Can also create new patients on Hapi

lib/screens/fhir/create.patient.dart

@@ -0,0 +1,33 @@
+// class FhirView extends StatelessWidget {
+//   @override
+//   Widget build(BuildContext context) {
+//     return Center(
+//       child: SharedActionButton(
+//         title: 'Get FHIR data',
+//         onPressed: () async {
+//           List<Quantity> data = await FhirService().getResponse();
+//           Get.defaultDialog(
+//               content: Container(
+//             height: 500,
+//             width: 300,
+//             child: ListView(
+//               shrinkWrap: true,
+//               children: <Widget>[
+//                 ...data.map((f) {
+//                   return Row(
+//                     mainAxisAlignment: MainAxisAlignment.spaceBetween,
+//                     children: <Widget>[
+//                       Text('${f.value}'),
+//                       Text('${f.unit}'),
+//                     ],
+//                   );
+//                 })
+//               ],
+//             ),
+//           ));
+//           print(data);
+//         },
+//       ),
+//     );
+//   }
+// }

lib/screens/fhir/fhir.dart

@@ -3,37 +3,94 @@ import 'package:flutter/material.dart';
 import 'package:get/get.dart';
 import 'package:symptom_tracker/services/services.dart';
 import 'package:symptom_tracker/shared/shared.dart';
+import 'package:url_launcher/url_launcher.dart';
 
 class FhirView extends StatelessWidget {
+  final lastName = TextEditingController(text: '');
+  final firstName = TextEditingController(text: '');
+
+  @override
+  void dispose() {
+    lastName.dispose();
+    firstName.dispose();
+  }
+
   @override
   Widget build(BuildContext context) {
-    return Center(
-      child: SharedActionButton(
-        title: 'Get FHIR data',
-        onPressed: () async {
-          List<Quantity> data = await FhirService().getResponse();
-          Get.defaultDialog(
-              content: Container(
-            height: 500,
-            width: 300,
-            child: ListView(
-              shrinkWrap: true,
-              children: <Widget>[
-                ...data.map((f) {
-                  return Row(
-                    mainAxisAlignment: MainAxisAlignment.spaceBetween,
-                    children: <Widget>[
-                      Text('${f.value}'),
-                      Text('${f.unit}'),
-                    ],
-                  );
-                })
-              ],
-            ),
-          ));
-          print(data);
-        },
-      ),
+    return Column(
+      mainAxisAlignment: MainAxisAlignment.spaceEvenly,
+      children: [
+        Row(
+          children: <Widget>[
+            _nameContainer(lastName, 'Last name'),
+            _nameContainer(firstName, 'First name'),
+          ],
+        ),
+        _linkContainer(firstName, lastName),
+        _patient(firstName, lastName),
+        _fhir,
+      ],
     );
   }
 }
+
+Container _linkContainer(
+        TextEditingController first, TextEditingController last) =>
+    Container(
+      child: InkWell(
+        child: Text(
+          'Click to see new patient',
+          style: TextStyle(
+            color: Colors.purple,
+            fontSize: 18,
+            decoration: TextDecoration.underline,
+          ),
+        ),
+        onTap: () async => await launch('http://hapi.fhir.org/baseR4/'
+            'Patient?given=${first.text}&family=${last.text}&_pretty=true'),
+      ),
+    );
+
+Container _nameContainer(TextEditingController name, String text) => Container(
+      width: 200,
+      child: TextField(
+        controller: name,
+        decoration: InputDecoration(hintText: text),
+      ),
+    );
+
+SharedActionButton _patient(
+        TextEditingController first, TextEditingController last) =>
+    SharedActionButton(
+      title: 'Create Patient',
+      onPressed: () async {
+        await FhirService().createPatient(first.text, last.text);
+      },
+    );
+
+SharedActionButton _fhir = SharedActionButton(
+  title: 'Get FHIR data',
+  onPressed: () async {
+    List<Quantity> data = await FhirService().getResponse();
+    Get.defaultDialog(
+        content: Container(
+      height: 500,
+      width: 300,
+      child: ListView(
+        shrinkWrap: true,
+        children: <Widget>[
+          ...data.map((f) {
+            return Row(
+              mainAxisAlignment: MainAxisAlignment.spaceBetween,
+              children: <Widget>[
+                Text('${f.value}'),
+                Text('${f.unit}'),
+              ],
+            );
+          })
+        ],
+      ),
+    ));
+    print(data);
+  },
+);

