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

class Home extends StatefulWidget {
  @override
  _HomeState createState() => _HomeState();
}

class _HomeState extends State<Home> {
  String nis, nama, status;
  final _key = new GlobalKey<FormState>();

  _check() {
    final form = _key.currentState;
    if (form.validate()) {
      form.save();
      _submit();
    }
  }

  _submit() async {
    var urlPostman =
        "https://script.google.com/macros/s/AKfycbyZMw-4aNli_vfIucxNxAZvIfWOtWlQEBST8EtDh4zGcDnEHCA7/exec?action=insert&tableName=presensi&nis=1&nama=as&status=333";

    var url =
        'http://script.google.com/macros/s/AKfycbyZMw-4aNli_vfIucxNxAZvIfWOtWlQEBST8EtDh4zGcDnEHCA7';

    var queryParameters = {
      'action': 'insert',
      'tableName': 'presensi',
      'nis': nis,
      'nama': nama,
      'status': status
    };

    var uri = Uri.https(url, '/exec?', queryParameters);
    var response = await http.post(uri);
    print(response.body.toString());
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(),
      body: Form(
        key: _key,
        child: Container(
          padding: EdgeInsets.all(16.0),
          child: ListView(
            children: <Widget>[
              EditText(
                errorLabel: 'Please fill your fullname',
                label: 'NIS',
                onSaved: (a) => nis = a,
              ),
              SizedBox(
                height: 20.0,
              ),
              EditText(
                errorLabel: 'Please fill your nama address',
                label: 'Nama',
                onSaved: (a) => nama = a,
              ),
              SizedBox(
                height: 20.0,
              ),
              EditText(
                errorLabel: 'Please fill your status number',
                label: 'Status',
                onSaved: (a) => status = a,
              ),
              SizedBox(
                height: 20.0,
              ),
              SizedBox(
                height: 20.0,
              ),
              CustomButton(
                label: 'Submit',
                onPressed: () {
                  _check();
                },
              ),
            ],
          ),
        ),
      ),
    );
  }
}

class EditText extends StatelessWidget {
  final String label;
  final String errorLabel;
  final FormFieldSetter onSaved;
  EditText({this.onSaved, this.errorLabel, this.label});
  @override
  Widget build(BuildContext context) {
    return TextFormField(
      onSaved: onSaved,
      validator: (e) {
        if (e.isEmpty) {
          return errorLabel;
        }
      },
      keyboardType: TextInputType.text,
      decoration: InputDecoration(
          hintText: label,
          labelText: label,
          border:
              OutlineInputBorder(borderRadius: BorderRadius.circular(30.0))),
    );
  }
}

class CustomButton extends StatelessWidget {
  final VoidCallback onPressed;
  final String label;
  CustomButton({this.onPressed, this.label});
  @override
  Widget build(BuildContext context) {
    return Material(
      color: Colors.blue,
      borderRadius: BorderRadius.circular(30.0),
      child: MaterialButton(
        onPressed: onPressed,
        child: Text(
          label,
          style: TextStyle(color: Colors.white),
        ),
      ),
    );
  }
}