import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:font_awesome_flutter/font_awesome_flutter.dart';
import 'package:provider/provider.dart';
import 'package:fcs/model/language_model.dart';
import 'package:fcs/model/user_model.dart';
import 'package:fcs/vo/user.dart';
import 'package:fcs/widget/local_text.dart';
import 'package:fcs/widget/localization/app_translations.dart';
import 'package:fcs/widget/progress.dart';

import '../theme/theme.dart' as Theme;
import 'util.dart';

class ChangePassword extends StatefulWidget {
  final User user;
  ChangePassword(
    this.user, {
    Key key,
  }) : super(key: key);

  @override
  _ChangePasswordState createState() => new _ChangePasswordState();
}

class _ChangePasswordState extends State<ChangePassword>
    with SingleTickerProviderStateMixin {
  final GlobalKey<ScaffoldState> _scaffoldKey = new GlobalKey<ScaffoldState>();

  final FocusNode myFocusNodePassword = FocusNode();
  final FocusNode myFocusNodeEmail = FocusNode();

  bool _obscureTextLogin = true;
  bool _obscureTextSignup = true;
  bool _obscureTextSignupConfirm = true;

  TextEditingController _smsController = new TextEditingController();
  TextEditingController _passwordController = new TextEditingController();
  TextEditingController _confirmPasswordController =
      new TextEditingController();
  final formKey = GlobalKey<FormState>();
  bool _isLoading = false;

  @override
  Widget build(BuildContext context) {
    return LocalProgress(
      inAsyncCall: _isLoading,
      child: Scaffold(
        key: _scaffoldKey,
        body: SingleChildScrollView(
          child: Container(
            width: MediaQuery.of(context).size.width,
            height: MediaQuery.of(context).size.height >= 775.0
                ? MediaQuery.of(context).size.height
                : 580.0,
            child: Column(
              mainAxisSize: MainAxisSize.max,
              children: <Widget>[
                Padding(
                  padding: EdgeInsets.only(top: 35.0, bottom: 10),
                  child: ListTile(
                    leading: IconButton(
                      icon: Icon(Icons.arrow_back),
                      onPressed: () {
                        Navigator.of(context).pop();
                      },
                    ),
                    title: LocalText(
                      context,
                      'change.password.title',
                      color: Colors.black87,
                      fontSize: 17,
                    ),
                  ),
                ),
                Expanded(
                  flex: 2,
                  child: PageView(
                    children: <Widget>[
                      new ConstrainedBox(
                        constraints: const BoxConstraints.expand(),
                        child: _buildReset(context),
                      ),
                    ],
                  ),
                ),
              ],
            ),
          ),
        ),
      ),
    );
  }

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

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

    // SystemChrome.setPreferredOrientations([
    //   DeviceOrientation.portraitUp,
    //   DeviceOrientation.portraitDown,
    // ]);

