faiadashu 0.5.3

Faiadashu FHIRDash - Build beautiful healthcare apps fast — use the Flutter™ SDK and follow the HL7® FHIR® standard.

example/lib/main.dart

import 'dart:developer' as developer;
import 'dart:io';

import 'package:faiadashu/faiadashu.dart';
import 'package:faiadashu/logging/logging.dart' as fdashlog;
import 'package:faiadashu_example/questionnaire_launch_tile.dart';
import 'package:faiadashu_online/restful/restful.dart';
import 'package:fhir/r4.dart';
import 'package:fhir_auth/r4/scopes/clinical_scope.dart';
import 'package:fhir_auth/r4/scopes/scopes.dart';
import 'package:fhir_auth/r4/smart_client/smart_client.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:flutter_localizations/flutter_localizations.dart';
import 'package:logging/logging.dart' as dartlog;
import 'package:pedantic/pedantic.dart';

import 'about_page.dart';
import 'disclaimer_page.dart';
import 'observation_page.dart';
import 'primitive_page.dart';

void main() {
  if (kDebugMode || kIsWeb) {
    dartlog.Logger.root.level = dartlog.Level.ALL;
    dartlog.Logger.root.onRecord.listen((dartlog.LogRecord rec) {
      developer.log(rec.message,
          time: rec.time,
          sequenceNumber: rec.sequenceNumber,
          level: rec.level.value,
          name: rec.loggerName,
          zone: rec.zone,
          error: rec.error,
          stackTrace: rec.stackTrace);
    });
  } else {
    dartlog.Logger.root.level = dartlog.Level.WARNING;
    dartlog.Logger.root.onRecord.listen((dartlog.LogRecord rec) {
      stdout.writeln('${rec.level.name}: ${rec.message}');
    });
  }

  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      theme: ThemeData.light(),
      darkTheme: ThemeData.dark(),
      title: 'Faiadashu™ FHIRDash Gallery',
      localizationsDelegates: const [
        FDashLocalizations.delegate,
        GlobalMaterialLocalizations.delegate,
        GlobalWidgetsLocalizations.delegate,
      ],
      supportedLocales: FDashLocalizations.supportedLocales,
      home: const HomePage(),
    );
  }
}

class HomePage extends StatefulWidget {
  const HomePage({Key? key}) : super(key: key);

  @override
  _HomePageState createState() => _HomePageState();
}

class _HomePageState extends State<HomePage> {
  static final _logger = fdashlog.Logger(_HomePageState);

  final ScrollController _listScrollController = ScrollController();

  final Map<String, QuestionnaireResponse?> _savedResponses = {};

  // Quick-and-dirty in-memory storage for QuestionnaireResponses
  // Not suitable for production use.
  void _saveResponse(String id, QuestionnaireResponse? response) {
    if (response == null) {
      return;
    }

    _savedResponses[id] = response;
  }

  // Quick-and-dirty in-memory storage for QuestionnaireResponses
  // Not suitable for production use.
  QuestionnaireResponse? _restoreResponse(String id) {
    if (_savedResponses.containsKey(id)) {
      return _savedResponses[id];
    } else {
      return null;
    }
  }

  // Quick-and-dirty upload of QuestionnaireResponse to server
  // Not suitable for production use (no error-handling)
  Future<void> _uploadResponse(
      String id, QuestionnaireResponse? response) async {
    if (response == null) {
      return;
    }
    // Upload will also save locally.
    _savedResponses[id] = response;
    await uploadQuestionnaireResponse(smartClient, response);
  }

