import { Service } from 'egg';
import { resResult as pubResult } from '../pubUtils/util';
import { gameData } from 'app/pubUtils/data';
import { RedisClient } from 'redis';
import { REDIS_KEY, SERVER_STATUS } from '@consts';
import { getRedisSubChannel } from 'app/pubUtils/sdkUtil';
import { ServerlistType } from '@db/Serverlist';
import { nowSeconds } from 'app/pubUtils/timeUtil';
import { checkWhiteList } from 'app/pubUtils/sysUtil';
const csprng = require('csprng');
/**
 * Utils Service
 */
export default class Utils extends Service {
  /**
   * 生成 len 长度的随机字符串
   * @param len 长度
   * @param radix 基数
   */
  public generateStr(len: number, radix = 36) {
    return `${csprng(len, radix)}`;
  }

  public 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;
  }

  /**
   * 生成指定长度的随机数
   * @param len 随机数长度
   */
  public generateNum(len: number) {
    let code = '';
    for (let i = 0; i < len; i++) {
      code += parseInt(`${Math.random() * 10}`);
    }
    return code;
  }

  public resResult(status: {code: number, simStr: string}, data?, customMsg?: string) {
    return pubResult(status, data, customMsg);
  }

  public log(level: 'DEBUG'|'INFO'|'WARN'| 'ERROR', message: string) {
    const log = this.app.loggers.get('linkLogger');

    if(level == 'DEBUG') {
      log.debug(`${message}`);
    } else if (level == 'INFO') {
      log.info(`${message}`);
    } else if (level == 'WARN') {
      log.warn(`${message}`);
    } else if (level == "ERROR") {
      log.error(`${message}`);
    }
  }

  public async checkOnlineUser(userCode: string) {
    let redisClient: RedisClient = this.ctx.app.context.redisClient;
    let onlineRoleId = await redisClient.hgetAsync(REDIS_KEY.USER_CODE, userCode);
    let isWhiteList = await checkWhiteList(this.ctx.app.config.realEnv, this.ctx.clientIp, this.ctx.uid);

    if (!isWhiteList && !!onlineRoleId) { // 多地登陆踢下线
      let str = await redisClient.hgetAsync(REDIS_KEY.ONLINE_USERS, onlineRoleId);

      if(str) {
          try {
              let [,sid] = str?.split('|')??[];
              let name = getRedisSubChannel(REDIS_KEY.USER_CHANNEL, this.ctx.app.config.env);
              await redisClient.publishAsync(name, `${sid}|${onlineRoleId}`);
          } catch(e) {
              console.error('checkOnlineUser', e);
          }
      }
    }    
  }

  public async pushPubAccountGiftChannel(activityId: number, userCode: string, channelId: string) {
    let redisClient: RedisClient = this.ctx.app.context.redisClient;

    try {
      let name = getRedisSubChannel(REDIS_KEY.PUBLIC_ACCOUNT_GIFT, this.ctx.app.config.env);
      await redisClient.publishAsync(name, `${activityId}|${userCode}|${channelId}`);
    } catch(e) {
        console.error('pushPubAccountGiftChannel', e);
    }
  }

  public async pushGiftCodeChannel(roleId: string, giftCode: string) {
    let redisClient: RedisClient = this.ctx.app.context.redisClient;

    try {
      let name = getRedisSubChannel(REDIS_KEY.SEND_GIFT_CODE, this.ctx.app.config.env);
      await redisClient.publishAsync(name, `${roleId}|${giftCode}`);
    } catch(e) {
        console.error('pushPubAccountGiftChannel', e);
    }
  }

  // 检测是否可以登录
  public async validateCanLogin() {
    try {
      if(gameData.serverConst.CLOSE_LOGIN == 1) return false;
      if(gameData.serverConst.CLOSE_LOGIN_WHEN_ONLINE_MAX) {

        let redisClient: RedisClient = this.ctx.app.context.redisClient;
        let count = await redisClient.hlenAsync(REDIS_KEY.ONLINE_USERS);
        const Max = await redisClient.getAsync(REDIS_KEY.MAX_ONLINE_USERS);

        console.log('validateCanLogin:', count, Max);
        if(Max && count >= parseInt(Max)) {
          console.log('validateCanLogin false:', count, Max);
          return false
        }
      }
      return true;
    } catch(e) {
      console.error('validateCanLogin', e);
      return true;
    }
  }

  // 比较以 . 分隔的版本号。返回 0 则版本号相等，返回正数则 versionA 大，返回负数则 versionB 大
  public compareVersion (versionA: string, versionB: string) {
    var vA = versionA.split('.');
    var vB = versionB.split('.');
    for (var i = 0; i < vA.length; ++i) {
        var a = parseInt(vA[i]);
        var b = parseInt(vB[i] || '0');
        if (a === b) {

        } else {
            return a - b;
        }
    }
    if (vB.length > vA.length) {
        return -1;
    } else {
        return 0;
    }
  };

  public getServerStatus(server: ServerlistType, version: string, hasRole: boolean) {
    let now = nowSeconds();
    if (now < server.openTime) {
      return SERVER_STATUS.WILL_OPEN;
    } else if (server.maintenance && server.maintenance.isOpen && server.maintenance.startTime < now && server.maintenance.endTime > now) {
      const versionFlag = this.ctx.service.utils.compareVersion(version, server.maintenance.version||'0.0.0');
      if(versionFlag >= 0) { // 新版本号
          if(!hasRole && server.id == server.latestServerUniqId) { // 新玩家
              return server.serverStatus;
          } else {
              return SERVER_STATUS.MAINTENANCE;
          }
      } else {
          return SERVER_STATUS.MAINTENANCE;
      }
    } else {
      return server.serverStatus; // 未开服
    }
  }
}