home.dart

import 'package:flutter/material.dart';
import 'package:provider/provider.dart';

import 'dart:math';
import 'dart:async';

import '../provider/data.dart';
import '../utils/random_pick_category.dart';
import '../utils/random_pick_letter.dart';

class Home extends StatelessWidget {
  static const String id = 'home';

  String _randomLetter = '';
  String _randomCategory = '';
  Timer _timer;
  int _countdownStart = 10;

  Future<void> startMiniGame(Data myProvider) async {
    if (myProvider.countdown == 0) {
      pickCategory(myProvider);
      pickLetter(myProvider);
      startTimer(myProvider);
    }
  }

  Future<void> startTimer(Data myProvider) async {
    const oneSec = const Duration(seconds: 1);
    if (_timer != null) {
      dispose();
    }
    _countdownStart = 10;
    myProvider.updateCountdown = _countdownStart;
    _timer = new Timer.periodic(
      oneSec,
      (Timer timer) {
        if (_countdownStart == 0) {
          timer.cancel();
        } else {
          _countdownStart--;
          myProvider.updateCountdown = _countdownStart;
        }
      },
    );
  }

  @override
  void dispose() {
    _timer.cancel();
  }

  Future<void> pickCategory(Data myProvider) async {
    myProvider.searchingCategory = true;
    RandomPickCategory randomPickCategory;
    int attempts = 0;
    do {
      randomPickCategory = RandomPickCategory();
      await randomPickCategory.init();
      if (randomPickCategory.category != null) {
        myProvider.updateCategory = randomPickCategory.category;
        myProvider.searchingCategory = false;
        break;
      }
      attempts++;
    } while (attempts < 3);
  }

  Future<void> pickLetter(Data myProvider) async {
    myProvider.searchingLetter = true;
    RandomPickLetter randomPickLetter;