doctor_app_flutter/lib/widgets/auth/login_form.dart

import 'package:doctor_app_flutter/providers/projects_provider.dart';
import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
import 'package:flutter/services.dart';
import 'package:hexcolor/hexcolor.dart';
import 'package:imei_plugin/imei_plugin.dart';
import 'package:provider/provider.dart';
import 'package:shared_preferences/shared_preferences.dart';

import '../../models/user_model.dart';
import '../../providers/auth_provider.dart';
import '../../routes.dart';

class LoginForm extends StatefulWidget {
  LoginForm({
    Key key,
  }) : super(key: key);

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

class _LoginFormState extends State<LoginForm> {
  final loginFormKey = GlobalKey<FormState>();
  String _platformImei = 'Unknown';
  String uniqueId = "Unknown";
  var projectsList = [];

  var userInfo = UserModel(
      UserID: '',
      Password: '',
      ProjectID: 15,
      LanguageID: 2,
      IPAdress: "11.11.11.11",
      VersionID: 1.2,
      Channel: 9,
      SessionID: "i1UJwCTSqt");

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

  @override
  Widget build(BuildContext context) {
    if (projectsList.length == 0) {
      getProjectsList();
    }
    AuthProvider authProv = Provider.of<AuthProvider>(context);

    return LayoutBuilder(builder: (ctx, constraints) {
      var smallScreenSize = 660;
      bool isSmallScreen = constraints.maxWidth <= smallScreenSize;
      return Form(
        key: loginFormKey,
        child: Container(
          width: constraints.maxWidth * 0.9,
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: <Widget>[
              SizedBox(
                height: 20,
              ),
              TextFormField(
                decoration: InputDecoration(
                    prefixIcon: Image.asset('assets/images/user_id_icon.png'),
                    hintText: 'Enter ID',
                    hintStyle: TextStyle(
                        fontSize:
                            isSmallScreen ? 14 : constraints.maxWidth * 0.024),
                    enabledBorder: OutlineInputBorder(
                      borderRadius: BorderRadius.all(Radius.circular(20)),
                      borderSide: BorderSide(color: Hexcolor('#CCCCCC')),
                    ),
                    focusedBorder: OutlineInputBorder(
                      borderRadius: BorderRadius.all(Radius.circular(10.0)),
                      borderSide:
                          BorderSide(color: Theme.of(context).primaryColor),
                    )
                    //BorderRadius.all(Radius.circular(20));
                    ),
                validator: (value) {
                  if (value.isEmpty) {
                    return 'Please enter some text';
                  }
                  return null;
                },
                onSaved: (value) {
                  userInfo.UserID = value;
                },
              ),
              SizedBox(
                height: 20,
              ),
              TextFormField(
                  obscureText: true,
                  decoration: InputDecoration(
                      prefixIcon:
                          Image.asset('assets/images/password_icon.png'),
                      hintText: 'Enter Password',
                      hintStyle: TextStyle(
                          fontSize: isSmallScreen
                              ? 14
                              : constraints.maxWidth * 0.024),
                      enabledBorder: OutlineInputBorder(
                        borderRadius: BorderRadius.all(Radius.circular(20)),
                        borderSide: BorderSide(color: Hexcolor('#CCCCCC')),
                      ),
                      focusedBorder: OutlineInputBorder(
                        borderRadius: BorderRadius.all(Radius.circular(10.0)),
                        borderSide:
                            BorderSide(color: Theme.of(context).primaryColor),
                      )
                      //BorderRadius.all(Radius.circular(20));
                      ),
                  validator: (value) {
                    if (value.isEmpty) {
                      return 'Please enter some text';
                    }
                    return null;
                  },
                  onSaved: (value) {
                    userInfo.Password = value;
                  }),
              SizedBox(
                height: 20,
              ),
              // TextFormField(
              //   decoration: InputDecoration(
              //       prefixIcon: Image.asset('assets/images/hospital_icon.png'),
              //       hintText: 'Select Project',
              //       hintStyle: TextStyle(
              //           fontSize:
              //               isSmallScreen ? 14 : constraints.maxWidth * 0.024),
              //       enabledBorder: OutlineInputBorder(
              //         borderRadius: BorderRadius.all(Radius.circular(20)),
              //         borderSide: BorderSide(color: Hexcolor('#CCCCCC')),
              //       ),
              //       focusedBorder: OutlineInputBorder(
              //         borderRadius: BorderRadius.all(Radius.circular(10.0)),
              //         borderSide:
              //             BorderSide(color: Theme.of(context).primaryColor),
              //       )
              //       //BorderRadius.all(Radius.circular(20));
              //       ),
              //   validator: (value) {
              //     if (value.isEmpty) {
              //       return 'Please enter some text';
              //     }
              //     return null;
              //   },
              // ),
              // 
              Container(
                decoration: BoxDecoration(
                  
                  borderRadius: BorderRadius.all(Radius.circular(10.0)),
                  // border: Border.all(color: Theme.of(context).primaryColor),
                ),
                width: double.infinity,
                child: DropdownButton(
                  value: userInfo.ProjectID,
                  iconSize: 24,
                  elevation: 16,
                  selectedItemBuilder: (BuildContext context) {
                    return projectsList.map((item) {
                      return Text(item['Desciption']);
                    }).toList();
                  },
                  items: projectsList.map((item) {
                    return DropdownMenuItem(
                      child: Text('${item['Desciption']}'),
                      value: item['ID'],
                    );
                  }).toList(),
                  onChanged: (val) {
                    userInfo.ProjectID = val;
                  },
                ),
              ),
              
