welcome page

class WelcomePageState extends StatefulWidget {
  @override
  WelcomePage createState() => WelcomePage();
}

class WelcomePage extends State<WelcomePageState> {
  Widget scaffoldBody;

  @override
  Widget build(BuildContext context) {
    return Consumer<UserProvider>(
      builder: (BuildContext context, UserProvider userp, _) => Scaffold(
        appBar: AppBar(
          backgroundColor: Color.fromARGB(255, 98, 235, 248),
          title: Text(
            'My AirBNB',
            style: TextStyle(color: Colors.black),
          ),
          centerTitle: true,
          elevation: 0,
        ),
        body: scaffoldBody,
        drawer: Drawer(
          child: Container(
            constraints: BoxConstraints.expand(),
            decoration: BoxDecoration(
              gradient: LinearGradient(
                begin: Alignment(0.31089, 1.09827),
                end: Alignment(0.68911, -0.09827),
                stops: [
                  0,
                  1,
                ],
                colors: [
                  Color.fromARGB(255, 140, 28, 140),
                  Color.fromARGB(255, 98, 235, 248),
                ],
              ),
            ),
            child: Column(
              children: <Widget>[
                UserAccountsDrawerHeader(
                  decoration: BoxDecoration(
                    color: Color.fromARGB(255, 255, 255, 255),
                  ),
                  currentAccountPicture: userp.user_name != null
                      ? Image.memory(base64Decode(userp.user_name.image))
                      : Text(''),
                  accountName: userp.user_name != null
                      ? Text(
                          '${userp.user_name.name} ${userp.user_name.surname}',
                          style: TextStyle(color: Colors.black))
                      : Text(''),
                  accountEmail: userp.user_name != null
                      ? Text('${userp.user_name.email}',
                          style: TextStyle(color: Colors.black))
                      : Text(''),
                ),
                FlatButton(
                  onPressed: () {
                    onTappedAddProp();
                    Navigator.pop(context);
                  },
                  child: Row(
                    mainAxisAlignment: MainAxisAlignment.spaceBetween,
                    children: <Widget>[
                      Text(
                        'Add a proposal',
                        style: TextStyle(
                          color: Colors.black,
                        ),
                      ),
                      Icon(
                        Icons.add,
                        color: Colors.black,
                      )
                    ],
                  ),
                ),
                Divider(
                  color: Colors.black,
                ),
                FlatButton(
                  onPressed: () {
                    onTappedEditProp();
                    Navigator.pop(context);
                  },
                  child: Row(
                    mainAxisAlignment: MainAxisAlignment.spaceBetween,
                    children: <Widget>[
                      Text(
                        'Edit a proposal',
                        style: TextStyle(
                          color: Colors.black,
                        ),
                      ),
                      Icon(
                        Icons.edit,
                        color: Colors.black,
                      )
                    ],
                  ),
                ),
                Divider(
                  color: Colors.black,
                ),
                FlatButton(
                  onPressed: () {},
                  child: Row(
                    mainAxisAlignment: MainAxisAlignment.spaceBetween,
                    children: <Widget>[
                      Text(
                        'Delete a proposal',
                        style: TextStyle(
                          color: Colors.black,
                        ),
                      ),
                      Icon(
                        Icons.delete,
                        color: Colors.black,
                      )
                    ],
                  ),
                ),
                Divider(
                  color: Colors.black,
                ),
                FlatButton(
                  onPressed: () {},
                  child: Row(
                    mainAxisAlignment: MainAxisAlignment.spaceBetween,
                    children: <Widget>[
                      Text(
                        'See notifications',
                        style: TextStyle(
                          color: Colors.black,
                        ),
                      ),
                      Icon(
                        Icons.notifications,
                        color: Colors.black,
                      )
                    ],
                  ),
                ),
                Divider(
                  color: Colors.black,
                ),
                FlatButton(
                  onPressed: () {
                    AddProposalPage().onTappedAddFeed();
                    Navigator.pop(context);
                  },
                  child: Row(
                    mainAxisAlignment: MainAxisAlignment.spaceBetween,
                    children: <Widget>[
                      Text(
                        'Add a feedback',
                        style: TextStyle(
                          color: Colors.black,
                        ),
                      ),
                      Icon(
                        Icons.feedback,
                        color: Colors.black,
                      )
                    ],
                  ),
                ),
                Divider(
                  color: Colors.black,
                ),
                Spacer(),
                FlatButton(
                  onPressed: () {
                    Navigator.pushReplacementNamed(context, '/login');
                  },
                  child: Row(
                    mainAxisAlignment: MainAxisAlignment.spaceBetween,
                    children: <Widget>[
                      Text(
                        'LOGOUT',
                        style: TextStyle(
                          color: Colors.black,
                        ),
                      ),
                      Icon(
                        Icons.exit_to_app,
                        color: Colors.black,
                      )
                    ],
                  ),
                ),
              ],
            ),
          ),
        ),
      ),
    );
  }

