game_pick_word.dart

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

import '../provider/data.dart';
import '../utils/random_pick_word.dart';
import '../utils/get_image_from_word.dart';

class GamePickWordPage extends StatelessWidget {
  int _count = 4;

  Future<void> startGame(BuildContext context, Data myProvider) async {
    myProvider.updateQuestionsCount = 0;
    myProvider.updateGoodAnswers = 0;
    myProvider.updateWrongAnswers = 0;
    await nextWord(context, myProvider);
  }

  Future<void> nextWord(BuildContext context, Data myProvider) async {
    await pickData(context, myProvider);
    myProvider.updateQuestionsCount = myProvider.questionsCount + 1;
  }

  Future<void> pickData(BuildContext context, Data myProvider) async {
    List words;
    List images;
    RandomPickWord randomPickWord;
    RandomPickImage randomPickImage;
    String word;

    int attempts = 0;
    do {
      randomPickWord = RandomPickWord();
      await randomPickWord.init(_count);

      if (randomPickWord.words != null) {
        words = randomPickWord.words;
        word = words.take(1).toList()[0];
        randomPickImage = RandomPickImage();
        await randomPickImage.init(word, _count);
        if (randomPickImage.images != null) {
          images = randomPickImage.images;
          break;
        }
      }
      attempts++;
    } while (attempts < 3);

    if (
      ((words != null) && (words.length == _count))
      &&
      ((images != null) && (images.length == _count))
    ) {
      myProvider.updateWord = word;
      myProvider.updateOtherWords = words.skip(1).toList();
      myProvider.updateImages = images;
    }
  }

  Future<void> checkWord(BuildContext context, Data myProvider, word) async {
    if (myProvider.word == word) {
      myProvider.updateGoodAnswers = myProvider.goodAnswers + 1;
      nextWord(context, myProvider);
    } else {
      myProvider.updateWrongAnswers = myProvider.wrongAnswers + 1;
    }
  }

  Container _buildScoreContainer(BuildContext context, Data myProvider) {
    String score = ''
      + '❓ ' + myProvider.questionsCount.toString()
      + ' - '
      + '☺️ ' + myProvider.goodAnswers.toString()
      + ' - '
      + '😟 ' + myProvider.wrongAnswers.toString()
      ;

    return Container(
      padding: EdgeInsets.all(5),
      child: Text(
        score,
        style: TextStyle(
          fontSize: 20,
          fontWeight: FontWeight.w400,
          color: Colors.black,
        ),
      ),
    );
  }

  Container _buildImageContainer(String image, Color color) {
    String imageAsset = 'assets/placeholder.png';
    if (image != null) {
        imageAsset = 'assets/images/'+image;
    }

    return Container(
      padding: EdgeInsets.all(5),
      child: FlatButton(
        color: Colors.teal,
        child: Image(image: AssetImage(imageAsset)),
      ),
    );
  }

  Column _buildImageItemsBlock(List images) {
    Color color = Colors.black;

    if ((images == null) || (images.length != _count)) {
      return Column();
    }

    return Column(
      mainAxisSize: MainAxisSize.min,
      mainAxisAlignment: MainAxisAlignment.center,
      children: [
        Row(
          mainAxisSize: MainAxisSize.min,
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            _buildImageContainer(images[0], color),
            _buildImageContainer(images[1], color),
          ],
        ),
        Row(
          mainAxisSize: MainAxisSize.min,
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            _buildImageContainer(images[2], color),
            _buildImageContainer(images[3], color),
          ],
        )
      ],
    );
  }

  Container _buildTextContainer(BuildContext context, Data myProvider, String word, Color color) {
    return Container(
      child: RaisedButton(
        color: Colors.green,
        padding: EdgeInsets.all(15),
        child: Text(
          word != null ? word : '',
          style: TextStyle(
            fontSize: 20,
            fontWeight: FontWeight.w400,
            color: color,
          ),
        ),
        onPressed: () { checkWord(context, myProvider, word); },
      ),
    );
  }

  Column _buildTextItemsBlock(BuildContext context, Data myProvider, String word, List otherWords) {
    Color color = Colors.white;

    if ((word == null) || (otherWords.length != (_count - 1))) {
      return Column();
    }

    List words = [
      word,
      otherWords.length > 0 ? otherWords[0] : null,
      otherWords.length > 1 ? otherWords[1] : null,
      otherWords.length > 2 ? otherWords[2] : null,
    ];

    words.sort();

    return Column(
      mainAxisSize: MainAxisSize.min,
      mainAxisAlignment: MainAxisAlignment.center,
      children: [
        Row(
          mainAxisSize: MainAxisSize.min,
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            _buildTextContainer(context, myProvider, words[0], color),
            SizedBox(width: 10),
            _buildTextContainer(context, myProvider, words[1], color),
          ],
        ),
        SizedBox(height: 10),
        Row(
          mainAxisSize: MainAxisSize.min,
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            _buildTextContainer(context, myProvider, words[2], color),
            SizedBox(width: 10),
            _buildTextContainer(context, myProvider, words[3], color),
          ],
        )
      ],
    );
  }

  Row _buildStartGameButton(BuildContext context, Data myProvider) {
    return Row(
      mainAxisSize: MainAxisSize.min,
      mainAxisAlignment: MainAxisAlignment.center,
      children: [
        Container(
          child: RaisedButton(
            color: Colors.orange,
            padding: EdgeInsets.all(35),
            child: Text(
              "🔀",
              style: TextStyle(
                fontSize: 60,
                fontWeight: FontWeight.w600,
                color: Colors.black,
              ),
            ),
            onPressed: () => startGame(context, myProvider),
          ),
        )
      ],
    );
  }

  @override
  Widget build(BuildContext context) {
    Data _myProvider = Provider.of<Data>(context);

    return Scaffold(
      appBar: AppBar(
        elevation: 0,
      ),
      backgroundColor: Colors.blue,
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.spaceEvenly,
          crossAxisAlignment: CrossAxisAlignment.center,
          mainAxisSize: MainAxisSize.max,
          children: <Widget>[
            _buildImageItemsBlock(_myProvider.images),
            SizedBox(height: 5),
            _buildScoreContainer(context, _myProvider),
            ((_myProvider.word == null) || (_myProvider.word == '')) ?
            _buildStartGameButton(context, _myProvider) :
            SizedBox(height: 5),
            _buildTextItemsBlock(context, _myProvider, _myProvider.word, _myProvider.otherWords),
          ],
        ),
      ),
    );
  }
}