/*
 * @Author: Copyright(c) 2020 Suwings
 * @Date: 2020-10-08 13:28:28
 * @LastEditTime: 2021-02-12 12:20:18
 * @Description: 
 */
const ServerManager = require("../core/Process/ServerCenter");
const fs = require("fs");
const fsextra = require("fs-extra");
const pathm = require("path");

// 事实上，Node.js 的缓存机制可以间接的到达单列模式的目的
var onlyServerManager = new ServerManager();
// module.exports.ServerManager = onlyServerManager;
function getServerDir(serverName) {
  return "./server/server_core/" + serverName + "/";
}

module.exports.getServerDir = getServerDir;

module.exports.ServerManager = () => {
  return onlyServerManager;
};

//后来维护添加的 优先创建根目录
module.exports.createServerDir = (serverName, cwd) => {
  if (cwd == "" || cwd == "<默认标准位置>") cwd = getServerDir(serverName);
  if (!fs.existsSync(cwd)) {
    fsextra.mkdirsSync(cwd);
  }
};

module.exports.createServer = (serverName, config) => {
  if (config.cwd == "" || config.cwd == "<默认标准位置>") config.cwd = getServerDir(serverName);
  if (!fs.existsSync(config.cwd)) {
    fsextra.mkdirsSync(config.cwd);
  }
  // 关于 EULA 同意功能，在使用面板时就必须表示接受 Minecraft 相关的 EULA 与其他协议。
  const eulaPath = pathm.join(config.cwd, "eula.txt");
  if (!fs.existsSync(eulaPath)) {
    fsextra.writeFileSync(eulaPath, "eula=true");
  }
  onlyServerManager.newMinecraftServer(serverName);
  onlyServerManager.builderMinecraftServer(serverName, config);
  onlyServerManager.saveMinecraftServer(serverName);
  return true;
};

module.exports.deleteServer = (serverName) => {
  return onlyServerManager.delMinecraftServer(serverName);
};

module.exports.startServer = (serverName) => {
  if (onlyServerManager.isExist(serverName)) {
    return onlyServerManager.startMinecraftServer(serverName);
  }
  return false;
};

module.exports.stopServer = (serverName) => {
  if (onlyServerManager.isExist(serverName)) {
    return onlyServerManager.stopMinecraftServer(serverName);
  }
  return false;
};

module.exports.restartServer = (serverName) => {
  if (onlyServerManager.isExist(serverName)) {
    return onlyServerManager.restartServer(serverName);
  }
  return false;
};

module.exports.sendCommand = (serverName, command) => {
  if (onlyServerManager.isExist(serverName)) {
    return onlyServerManager.sendMinecraftServer(serverName, command);
  }
  return false;
};

module.exports.builder = (serverName, config) => {
  onlyServerManager.builderMinecraftServer(serverName, config);
  onlyServerManager.saveMinecraftServer(serverName);
};

//服务端中心 用于判断所有运行服务端是否到期 | 每2个小时检查一次
//https://www.npmjs.com/package/node-schedule
const schedule = require("node-schedule");
schedule.scheduleJob("1 0 */2 * * *", function () {
  let serverCollect = onlyServerManager.getServerObjects();
  try {
    for (let k in serverCollect) {
      let server = serverCollect[k];
      if (server && server.isRun()) {
        let res = server.isDealLineDate();
        if (res) {
          MCSERVER.log("[时间期限] 服务端 [", server.dataModel.name, "]", "于现在过期，正在执行关闭程序.");
          //先进行标准流程关闭服务端，如果 45 秒后未关闭，则强制性结束进程
          server.stopServer();
          setTimeout(() => {
            server.kill();
          }, 45 * 1000);
        }
      }
    }
  } catch (err) {
    MCSERVER.error("[时间期限] 关闭服务端时出现异常，某个服务端可能未能正确关闭:", err);
  }
});