import 'dart:developer';

import 'package:flutter/material.dart';
import 'package:flutter_dotenv/flutter_dotenv.dart';
import 'package:gap/gap.dart';
import 'package:hashlib/hashlib.dart';
import 'package:ocbo_esign_validator/functions/get_api.dart';
import 'package:ocbo_esign_validator/widgets/box_widget.dart';
import 'package:ocbo_esign_validator/widgets/button_widget.dart';
import 'package:ocbo_esign_validator/widgets/image_widget.dart';
import 'package:ocbo_esign_validator/widgets/input_widget.dart';
import 'package:ocbo_esign_validator/widgets/text_widget.dart';

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

  @override
  State<LoginPage> createState() => _LoginPageState();
}

class _LoginPageState extends State<LoginPage> {
  final _passwordController = TextEditingController();
  final _approver = dotenv.env['HEAD']!;
  final _approverId = dotenv.env['HEADID']!;
  late ValueNotifier<String> passwordNotifier;

  @override
  void initState() {
    super.initState();
    passwordNotifier = ValueNotifier(_passwordController.text);
    _passwordController.addListener(() {
      passwordNotifier.value = _passwordController.text;
    });
  }

  Future<bool> _checkConnection() async {
    try {
      final connection = await getApi('check-connection', null, null);
      return connection["result"];
    } catch (e) {
      return false;
    }
  }

  Future<String> _getPassword(String employeeid) async {
    try {
      final response = await getApi('get-password', employeeid, null);
      return (response["result"]);
    } catch (e) {
      return "0";
    }
  }

  Future<String> _securePassword(String password) async {
    final firstHash = sha1.string(password);
    final secondHash = sha384.string(firstHash.toString());
    final thirdHash = sha1.string(secondHash.toString());

    return thirdHash.toString();
  }

  void _login() async {
    final connected = await _checkConnection();

    if (connected) {
      final employeeid = _approverId;
      final dbpassword = await _getPassword(employeeid);
      final hashPassword = await _securePassword(_passwordController.text);
      if (dbpassword == hashPassword) {
        log('yeah');
      } else {
        log('no');
      }
    }
  }

  void _ignoreButton() {}

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

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      resizeToAvoidBottomInset: false,
      body: Container(
        alignment: Alignment.center,
        height: MediaQuery.of(context).size.height,
        decoration: const BoxDecoration(
          gradient: LinearGradient(
            begin: Alignment.topCenter,
            end: Alignment.bottomCenter,
            colors: [
              Color.fromRGBO(39, 26, 47, 1),
              Color.fromRGBO(22, 33, 44, 1),
              Color.fromRGBO(22, 33, 44, 1),
              Color.fromRGBO(24, 45, 40, 1),
            ],
          ),
        ),
        child: Column(
          children: [
            const Gap(88),
            const ImageWidget(imagePath: 'assets/logo.png', size: 100, measureByHeight: true),
            const Gap(58),
            BoxWidget(
              title: 'Login',
              content: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  const TextWidget(text: 'Name', bold: true, size: 16),
                  const Gap(8),
                  TextWidget(text: _approver, bold: false, size: 16),
                  const Gap(16),
                  const TextWidget(text: 'Password', bold: true, size: 16),
                  const Gap(8),
                  InputWidget(controller: _passwordController, password: true),
                  const Gap(24),
                  ValueListenableBuilder<String>(
                    valueListenable: passwordNotifier,
                    builder: (context, password, child) {
                      return ButtonWidget(
                        text: password.isNotEmpty ? 'Login' : 'Required password',
                        onPressed: password.isNotEmpty ? _login : _ignoreButton,
                        disabled: password.isEmpty,
                      );
                    },
                  ),
                ],
              ),
            ),
          ],
        ),
      ),
    );
  }
}