import 'package:practice_engine/practice_engine.dart';

/// Default deck with 20 general knowledge questions for practice.
class DefaultDeck {
  static Deck get deck {
    const config = DeckConfig(
      requiredConsecutiveCorrect: 3,
      defaultAttemptSize: 10,
      priorityIncreaseOnIncorrect: 5,
      priorityDecreaseOnCorrect: 2,
      immediateFeedbackEnabled: true,
    );

    final questions = [
      Question(
        id: 'gk_1',
        prompt: 'What is the capital city of Australia?',
        answers: ['Sydney', 'Melbourne', 'Canberra', 'Perth'],
        correctAnswerIndices: [2],
      ),
      Question(
        id: 'gk_2',
        prompt: 'Which planet is known as the Red Planet?',
        answers: ['Venus', 'Mars', 'Jupiter', 'Saturn'],
        correctAnswerIndices: [1],
      ),
      Question(
        id: 'gk_3',
        prompt: 'What is the largest ocean on Earth?',
        answers: ['Atlantic Ocean', 'Indian Ocean', 'Arctic Ocean', 'Pacific Ocean'],
        correctAnswerIndices: [3],
      ),
      Question(
        id: 'gk_4',
        prompt: 'Who wrote the novel "1984"?',
        answers: ['George Orwell', 'Aldous Huxley', 'Ray Bradbury', 'J.D. Salinger'],
        correctAnswerIndices: [0],
      ),
      Question(
        id: 'gk_5',
        prompt: 'What is the chemical symbol for gold?',
        answers: ['Go', 'Gd', 'Au', 'Ag'],
        correctAnswerIndices: [2],
      ),
      Question(
        id: 'gk_6',
        prompt: 'In which year did World War II end?',
        answers: ['1943', '1944', '1945', '1946'],
        correctAnswerIndices: [2],
      ),
      Question(
        id: 'gk_7',
        prompt: 'What is the smallest prime number?',
        answers: ['0', '1', '2', '3'],
        correctAnswerIndices: [2],
      ),
      Question(
        id: 'gk_8',
        prompt: 'Which gas makes up approximately 78% of Earth\'s atmosphere?',
        answers: ['Oxygen', 'Carbon Dioxide', 'Nitrogen', 'Argon'],
        correctAnswerIndices: [2],
      ),
      Question(
        id: 'gk_9',
        prompt: 'What is the longest river in the world?',
        answers: ['Amazon River', 'Nile River', 'Yangtze River', 'Mississippi River'],
        correctAnswerIndices: [1],
      ),
      Question(
        id: 'gk_10',
        prompt: 'Who painted the Mona Lisa?',
        answers: ['Vincent van Gogh', 'Pablo Picasso', 'Leonardo da Vinci', 'Michelangelo'],
        correctAnswerIndices: [2],
      ),
      Question(
        id: 'gk_11',
        prompt: 'What is the speed of light in a vacuum (approximately)?',
        answers: ['300,000 km/s', '150,000 km/s', '450,000 km/s', '600,000 km/s'],
        correctAnswerIndices: [0],
      ),
      Question(
        id: 'gk_12',
        prompt: 'Which country is home to the kangaroo?',
        answers: ['New Zealand', 'Australia', 'South Africa', 'Brazil'],
        correctAnswerIndices: [1],
      ),
      Question(
        id: 'gk_13',
        prompt: 'What is the hardest natural substance on Earth?',
        answers: ['Gold', 'Diamond', 'Platinum', 'Titanium'],
        correctAnswerIndices: [1],
      ),
      Question(
        id: 'gk_14',
        prompt: 'How many continents are there on Earth?',
        answers: ['5', '6', '7', '8'],
        correctAnswerIndices: [2],
      ),
      Question(
        id: 'gk_15',
        prompt: 'What is the largest mammal in the world?',
        answers: ['African Elephant', 'Blue Whale', 'Giraffe', 'Polar Bear'],
        correctAnswerIndices: [1],
      ),
      Question(
        id: 'gk_16',
        prompt: 'In which city is the Eiffel Tower located?',
        answers: ['London', 'Berlin', 'Paris', 'Rome'],
        correctAnswerIndices: [2],
      ),
      Question(
        id: 'gk_17',
        prompt: 'What is the square root of 64?',
        answers: ['6', '7', '8', '9'],
        correctAnswerIndices: [2],
      ),
      Question(
        id: 'gk_18',
        prompt: 'Which element has the atomic number 1?',
        answers: ['Helium', 'Hydrogen', 'Lithium', 'Carbon'],
        correctAnswerIndices: [1],
      ),
      Question(
        id: 'gk_19',
        prompt: 'What is the largest desert in the world?',
        answers: ['Gobi Desert', 'Sahara Desert', 'Antarctic Desert', 'Arabian Desert'],
        correctAnswerIndices: [2],
      ),
      Question(
        id: 'gk_20',
        prompt: 'Who invented the telephone?',
        answers: ['Thomas Edison', 'Alexander Graham Bell', 'Nikola Tesla', 'Guglielmo Marconi'],
        correctAnswerIndices: [1],
      ),
    ];

