<?php
/**
 * \file scripts\other\vitelec.php
 * \brief Vitelec SenseConnect (CRT-M) device
 * \author Jack Weeland, Core|Vision B.V.
 * \version $Revision: 26247 $
 * \date $Date: 2016-02-29 10:40:22 +0100 (Mon, 29 Feb 2016) $
 */

header("Content-type: application/json");

vitelec_run();

function vitelec_run()
{
  // Get JSON object from the POSTed data; Vitelec's input does not conform
  //  to the RFC's so we must get the raw post data
  $json_str = file_get_contents("php://input");
  $json     = json_parse($json_str);
  // sanity check
  if( !$json ) return vitelec_error("No data");

  // Locate the gateway in the database
  $gateway = json_get_object($json, "gateway");
  if( !($db_gateway = db_fetch_imei(json_get_object($gateway, "uid"), NULL)) ) {
    return vitelec_error("Invalid device ID: " . json_get_object($gateway, "uid"));
  }
  else $db_gateway = $db_gateway[0];
  
  // build status string
  $status = array(
    "changes"         => STATUPDATE_ANY,
    "mcu_state"       => 0x0000,                // batteries are undefined
    "mcu_local_state" => MCULOC_INIT_DONE,      //
    "mcu_persistent" => 0xBB00,                 // batteries, 3.6V LiIon
    "t" => json_get_object($gateway, "date_time")
  );
  // Get fixed GPS position
  $gps = db_fetch_cache($db_gateway['id'], "gps");
  if( $gps ) {
    $status['gps_mode'] = 'init';
    $status['speed']    = 0.0;
    $status = array_merge($status, $gps);
  }

  // Update time stamp in "log_realtime"
  db_store_log_rt($db_gateway['id'], $status);
  
  // Handle the sensors (if any)
  $sensors = json_get_object($json, "sensors");
  if( $sensors ) {
    foreach( $sensors as $sensor ) {
      // Get sensor from the database
      if( !($db_sensor = db_fetch_imei(json_get_object($sensor, "address"), NULL)) ) {
        return vitelec_error("Unknown sensor, address " . json_get_object($sensor, "address"));
      }
      $db_sensor = $db_sensor[0];
      $device = db_fetch_system_devices(NULL, $db_sensor['device']);
      $db_sensor['threshold_t_ext1'] = $device[0]['threshold_t_ext1'];
      $db_sensor['threshold_t_ext2'] = $device[0]['threshold_t_ext2'];

      // global information about the sensor
      $batt_lvl = json_get_object($sensor, "battery_level");
      
      foreach( json_get_object($sensor, "messages") as $message ) {
        $t = json_get_object($message, "date");
        $status = array(
          "changes"         => STATUPDATE_ANY,
          "mcu_state"       => 0x7000,          // battery #2 not supported
          "mcu_local_state" => MCULOC_INIT_DONE,//
          "mcu_persistent"  => 0xBB00,          // batteries, 3.6V LiIon
          "wcpu_state"      => 0,               //
          "t"               => $t,              //
		  "gsm_rssi"        => json_get_object($message, "message_rssi"),
		  "gsm_berr"        => 0
        );
        // Get fixed GPS position
        $gps = db_fetch_cache($db_sensor['id'], "gps");
        if( $gps ) {
          $status['gps_mode'] = 'init';
          $status['speed']    = 0.0;
          $status = array_merge($status, $gps);
        }
        // battery level
        $status['batt_sel'] = 0;
        $status['batt1_niveau'] = $batt_lvl / 1000.0;
        if( $batt_lvl < 3200 ) $status['mcu_state'] |= MCUSTAT_BATTERY1_LOW;
        if( $batt_lvl < 3000 ) $stauts['mcu_state'] |= MCUSTAT_BATTERY1_CRITICAL;
        
        $sensor_data = json_get_object($message, "data");
        foreach( $sensor_data as $key => $item ) {
          switch( $key ) {
            case "0":
              $T = json_get_object($item, "value") / 10.0;
              $status["temp_onboard"] = $T;
              $major = MAJ_TEMP;
              $minor = MIN_TEMP_ONBOARD;
              if( $T >= $db_sensor['threshold_t_ext2'] ) $status['wcpu_state'] |= WCPUERR_TEMP_EXT2;
              break;
            case "1":
              $T = json_get_object($item, "value") / 10.0;
              $status["temp_ntc"] = $T;
              $major = MAJ_TEMP;
              $minor = MIN_TEMP_EXT1;
              if( $T >= $db_sensor['threshold_t_ext1'] ) $status['wcpu_state'] |= WCPUERR_TEMP_EXT1;
              break;
            default:
              // not supported
              continue;
          }
          // Add to "log_zkl"
          db_store_log_zkl($db_sensor['id'], array(0,0), $t, $major, $minor, $T);
        }
        // Add to "log_realtime"
        db_store_log_rt($db_sensor['id'], $status);
        db_store_cache($db_sensor['id'], "status", $status);
      }
    }
  }

  // Success
  return vitelec_success();
}

function vitelec_success()
{
  echo "{\n";
  echo "  \"Result\": {\n";
  echo "    \"Status\": \"OK\"\n";
  echo "  }\n";
  echo "}\n";

  return TRUE;
}

function vitelec_error($msg)
{
  echo "{\n";
  echo "  \"Result\": {\n";
  echo "    \"Status\": \"ERROR\",\n";
  echo "    \"Message\": \"" . $msg . "\"\n";
  echo "  }\n";
  echo "}\n";
  DBG("Vitelec SenseConnect: ERROR: " . $msg);

  return FALSE;
}

?>