src/Services/FHIR/FhirValidationService.php

   1 <?php
   2
   3 namespace OpenEMR\Services\FHIR;
   4
   5 use OpenEMR\Services\FhirOperationOutcomeResourceService;
   6 use OpenEMR\FHIR\R4\FHIRDomainResource\FHIROperationOutcome;
   7 use OpenEMR\FHIR\R4\FHIRDomainResource\FHIRPatient;
   8 use OpenEMR\FHIR\R4\FHIRResource\FHIROperationOutcome\FHIROperationOutcomeIssue;
   9 use OpenEMR\FHIR\R4\FHIRElement\FHIRIssueSeverity;
  10 use OpenEMR\FHIR\R4\FHIRElement\FHIRIssueType;
  11 use OpenEMR\FHIR\R4\FHIRElement\FHIRCodeableConcept;
  12
  13 class FhirValidationService
  14 {
  15     public function validate($data)
  16     {
  17         if (!array_key_exists('resourceType', $data)) {
  18             return $this->operationOutcomeResourceService('error', 'invalid', false, 'resourceType Not Found');
  19         }
  20         if ($data['resourceType']) {
  21             $class = 'OpenEMR\FHIR\R4\FHIRDomainResource\FHIR' . $data['resourceType'];
  22             unset($data['resourceType']);
  23             try {
  24                 $patientResource = new $class($data);
  25             } catch (\InvalidArgumentException $e) {
  26                 return $this->
  27                 operationOutcomeResourceService('fatal', 'invalid', false, $e->getMessage());
  28             } catch (\Error $e) {
  29                 return $this->
  30                 operationOutcomeResourceService('fatal', 'invalid', false, 'resourceType Not Found');
  31             }
  32             $diff = array_diff_key($data, (array) $patientResource);
  33             if ($diff) {
  34                 return $this->operationOutcomeResourceService(
  35                     'error',
  36                     'invalid',
  37                     "Invalid content " . array_key_first($diff) . " Found",
  38                     false
  39                 );
  40             }
  41         }
  42     }
  43
  44     public function operationOutcomeResourceService(
  45         $severity_value,
  46         $code_value,
  47         $encode = true,
  48         $details_value = '',
  49         $diagnostics_value = '',
  50         $expression = ''
  51     ) {
  52         $resource = new FHIROperationOutcome();
  53         $issue = new FHIROperationOutcomeIssue();
  54         $severity = new FHIRIssueSeverity();
  55         $severity->setValue($severity_value);
  56         $issue->setSeverity($severity);
  57         $code = new FHIRIssueType();
  58         $code->setValue($code_value);
  59         $issue->setCode($code);
  60         if ($details_value) {
  61             $details = new FHIRCodeableConcept();
  62             $details->setText($details_value);
  63             $issue->setDetails($details);
  64         }
  65         if ($diagnostics_value) {
  66             $diagnostics = new FHIRString();
  67             $diagnostics->setValue($diagnostics_value);
  68             $issue->setDiagnostics($diagnostics);
  69         }
  70         if ($expression_value) {
  71             $expression = new FHIRCodeableConcept();
  72             $expression->setText($expression_value);
  73             $issue->setExpression($expression);
  74         }
  75         $resource->addIssue($issue);
  76         if ($encode) {
  77             return json_encode($resource);
  78         } else {
  79             return $resource;
  80         }
  81     }
  82 }