    return Deck(
      id: 'default-general-knowledge',
      title: 'General Knowledge Quiz',
      description: 'A collection of 20 general knowledge questions covering science, geography, history, and more. Perfect for testing your knowledge!',
      questions: questions,
      config: config,
    );
  }

  /// Default deck with mock attempt history and progress data
  static Deck get deckWithMockData {
    const config = DeckConfig(
      requiredConsecutiveCorrect: 3,
      defaultAttemptSize: 10,
      priorityIncreaseOnIncorrect: 5,
      priorityDecreaseOnCorrect: 2,
      immediateFeedbackEnabled: true,
    );

    final now = DateTime.now();
    
    // Create mock attempt history (4 previous attempts)
    final attemptHistory = [
      // First attempt - 6/10 correct (60%)
      AttemptHistoryEntry(
        timestamp: now.subtract(const Duration(days: 7)).millisecondsSinceEpoch,
        totalQuestions: 10,
        correctAnswers: 6,
        incorrectAnswers: 4,
        skippedAnswers: 0,
        timeSpentSeconds: 245,
      ),
      // Second attempt - 7/10 correct (70%)
      AttemptHistoryEntry(
        timestamp: now.subtract(const Duration(days: 5)).millisecondsSinceEpoch,
        totalQuestions: 10,
        correctAnswers: 7,
        incorrectAnswers: 3,
        skippedAnswers: 0,
        timeSpentSeconds: 198,
      ),
      // Third attempt - 8/10 correct (80%)
      AttemptHistoryEntry(
        timestamp: now.subtract(const Duration(days: 3)).millisecondsSinceEpoch,
        totalQuestions: 10,
        correctAnswers: 8,
        incorrectAnswers: 2,
        skippedAnswers: 0,
        timeSpentSeconds: 187,
      ),
      // Fourth attempt - 9/10 correct (90%)
      AttemptHistoryEntry(
        timestamp: now.subtract(const Duration(days: 1)).millisecondsSinceEpoch,
        totalQuestions: 10,
        correctAnswers: 9,
        incorrectAnswers: 1,
        skippedAnswers: 0,
        timeSpentSeconds: 165,
      ),
    ];

