// A bot which responds to `jarvis` with a box

const Space = require('../space');
const Socket = require('../socket');
const tilekeys = require('../utils/tilekeys');
const ms = require('../utils/measurespace');
const vec = require('../utils/vec');
const comb = require('../utils/comb');
const Search = require('../tools/search');
const Queue = require('../tools/queue');
const ri = require('../utils/rectintersect');

var main = new Socket();

function equals(arg1,arg2){ // Just takes the specific case argument of each being an int pair
  return arg1[0] == arg2[0] && arg1[1] == arg2[1]
}

main.on('open', ()=>{ // Tries to identify itself with a cursor movement
  console.log('socket opened');
  let coords = [Math.floor(Math.random()*100000+16),Math.floor(Math.random()*100000+16)];
  main.cursor(coords);
  main.on('cursor',detect);
  function detect(pos, send){
    if (equals(pos[0],coords)){
      main.off('cursor', detect);
      identity(send);
    }
  }
})

var sender; // Global variable that holds identity()'s `send` for tileHandler

function identity(send){
  sender = send;
  console.log('identity activated');
  init();
  main.on('tileUpdate', tileHandler);
}

function init(){
  writes.enqueue(...notif.towrite()); // A non-conservative write because I don't want to write the fetch request (also, faster in many cases because the notif is <200 chars)
}

function tileHandler(send, source, tiles){
  if (send == sender) return;
  let locs = tilekeys(tiles);
  let tilespaces = {};
  for (let i=0; i<locs.length; i++){
    let loc = locs[i];
    tilespaces[loc] = new Space();
    tilespaces[loc].fromfetch(tiles, [loc, loc], conform=false);
  }
  [protectArea, detectPrompt].forEach(func => {
    func(send, tilespaces, locs);
  });
}

var notif = new Space();
notifsrc = '\
                           \n\
  For a node.js YWOT api:                    \n\
&   http://github.com/feynmansfedora/ywot-clean \n\
&   Try `jarvis` today. Uptime: UPTIME          \n\
                                                '
var hrsUp = 0;
function notifRefresh(){
  notif.adhoc(notifsrc.replace('UPTIME', hrsUp + 'hrs'));
  setTimeout(notifRefresh, 3600*1000);
  hrsUp += 1;
}
notifRefresh();
notif.loc = [-6, 20];
var ctrl = ms(notif);

function protectArea(send, tiles, locs){
  let tilesize = [8, 16]; // This may be exportable to an external util/tool
  for (loc of locs){
    let tile = tiles[loc];
    let origloc = loc;
    loc = vec.tileToChar(loc);
    if (ri(ctrl, [loc, vec.add(loc, tilesize)])){
      // Write diffs from the tile
      let inter = notif.copy(); // Acts as a window for tile (only see relevant data)
      inter.comb(tile, comb.unmask);
      let diff = notif.copy(); // Actually diffs notify with the errant text
      diff.comb(inter, comb.sub);
      writes.enqueue(...diff.towrite())
      // Mask the tile
      let newtile = notif.copy();
      newtile.comb(tile, comb.mask);
      tiles[origloc] = newtile;
    }
  }
}

var search = new Space();
search.adhoc('jarvis'); // The search space is the word jarvis, so whenever that's caught, a relevant function can be called.
var read = new Search(search);
var expire = {};

function detectPrompt(send, tiles, locs){ // tries to detect the prompt ('jarvis') and calls respond if found.
  for (let i=0; i<locs.length; i++){
    let loc = locs[i];
    if (read.has(loc)){
      clearTimeout(expire[loc]);
      delete expire[loc];
      read.del(loc);
    }
    let results = read.add(loc, tiles[loc]);
    if (results.length > 0) respond(results);
    expire[loc] = setTimeout(() => {read.del(loc)}, 30000);
  }
}

let response = new Space();
response.adhoc('yes, my liege');

let writes = new Queue(1000, 200, (elems) => main.write(elems));

function respond(coord){
  console.log('called at', coord);
  response.loc = coord;
  writes.enqueue(...response.towrite());
}