lib/screens/fhir/fhir.screen.dart

@@ -18,7 +18,9 @@ class FhirScreen extends StatelessWidget {
         appBar: SharedAppBar(
           title: 'FHIR',
           actions: [
-            IconButton(icon: Icon(Icons.close), onPressed: () => Get.offAll(HomeScreen())),
+            IconButton(
+                icon: Icon(Icons.close),
+                onPressed: () => Get.offAll(HomeScreen())),
           ],
         ),
         body: _buildBody(),

lib/services/fhir.service.dart

@@ -10,16 +10,19 @@ class FhirService {
     final String identifier = 'test-client';
     final String secret = 'verysecret';
     final String grantType = 'client_credentials';
-    var response1 = await http
-        .post('$server/auth/token?client_id=$identifier&grant_type=$grantType&client_secret=$secret', headers: headers);
+    var response1 = await http.post(
+        '$server/auth/token?client_id=$identifier&grant_type=$grantType&client_secret=$secret',
+        headers: headers);
     if (response1.statusCode == 200) {
       var parsedbody = json.decode(response1.body);
 
       print('parsedbody: $parsedbody');
       var token = parsedbody['token_type'] + ' ' + parsedbody['access_token'];
       headers.putIfAbsent('Authorization', () => token);
     }
-    var response2 = await http.get('$server/fhir/Observation?patient=test123&category=vital-signs', headers: headers);
+    var response2 = await http.get(
+        '$server/fhir/Observation?patient=test123&category=vital-signs',
+        headers: headers);
     Bundle vitalsBundle = Bundle.fromJson(json.decode(response2.body));
     print('vitalsBundle: $vitalsBundle');
 
@@ -66,4 +69,20 @@ class FhirService {
     }
     return data;
   }
+
+  Future<void> createPatient(String first, String last) async {
+    var newPatient = Patient(
+      name: [
+        HumanName(
+          given: [first],
+          family: last,
+        ),
+      ],
+    );
+
+    final String server = 'http://hapi.fhir.org/baseR4/';
+    final Map<String, String> headers = {'Content-type': 'application/json'};
+    await http.post('$server/Patient?_format=json&_pretty=true',
+        headers: headers, body: jsonEncode(newPatient.toJson()));
+  }
 }

pubspec.lock

@@ -562,6 +562,34 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.1.6"
+  url_launcher:
+    dependency: "direct main"
+    description:
+      name: url_launcher
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "5.4.7"
+  url_launcher_macos:
+    dependency: transitive
+    description:
+      name: url_launcher_macos
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.0.1+5"
+  url_launcher_platform_interface:
+    dependency: transitive
+    description:
+      name: url_launcher_platform_interface
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.7"
+  url_launcher_web:
+    dependency: transitive
+    description:
+      name: url_launcher_web
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.1.1+5"
   vector_math:
     dependency: transitive
     description:
@@ -599,4 +627,4 @@ packages:
     version: "2.2.1"
 sdks:
   dart: ">=2.7.0 <3.0.0"
-  flutter: ">=1.12.13+hotfix.4 <2.0.0"
+  flutter: ">=1.12.13+hotfix.5 <2.0.0"

pubspec.yaml

@@ -39,6 +39,7 @@ dependencies:
   fhir_r4:
     git:
       url: git://github.com/Dokotela/fhir_r4.git
+  url_launcher: ^5.4.7
 
   # The following adds the Cupertino Icons font to your application.
   # Use with the CupertinoIcons class for iOS style icons.