    final questions = [
      // Question 1 - Known (answered correctly 3+ times)
      Question(
        id: 'gk_1',
        prompt: 'What is the capital city of Australia?',
        answers: ['Sydney', 'Melbourne', 'Canberra', 'Perth'],
        correctAnswerIndices: [2],
        consecutiveCorrect: 3,
        isKnown: true,
        priorityPoints: 0,
        lastAttemptIndex: 3,
        totalCorrectAttempts: 4,
        totalAttempts: 4,
      ),
      // Question 2 - Known
      Question(
        id: 'gk_2',
        prompt: 'Which planet is known as the Red Planet?',
        answers: ['Venus', 'Mars', 'Jupiter', 'Saturn'],
        correctAnswerIndices: [1],
        consecutiveCorrect: 3,
        isKnown: true,
        priorityPoints: 0,
        lastAttemptIndex: 3,
        totalCorrectAttempts: 4,
        totalAttempts: 4,
      ),
      // Question 3 - Known
      Question(
        id: 'gk_3',
        prompt: 'What is the largest ocean on Earth?',
        answers: ['Atlantic Ocean', 'Indian Ocean', 'Arctic Ocean', 'Pacific Ocean'],
        correctAnswerIndices: [3],
        consecutiveCorrect: 3,
        isKnown: true,
        priorityPoints: 0,
        lastAttemptIndex: 3,
        totalCorrectAttempts: 4,
        totalAttempts: 4,
      ),
      // Question 4 - Known
      Question(
        id: 'gk_4',
        prompt: 'Who wrote the novel "1984"?',
        answers: ['George Orwell', 'Aldous Huxley', 'Ray Bradbury', 'J.D. Salinger'],
        correctAnswerIndices: [0],
        consecutiveCorrect: 3,
        isKnown: true,
        priorityPoints: 0,
        lastAttemptIndex: 3,
        totalCorrectAttempts: 4,
        totalAttempts: 4,
      ),
      // Question 5 - Known
      Question(
        id: 'gk_5',
        prompt: 'What is the chemical symbol for gold?',
        answers: ['Go', 'Gd', 'Au', 'Ag'],
        correctAnswerIndices: [2],
        consecutiveCorrect: 3,
        isKnown: true,
        priorityPoints: 0,
        lastAttemptIndex: 3,
        totalCorrectAttempts: 4,
        totalAttempts: 4,
      ),
      // Question 6 - Progress (2 consecutive correct, not yet known)
      Question(
        id: 'gk_6',
        prompt: 'In which year did World War II end?',
        answers: ['1943', '1944', '1945', '1946'],
        correctAnswerIndices: [2],
        consecutiveCorrect: 2,
        isKnown: false,
        priorityPoints: 0,
        lastAttemptIndex: 3,
        totalCorrectAttempts: 3,
        totalAttempts: 4,
      ),
      // Question 7 - Progress (1 consecutive correct)
      Question(
        id: 'gk_7',
        prompt: 'What is the smallest prime number?',
        answers: ['0', '1', '2', '3'],
        correctAnswerIndices: [2],
        consecutiveCorrect: 1,
        isKnown: false,
        priorityPoints: 0,
        lastAttemptIndex: 3,
        totalCorrectAttempts: 2,
        totalAttempts: 4,
      ),
      // Question 8 - Some mistakes (has priority points from incorrect answers)
      Question(
        id: 'gk_8',
        prompt: 'Which gas makes up approximately 78% of Earth\'s atmosphere?',
        answers: ['Oxygen', 'Carbon Dioxide', 'Nitrogen', 'Argon'],
        correctAnswerIndices: [2],
        consecutiveCorrect: 0,
        isKnown: false,
        priorityPoints: 5,
        lastAttemptIndex: 2,
        totalCorrectAttempts: 2,
        totalAttempts: 4,
      ),
      // Question 9 - Known
      Question(
        id: 'gk_9',
        prompt: 'What is the longest river in the world?',
        answers: ['Amazon River', 'Nile River', 'Yangtze River', 'Mississippi River'],
        correctAnswerIndices: [1],
        consecutiveCorrect: 3,
        isKnown: true,
        priorityPoints: 0,
        lastAttemptIndex: 3,
        totalCorrectAttempts: 4,
        totalAttempts: 4,
      ),
      // Question 10 - Known
      Question(
        id: 'gk_10',
        prompt: 'Who painted the Mona Lisa?',
        answers: ['Vincent van Gogh', 'Pablo Picasso', 'Leonardo da Vinci', 'Michelangelo'],
        correctAnswerIndices: [2],
        consecutiveCorrect: 3,
        isKnown: true,
        priorityPoints: 0,
        lastAttemptIndex: 3,
        totalCorrectAttempts: 4,
        totalAttempts: 4,
      ),
      // Question 11 - Progress
      Question(
        id: 'gk_11',
        prompt: 'What is the speed of light in a vacuum (approximately)?',
