import { STATUS } from './../consts/statusCode';

import { getGamedata } from './gamedata';
import { HeroModel } from '../db/Hero';
import { RoleModel } from '../db/Role';
import { PvpDefenseModel } from '../db/PvpDefense';
import Actor from './actor';

const moment = require('moment');

  export function genCode(len) {
    const chars = '123456789ABCDEFGHJKLMNPQRSTWXYZabcdefghijklmnopqrstuvwxyz';
    const charArr = chars.split('');
    let code = '';
    for (let i = 0; i < len; i++) {
      code += charArr[Math.floor(Math.random() * charArr.length)];
    }
    return code;
  }

  export function decodeStr(type, str, splitForm='|') {
    if(str == '&'|| !str) {
      return []
    } else {
      return str.split(splitForm).map(cur => {
        return decodeStrSingle(type,cur);
      });
    };
  }

  export function decodeStrSingle(type, str) { //单层，返回对象而不是数组
    let last = str.substr(str.length-1, 1);
    if(last == '&') str = str.substr(0, str.length - 1);
    if(str == '&'|| !str) {
      return {}
    } else {
      let arr = str.split('&');
      let result: any;
      switch (type) {
        case 'fixReward': {
          let [gid, count] = arr;
          if(isNaN(gid) || isNaN(count)) throw new Error('data table format wrong');
          result = { gid: parseInt(gid), count: parseInt(count)};
          break;
        }
        case 'conditionReward': {
          let [gid, count, condition] = arr;
          if(isNaN(gid) || isNaN(count)) throw new Error('data table format wrong');
          result = { gid: parseInt(gid), count: parseInt(count), condition: parseInt(condition) };
          break;
        }
        case 'randomReward': {
          let [gid, count, frequency] = arr;
          if(isNaN(gid) || isNaN(count)) throw new Error('data table format wrong');
          result = { gid: parseInt(gid), count: parseInt(count), frequency: parseInt(frequency) };
          break;
        }
        case 'suitLevel': {
          let [min, max] = arr;
          if(isNaN(min) || isNaN(max)) throw new Error('data table format wrong');
          result = { min: parseInt(min), max: parseInt(max) };
          break;
        }
        case 'suitLevelSingle': {
          let [min, max] = arr;
          console.log(min, max)
          if(max) {
            if(isNaN(min) || isNaN(max)) throw new Error('data table format wrong');
            result = { min: parseInt(min), max: parseInt(max) };
            break;
          } else {
            if(isNaN(min)) throw new Error('data table format wrong');
            result = { min: parseInt(min) };
            break;
          }
        }
        case 'attribute': {
          let [id, value] = arr;
          if(isNaN(id) || isNaN(value)) throw new Error('data table format wrong');
          result = { id: parseInt(id), value: parseInt(value) };
          break;
        }
        case 'point': {
          let [x] = arr;
          if(isNaN(x)) throw new Error('data table format wrong');
          result = x;
          break;
        }
        case 'decimalReward': {
          let [gid, count] = arr;
          if(isNaN(gid) || isNaN(count)) throw new Error('data table format wrong');
          result = { gid: parseInt(gid), count: parseFloat(count) };
          break;
        }
        case 'towerTaskCondition': {
          let [type, param, cnt] = arr;
          if(isNaN(type) || isNaN(param)|| isNaN(cnt)) throw new Error('data table format wrong');
          result = { type: parseInt(type), param: parseInt(param), cnt: parseInt(cnt) };
          break;
        }
        case 'possibility': {
          let [id, weight] = arr;
          if(isNaN(id) || isNaN(weight)) throw new Error('data table format wrong');
          result = { id: parseInt(id), weight: parseInt(weight) };
          break;
        }
        case 'cost': {
          let [id, count] = arr;
          if(isNaN(id) || isNaN(count)) throw new Error('data table format wrong');
          result = { id: parseInt(id), count: parseInt(count)};
          break;
        }
      }
      return result;
    };
  }

/**
 * 将 | 分隔的字符串解析为数组，如：a|b|c 解析为[a, b, c]
 * @param str 要解析的字符串
 */
export function decodeArrayStr(str: string, splitForm='|') {
  let last = str.substr(str.length-1, 1);
  if(last == '&') str = str.substr(0, str.length - 1);
  if(str == '') {
    return []
  } else {
    return str.split(splitForm);
  }
}

/**
 * 将 | 和 & 分隔的字符串解析为 Map，，如：a&b|c&d|e&f 解析为 Map {a=>b, c=>d, e=>f}
 * @param str 要解析的字符串
 */
export function decodeIdCntArrayStr(str: string, multi: number) {
  const strArr = decodeArrayStr(str);
  console.log('decodeIdCntArrayStr: ', strArr);
  const strMap = new Map();
  strArr.forEach(item => {
    const kv = item.split('&');
    strMap.set(kv[0], multi? Math.ceil(parseInt(kv[1]) * multi): kv[1]);
  });
  return strMap;
}

