import 'package:flutter/material.dart';
import 'package:instruction_app/screens/home_page.dart';

class AuthorizationPage extends StatefulWidget {
  const AuthorizationPage({super.key});

  @override
  State<AuthorizationPage> createState() => _AuthorizationPage();
}

class _AuthorizationPage extends State<AuthorizationPage> {
  final TextEditingController _loginController = new TextEditingController();
  final TextEditingController _passwordController = new TextEditingController();
  final borederRadius = BorderRadius.all(Radius.circular(10));
  bool passwordVisible = false;

  void _login(){
    final String login = _loginController.text;
    final String password  = _passwordController.text;

    if (login == 'admin' && password == '123456') {
      Navigator.of(context).push(MaterialPageRoute(
        builder: (ctx) => HomePage())
      );
    }
  }

  @override
  void dispose() {
    super.dispose();
    _loginController.dispose();
    _passwordController.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text("Авторизация"),
      ),
      body: Padding(
        padding: EdgeInsets.all(80),
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          crossAxisAlignment: CrossAxisAlignment.center,
          children: [
            _buildFormWidget(context),
            SizedBox(height: 25,),
            TextButton(
              style: ButtonStyle(
                backgroundColor: WidgetStateProperty.all(Colors.blue),
                foregroundColor: WidgetStateProperty.all(Colors.white),
                ),
              onPressed: () => _login(), 
              child: Text("Войти") 
              )
          ],
        )
      )
    );
  }

  Widget _buildFormWidget(BuildContext context) {
    return Column(
        children: [
          TextField(
            controller: _loginController,
            decoration: InputDecoration(
              prefixIcon: Icon(Icons.account_circle),
              border: OutlineInputBorder(
                borderRadius: borederRadius
              ), 
              labelText: 'Логин'
              )
        ),
          SizedBox(height: 25,),
          TextField(
            controller: _passwordController,
            obscureText: !passwordVisible,
            decoration: InputDecoration(
              prefixIcon: Icon(Icons.lock),
              border: OutlineInputBorder(
                borderRadius: borederRadius
              ), 
              labelText: 'Пароль',
              suffixIcon: IconButton(
                icon: Icon(
                  passwordVisible ? Icons.visibility : Icons.visibility_off
                  ),
              onPressed: () {
                setState(() {
                  passwordVisible = !passwordVisible;
                });
              }
            )
            )
        ),
        ],
      );
  }
}