        answers: ['300,000 km/s', '150,000 km/s', '450,000 km/s', '600,000 km/s'],
        correctAnswerIndices: [0],
        consecutiveCorrect: 2,
        isKnown: false,
        priorityPoints: 0,
        lastAttemptIndex: 3,
        totalCorrectAttempts: 3,
        totalAttempts: 4,
      ),
      // Question 12 - Known
      Question(
        id: 'gk_12',
        prompt: 'Which country is home to the kangaroo?',
        answers: ['New Zealand', 'Australia', 'South Africa', 'Brazil'],
        correctAnswerIndices: [1],
        consecutiveCorrect: 3,
        isKnown: true,
        priorityPoints: 0,
        lastAttemptIndex: 3,
        totalCorrectAttempts: 4,
        totalAttempts: 4,
      ),
      // Question 13 - Some mistakes
      Question(
        id: 'gk_13',
        prompt: 'What is the hardest natural substance on Earth?',
        answers: ['Gold', 'Diamond', 'Platinum', 'Titanium'],
        correctAnswerIndices: [1],
        consecutiveCorrect: 0,
        isKnown: false,
        priorityPoints: 3,
        lastAttemptIndex: 1,
        totalCorrectAttempts: 1,
        totalAttempts: 4,
      ),
      // Question 14 - Progress
      Question(
        id: 'gk_14',
        prompt: 'How many continents are there on Earth?',
        answers: ['5', '6', '7', '8'],
        correctAnswerIndices: [2],
        consecutiveCorrect: 1,
        isKnown: false,
        priorityPoints: 0,
        lastAttemptIndex: 3,
        totalCorrectAttempts: 2,
        totalAttempts: 4,
      ),
      // Question 15 - Known
      Question(
        id: 'gk_15',
        prompt: 'What is the largest mammal in the world?',
        answers: ['African Elephant', 'Blue Whale', 'Giraffe', 'Polar Bear'],
        correctAnswerIndices: [1],
        consecutiveCorrect: 3,
        isKnown: true,
        priorityPoints: 0,
        lastAttemptIndex: 3,
        totalCorrectAttempts: 4,
        totalAttempts: 4,
      ),
      // Question 16 - Known
      Question(
        id: 'gk_16',
        prompt: 'In which city is the Eiffel Tower located?',
        answers: ['London', 'Berlin', 'Paris', 'Rome'],
        correctAnswerIndices: [2],
        consecutiveCorrect: 3,
        isKnown: true,
        priorityPoints: 0,
        lastAttemptIndex: 3,
        totalCorrectAttempts: 4,
        totalAttempts: 4,
      ),
      // Question 17 - Known
      Question(
        id: 'gk_17',
        prompt: 'What is the square root of 64?',
        answers: ['6', '7', '8', '9'],
        correctAnswerIndices: [2],
        consecutiveCorrect: 3,
        isKnown: true,
        priorityPoints: 0,
        lastAttemptIndex: 3,
        totalCorrectAttempts: 4,
        totalAttempts: 4,
      ),
      // Question 18 - Progress
      Question(
        id: 'gk_18',
        prompt: 'Which element has the atomic number 1?',
        answers: ['Helium', 'Hydrogen', 'Lithium', 'Carbon'],
        correctAnswerIndices: [1],
        consecutiveCorrect: 2,
        isKnown: false,
        priorityPoints: 0,
        lastAttemptIndex: 3,
        totalCorrectAttempts: 3,
        totalAttempts: 4,
      ),
      // Question 19 - Some mistakes
      Question(
        id: 'gk_19',
        prompt: 'What is the largest desert in the world?',
        answers: ['Gobi Desert', 'Sahara Desert', 'Antarctic Desert', 'Arabian Desert'],
        correctAnswerIndices: [2],
        consecutiveCorrect: 0,
        isKnown: false,
        priorityPoints: 5,
        lastAttemptIndex: 0,
        totalCorrectAttempts: 1,
        totalAttempts: 4,
      ),
      // Question 20 - Progress
      Question(
        id: 'gk_20',
        prompt: 'Who invented the telephone?',
        answers: ['Thomas Edison', 'Alexander Graham Bell', 'Nikola Tesla', 'Guglielmo Marconi'],
        correctAnswerIndices: [1],
        consecutiveCorrect: 1,
        isKnown: false,
        priorityPoints: 0,
        lastAttemptIndex: 3,
        totalCorrectAttempts: 2,
        totalAttempts: 4,
      ),
    ];

    return Deck(
      id: 'default-general-knowledge',
      title: 'General Knowledge Quiz',
      description: 'A collection of 20 general knowledge questions covering science, geography, history, and more. Perfect for testing your knowledge!',
      questions: questions,
      config: config,
      currentAttemptIndex: 4, // 4 attempts have been made
      attemptHistory: attemptHistory,
    );
  }
}