  // Build up a registry of ValueSets and CodeSystems which are being referenced
  // in the questionnaires.
  //
  // It is typically *NOT* possible to resolve value sets through their URI, as
  // these do not point to real web-servers.
  //
  // This mechanism allows to add them from other sources.
  final valueSetProvider = AssetResourceProvider.fromMap(<String, String>{
    'http://hl7.org/fhir/ValueSet/administrative-gender':
        'assets/valuesets/fhir_valueset_administrative_gender.json',
    'http://hl7.org/fhir/administrative-gender':
        'assets/codesystems/fhir_codesystem_administrative_gender.json',
    'http://hl7.org/fhir/ValueSet/ucum-bodyweight':
        'assets/valuesets/ucum_bodyweight.json',
    'http://hl7.org/fhir/ValueSet/iso3166-1-2':
        'assets/valuesets/fhir_valueset_iso3166_1_2.json',
    'http://openhie.github.io/covid-19/ValueSet/WhoCrValueSetYesNoUnk':
        'assets/valuesets/who_cr_valueset_yes_no_unknown.json',
    'http://openhie.github.io/covid-19/ValueSet/WhoCrValueSetSexAtBirth':
        'assets/valuesets/who_cr_valueset_sex_at_birth.json',
    'http://openhie.github.io/covid-19/ValueSet/WhoCrValueSetAgeUnits':
        'assets/valuesets/who_cr_valueset_age_units.json',
    'http://loinc.org/vs/LL715-4': 'assets/valuesets/loinc_ll715_4.json',
    'http://openhie.github.io/covid-19/ValueSet/WhoCrValueSetPregnancyTrimester':
        'assets/valuesets/who_cr_valueset_pregnancy_trimester.json',
    'http://openhie.github.io/covid-19/ValueSet/WhoCrValueSetAdmin1':
        'assets/valuesets/who_cr_valueset_admin_1.json',
    'http://openhie.github.io/covid-19/ValueSet/WhoCrValueSetPatientOutcome':
        'assets/valuesets/who_cr_valueset_patient_outcome.json',
    'http://openhie.github.io/covid-19/CodeSystem/WhoCrCodeSystemPatientOutcome':
        'assets/codesystems/who_cr_codesystem_patient_outcome.json',
    'http://openhie.github.io/covid-19/CodeSystem/WhoCrCodeSystemPregnancyTrimester':
        'assets/codesystems/who_cr_codesystem_pregnancy_trimester.json',
    'http://openhie.github.io/covid-19/CodeSystem/WhoCrCodeSystemQuestionnaireChoice':
        'assets/codesystems/who_cr_codesystem_questionnaire_choice.json',
    'http://openhie.github.io/covid-19/CodeSystem/WhoCrCodeSystemReasonForTesting':
        'assets/codesystems/who_cr_codesystem_reason_for_testing.json',
    'http://openhie.github.io/covid-19/CodeSystem/WhoCrCodeSystemComorbidity':
        'assets/codesystems/who_cr_codesystem_comorbidity.json',
  });

  late final FhirResourceProvider resourceBundleProvider;

  late final SmartClient smartClient;

  @override
  void initState() {
    super.initState();
    resourceBundleProvider = RegistryFhirResourceProvider([
      InMemoryResourceProvider.inMemory(
          subjectResourceUri,
          // Patient ID matches a patient on Logica Sandbox server.
          Patient(id: Id('14603'), name: [
            HumanName(given: ['Emma'], family: 'Lee')
          ])),
      AssetImageAttachmentProvider(
          'http://example.org/images', 'assets/images'),
      valueSetProvider
    ]);

    // Setup a client for access to a Logica sandbox.
    smartClient = SmartClient(
      fhirUrl: FhirUri('https://api.logicahealth.org/faiadashu/data'),
      clientId: '9f03822a-e4ca-4ea6-aaa3-107661bd86a4',
      redirectUri: FhirUri('com.example.example://callback'),
      scopes: Scopes(
        clinicalScopes: [
          ClinicalScope(
            Role.patient,
            R4ResourceType.Patient,
            Interaction.any,
          ),
          ClinicalScope(
            Role.patient,
            R4ResourceType.QuestionnaireResponse,
            Interaction.any,
          ),
        ],
        openid: true,
        offlineAccess: true,
      ),
    );
  }

  @override
  void dispose() {
    try {
      unawaited(smartClient.logout());
    } catch (e) {
      _logger.warn('Could not log out', error: e);
    }
    super.dispose();
  }

  /// Schedules repaint after login / logout.
  void _onLoginChanged() {
    _logger.debug('_onLoginChanged: ${smartClient.isLoggedIn}');
    setState(() {
      // Rebuild
    });
  }

  @override
  Widget build(BuildContext context) {
    final uploadResponseFunction =
        smartClient.isLoggedIn ? _uploadResponse : null;

