r.Weight);
            weightRanges= BuildWeightRanges(canObtainRewards);
            return totalWeight;
        }
        
        private static IEnumerable<ICapsuleReward> GetCanObtainRewards(this CapsulePackData data,List<ICapsuleReward> remainRewards)
        {
            return  remainRewards.Where(r=> data.CurrentProgressCount + 1 >= r.RoundLimit);
        }
        private static List<EventToyMachineReward> GetAllRewards(this CapsulePackData data)
        {
            var roundConfig = data.GetRoundConfig();
            if (roundConfig == null) return null;
                
            List<EventToyMachineReward> rewards = new();
            
            foreach (var id in roundConfig.RewardList)
            {
                var rewardConfig = data.Tables.TbEventToyMachineReward.Get(id);
                if (rewardConfig == null || rewards.Find(x => x.Index == rewardConfig.Index) != null)
                    continue;
                rewards.Add(rewardConfig);
            }
            return rewards;
        }
        private static List<int> BuildWeightRanges(IEnumerable<ICapsuleReward> canObtainRewards)
        {
            var weightRanges=new List<int>();
            var currentWeight = 0;

            foreach (var reward in canObtainRewards)
            {
                currentWeight += reward.Weight;
                weightRanges.Add(currentWeight);
            }
            return  weightRanges;
        }
        private static EventToyMachineRound GetRoundConfig(this CapsulePackData data)
        {
            var packConfig = data.GetPackConfig();
            var roundConfig = data.Tables.TbEventToyMachineRound.GetOrDefault(packConfig.DropID);
            if (roundConfig == null)
                Debug.LogError($"配置错误 约定 dropId配置 roundID packConfig.ID {packConfig.ID}");

            return roundConfig;
        }
        
        public static cfg.Pack GetPackConfig(this CapsulePackData data)
        {
            var packManager =
                data.Tables?.TbEventPackManager.GetOrDefault(data.MainConfig.PackManagerID[data.CurrentRoundCount]);
            if (packManager == null)
            {
                Debug.LogError(
                    $"CapsulePackManager GetPackConfig packManager is null EventPackManagerID {JsonConvert.SerializeObject(data.MainConfig.PackManagerID)} {data.CurrentRoundCount}");
                return null;
            }

            var vipLevel = GContext.container.Resolve<PlayerData>().PriceLv;
            if(vipLevel>=packManager.VIPPackList.Count)
                vipLevel=packManager.VIPPackList.Count-1;
            var packList = packManager.VIPPackList[vipLevel];
            var maxCount = data.CurrentProgressCount < packList.Count ? data.CurrentProgressCount : packList.Count - 1;
            var packConfigID = packManager.VIPPackList[vipLevel][maxCount];
            return data.Tables?.TbPack.GetOrDefault(packConfigID);
        }
        #region probility
        public static GeneralProbabilityData[] GetProbabilityData(this CapsulePackData data)
        {
            var rewardConfigs =data.GetAllRewards();
            var res = new GeneralProbabilityData[rewardConfigs.Count];
            var tbRewards = rewardConfigs;
            var totalWeight = tbRewards.Where(r => !data.IsClaimed(r.Index)).Sum(r => r.Weight);
            for (int i = 0; i < rewardConfigs.Count; i++)
            {
                res[i] = new GeneralProbabilityData
                {
                    Item = GetItemFromIndex(rewardConfigs[i],data.InflationRate),
                    Probability = tbRewards[i].Weight / (float)totalWeight,
                    IsClaimed =data.IsClaimed(rewardConfigs[i].Index)
                };
            }
            return res;
        }
        private static ItemData GetItemFromIndex(EventToyMachineReward config,float? inflate)
        {
            var rewardItemData = GContext.container.Resolve<PlayerItemData>()
                .GetItemDataByDropIdAndTypeLureInflation(inflate, config.DropID);
            return rewardItemData.FirstOrDefault();
        }
        private static  bool IsClaimed(this CapsulePackData data,int idx)
        {
            var remainConfigs = data.GetRemainRewards();
            var remainIndexes = new HashSet<int>(remainConfigs.Select(r => r.Index));
            return !remainIndexes.Contains(idx);
        }
        #endregion
    }
}