Combine Micello data API GeoJSON to flat GeoJSON what Carto.com likes

micello_to_carto.php

<?php

/* Parser for micello indoor geojson
*  - https://www.micello.com/documentation/data
*/


//for debug
#error_reporting(E_ALL & ~E_NOTICE);
#ini_set('display_errors', 1);


//main class
class building {
  $key = 'YOUR_KEY';
  //object url pattern
  public $object_url_pattern = 'https://mfs.micello.com/ms/v1/mfile/map/__objId__/mv/-/ev/-/geojson/com-map?key='.$key;
  
  //entities url pattern
  public $entities_url_pattern = 'http://mfs.micello.com/ms/v1/mfile/map/__objId__/mv/-/ev/-/geojson/com-entity?key='.$key;
  
  //level url pattern
  public $level_url_pattern = 'https://mfs.micello.com/ms/v1/mfile/map/__objId__/mv/-/ev/-/geojson/geojson-level-geom/__levelId__?key='.$key;
  
  //object id (from REQUEST[bid])
  public $obj_id;
  
  //obj_url (ex: https://mfs.micello.com/ms/v1/mfile/map/78/mv/-/ev/-/geojson/com-map?key=)
  public $obj_url;
  
  //levels info (id, zlevel, level_no, etc.)
  public $level_ids;
   
  //obj_data (array)
  public $obj_data;
  
  //entities_data (array)
  public $entities_data;
  
  //final_data (levels array)
  public $levels_data;
  
  
  function __construct($bid) {
    $this->obj_id = $bid;
    $this->obj_url = str_replace('__objId__', $bid, $this->object_url_pattern);
  }

  //create object data array from json
  public function get_object_data() {
    if (isset($this->obj_url)) {
      $this->obj_data = @json_decode(file_get_contents($this->obj_url), TRUE);
    }
  }
 
  //create level info data array
  public function get_levels() {
    if (is_array($this->obj_data)) {
      foreach ($this->obj_data['drawings'] as $per) {
        foreach ($per['levels'] as $level) {
          $level['drawing_id'] = $per['id'];
          $this->level_ids[] = $level;
        }
      }
    }
  }
  
  //create entities data array from json
  public function get_entities_data() {
    if (isset($this->obj_url)) {
      if ($e_json = json_decode(file_get_contents(str_replace('__objId__', $this->obj_id, $this->entities_url_pattern)), TRUE)) {
        foreach ($e_json['entities'] as $per) {
          $this->entities_data[$per['id']] = $per['properties'];
        } 
      }
    }
  }
  
  //get level (current level_id) features
  private function get_level_data($level_id) {
    $url = str_replace('__levelId__', $level_id, str_replace('__objId__', $this->obj_id, $this->level_url_pattern));
    $level_data = json_decode(file_get_contents($url), TRUE);
    if (is_array($level_data))
      return $level_data;
  }
  
  //create level features data array (for all levels) - final array
  public function get_levels_data() {
    if (is_array($this->level_ids)) {
      foreach ($this->level_ids as $per) {
        $ld = $this->get_level_data($per['id']);
        if (is_array($ld['features'])) {
          unset($cartojson_polygons);         
          foreach ($ld['features'] as $element) {
            unset($polygons, $label, $deg);
            
            $polygons['type'] = $element['type'];
            $polygons['geometry'] = $element['geometry'];
            $polygons['properties'] = $element['properties'];
            
            if (is_array($polygons['properties']['entities']) && is_array($this->entities_data[$polygons['properties']['entities'][0]])) {
              foreach ($this->entities_data[$polygons['properties']['entities'][0]] as $key => $val) {
                if ($key == 'tags')
                  $polygons['properties'][$key] = $val[0];
                
                //no need geometry key
                elseif ($key != 'geometry')
                  $polygons['properties'][$key] = $val;
              }
            }
            
            $polygons['properties']['object_id'] = $this->obj_id;
            $polygons['properties']['drawing_id'] = $per['drawing_id'];
            $polygons['properties']['level_id'] = $per['id'];
            $polygons['properties']['zlevel'] = $per['properties']['zlevel'];
            $polygons['properties']['level_main'] = $per['properties']['main'];
            $polygons['properties']['level_name'] = $per['properties']['name'];
            
            
            if ($label_area = $element['label_area']) {
              $location = $element['location'];
              $deg = rad2deg($label_area[4]);
              #$labels['properties']['angle'] = (($deg<0)?(abs($deg)):(180-$deg));
              #$labels['properties']['angle'] = (($deg<90)?(0-$deg):(180-$deg));
              $polygons['properties']['angle'] = (($deg<90 && $deg>=0)?(0-$deg):(180-$deg));
            }     
            $cartojson_polygons['features'][] = $polygons;
          }
        }        
        $data1[] = $cartojson_polygons;
      }
    }
    for ($i=0; $i<count($data1); $i++) {
      foreach ($data1[$i]['features'] as $per) {
        $this->levels_data['features'][] = $per;
      }
    }
    $this->levels_data['type'] = 'FeatureCollection';
  }
}

//

if (!$_REQUEST['bid']) {
  header('HTTP/1.0 404 Object id parameter missing', true, 404);
  die('Object id parameter missing!');
}
else {
  $b1 = new building((int)$_REQUEST['bid']);
  $b1->get_object_data();
}

//

if (!is_array($b1->obj_data)) {
  header('HTTP/1.0 404 Could not found data', true, 404);
  die('Could not found data!');
}
else {
  $b1->get_entities_data();
  $b1->get_levels();
  $b1->get_levels_data();
  if (is_array($b1->levels_data)) {
    header("Content-type: application/json; charset=utf-8");
    echo json_encode($b1->levels_data);
    exit();
  }
  else {
    header('HTTP/1.0 404 Empty property', true, 404);
    die('empty property!');
  }
}

?>