var XMLHttpRequest = require("xmlhttprequest").XMLHttpRequest;
exports.run = async (client, message, args, level) => {
let argu = ""
    for(var i = 0; i < args.length; i++){
        if(i == args.length-1) argu += args[i];
        else if(args[i] === ", ") argu += args[i];
        else argu += args[i] + " ";
    }

    let systems = argu.split(", ")
  if(!systems[0] || !systems[1]){
    message.channel.send({embed: {
  color: 0xff6600,
  description: "Incorrect Syntax. Use ``!helpme dist`` for correct usage."}});
    return;
  }
  const msg = await message.channel.send({embed: {
  color: 0xff6600,
  description: "Stand by, CMDR"}});

  function httpGet(theUrl)
{
    var xmlHttp = new XMLHttpRequest();
    xmlHttp.open( "GET", theUrl, false ); // false for synchronous request
    xmlHttp.send( null );
    return xmlHttp.responseText;
}
msg.edit({embed: {
  color: 0xff6600,
  description: "Looking at a really big map"}});

  function download(system){
    let systemLink = system.replace('+','%2B').replace(' ', '+');
    let uri = `https://www.edsm.net/api-v1/system?sysname=${systemLink}&coords=1`;
    if(httpGet(uri).length <= 2 && systems[0] == system){
      msg.edit({embed: {
  color: 0xff6600,
  description: "No information for" `${systems['0']}`}});
    }

    if(httpGet(uri).length <= 2 && systems[1] == system){
      msg.edit({embed: {
  color: 0xff6600,
  description: "No information for" `${systems['1']}`}});
      //("No information for ``" + systems[1] + "``");
    }
    return JSON.parse(httpGet(uri));
  }
   msg.edit({embed: {
  color: 0xff6600,
  description: "Doing a bunch of math"}});

  var sys1 = download(systems[0]);
  var sys2 = download(systems[1]);

  var distance = Math.sqrt(Math.pow((sys2["coords"]["x"] - sys1["coords"]["x"]), 2)
                          + Math.pow((sys2["coords"]["y"] - sys1["coords"]["y"]), 2)
                          + Math.pow((sys2["coords"]["z"] - sys1["coords"]["z"]), 2)).toFixed(2);

  msg.edit({embed: {
    color: 0xff6600,
    title: "Distance",
    fields: [{
        name: "System 1",
        value: `${systems['0']}`
      },
      {
        name: "System 2",
        value: `${systems['1']}`
      },
      {
        name: "Distance",
        value: `${distance} ly`
      }],
    }
  }
);
};


exports.conf = {
  enabled: true,
  guildOnly: true,
  aliases: [],
  permLevel: "User"
};

exports.help = {
  name: "dist",
  category: "Custom Commands",
  description: "Gives the Distance between two systems in the EDSM database.",
  usage: "dist <system1>, <system2>"
};