///////////////
// Shortcuts //
///////////////

const ws = workspace;

function NumberOfDesktops() { return ws.desktops; }
function NumberOfScreens() { return ws.numScreens; }
const numDesk = NumberOfDesktops();
const numScr = NumberOfScreens();

function CurrentActivity() { return ws.currentActivity; }
function CurrentDesk() { return ws.currentDesktop; }
function CurrentScreen() { return ws.activeScreen; }
const curAct = CurrentActivity();
const curDesk = CurrentDesk();
const curScr = CurrentScreen();

var qt = [];

var gap = 8;

for (var d = 1; d <= numDesk; d++) {
  qt[d] = [];
  for (var s = 0; s < numScr; s++) {
    qt[d][s] = new Screen(ws.clientArea(0, s, 0));
  }
}

function CurrentClients() { return qt[curDesk][curScr].clients; }
const curClients = CurrentClients();

/////////////
// Signals //
/////////////

function connectWorkspace() {
  ws.clientAdded.connect(addClient);
  ws.clientRemoved.connect(removeClient);
}

function addClient(client) {
  if(curClients.length > 3) return;

  client.oldgeo = client.geometry;
  qt[client.desktop][client.screen].push(client);

  tileClients();
}

function removeClient(client) {
  client.geometry = client.oldgeo;

  curClients.splice(curClients.indexOf(client), 1)

  tileClients();
}

function tileClients() {
  for (var s = 0; s < numScr; s++) {
    var tiles = qt[curDesk][s].tiles();
    for (var c = 0; c < qt[curDesk][s].length; c++) {
      qt[curDesk][s].clients[c].geometry = tiles[c];
    }
  }
}

/////////////
// Objects //
/////////////

function Screen(geometry) {
  this.geometry = geometry;
  this.orientation = (geometry.width > geometry.height) ? "horizontal" : "vertical";
  this.pane = { y: geometry.height / 2, x: geometry.width / 2 };
  this.clients = [];
  this.tiles = function() {
    var tiles = [ this.geometry, this.geometry, this.geometry, this.geometry ];
    tiles[0].x = this.geometry.x;
    tiles[0].y = this.geometry.y;
    tiles[0].width = this.pane.x;
    tiles[0].height = this.pane.y;

    tiles[1].x = this.geometry.x + this.pane.x;
    tiles[1].y = this.geometry.y;
    tiles[1].width = this.geometry.width - this.pane.x;
    tiles[1].height = this.pane.y;

    tiles[2].x = this.geometry.x + this.pane.x;
    tiles[2].y = this.geometry.y + this.pane.y;
    tiles[2].width = this.geometry.width - this.pane.x;
    tiles[2].height = this.geometry.height - this.pane.y;

    tiles[3].x = this.geometry.x;
    tiles[3].y = this.geometry.y + this.pane.y;
    tiles[3].width = this.pane.x;
    tiles[3].height = this.geometry.height - this.pane.y;
    return tiles;
  }
}

//////////
// Init //
//////////

function main() {
  connectWorkspace();
}

main();