    return Scaffold(
      appBar: AppBar(
        title: Builder(
          builder: (BuildContext context) => RichText(
            text: TextSpan(
              text: 'Faiadashu™  FHIRDash —\n',
              style: DefaultTextStyle.of(context).style,
              children: const <TextSpan>[
                TextSpan(
                    text: 'Widgets for Digital Health',
                    style: TextStyle(fontSize: 12)),
              ],
            ),
          ),
        ),
        actions: [
          SmartLoginButton(smartClient, onLoginChanged: _onLoginChanged)
        ],
      ),
      body: SafeArea(
        child: Scrollbar(
          isAlwaysShown: true,
          controller: _listScrollController,
          child: ListView(
            controller: _listScrollController,
            children: [
              ListTile(
                title: const Text('About Faiadashu™ FHIRDash'),
                subtitle: const Text(
                  '[(ファイアダッシュ)]',
                  style: TextStyle(fontStyle: FontStyle.italic),
                ),
                onTap: () {
                  Navigator.push(
                      context,
                      MaterialPageRoute(
                          builder: (context) => const AboutPage()));
                },
              ),
              ListTile(
                title: const Text('Disclaimers'),
                subtitle: const Text('Legalese'),
                onTap: () {
                  Navigator.push(
                      context,
                      MaterialPageRoute(
                          builder: (context) => const DisclaimerPage()));
                },
              ),
              ListTile(
                title: const Text('Primitive Types'),
                subtitle: const Text(
                    'Formatted, internationalized text output of FHIR primitive types.'),
                onTap: () {
                  Navigator.push(
                      context,
                      MaterialPageRoute(
                          builder: (context) => const PrimitivePage()));
                },
              ),
              ListTile(
                title: const Text('Observation'),
                subtitle: const Text(
                    'Formatted, internationalized text output of observations.'),
                onTap: () {
                  Navigator.push(
                      context,
                      MaterialPageRoute(
                          builder: (context) => ObservationPage()));
                },
              ),
              QuestionnaireLaunchTile(
                title: 'SDC Demo Scroller',
                subtitle: 'A gallery of SDC feature support.',
                fhirResourceProvider: resourceBundleProvider,
                questionnairePath: 'assets/instruments/sdc_demo.json',
                saveResponseFunction: _saveResponse,
                restoreResponseFunction: _restoreResponse,
                uploadResponseFunction: uploadResponseFunction,
              ),
              QuestionnaireLaunchTile(
                title: 'FHIR Hot Beverage IG',
                subtitle: 'WIP Beverage Questionnaire',
                fhirResourceProvider: resourceBundleProvider,
                questionnairePath: 'assets/instruments/beverage_ig.json',
                saveResponseFunction: _saveResponse,
                restoreResponseFunction: _restoreResponse,
                uploadResponseFunction: uploadResponseFunction,
              ),
              QuestionnaireLaunchTile(
                title: 'SDC Profile Example Render',
                subtitle:
                    'The reference questionnaire for SDC render features.',
                fhirResourceProvider: resourceBundleProvider,
                questionnairePath: 'assets/instruments/sdc-example-render.json',
                saveResponseFunction: _saveResponse,
                restoreResponseFunction: _restoreResponse,
                uploadResponseFunction: uploadResponseFunction,
              ),
              QuestionnaireLaunchTile(
                title: 'Argonaut Questionnaire Sampler',
                subtitle:
                    'Reference sample from the Argonaut Questionnaire Implementation Guide.',
                fhirResourceProvider: resourceBundleProvider,
                questionnairePath: 'assets/instruments/argonaut_sampler.json',
                saveResponseFunction: _saveResponse,
                restoreResponseFunction: _restoreResponse,
                uploadResponseFunction: uploadResponseFunction,
              ),
              QuestionnaireLaunchTile(
                locale: const Locale('de', 'DE'),
                title: 'Der Argonaut-Fragebogen',
                subtitle: 'Ein deutsches Beispiel für einen Fragebogen.',
                fhirResourceProvider: resourceBundleProvider,
                questionnairePath: 'assets/instruments/argonaut_sampler.json',
                saveResponseFunction: _saveResponse,
                restoreResponseFunction: _restoreResponse,
                uploadResponseFunction: uploadResponseFunction,
              ),
              QuestionnaireLaunchTile(
                locale: const Locale('ar', 'BH'),
                title: 'استبيان "أرجونوت"',
                subtitle: 'مثال على استبيان عربي.',
                fhirResourceProvider: resourceBundleProvider,
                questionnairePath: 'assets/instruments/argonaut_sampler.json',
                saveResponseFunction: _saveResponse,
                restoreResponseFunction: _restoreResponse,
                uploadResponseFunction: uploadResponseFunction,
              ),
              QuestionnaireLaunchTile(
                locale: const Locale('ja', 'JP'),
                title: 'アルゴノート」のアンケートです。',
                subtitle: '日本でのアンケートの例です。',
                fhirResourceProvider: resourceBundleProvider,
                questionnairePath: 'assets/instruments/argonaut_sampler.json',
                saveResponseFunction: _saveResponse,
                restoreResponseFunction: _restoreResponse,
                uploadResponseFunction: uploadResponseFunction,
              ),
              QuestionnaireLaunchTile(
                title: 'PHQ9 Questionnaire Scroller',
                subtitle: 'Simple choice-based survey with a total score.',
                fhirResourceProvider: resourceBundleProvider,
                questionnairePath: 'assets/instruments/phq9_instrument.json',
                saveResponseFunction: _saveResponse,
                restoreResponseFunction: _restoreResponse,
                uploadResponseFunction: uploadResponseFunction,
              ),
              ListTile(
                title: const Text('PHQ9 Questionnaire Stepper'),
                subtitle: const Text(
                    'Simple choice-based survey with a total score.'),
                onTap: () {
                  Navigator.push(
                      context,
                      MaterialPageRoute(
                          builder: (context) => QuestionnaireStepperPage(
                              fhirResourceProvider: AssetResourceProvider.singleton(
                                  questionnaireResourceUri,
                                  'assets/instruments/phq9_instrument.json'))));
                },
              ),
              ListTile(
                title: const Text('Cherry blossom Filler'),
                subtitle: const Text(
                    'Illustrates embedding of questionnaire (no Scaffold)'),
                onTap: () {
                  Navigator.push(
                      context,
                      MaterialPageRoute(
                          builder: (context) => QuestionnaireScroller(
                                scaffoldBuilder:
                                    const _CherryBlossomScaffoldBuilder(),
                                fhirResourceProvider:
                                    RegistryFhirResourceProvider([
                                  resourceBundleProvider,
                                  AssetResourceProvider.singleton(
                                      questionnaireResourceUri,
                                      'assets/instruments/sdc_demo.json')
                                ]),
                                questionnaireTheme: const QuestionnaireTheme(
                                    canSkipQuestions: true,
                                    showNullAnswerOption: false,
                                    showQuestionNumbers: true),
                              )));
                },
              ),
              QuestionnaireLaunchTile(
                title: 'HF Questionnaire Scroller',
                subtitle: 'A heart failure survey with a total score.',
                fhirResourceProvider: resourceBundleProvider,
                questionnairePath: 'assets/instruments/hf_instrument.json',
                saveResponseFunction: _saveResponse,
                restoreResponseFunction: _restoreResponse,
                uploadResponseFunction: uploadResponseFunction,
              ),
              QuestionnaireLaunchTile(
                title: 'PRAPARE Questionnaire Scroller',
                subtitle: 'Real-world, mixed-type survey from the US',
                fhirResourceProvider: resourceBundleProvider,
                questionnairePath: 'assets/instruments/prapare_instrument.json',
                saveResponseFunction: _saveResponse,
                restoreResponseFunction: _restoreResponse,
                uploadResponseFunction: uploadResponseFunction,
              ),
              QuestionnaireLaunchTile(
                title: 'Bluebook Questionnaire Scroller',
                subtitle: 'Real-world, mixed-type survey from Australia',
                // Provide a hard-coded response for initial population
                fhirResourceProvider: RegistryFhirResourceProvider([
                  AssetResourceProvider.singleton(
                      questionnaireResponseResourceUri,
                      'assets/responses/bluebook_response.json'),
                  resourceBundleProvider
                ]),
                questionnairePath: 'assets/instruments/bluebook.json',
                saveResponseFunction: _saveResponse,
                restoreResponseFunction: _restoreResponse,
                uploadResponseFunction: uploadResponseFunction,
              ),
              QuestionnaireLaunchTile(
                title: 'WHO COVID19 Surveillance',
                subtitle:
                    'Real-world example with very long ValueSets and enableWhen',
                fhirResourceProvider: resourceBundleProvider,
                questionnairePath: 'assets/instruments/who_covid19.json',
                saveResponseFunction: _saveResponse,
                restoreResponseFunction: _restoreResponse,
                uploadResponseFunction: uploadResponseFunction,
              ),
            ],
          ),
        ),
      ),
    );
  }
}

