import 'dart:math';

import 'package:flutter/material.dart';

class GameItem {
  final Offset position;
  final ItemType type;
  final String content;
  final bool isCorrect;
  final double value;
  final int maxCycles;
  int remainingCycles;

  GameItem({
    required this.position,
    required this.type,
    required this.content,
    this.isCorrect = true,
    this.value = 1.0,
    required this.maxCycles,
    this.remainingCycles = -1,
  }) {
    if (remainingCycles == -1) {
      remainingCycles = maxCycles;
    }
  }

  bool get isExpired => remainingCycles <= 0;

  double get remainingLifetimePercent =>
      (remainingCycles / 10.0).clamp(0.0, 1.0);

  // Calculate opacity based on remaining lifetime
  double get opacity {
    if (remainingLifetimePercent >= 1.0) {
      return 1.0;
    } else {
      return (remainingLifetimePercent).clamp(0.2, 1.0);
    }
  }

  // Decrease remaining cycles by 1
  void decrementCycle() {
    remainingCycles--;
  }
}

enum ItemType {
  letter,
  word,
  slowTime,
  health,
  scoreMultiplier,
  categoryChallenge,
  shield, // Temporary invincibility
  magnet, // Attracts nearby items
}

class PowerUp {
  final PowerUpType type;
  final Duration duration;
  final double value;
  DateTime? activatedAt;

  PowerUp({
    required this.type,
    required this.duration,
    required this.value,
  });

  bool get isActive {
    if (activatedAt == null) return false;
    return DateTime.now().difference(activatedAt!) < duration;
  }

  void activate() {
    activatedAt = DateTime.now();
  }
}

enum PowerUpType {
  slowTime,
  scoreMultiplier,
  shield, // Temporary invincibility
  magnet // Attracts nearby items
}

class Category {
  final String name;
  final List<String> correctAnswers;
  final List<String> wrongAnswers;

  Category({
    required this.name,
    required this.correctAnswers,
    required this.wrongAnswers,
  });
}