  // 计算当前武将战力
  export async function calculateSumCE(roleId: string, type: number, param: { num?: number, heroes?: Array<number> }) {
    let sum;
    if(type == 1) { // 最高num人历史最高战力和
      sum = await HeroModel.sumTopHeroCe(roleId, param.num||0);
    } else if(type == 2) { // 所有人战力和
      sum = await HeroModel.sumHeroCe(roleId);
    }
    return sum;
  }
  // 计算当前武将战力
  export function calculateCE(heroInfo: {hid: number, lv: number }) {
    let { hid, lv } = heroInfo;
    // 假设所有属性和等级的关系是简单的线性关系
    let dicHero = getGamedata('dic_zyz_hero');
    let curDicHero = dicHero.find(cur => cur.heroId == hid);

    let { atk, matk, def, mdef, agi, luk, atk_up, matk_up, def_up, mdef_up, agi_up, luk_up } = curDicHero;
    atk += lv * atk_up;
    matk += lv * matk_up;
    def += lv * def_up;
    mdef += lv * mdef_up;
    agi += lv * agi_up;
    luk += lv * luk_up;

    // 假设战力为所有属性的简单加法

    let ce = atk + matk + def + mdef + agi + luk;
    return ce;
  }

  export function getRandomByLen(arr: Array<number>):number 
  export function getRandomByLen(arr: Array<any>): any {
    let len = arr.length;
    return arr[Math.floor(Math.random() * len)]
  }

  export function getRandomWithWeight(randomList: any) {
    let len = randomList.reduce((pre, cur) => {
        return pre + cur.weight||1;
    }, 0);
    let index = Math.floor(Math.random() * len);
    let result = { dic: null, index: -1 };
    for(let i = 0; i < randomList.length; i++) {
        let {weight = 0} = randomList[i];
        if(index < weight) {
          result.dic = randomList[i]; 
          result.index = i;
          break;
        }
        index -= weight;
    }
    return result
  }
/**
 * 传入两个时间，返回按照时间差计算，第二个时间比第一个晚几天
 * @param preTime 之前的时间
 * @param proTime 之后的时间
 */
export function deltaDays(preTime: Date, proTime: Date): number {
  return moment(proTime).diff(moment(preTime), "days");
}

/**
 * 计算按照每 x 天 y 点刷新一次，是否应该刷新
 * @param preTime 基准时间
 * @param curTime 当前时间
 * @param hour 几点刷新
 * @param deltaDay 间隔几天刷新，默认每天刷新(deltaDay = 1)
 */
export function shouldRefresh(preTime: Date, now: Date, hour: number, deltaDay = 1): boolean {
  if(!preTime) return true;
  let curTime = new Date(now.getTime());
  let refeshTime = setLocalHours(hour, curTime);
  console.log(refeshTime - preTime.getTime(), (deltaDay>=1?deltaDay-1:0) * 24 * 60 * 60 * 1000, curTime.getTime(), refeshTime)
  if (refeshTime - preTime.getTime() > (deltaDay>=1?deltaDay-1:0) * 24 * 60 * 60 * 1000 && curTime.getTime() >= refeshTime) {
    return true;
  }
  return false;
}

/**
 * 获取 x天后的y点
 * @param curTime 现在时间
 * @param hour 几点刷新
 */
export function getRefTime(now = new Date(), hour: number, day = 0) {
  let curTime = new Date(now.getTime());
  let offset = curTime.getTimezoneOffset(); // 时差，单位分
  let checkHour = hour - 8 + offset/60;
  if(checkHour < 0) {
    checkHour = 24 + checkHour;
    if (curTime.getHours() >= checkHour) {
      curTime.setDate(curTime.getDate() + 1);
    }
  } else {
    if (curTime.getHours() < checkHour) {
      curTime.setDate(curTime.getDate() - 1);
    }
  }
  let today = setLocalHours(hour, curTime);
  return new Date(today + day * 24 * 60 * 60 * 1000);
}

