mobdr/lib/ui/authentication/verification.dart

import 'package:flutter/material.dart';
import 'package:fluttertoast/fluttertoast.dart';
import 'package:pin_code_fields/pin_code_fields.dart';
import 'package:mobdr/network/api_provider.dart';
import 'package:mobdr/ui/home.dart';
import 'package:mobdr/ui/authentication/signin.dart';

class VerificationPage extends StatefulWidget {
  @override
  _VerificationPageState createState() => _VerificationPageState();
}

class _VerificationPageState extends State<VerificationPage> {
  Color _color1 = Color(0xFF07ac12);
  Color _color2 = Color(0xFF515151);
  Color _color3 = Color(0xff777777);
  Color _color4 = Color(0xFFaaaaaa);

  bool _buttonDisabled = true;
  String _securityCode = '';
  ApiProvider _apiProvider = ApiProvider(); // TODO: A voir si bien positionné

  @override
  void initState() {
    super.initState();
  }

  @override
  void dispose() {
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
        body: ListView(
      padding: EdgeInsets.fromLTRB(30, 120, 30, 30),
      children: <Widget>[
        Center(child: Icon(Icons.phone_android, color: _color1, size: 50)),
        SizedBox(height: 20),
        Center(
            child: Text(
          'Enter the Verification Code',
          style: TextStyle(
              fontSize: 16, fontWeight: FontWeight.bold, color: _color2),
        )),
        SizedBox(
          height: 20,
        ),
        Container(
          width: MediaQuery.of(context).size.width / 1.5,
          child: Text(
            'The verification code has been sent by mail',
            style: TextStyle(fontSize: 13, color: _color3),
            textAlign: TextAlign.center,
          ),
        ),
        SizedBox(
          height: 40,
        ),
        Padding(
          padding: EdgeInsets.symmetric(horizontal: 50),
          child: PinCodeTextField(
            autoFocus: true,
            appContext: context,
            keyboardType: TextInputType.number,
            length: 4,
            showCursor: false,
            obscureText: false,
            animationType: AnimationType.fade,
            pinTheme: PinTheme(
                shape: PinCodeFieldShape.underline,
                fieldHeight: 50,
                fieldWidth: 40,
                inactiveColor: _color4,
                activeColor: _color1,
                selectedColor: _color1),
            animationDuration: Duration(milliseconds: 300),
            backgroundColor: Colors.transparent,
            onChanged: (value) {
              setState(() {
                if (value.length == 4) {
                  _buttonDisabled = false;
                } else {
                  _buttonDisabled = true;
                }
                _securityCode = value;
              });
            },
            beforeTextPaste: (text) {
              return false;
            },
          ),
        ),
        SizedBox(
          height: 40,
        ),
        Container(
          child: SizedBox(
              width: double.maxFinite,
              child: TextButton(
                  style: ButtonStyle(
                    backgroundColor: MaterialStateProperty.resolveWith<Color>(
                      (Set<MaterialState> states) =>
                          _buttonDisabled ? Colors.grey[300]! : _color1,
                    ),
                    overlayColor: MaterialStateProperty.all(Colors.transparent),
                    shape: MaterialStateProperty.all(RoundedRectangleBorder(
                      borderRadius: BorderRadius.circular(3.0),
                    )),
                  ),
                  onPressed: () async {
                    if (!_buttonDisabled) {
                      FocusScope.of(context).unfocus();

                      var apiResponse = await _apiProvider.login(
                          'fbenoist', '9295', _securityCode);
                      if (apiResponse == 'OK') {
                        Navigator.of(context).pushAndRemoveUntil(
                            MaterialPageRoute(builder: (context) => HomePage()),
                            (Route<dynamic> route) => false);
                      } else {
                        Fluttertoast.showToast(
                            msg: apiResponse, toastLength: Toast.LENGTH_SHORT);
                        Navigator.of(context).pushAndRemoveUntil(
                            MaterialPageRoute(
                                builder: (context) => SigninPage()),
                            (Route<dynamic> route) => false);
                      }
                    }
                  },
                  child: Padding(
                    padding: const EdgeInsets.symmetric(vertical: 5.0),
                    child: Text(
                      'Verify',
                      style: TextStyle(
                          fontSize: 16,
                          fontWeight: FontWeight.bold,
                          color: _buttonDisabled
                              ? Colors.grey[600]
                              : Colors.white),
                      textAlign: TextAlign.center,
                    ),
                  ))),
        ),
        SizedBox(
          height: 40,
        ),
        Center(
          child: Wrap(
            children: [
              Text(
                "Didn't receive the code? ",
                style: TextStyle(fontSize: 13, color: _color4),
              ),
              GestureDetector(
                onTap: () {
                  Fluttertoast.showToast(
                      msg: 'Click resend', toastLength: Toast.LENGTH_SHORT);
                },
                child: Text(
                  'Resend',
                  style: TextStyle(fontSize: 13, color: _color1),
                ),
              )
            ],
          ),
        ),
      ],
    ));
  }
}