              SizedBox(
                height: 20,
              ),
              Row(
                mainAxisAlignment: MainAxisAlignment.spaceBetween,
                children: <Widget>[
                  Container(
                    child: Row(
                      mainAxisAlignment: MainAxisAlignment.start,
                      children: <Widget>[
                        Checkbox(
                            value: true,
                            activeColor: Theme.of(context).primaryColor,
                            onChanged: (bool newValue) {}),
                        Text("Remember me",
                            style: TextStyle(
                                fontSize: isSmallScreen
                                    ? 18
                                    : constraints.maxWidth * 0.018)),
                      ],
                    ),
                  ),
                  RaisedButton(
                    onPressed: () {
                      login(context, authProv);
                    },
                    textColor: Colors.white,
                    elevation: 0.0,
                    padding: const EdgeInsets.all(0.0),
                    shape: RoundedRectangleBorder(
                        borderRadius: BorderRadius.circular(10),
                        side:
                            BorderSide(width: 0.5, color: Hexcolor('#CCCCCC'))),
                    child: Container(
                      padding: const EdgeInsets.all(10.0),
                      height: 50,
                      width: 140,
                      child: Row(
                        mainAxisAlignment: MainAxisAlignment.spaceBetween,
                        children: <Widget>[
                          Text('LOG IN',
                              style: TextStyle(
                                  fontSize: isSmallScreen
                                      ? 20
                                      : constraints.maxWidth * 0.020)),
                          Image.asset('assets/images/login_btn_arrow_icon.png')
                        ],
                      ),
                    ),
                  )
                ],
              ),
            ],
          ),
        ),
      );
    });
  }

  login(context, AuthProvider authProv) {
    loginFormKey.currentState.validate();
    loginFormKey.currentState.save();
    authProv.login(userInfo).then((res) {
      if (res['MessageStatus'] == 1) {
        insertDeviceImei(res, authProv);
        // call insert imei
        // save imei on shared preferance
        // handel errors
      } else {
        // handel error
      }
      Navigator.of(context).pushNamed(HOME);
    }).catchError((err) {
      print('$err');
    });
  }

  insertDeviceImei(res, AuthProvider authProv) {
    var imeiInfo = {
      "IMEI": _platformImei.toString(),
      "LogInType": 1,
      "DoctorID": res['DoctorID'],
      "DoctorName": "Test User",
      "Gender": 1,
      "ClinicID": 3,
      "ProjectID": 15,
      "DoctorTitle": "Mr.",
      "ClinicName": "MED",
      "ProjectName": "",
      "DoctorImageURL": "UNKNOWN",
      "LogInTokenID": res['LogInTokenID'],
      "VersionID": 1.2
    };
    authProv.insertDeviceImei(imeiInfo).then((res) {
      if (res['MessageStatus'] == 1) {
        setSharedPref('platformImei', _platformImei);
        // save imei on shared preferance
      } else {
        // handel error
      }
    }).catchError((err) {
      print(err);
    });
  }

  // Platform messages are asynchronous, so we initialize in an async method.
  Future<void> initPlatformState() async {
    String platformImei;
    String idunique;
    // Platform messages may fail, so we use a try/catch PlatformException.
    try {
      platformImei =
          await ImeiPlugin.getImei(shouldShowRequestPermissionRationale: false);
      idunique = await ImeiPlugin.getId();
    } on PlatformException {
      platformImei = 'Failed to get platform version.';
    }

    // If the widget was removed from the tree while the asynchronous platform
    // message was in flight, we want to discard the reply rather than calling
    // setState to update our non-existent appearance.
    if (!mounted) return;

    setState(() {
      _platformImei = platformImei;
      uniqueId = idunique;
    });
  }

  Future<void> setSharedPref(key, value) async {
    Future<SharedPreferences> _prefs = SharedPreferences.getInstance();
    final SharedPreferences prefs = await _prefs;

    prefs.setInt(key, value).then((bool success) {
      return;
    });
  }

  getProjectsList() {
    ProjectsProvider projectsProv = Provider.of<ProjectsProvider>(context);
    projectsProv.getProjectsList().then((res) {
      if (res['MessageStatus'] == 1) {
        setState(() {
          projectsList = res['ListProject'];
        });
      } else {
        // handel error
      }
    }).catchError((err) {
      print(err);
    });
  }
}