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

/**
 * endless_port 无尽模式关卡配置表数据处理类
 * @Author: chenxin
 * @Date: 2020-10-10 17:11:23
 */
namespace KTGMGemClient
{
    public class EndlessPortConfig
    {
        /// <summary>
        /// 配置表数据
        /// </summary>
        public endless_port Config;

        /// <summary>
        /// 预先随机好的敌人数据，spawnAgent时直接取这个数据，不再动态随机
        /// </summary>
        public endless_enemy EnemyData;

        /// <summary>
        /// 掉落概率总权重，即：表中掉落概率那一项全部加起来
        /// </summary>
        public int DropTotalWeight;

        /// <summary>
        /// 关卡等级
        /// </summary>
        public int PortLevel;
    }

    public class EndlessPortData
    {
        /// <summary>
        /// 无尽模式关卡配置表
        /// </summary>
        private static List<endless_port> endlessPortList;

        private static List<EndlessPortConfig> portConfigList;

        /// <summary>
        /// 关卡配置字典
        /// </summary>
        private static Dictionary<int, List<EndlessPortConfig>> portDic;

        private static System.Random random;

        /// <summary>
        /// 最大关卡
        /// </summary>
        /// <value></value>
        private static int maxLevel { get; set; }
        public static int MaxLevel
        {
            get { return maxLevel; }
        }

        /// <summary>
        /// 数据初始化
        /// </summary>
        public static void Init()
        {
            random = new System.Random();
            endlessPortList = JsonDataCenter.GetList<endless_port>();
            portConfigList = new List<EndlessPortConfig>();
            portDic = new Dictionary<int, List<EndlessPortConfig>>();
            InitPortList();
        }

        /// <summary>
        /// 更新关卡数据的时候也重新初始化一次
        /// </summary>
        public static void InitPortList()
        {
            maxLevel = 0;
            int? preLevel = null;
            portConfigList.Clear();
            portDic.Clear();

            foreach (endless_port data in endlessPortList)
            {
                if (!GameConfig.IsNewbie && data.level < 0) continue;

                if (preLevel == null || preLevel != data.level)
                {
                    preLevel = data.level;
                    ++maxLevel;
                }

                EndlessPortConfig param = new EndlessPortConfig();
                param.Config = data;
                param.EnemyData = EndlessEnemyData.GetDataById(data.enemy_id);
                param.PortLevel = maxLevel;
                int totalWeight = 0;

                for (int i = 0; i < data.drop_rate.Count; ++i)
                {
                    totalWeight += data.drop_rate[i];
                }

                param.DropTotalWeight = totalWeight;
                portConfigList.Add(param);

                if (!portDic.ContainsKey(param.PortLevel))
                    portDic.Add(param.PortLevel, new List<EndlessPortConfig>());

                portDic[param.PortLevel].Add(param);
            }
        }

        /// <summary>
        /// 根据关卡等级获取关卡的所有波数据，如果本波次敌人数量为0，直接忽略掉
        /// </summary>
        /// <param name="level">关卡等级</param>
        /// <returns></returns>
        public static List<List<EndlessPortConfig>> GetLevelWaveData(int level)
        {
            List<List<EndlessPortConfig>> ret = new List<List<EndlessPortConfig>>();

            for (int i = 0; i < 5; ++i)
            {
                ret.Add(new List<EndlessPortConfig>());
            }

            List<EndlessPortConfig> allLevelData = portDic[level];

            foreach (EndlessPortConfig data in allLevelData)
            {
                if (data.Config.amount == 0) continue;

                ret[data.Config.wave - 1].Add(data);
            }

            for (int i = 0; i < ret.Count; ++i)
            {
                if (ret[i].Count == 0)
                {
                    ret.Remove(ret[i]);
                    --i;
                }
            }

            return ret;
        }

        /// <summary>
        /// 根据关卡等级和波次获得该波次的所有敌人数量
        /// </summary>
        /// <param name="level"></param>
        /// <param name="wave"></param>
        /// <returns></returns>
        public static int GetWaveEnemiesCount(int level, int wave)
        {
            List<List<EndlessPortConfig>> list = GetLevelWaveData(level);

            if (list.Count == 0) return 0;

            List<EndlessPortConfig> waveData = list[wave];
            int ret = 0;

            for (int i = 0; i < waveData.Count; ++i)
            {
                int count = waveData[i].Config.amount;
                endless_enemy enemyData = EndlessEnemyData.GetDataById(waveData[i].Config.enemy_id);

                // WTF...
                if (enemyData.resource == 103)
                    count *= 2;

                ret += count;
            }

            return ret;
        }

        /// <summary>
        /// 根据关卡等级、波次、赛道获得击杀敌人掉落的奖励列表
        /// </summary>
        /// <param name="level">关卡等级</param>
        /// <param name="wave">波次</param>
        /// <param name="tunel">第几条赛道</param>
        /// <returns></returns>
        public static List<reward> GetDropRewardList(int level, int wave, int tunel)
        {
            List<reward> ret = new List<reward>();
            List<List<EndlessPortConfig>> levelData = GetLevelWaveData(level);

            if (levelData.Count == 0)
                throw new Exception($"当前关卡：{level}, 没有关卡数据");

            List<EndlessPortConfig> waveData = levelData[wave - 1];

            if (waveData.Count == 0)
                throw new Exception($"当前关卡：{level}，当前波次：{wave}，没有波次数据");

            for (int i = 0; i < waveData.Count; ++i)
            {
                if (waveData[i].Config.tunel != tunel) continue;

                for (int j = 0; j < waveData[i].Config.drop.Count; ++j)
                {
                    // 概率为0
                    if (waveData[i].Config.drop_rate[j] == 0) continue;

                    int val = random.Next(waveData[i].DropTotalWeight);

                    if (val <= waveData[i].Config.drop_rate[j])
                        // 命中
                        ret.Add(waveData[i].Config.drop[j]);
                }
            }

            return ret;
        }
    }
}