// Demonstrate the creation of a scrolling questionnaire with no Scaffold.
class _CherryBlossomScaffoldBuilder extends QuestionnairePageScaffoldBuilder {
  const _CherryBlossomScaffoldBuilder();

  @override
  Widget build(BuildContext context,
      {required void Function(void Function() p1) setStateCallback,
      required Widget child}) {
    return Theme(
      data: ThemeData.light(), // Make it always light
      // We have to take care of SafeArea ourselves
      child: SafeArea(
        // This surround Card provides the Material parent that is required by
        // the QuestionnaireFiller. Other potential Material parents would be
        // Scaffolds.
        child: Card(
          // This column surrounds the scroller with whimsical add-ons
          child: Column(
            children: [
              Container(
                padding: const EdgeInsets.symmetric(vertical: 8),
                child: Text(
                  '🦄🌸🦄🌸🦄🌸🦄',
                  style: Theme.of(context).textTheme.headline4,
                ),
              ),
              Expanded(child: child), // This child is the actual scroller
              const Divider(),
              // We're putting our own exit button in here
              Container(
                  padding: const EdgeInsets.symmetric(vertical: 8),
                  child: OutlinedButton(
                      onPressed: () => Navigator.pop(context),
                      child: const Text('桜の園からの帰り道'))),
            ],
          ),
        ),
      ),
    );
  }
}