  @override
  void initState() {
    // Initializing it with the first body we want visible.
    scaffoldBody = Consumer<UserProvider>(
        builder: (BuildContext context, UserProvider userp, _) => Container(
              constraints: BoxConstraints.expand(),
              decoration: BoxDecoration(
                gradient: LinearGradient(
                  begin: Alignment(0.31089, 1.09827),
                  end: Alignment(0.68911, -0.09827),
                  stops: [
                    0,
                    1,
                  ],
                  colors: [
                    Color.fromARGB(255, 140, 28, 140),
                    Color.fromARGB(255, 98, 235, 248),
                  ],
                ),
              ),
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.stretch,
                children: <Widget>[
                  Align(
                    alignment: Alignment.topCenter,
                    child: Container(
                      margin: EdgeInsets.only(top: 50),
                      child: userp.user_name != null
                          ? Text(
                              "Welcome in myAirBNB ${userp.user_name.name} ${userp.user_name.surname}",
                              textAlign: TextAlign.center,
                              style: TextStyle(
                                color: Color.fromARGB(255, 255, 255, 255),
                                fontFamily: "Lato",
                                fontWeight: FontWeight.w400,
                                fontSize: 35,
                                letterSpacing: -1,
                              ),
                            )
                          : CircularProgressIndicator(),
                    ),
                  ),
                ],
              ),
            ));
  }

  void onTappedAddProp() {
    // Calling setState changing the body
    setState(() {
      scaffoldBody = Consumer<UserProvider>(
          builder: (BuildContext context, UserProvider userp, _) => Container(
                constraints: BoxConstraints.expand(),
                decoration: BoxDecoration(
                  gradient: LinearGradient(
                    begin: Alignment(0.31089, 1.09827),
                    end: Alignment(0.68911, -0.09827),
                    stops: [
                      0,
                      1,
                    ],
                    colors: [
                      Color.fromARGB(255, 140, 28, 140),
                      Color.fromARGB(255, 98, 235, 248),
                    ],
                  ),
                ),
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.stretch,
                  children: <Widget>[
                    Align(
                      alignment: Alignment.topCenter,
                      child: Container(
                        margin: EdgeInsets.only(top: 50),
                        child: userp.user_name != null
                            ? Text(
                                "add proposal",
                                textAlign: TextAlign.center,
                                style: TextStyle(
                                  color: Color.fromARGB(255, 255, 255, 255),
                                  fontFamily: "Lato",
                                  fontWeight: FontWeight.w400,
                                  fontSize: 35,
                                  letterSpacing: -1,
                                ),
                              )
                            : CircularProgressIndicator(),
                      ),
                    ),
                  ],
                ),
              ));
    });
  }

  void onTappedEditProp() {
    // Calling setState changing the body
    setState(() {
      scaffoldBody = Consumer<UserProvider>(
          builder: (BuildContext context, UserProvider userp, _) => Container(
                constraints: BoxConstraints.expand(),
                decoration: BoxDecoration(
                  gradient: LinearGradient(
                    begin: Alignment(0.31089, 1.09827),
                    end: Alignment(0.68911, -0.09827),
                    stops: [
                      0,
                      1,
                    ],
                    colors: [
                      Color.fromARGB(255, 140, 28, 140),
                      Color.fromARGB(255, 98, 235, 248),
                    ],
                  ),
                ),
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.stretch,
                  children: <Widget>[
                    Align(
                      alignment: Alignment.topCenter,
                      child: Container(
                        margin: EdgeInsets.only(top: 50),
                        child: userp.user_name != null
                            ? Text(
                                "edit proposal",
                                textAlign: TextAlign.center,
                                style: TextStyle(
                                  color: Color.fromARGB(255, 255, 255, 255),
                                  fontFamily: "Lato",
                                  fontWeight: FontWeight.w400,
                                  fontSize: 35,
                                  letterSpacing: -1,
                                ),
                              )
                            : CircularProgressIndicator(),
                      ),
                    ),
                  ],
                ),
              ));
    });
  }
}