src/Services/FHIR/FhirMedicationService.php

   1 <?php
   2
   3 namespace OpenEMR\Services\FHIR;
   4
   5 use OpenEMR\FHIR\R4\FHIRDomainResource\FHIRMedication;
   6 use OpenEMR\FHIR\R4\FHIRElement\FHIRCodeableConcept;
   7 use OpenEMR\FHIR\R4\FHIRElement\FHIRCoding;
   8 use OpenEMR\FHIR\R4\FHIRElement\FHIRDateTime;
   9 use OpenEMR\FHIR\R4\FHIRElement\FHIRId;
  10 use OpenEMR\FHIR\R4\FHIRResource\FHIRMedication\FHIRMedicationBatch;
  11 use OpenEMR\Services\DrugService;
  12 use OpenEMR\Services\FHIR\FhirServiceBase;
  13
  14 /**
  15  * FHIR Medication Service
  16  *
  17  * @coversDefaultClass OpenEMR\Services\FHIR\FhirMedicationService
  18  * @package            OpenEMR
  19  * @link               http://www.open-emr.org
  20  * @author             Yash Bothra <yashrajbothra786gmail.com>
  21  * @copyright          Copyright (c) 2020 Yash Bothra <yashrajbothra786gmail.com>
  22  * @license            https://github.com/openemr/openemr/blob/master/LICENSE GNU General Public License 3
  23  */
  24 class FhirMedicationService extends FhirServiceBase
  25 {
  26     /**
  27      * @var MedicationService
  28      */
  29     private $medicationService;
  30
  31     public function __construct()
  32     {
  33         parent::__construct();
  34         $this->medicationService = new DrugService();
  35     }
  36
  37     /**
  38      * Returns an array mapping FHIR Medication Resource search parameters to OpenEMR Medication search parameters
  39      *
  40      * @return array The search parameters
  41      */
  42     protected function loadSearchParameters()
  43     {
  44         return  [];
  45     }
  46
  47     /**
  48      * Parses an OpenEMR medication record, returning the equivalent FHIR Medication Resource
  49      *
  50      * @param  array   $dataRecord The source OpenEMR data record
  51      * @param  boolean $encode     Indicates if the returned resource is encoded into a string. Defaults to false.
  52      * @return FHIRMedication
  53      */
  54     public function parseOpenEMRRecord($dataRecord = array(), $encode = false)
  55     {
  56         $medicationResource = new FHIRMedication();
  57
  58         $meta = array('versionId' => '1', 'lastUpdated' => gmdate('c'));
  59         $medicationResource->setMeta($meta);
  60
  61         $id = new FHIRId();
  62         $id->setValue($dataRecord['uuid']);
  63         $medicationResource->setId($id);
  64
  65         if ($dataRecord['active'] == '1') {
  66             $medicationResource->setStatus("active");
  67         } else {
  68             $medicationResource->setStatus("inactive");
  69         }
  70
  71         if (!empty($dataRecord['drug_code'])) {
  72             $medicationCoding = new FHIRCoding();
  73             $medicationCode = new FHIRCodeableConcept();
  74             foreach ($dataRecord['drug_code'] as $code => $display) {
  75                 $medicationCoding->setSystem("http://www.nlm.nih.gov/research/umls/rxnorm");
  76                 $medicationCoding->setCode($code);
  77                 $medicationCoding->setDisplay($display);
  78                 $medicationCode->addCoding($medicationCoding);
  79             }
  80             $medicationResource->setCode($medicationCode);
  81         }
  82
  83         //alternative for switch case
  84         list($formDisplay, $formCode) = [
  85             '1' => ['suspension', 'C60928'],
  86             '2' => ['tablet', 'C42998'],
  87             '3' => ['capsule', 'C25158'],
  88             '4' => ['solution', 'C42986'],
  89             '5' => ['tsp', 'C48544'],
  90             '6' => ['ml', 'C28254'],
  91             '7' => ['units', 'C44278'],
  92             '8' => ['inhalation', 'C42944'],
  93             '9' => ['gtts(drops)', 'C48491'],
  94             '10' => ['cream', 'C28944'],
  95             '11' => ['ointment', 'C42966'],
  96             '12' => ['puff', 'C42944']
  97         ][$dataRecord['form']] ?? ['', ''];
  98
  99         if (!empty($formCode)) {
 100             $form = new FHIRCodeableConcept();
 101             $formCoding = new FHIRCoding();
 102             $formCoding->setSystem("http://ncimeta.nci.nih.gov");
 103             $formCoding->setCode($formCode);
 104             $formCoding->setDisplay($formDisplay);
 105             $form->addCoding($formCoding);
 106         }
 107
 108         if (isset($dataRecord['expiration']) || isset($dataRecord['expiration'])) {
 109             $batch = new FHIRMedicationBatch();
 110             if (isset($dataRecord['expiration'])) {
 111                 $expirationDate = new FHIRDateTime();
 112                 $expirationDate->setValue($dataRecord['expiration']);
 113                 $batch->setExpirationDate($expirationDate);
 114             }
 115             if (isset($dataRecord['lot_number'])) {
 116                 $batch->setLotNumber($dataRecord['lot_number']);
 117             }
 118             $medicationResource->setBatch($batch);
 119         }
 120
 121         if ($encode) {
 122             return json_encode($medicationResource);
 123         } else {
 124             return $medicationResource;
 125         }
 126     }
 127
 128     /**
 129      * Performs a FHIR Condition Resource lookup by FHIR Resource ID
 130      *
 131      * @param $fhirResourceId //The OpenEMR record's FHIR Condition Resource ID.
 132      */
 133     public function getOne($fhirResourceId, $puuidBind = null)
 134     {
 135         $processingResult = $this->medicationService->getOne($fhirResourceId, true);
 136         if (!$processingResult->hasErrors()) {
 137             if (count($processingResult->getData()) > 0) {
 138                 $openEmrRecord = $processingResult->getData()[0];
 139                 $fhirRecord = $this->parseOpenEMRRecord($openEmrRecord);
 140                 $processingResult->setData([]);
 141                 $processingResult->addData($fhirRecord);
 142             }
 143         }
 144         return $processingResult;
 145     }
 146
 147     /**
 148      * Searches for OpenEMR records using OpenEMR search parameters
 149      *
 150      * @param  array openEMRSearchParameters OpenEMR search fields
 151      * @param $puuidBind - NOT USED
 152      * @return ProcessingResult
 153      */
 154     public function searchForOpenEMRRecords($openEMRSearchParameters, $puuidBind = null)
 155     {
 156         return $this->medicationService->getAll($openEMRSearchParameters, false, true);
 157     }
 158
 159     public function parseFhirResource($fhirResource = array())
 160     {
 161         // TODO: If Required in Future
 162     }
 163
 164     public function insertOpenEMRRecord($openEmrRecord)
 165     {
 166         // TODO: If Required in Future
 167     }
 168
 169     public function updateOpenEMRRecord($fhirResourceId, $updatedOpenEMRRecord)
 170     {
 171         // TODO: If Required in Future
 172     }
 173     public function createProvenanceResource($dataRecord = array(), $encode = false)
 174     {
 175         // TODO: If Required in Future
 176     }
 177 }