const _ = require('lodash');

exports.defaultName = "Art-Net";
exports.connectionType = 'UDPsocket';
exports.heartbeatInterval = 10000;

exports.searchOptions = {
  type: 'UDPsocket',
  searchBuffer: Buffer.from([0x00]),
  devicePort: 6454,
  listenPort: 6454,
  validateResponse (msg, info, devices) {
    return msg.toString('utf8', 0, 7) === "Art-Net";
  }
};

exports.defaultPort = 6454;

exports.ready = function ready(_device) {
  const device = _device;
  device.data.universes = {};
  device.data.orderedUniverses = [];
};

exports.data = function data(_device, buf) {
  if(buf.length < 18){
    return
  }
  const universeIndex = buf.readUInt8(14);
  const device = _device;
  let universe = device.data.universes[universeIndex];

  if(!universe){
    device.data.universes[universeIndex] = {};
    universe = device.data.universes[universeIndex];
  }

  universe.sequence = buf.readUInt8(12);
  universe.subnet = buf.readUInt8(15);
  universe.opCode = buf.readUInt8(9);
  universe.version = buf.readUInt16BE(10);
  universe.slots = buf.slice(18)
  device.data.ip = device.addresses[0];

  if(!_.includes(device.data.orderedUniverses, universeIndex)){
    device.data.orderedUniverses.push(universeIndex);
    device.data.orderedUniverses.sort();
    universe.slotElems = [];
    universe.slotElemsSet = false;

    device.draw();
    device.update('elementCache');
  }

  device.update("universeData", {
    universeIndex,
    universe
  });
};

exports.heartbeat = function heartbeat(device) {
  
};

let lastUpdate = Date.now();
exports.update = function update(_device, _document, updateType, updateData){
  const device = _device
  const data = updateData;
  const document = _document;

  if(updateType === "universeData" && data.universe){

    if(Date.now() - lastUpdate > 1000){
      lastUpdate = Date.now();
      device.update("elementCache");
    }

    const $elem = document.getElementById(`universe-${data.universeIndex}`);

    if($elem && data.universe.slotElemsSet){
      for(let i = 0; i < 512; i++){
        data.universe.slotElems[i].innerText = data.universe.slots[i];
      }

      document.getElementById(`universe-${data.universeIndex}-sequence`).innerText = data.universe.sequence;
    }else{
      device.draw();
      device.update("elementCache");
    }

  }else if(updateType === "elementCache"){
    device.data.orderedUniverses.forEach(universeIndex => { 
      for(let i = 0; i < 512; i++){
        device.data.universes[universeIndex].slotElems[i] = document.getElementById(`${universeIndex}-${i}`);
      }
      device.data.universes[universeIndex].slotElemsSet = true;
    });
  }
}