import 'dart:convert';

import 'package:flutter_login/flutter_login.dart';
import 'package:flutter/material.dart';
import 'package:google_fonts/google_fonts.dart';
import 'package:http/http.dart' as http;
import 'dart:convert' as convert;



//
//Still to add: 
//  Email verification, that the input has "@" and "."
//  Hash the passwords
//  Allow users to login
//  Verify password and confirm password match
//

class RegisterPage extends StatefulWidget{
  
  RegisterPage({Key key, this.title}) : super(key: key);
  final String title;

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

class _RegisterPageState extends State<RegisterPage> {
  // TextEditingController name = new TextEditingController();
  TextEditingController email = new TextEditingController();
  TextEditingController password = new TextEditingController() ;
  TextEditingController confirmpass = new TextEditingController();


  Future<List> send_data() async {


    var url = 'https://ada.uprrp.edu/~hector.sierra/FastMed/API/InsertUser.php';
    final data = await http.post(url, body: {
        "email": email.text,
        "password": password.text,
      });
    print(data.body);
    if("user not registered" == data.body){
      print("maybe we use this");
    }

  }

  bool _SamePass() {
    if (password.text == confirmpass.text) {
      return true;
    }
    else {
      return false;
    }
  }

  _Alerts(BuildContext context){

    TextEditingController msg = new TextEditingController();


   //
   //Useful code for adding pop up messages with animations
   //
   //

    // Navigator.of(context).push(
    //
    //   PageRouteBuilder(
    //       transitionDuration: Duration(seconds: 2),
    //       pageBuilder: (context, animation, secAnimation ) => AlertDialog(
    //         title: Text("Testing"),
    //         elevation: 1,
    //         backgroundColor: Colors.transparent,
    //
    //       ),
    //       opaque: false,
    //   )
    //
    // );

    showDialog<void>(
      context: context,
      barrierDismissible: false,
      barrierColor: Colors.transparent,

      builder: (BuildContext context){
        Future.delayed(Duration(seconds: 2), () {
          Navigator.of(context).pop(true);
        });

        return Material(
          color: Colors.transparent,
          child: InkResponse(
            child: Container(

              alignment: Alignment.bottomCenter,
              padding: EdgeInsets.only(bottom: 30),
              child: Text(
                  "Email address is already registered",
                  style: TextStyle(fontSize: 18, color: Colors.red),),

            ),
          )
        );

        // return Banner(
        //   location: BannerLocation.bottomEnd,
        //   message: "Hello there",
        //
        // );

        // // allows the message to disappear
        // Future.delayed(Duration(seconds: 2), () {
        //   Navigator.of(context).pop(true);
        // });
        // return AlertDialog(
        //   buttonPadding: ,
        //   title: Text("Testing"),
        //   elevation: 1,
        //   backgroundColor: Colors.transparent,
        // );
      }
    );
  }



  Widget _BackButton(BuildContext context) {
    return InkWell(
      onTap: () {
        Navigator.pop(context);
      },
      child: Row(
          children: <Widget>[
            Container(
              padding: EdgeInsets.only(left: 0, top: 10, bottom: 10),
              child: Icon(Icons.arrow_back_ios, color: Colors.black),
            ),
            Text("Back",
                style: TextStyle(fontSize: 14, fontWeight: FontWeight.w500))
          ]
      ),
    );
  }

  Widget _SubmitButton(BuildContext context) {
    return InkResponse(
      onTap: () {
        send_data();
        // _Alert(BuildContext);
        // _Match(context);
        _Alerts(context);
      },
      child: Material(
        borderRadius: BorderRadius.circular(30),
        elevation: 3,
        child: Container(
        padding: EdgeInsets.symmetric(vertical: 10),
        width: 250,
        alignment: Alignment.center,
        decoration: BoxDecoration(
          color: Colors.red,
          borderRadius: BorderRadius.circular(30),
        ),

        child: Text(
          "Submit",
          style: TextStyle(fontSize: 22, color: Colors.white),
        ),
        ),
      ),
    );
  }

    Widget _EntryField(String title, TextEditingController controller,
        {bool pass = false}) {
      return Container(
        padding: EdgeInsets.only(left: 0, top: 10, bottom: 10),
        child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,

            children: <Widget>[
              Text(
                title,
                style: TextStyle(fontWeight: FontWeight.bold, fontSize: 18),
              ),
              SizedBox(
                  height: 30
              ),
              TextField(
                controller: controller,
                obscureText: pass,
                decoration: InputDecoration(
                  border: (
                      UnderlineInputBorder()
                  ),
                ),
              )
            ]
        ),

      );
    }

    Widget _Fills() {
      return Column(
          children: <Widget>[
            _EntryField("Email", email),
            _EntryField("Password", password, pass: true),
            _EntryField("Confirm Password", confirmpass, pass: true)

          ]
      );
    }

//add column or stack
    @override
    Widget build(BuildContext context) {
      final height = MediaQuery
          .of(context)
          .size
          .height;
      return Scaffold(
          body: Container(
            height: height,
            child: Stack(

              children: <Widget>[
                Container(
                    padding: EdgeInsets.symmetric(horizontal: 20),
                    child: SingleChildScrollView(
                      child: Column(
                        crossAxisAlignment: CrossAxisAlignment.center,
                        mainAxisAlignment: MainAxisAlignment.center,
                        children: <Widget>[
                          // Text("Username", style: TextStyle(fontSize: 18.0),),
                          // TextField(
                          //   controller: name,
                          //   decoration: InputDecoration(
                          //       hintText: 'name'
                          //   ),
                          // ),
                          SizedBox(
                            height: 700,
                          ),
                          _Fills(),
                          //Add code to verify if password and confirm password match
                          SizedBox(
                            height: 20,
                          ),
                          _SubmitButton(context),
                          SizedBox(
                            height: 10,
                          ),
                          // ElevatedButton(
                          //     onPressed: send_data, child: Text("Register")),
                        ],
                      ),
                    )
                ),
                Positioned(
                  top: 15, left: 20, child: _BackButton(context),
                ),
              ],

            ),
          )
      );
    }
  }