mih-project/Frontend/lib/mih_packages/authentication/biometric_check.dart

import 'package:Mzansi_Innovation_Hub/main.dart';
import 'package:Mzansi_Innovation_Hub/mih_components/mih_inputs_and_buttons/mih_button.dart';
import 'package:Mzansi_Innovation_Hub/mih_components/mih_layout/mih_action.dart';
import 'package:Mzansi_Innovation_Hub/mih_components/mih_layout/mih_body.dart';
import 'package:Mzansi_Innovation_Hub/mih_components/mih_layout/mih_header.dart';
import 'package:Mzansi_Innovation_Hub/mih_components/mih_layout/mih_layout_builder.dart';
import 'package:Mzansi_Innovation_Hub/mih_packages/mih_home/mih_profile_getter.dart';
import 'package:flutter/material.dart';
import 'package:local_auth/local_auth.dart';
import 'package:supertokens_flutter/supertokens.dart';

class BiometricCheck extends StatefulWidget {
  final bool personalSelected;
  final bool firstBoot;
  const BiometricCheck({
    super.key,
    required this.personalSelected,
    required this.firstBoot,
  });

  @override
  State<BiometricCheck> createState() => _BiometricCheckState();
}

class _BiometricCheckState extends State<BiometricCheck> {
  bool _isBioAuthenticated = false;
  final LocalAuthentication _auth = LocalAuthentication();

  MIHAction getActionButton() {
    return MIHAction(
      icon: Padding(
        padding: const EdgeInsets.all(10.0),
        child: SizedBox(
          height: 50,
          child: Image.asset('images/logo_light.png'),
        ),
      ),
      iconSize: 35,
      onTap: () async {
        await SuperTokens.signOut(completionHandler: (error) {
          print(error);
        });
        if (await SuperTokens.doesSessionExist() == false) {
          Navigator.of(context).popAndPushNamed('/');
        }
        // Navigator.of(context).pushNamed(
        //   '/about',
        //   //arguments: widget.signedInUser,
        // );
      },
    );
  }

  MIHHeader getHeader() {
    return const MIHHeader(
      headerAlignment: MainAxisAlignment.center,
      headerItems: [
        Text(
          "",
          style: TextStyle(
            fontWeight: FontWeight.bold,
            fontSize: 25,
          ),
        ),
      ],
    );
  }

  void authenticateUser() async {
    final bool canAuthWithBio = await _auth.canCheckBiometrics;
    print("Biomentric Available: $canAuthWithBio");
    if (canAuthWithBio) {
      try {
        final bool didBioAuth = await _auth.authenticate(
          localizedReason: "Authenticate to access MIH",
          options: const AuthenticationOptions(
            biometricOnly: false,
          ),
        );
        if (didBioAuth) {
          setState(() {
            _isBioAuthenticated = true;
          });
        }
        print("Authenticated: $didBioAuth");
      } catch (error) {
        print(error);
      }
    }
  }

  MIHBody getBody() {
    return MIHBody(
      borderOn: false,
      bodyItems: [
        SafeArea(
          child: Center(
            child: Padding(
              padding: const EdgeInsets.all(25.0),
              child: Column(
                mainAxisAlignment: MainAxisAlignment.center,
                children: [
                  //logo
                  Icon(
                    Icons.fingerprint,
                    size: 100,
                    color:
                        MzanziInnovationHub.of(context)!.theme.secondaryColor(),
                  ),
                  //spacer
                  const SizedBox(height: 10),
                  //Heading
                  Text(
                    'Biomentric Authentication',
                    textAlign: TextAlign.center,
                    style: TextStyle(
                      fontSize: 25,
                      fontWeight: FontWeight.bold,
                      color: MzanziInnovationHub.of(context)!
                          .theme
                          .secondaryColor(),
                    ),
                  ),
                  //spacer
                  const SizedBox(height: 25),
                  if (!_isBioAuthenticated)
                    Icon(
                      Icons.lock,
                      size: 200,
                      color: MzanziInnovationHub.of(context)!
                          .theme
                          .secondaryColor(),
                    ),
                  if (_isBioAuthenticated)
                    Icon(
                      Icons.lock_open,
                      size: 200,
                      color: MzanziInnovationHub.of(context)!
                          .theme
                          .secondaryColor(),
                    ),
                  const SizedBox(height: 30),
                  Container(
                    alignment: Alignment.bottomCenter,
                    child: SizedBox(
                      width: 500.0,
                      height: 50.0,
                      child: MIHButton(
                        buttonText: "Unlock",
                        buttonColor: MzanziInnovationHub.of(context)!
                            .theme
                            .secondaryColor(),
                        textColor: MzanziInnovationHub.of(context)!
                            .theme
                            .primaryColor(),
                        onTap: () async {
                          //Check Biometrics
                          authenticateUser();
                        },
                      ),
                    ),
                  ),
                ],
              ),
            ),
          ),
        ),
      ],
    );
  }

  Widget getBiomentricAuthScreen() {
    return MIHLayoutBuilder(
      actionButton: getActionButton(),
      header: getHeader(),
      secondaryActionButton: null,
      body: getBody(),
      actionDrawer: null,
      secondaryActionDrawer: null,
      bottomNavBar: null,
      pullDownToRefresh: false,
      onPullDown: () async {},
    );
  }

  @override
  void initState() {
    // TODO: implement initState
    super.initState();
    if (widget.firstBoot == true) authenticateUser();
  }

  @override
  Widget build(BuildContext context) {
    if (MzanziInnovationHub.of(context)!.theme.getPlatform() == "Web") {
      return MIHProfileGetter(
        personalSelected: widget.personalSelected,
      );
    } else if (!widget.firstBoot) {
      return MIHProfileGetter(
        personalSelected: widget.personalSelected,
      );
    } else {
      if (_isBioAuthenticated) {
        return MIHProfileGetter(
          personalSelected: widget.personalSelected,
        );
      } else {
        return getBiomentricAuthScreen();
      }
    }
  }
}