var Conf        = require('./config.json')
,   Helper      = require('../Adawim/helper')
,   Log         = require('../Adawim/logging')
,   WebSocket   = require('ws')
,   GM = require('gm');                  // FIXME: maybe use node-gd instead


const WIDTH = Conf.display.dimension.width;
const HEIGHT = Conf.display.dimension.height;
const wsURL = 'ws://'+Conf.hobu.host+':'+Conf.hobu.port;
var ws = null;
var oled = null;

exports.init = function(oled_) {
  oled = oled_
  
  ws = new WebSocket(wsURL, {
    perMessageDeflate: false
  })
  
  ws.on('open', function open() {
    ws.send('{type:"version"}')
    ws.send('{type:"check_global"}')
  })
  
  ws.on('message', function incoming(data) {
    if(Log.isTrace()) { Log.inspect('Incoming data', data) }
    
    handleIncomeingData(JSON.parse(data))
  })
}

function handleIncomeingData(data_) {
  const type = data_.data.type
  const data = data_.data.data
  
  switch(type) {
    case 'version':
      Log.debug('HoBu Version: ' + data.value)
      break
    case 'check_global':
      handleGlobalCheck(data)
      break
  }
}

function handleGlobalCheck(data) {
  const isOK = data.result
  const foundGarageEntry = filterGarageEntry(data).length > 0

  if(foundGarageEntry) {
    oled.clearDisplay()
    oled.writeLine(0, 0, 'Garagentor offen!')
  } else {
    oled.clearDisplay()
    oled.writeLine(0, 0, 'Garagentor geschlossen!')
  }
}

function filterGarageEntry(data) {
  const keyword = Conf.keywords.garage
  if(Helper.isDefinedAndNotNull(data.whatswrong)) {
    return data.whatswrong.filter(function(entry) { return entry.msgOnErr.indexOf(keyword) >= 0 })
  } else {
    return [];
  }
}