    _smsController.text = "";
  }

  Widget _buildReset(BuildContext context) {
    return Container(
      child: ListView(
        children: <Widget>[
          Column(
            children: <Widget>[
              Form(
                key: formKey,
                child: Card(
                  elevation: 2.0,
                  color: Colors.white,
                  shape: RoundedRectangleBorder(
                    borderRadius: BorderRadius.circular(8.0),
                  ),
                  child: Container(
                    width: 300.0,
                    child: Column(
                      children: <Widget>[
                        Padding(
                          padding: EdgeInsets.only(left: 25.0, right: 25.0),
                          child: TextFormField(
                            focusNode: myFocusNodePassword,
                            controller: _passwordController,
                            obscureText: _obscureTextSignup,
                            style: TextStyle(
                                fontFamily: "WorkSansSemiBold",
                                fontSize: 16.0,
                                color: Colors.black),
                            decoration: InputDecoration(
                              border: InputBorder.none,
                              icon: Icon(
                                FontAwesomeIcons.lock,
                                color: Colors.black,
                              ),
                              labelText: AppTranslations.of(context)
                                  .text("login.password"),
                              labelStyle:
                                  Provider.of<LanguageModel>(context).isEng
                                      ? TextStyle(
                                          fontFamily: "WorkSansSemiBold",
                                          color: Colors.grey)
                                      : TextStyle(
                                          fontFamily: "MyanmarUnicode",
                                          color: Colors.grey),
                              suffixIcon: GestureDetector(
                                onTap: _toggleSignup,
                                child: Icon(
                                  _obscureTextSignup
                                      ? FontAwesomeIcons.eye
                                      : FontAwesomeIcons.eyeSlash,
                                  size: 15.0,
                                  color: Colors.black,
                                ),
                              ),
                            ),
                            validator: _validatePassword,
                          ),
                        ),
                        Container(
                          width: 250.0,
                          height: 1.0,
                          color: Colors.grey[400],
                        ),
                        Padding(
                          padding: EdgeInsets.only(left: 25.0, right: 25.0),
                          child: TextFormField(
                            controller: _confirmPasswordController,
                            obscureText: _obscureTextSignupConfirm,
                            style: TextStyle(
                                fontFamily: "WorkSansSemiBold",
                                fontSize: 16.0,
                                color: Colors.black),
                            decoration: InputDecoration(
                              border: InputBorder.none,
                              icon: Icon(
                                FontAwesomeIcons.lock,
                                color: Colors.black,
                              ),
                              labelText: AppTranslations.of(context)
                                  .text("login.confirm_password"),
                              labelStyle:
                                  Provider.of<LanguageModel>(context).isEng
                                      ? TextStyle(
                                          fontFamily: "WorkSansSemiBold",
                                          color: Colors.grey)
                                      : TextStyle(
                                          fontFamily: "MyanmarUnicode",
                                          color: Colors.grey),
                              suffixIcon: GestureDetector(
                                onTap: _toggleSignupConfirm,
                                child: Icon(
                                  _obscureTextSignupConfirm
                                      ? FontAwesomeIcons.eye
                                      : FontAwesomeIcons.eyeSlash,
                                  size: 15.0,
                                  color: Colors.black,
                                ),
                              ),
                            ),
                            validator: _validateConfirmPassword,
                          ),
                        ),
                      ],
                    ),
                  ),
                ),
              ),
              SizedBox(
                height: 15,
              ),
              Container(
                // margin: EdgeInsets.only(top: 320.0),
                decoration: new BoxDecoration(
                  borderRadius: BorderRadius.all(Radius.circular(5.0)),
                  color: Theme.primaryColor,
                ),
                child: MaterialButton(
                    highlightColor: Colors.transparent,
                    splashColor: Theme.LoginColors.loginGradientEnd,
                    //shape: RoundedRectangleBorder(borderRadius: BorderRadius.all(Radius.circular(5.0))),
                    child: Padding(
                      padding: const EdgeInsets.symmetric(
                          vertical: 10.0, horizontal: 42.0),
                      child: LocalText(
                        context,
                        'change',
                        color: Colors.white,
                        fontSize: 18.0,
                      ),
                    ),
                    onPressed: () => _change(context)),
              ),
            ],
          ),
        ],
      ),
    );
  }

  void _toggleLogin() {
    setState(() {
      _obscureTextLogin = !_obscureTextLogin;
    });
  }

  void _toggleSignup() {
    setState(() {
      _obscureTextSignup = !_obscureTextSignup;
    });
  }

  void _toggleSignupConfirm() {
    setState(() {
      _obscureTextSignupConfirm = !_obscureTextSignupConfirm;
    });
  }

  void _change(BuildContext context) async {
    if (!formKey.currentState.validate()) {
      return;
    }
    var password = _passwordController.text;

    setState(() {
      _isLoading = true;
    });

    UserModel userModel = Provider.of<UserModel>(context);
    try {
      await userModel.changePassword(widget.user.phoneNumber, password);
      Navigator.pop(context);
    } catch (e) {
      showMsgDialog(context, "Error", e.toString());
    } finally {
      Future.delayed(Duration(seconds: 1), () {
        if (mounted) {
          setState(() {
            _isLoading = false;
          });
        }
      });
    }
  }

  String _validatePassword(value) {
    if (value.isEmpty) {
      return AppTranslations.of(context).text("login.password_empty");
    }
    if (value.length < 6) {
      return AppTranslations.of(context).text("login.password_size");
    }
    return null;
  }

  String _validateConfirmPassword(value) {
    if (value.isEmpty) {
      return AppTranslations.of(context).text("login.password_empty");
    }
    if (value.length < 6) {
      return AppTranslations.of(context).text("login.password_size");
    }
    if (value != _passwordController.text) {
      return AppTranslations.of(context).text("login.password_mismatch");
    }
    return null;
  }
}