adv_basics/lib/results_screen.dart

import 'package:flutter/material.dart';
import 'package:adv_basics/questions_summary.dart';
import 'package:adv_basics/data/questions.dart';
import 'package:google_fonts/google_fonts.dart';

class ResultsScreen extends StatelessWidget {
  const ResultsScreen({
    super.key,
    required this.chosenAnswers,
    required this.onRestartQuiz,
  });

  final List<String> chosenAnswers;
  final void Function() onRestartQuiz;

  List<Map<String, Object>> get summaryData {
    final List<Map<String, Object>> summary = [];

    for (var i = 0; i < chosenAnswers.length; i++) {
      summary.add(
        {
          'question_index': i,
          'question': questions[i].text,
          'correct_answer': questions[i].answers[0],
          'user_answer': chosenAnswers[i],
        },
      );
    }

    return summary;
  }

  @override
  Widget build(BuildContext context) {
    final numTotalQuestions = summaryData.length;
    final numCorrectQuestions = summaryData
        .where(
          (data) => data['user_answer'] == data['correct_answer'],
    )
        .length;

    return SizedBox(
      width: double.infinity,
      child: Container(
        margin: const EdgeInsets.all(40),
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            Text(
              'You answered $numCorrectQuestions out of $numTotalQuestions questions correctly!',
              style: GoogleFonts.lato(
                color: const Color.fromARGB(255, 201, 153, 251),
                fontSize: 24,
                fontWeight: FontWeight.bold,
              ),
              textAlign: TextAlign.center,
            ),
            const SizedBox(
              height: 30,
            ),
            QuestionsSummary(
              summaryData,
            ),
            const SizedBox(
              height: 30,
            ),
            OutlinedButton.icon(
              onPressed: onRestartQuiz,
              style: OutlinedButton.styleFrom(
                foregroundColor: Colors.white,
              ),
              icon: const Icon(Icons.update),
              label: const Text('Restart Quiz'),
            )
          ],
        ),
      ),
    );
  }
}