var Timer ChromeCastOffTimer = null

rule "Door Status"
when
    Item entrance_door_status changed
then
    val state = entrance_door_status.state.toString

    // the sensor state is inverted:
    //   OFF means opened
    //   ON  means opened
    if (state == 'OFF') {
        logInfo('door', 'opened')
        entrance_ceiling_lamps.sendCommand("ON")
        chill_zone_lamps.sendCommand("ON")
        engineering_table_lamps.sendCommand("ON")
        engineering_ceiling_lamps.sendCommand("ON")
        engineering_status_lamp.sendCommand("ON")
        area42_status_lamp.sendCommand("ON")
    } else {
        logInfo('door', 'closed')
        // turn the beamer off
        sendHttpGetRequest("http://10.2.113.7/tgi/return.tgi?command=2a3102fd0660")
        chill_zone_screen_button_up.sendCommand("ON")
        entrance_ceiling_lamps.sendCommand("OFF")
        chill_zone_lamps.sendCommand("OFF")
        engineering_table_lamps.sendCommand("OFF")
        engineering_ceiling_lamps.sendCommand("OFF")
        engineering_status_lamp.sendCommand("OFF")
        area42_status_lamp.sendCommand("OFF")
        lab_soldering_table.sendCommand("OFF")
    }
    
    
    logInfo("door", "Space state: {}", state)
end

// ----------------------------------------------------------------------------

rule "Poll People Counter"
when
    //        sec min hour day month weekday year(opt)
    Time cron "*/2 * * ? * *"
then
    val response = sendHttpGetRequest("http://10.2.113.8/output.cgi")
    val count = java.lang.Integer.parseInt(
        transform("XPATH", "/table/tr[4]/td[2]/text()", response).trim()
    )
    if ( count != Integer.parseInt(entrance_people_counter.previousState().state.toString)) {
        entrance_people_counter.postUpdate(count)
    }
end

// ----------------------------------------------------------------------------

rule "Tweet People Count"
when
    Item entrance_people_counter changed
then
//   sendTweet('There are currently ' + entrance_people_counter.state.toString + ' hackers present. Just pass by!')
end

// ----------------------------------------------------------------------------

rule "Phone Ringing"
when
    Time cron "*/2 * * ? * *"
then
    // we could also fetch the XML but fetching the HTML seems to be faster
    // http://10.2.113.137/admin/spacfg.xml
    val phoneResponse = sendHttpGetRequest("http://10.2.113.137")
    val isRinging = "Ringing" == (transform("REGEX", ".*(Ringing).*", phoneResponse))
    if (isRinging) {
        engineering_ceiling_phone_flash.sendCommand("ON")
    }
end

// ----------------------------------------------------------------------------

rule "Beamer Power"
when
    Item chill_zone_beamer received command
then
    val state = chill_zone_beamer.state.toString
    var beamerResponse

    if (state == 'ON') {
        // turn the beamer on
        beamerResponse = sendHttpGetRequest("http://10.2.113.7/tgi/return.tgi?command=2a3101fe0660") 
    } else {
        // turn the beamer off
        beamerResponse = sendHttpGetRequest("http://10.2.113.7/tgi/return.tgi?command=2a3102fd0660")
    }
    val beamerStatus = transform("XPATH", "/return/text()", beamerResponse).replace("\n", '')
    logInfo("beamer", "Beamer state: {}", beamerStatus)
end

// ----------------------------------------------------------------------------


rule "Chromecast changed"
when
    Item chill_zone_chromecast_status changed
then
    val l2state = entrance_door_status.state.toString
    if (l2state == 'ON') {
  	  // do nothing if Level2 is closed

    } else {
    
      val app = chill_zone_chromecast_status.state.toString
      if (app === null || app == UNDEF || app == 'UNDEF' || app == '' || app == 'BackDrop' ) {
        // set input to DVI - hackerspace video
        logInfo('beamer', 'start 2min delay before switch input to DVI')
//        ChromeCastOffTimer.cancel()  // stop any timer running 
        ChromeCastOffTimer=createTimer(now.plusSeconds(30)) [
          app = chill_zone_chromecast_status.state.toString
          if (app === null || app == UNDEF || app == 'UNDEF' || app == '' || app == 'BackDrop' ) {
            sendHttpGetRequest("http://10.2.113.7/tgi/return.tgi?command=2a3109f6070566")
            logInfo('beamer', 'Switch to input DVI (after 2min)')
          } else {
            logInfo('beamer', 'after 2min, chromecast again streaming. Not switching off.')
          }
        ]
      } else {
        if (ChromeCastOffTimer !== null) {
            logInfo('chromecast', 'disabling off timer')
            ChromeCastOffTimer.cancel()  // stop any timer running 
        } else {
            logInfo('chromecast', 'no off time running')
        }
        // only switch beamer on if chromecast is actually showing something
        logInfo('chromecast', 'is streaming from '+app)
        chill_zone_beamer.sendCommand("ON")
        chill_zone_screen_button_down.sendCommand("ON")
        // set input to HDMI2 - chromecast
        sendHttpGetRequest("http://10.2.113.7/tgi/return.tgi?command=2a3109f6071576")
        val state = chill_zone_beamer.state.toString
        logInfo('beamer', 'Switch from {} to input HDMI2',state)
      }
    }
end