doctor_app_flutter/lib/widgets/auth/login_form.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 '../../config/size_config.dart';
import '../../models/user_model.dart';
import '../../providers/auth_provider.dart';
import '../../providers/projects_provider.dart';
import '../../routes.dart';
import '../../util/dr_app_shared_pref.dart';
import '../../util/dr_app_toast_msg.dart';

DrAppSharedPreferances sharedPref = DrAppSharedPreferances();
DrAppToastMsg toastMsg = DrAppToastMsg();

class LoginForm extends StatefulWidget with DrAppToastMsg {
  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 Form(
      key: loginFormKey,
      child: Container(
        width: SizeConfig.widthMultiplier * 90,
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: <Widget>[
            buildSizedBox(),
            TextFormField(
              keyboardType: TextInputType.number,
              decoration: InputDecoration(
                  prefixIcon: Image.asset('assets/images/user_id_icon.png'),
                  hintText: 'Enter ID',
                  hintStyle: TextStyle(fontSize: 2 * SizeConfig.textMultiplier),
                  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 your ID';
                }
                return null;
              },
              onSaved: (value) {
                userInfo.UserID = value;
              },
            ),
            buildSizedBox(),
            TextFormField(
                obscureText: true,
                decoration: InputDecoration(
                    prefixIcon: Image.asset('assets/images/password_icon.png'),
                    hintText: 'Enter Password',
                    hintStyle:
                        TextStyle(fontSize: 2 * SizeConfig.textMultiplier),
                    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 your Password';
                  }
                  return null;
                },
                onSaved: (value) {
                  userInfo.Password = value;
                }),
            buildSizedBox(),
            DropdownButtonFormField(
                value: userInfo.ProjectID,
                isExpanded: false,
                decoration: InputDecoration(
                    contentPadding: EdgeInsets.all(10),
                    isDense: true,
                    prefixIcon: Image.asset('assets/images/hospital_icon.png'),
                    // hintText: 'Enter Password',
                    hintStyle:
                        TextStyle(fontSize: 2 * SizeConfig.textMultiplier),
                    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) {
                  print(value);
                  if (value == null) {
                    return 'Please select your project';
                  }
                  return null;
                },
                items: projectsList.map((item) {
                  return DropdownMenuItem(
                    child: Text(
                      '${item['Desciption']}',
                    ),
                    value: item['ID'],
                  );
                }).toList(),
                onChanged: (value) {
                  print(value);
                  setState(() {
                    userInfo.ProjectID = value;
                  });
                }),
            buildSizedBox(),
            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: 2 * SizeConfig.textMultiplier)),
                    ],
                  ),
                ),
                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: SizeConfig.widthMultiplier * 30,
                    child: Row(
                      mainAxisAlignment: MainAxisAlignment.spaceBetween,
                      children: <Widget>[
                        Text('LOGIN',
                            style: TextStyle(
                                fontSize: SizeConfig.isMobilePortrait
                                    ? 2.3 * SizeConfig.textMultiplier
                                    : 2.3 * SizeConfig.textMultiplier)),
                        Image.asset('assets/images/login_btn_arrow_icon.png')
                      ],
                    ),
                  ),
                )
              ],
            ),
          ],
        ),
      ),
    );
  }

  SizedBox buildSizedBox() {
    return SizedBox(
      height: 20,
    );
  }

  login(context, AuthProvider authProv) {
    if (loginFormKey.currentState.validate()) {
      loginFormKey.currentState.save();
      authProv.login(userInfo).then((res) {
        if (res['MessageStatus'] == 1) {
          insertDeviceImei(res, authProv);
        } else {
          // handel error
          // widget.showCenterShortLoadingToast("watting");
          showLoginError(res['ErrorEndUserMessage']);
        }
        // Navigator.of(context).pushNamed(HOME);
      }).catchError((err) {
        print('$err');
        showLoginError();
      });
    }
  }

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

  // 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 {
    sharedPref.setString(key, value).then((success) {
      print("sharedPref.setString" + success.toString());
    });
  }

  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);
    });
  }

  showLoginError([msg = null]) {
    String localMsg = 'Something wrong happened, please contact the admin';

    if (msg != null) {
      localMsg = msg.toString();
    }

    toastMsg.showErrorToast(localMsg);
  }

  saveObjToString(String key, value) async {
    sharedPref.setObj(key, value);
  }
}