/**
 * 从一个数组中随机返回不重复的 cnt 个元素数组
 * @param source 原数组
 * @param cnt 返回随机元素个数
 */
export function getRandEelm(source: Array<any> = [], cnt = 1): Array<any> {
  if (cnt > source.length) return [];
  if (cnt === source.length) return source;
  let idxs = new Set();

  while(1) {
    let rand = Math.floor(Math.random() * source.length);
    idxs.add(rand);
    if (idxs.size == cnt) {
      break;
    }
  }

  return source.filter((_item, idx) => idxs.has(idx));
}

/**
 * 在给定数值的浮动范围中随机一个值
 * @param base 基础数值
 * @param ratio 随机范围：base 值上下浮动 ratio(小于 1 的整数)
 * @param decimal 返回值保留的小数位数
 */
export function getRandValue(base: number, ratio: number, decimal = 2): number {
  return parseFloat((base * (1 - ratio + Math.random() * ratio * 2)).toFixed(decimal));
}

export function resResult(status: {code: number, simStr: string}, data = null, customMsg = '') {
  const { code, simStr } = status;
  if (code !== STATUS.SUCCESS.code) {
    console.log(`normal err, code: ${code}, des: ${customMsg || simStr}`);
  }
  return {code, msg: customMsg || simStr, data};
}

// 消除 js 浮点计算bug

export const cal = {
  add: function(a:number, b:number) {
      var c:number, d:number, e:number;
      try {
          c = a.toString().split(".")[1].length;
      } catch (f) {
          c = 0;
      }
      try {
          d = b.toString().split(".")[1].length;
      } catch (f) {
          d = 0;
      }
      e = Math.pow(10, Math.max(c, d));
      return (this.mul(a, e) + this.mul(b, e)) / e;
  },
  sub: function sub(a:number, b:number) {
      var c:number, d:number, e:number;
      try {
          c = a.toString().split(".")[1].length;
      } catch (f) {
          c = 0;
      }
      try {
          d = b.toString().split(".")[1].length;
      } catch (f) {
          d = 0;
      }
      e = Math.pow(10, Math.max(c, d));
      return (this.mul(a, e) - this.mul(b, e)) / e;
  },
  mul: function mul(a:number, b:number) {
      var c = 0,
          d = a.toString(),
          e = b.toString();
      try {
          c += d.split(".")[1].length;
      } catch (f) {}
      try {
          c += e.split(".")[1].length;
      } catch (f) {}
      return Number(d.replace(".", "")) * Number(e.replace(".", "")) / Math.pow(10, c);
  },
  div: function div(a:number, b:number) {
      var c:number, d:number, e = 0,
          f = 0;
      try {
          e = a.toString().split(".")[1].length;
      } catch (g) {}
      try {
          f = b.toString().split(".")[1].length;
      } catch (g) {}
      c = Number(a.toString().replace(".", ""));
      d = Number(b.toString().replace(".", ""));
      return this.mul(c / d, Math.pow(10, f - e));
  }
};

//计算公式
export function calculateNum(ratio: {A: number, B: number}, params: {num: number}, defaultVal = 0) {
  // result = a * num + b
  try {
    let {A, B} = ratio;
    let {num} = params;
    let result = A * num + B;
    if(isNaN(result)) {
      console.error('calculate wrong: ', A, B, num)
      return defaultVal;
    } else {
      return result;
    }
  }catch(e) {
    console.error(e);
    return defaultVal;
  }
}


export function setLocalHours(hour: number, curTime = new Date()) {
  // curTime: 格林威治时间
  let offset = curTime.getTimezoneOffset(); // 格林威治时间和本地时间之间的时差(分)
  let localTime = new Date(curTime.getTime() + offset * 60 * 1000 + 8 * 60 * 60 * 1000); // 中国时间
  localTime.setUTCHours(hour, 0, 0, 0); // 中国的几点
  return localTime.getTime() - 8 * 60 * 60 * 1000; // 回到格林威治时间
}

export async function updateCe(roleId: string, hero: any ) {
  let {hid, ce: oldCe, historyCe} = hero;
  let actor = new Actor();
  actor.initHero(hero);
  let ce = actor.calculateCE();
  if(ce != oldCe) {
    // 更新总战力&最强五人战力
    await RoleModel.updateSumCe(roleId, hid, ce, oldCe);
    // 更新pvp防守阵容战力
    await PvpDefenseModel.updateCe(roleId, hid, ce, oldCe);
    // 更新武将战力，历史最高战力
    await HeroModel.updateCe(roleId, hid, ce, oldCe, historyCe);
  }
}

export function ratioReward(rewardStr: string, ratio: number): string {
  let rewards = decodeIdCntArrayStr(rewardStr, ratio);
  let res = '';
  for (let [k, v] of rewards) {
    res += `${k}&${v}|`;
  }
  return res.substring(0, res.length - 1);
}

export function getItems(str:string) {
    let arr = new Array<{id: number, count: number}>();
    let strArr = str.split('|');
    for (let item of strArr) {
        var itemArr = item.split('&');
        arr.push({
            id : parseInt(itemArr[0]),
            count : parseInt(itemArr[1])
        });
    }
    return arr;
}