'use strict';

const ping = require('../ping');
const debug = require('debug')('minecraft-protocol');
const states = require('../states');
const assert = require('assert');
const minecraft_data = require('minecraft-data');

module.exports = function(client, options) {
  client.wait_connect = true; // don't let src/client/setProtocol proceed on socket 'connect' until 'connect_allowed'
  debug('pinging',options.host);
  // TODO: use 0xfe ping instead for better compatibility/performance? https://github.com/deathcap/node-minecraft-ping
  ping(options, function(err, response) {
    client.emit('error',err);
    debug('ping response',response);
    // TODO: could also use ping pre-connect to save description, type, max players, etc.
    const motd = response.description;
    debug('Server description:',motd); // TODO: save

    // Pass server-reported version to protocol handler
    // The version string is interpreted by https://github.com/PrismarineJS/node-minecraft-data
    const brandedMinecraftVersion = response.version.name;        // 1.8.9, 1.7.10
    const protocolVersion = response.version.protocol;//    47,      5
    let versions = [brandedMinecraftVersion]
    .concat(brandedMinecraftVersion.match(/((\d+\.)+\d+)/g)||[])
    .map(function (version) {
      return minecraft_data.versionsByMinecraftVersion["pc"][version]
    })
    .filter(function (info) { return info })
    .sort(function (a, b) { return b.version - a.version })
    .concat(minecraft_data.postNettyVersionsByProtocolVersion["pc"][protocolVersion]||[])
    if (versions.length === 0) {
      client.emit('error',`unsupported/unknown protocol version: ${protocolVersion}, update minecraft-data`);
    }
    const minecraftVersion = versions[0].minecraftVersion;

    debug(`Server version: ${minecraftVersion}, protocol: ${protocolVersion}`);

    options.version = minecraftVersion;
    options.protocolVersion = protocolVersion;

    // Reinitialize client object with new version TODO: move out of its constructor?
    client.version = minecraftVersion;
    client.state = states.HANDSHAKING;

    // Let other plugins such as Forge/FML (modinfo) respond to the ping response
    if (client.autoVersionHooks) {
      client.autoVersionHooks.forEach((hook) => {
        hook(response, client, options);
      });
    }

    // Finished configuring client object, let connection proceed
    client.emit('connect_allowed');
    client.wait_connect = false;
  });
  return client;
};