/**
* Convert an array of features in GeoJSON format.
*
* @param array $features The array of features to convert.
* @param stdClass $context The context object.
* @param int $treasurehuntid The identifier of the treasure hunt instance.
* @param int $groupid The identifier of the group or 0 if is individually.
* @return array
*/
function treasurehunt_features_to_geojson($features, $context, $treasurehuntid, $groupid = 0)
{
$featuresarray = array();
foreach ($features as $feature) {
$geometry = treasurehunt_wkt_to_object($feature->geometry);
if (isset($feature->cluetext)) {
$cluetext = file_rewrite_pluginfile_urls($feature->cluetext, 'pluginfile.php', $context->id, 'mod_treasurehunt', 'cluetext', $feature->stageid ? $feature->stageid : $feature->id);
} else {
$cluetext = null;
}
$attr = array('roadid' => intval($feature->roadid), 'stageposition' => intval($feature->position), 'name' => $feature->name, 'treasurehuntid' => $treasurehuntid, 'clue' => $cluetext);
if (property_exists($feature, 'geometrysolved') && property_exists($feature, 'success')) {
$attr['geometrysolved'] = intval($feature->geometrysolved);
// The type of attempt is modified to location for the next function.
$feature->type = "location";
$attr['info'] = treasurehunt_set_string_attempt($feature, $groupid);
}
$feature = new Feature($feature->id ? intval($feature->id) : 0, $geometry, $attr);
array_push($featuresarray, $feature);
}
$featurecollection = new FeatureCollection($featuresarray);
$geojson = $featurecollection->getGeoInterface();
return $geojson;
}
