import { useState, useEffect } from "react";
import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
import { Button } from "@/components/ui/button";
import { Progress } from "@/components/ui/progress";
import { useExerciseWords } from "@/hooks/phonics/useExerciseAttempt";
import { useUpdatePhonicsProgress } from "@/hooks/phonics/usePhonicsProgress";
import { ExerciseFactory } from "./exercises/ExerciseFactory";
import { Timer } from "lucide-react";
import type { PhonicsExercise, PhonicsWord } from "@/types/phonics";
import { cn } from "@/lib/utils";

interface ExercisePlayerProps {
  exercise: PhonicsExercise;
  studentId: string;
  onComplete: () => void;
  onExit: () => void;
}

export function ExercisePlayer({ 
  exercise, 
  studentId, 
  onComplete, 
  onExit 
}: ExercisePlayerProps) {
  const [currentStep, setCurrentStep] = useState(0);
  const [score, setScore] = useState(0);
  const [timeSpent, setTimeSpent] = useState(0);
  const [answers, setAnswers] = useState<string[]>([]);
  const [mistakes, setMistakes] = useState<string[]>([]);
  const [showFeedback, setShowFeedback] = useState(false);
  const [lastAnswerCorrect, setLastAnswerCorrect] = useState<boolean | null>(null);

  const { data: exerciseWords, isLoading } = useExerciseWords(exercise.id);
  const updateProgress = useUpdatePhonicsProgress();

  useEffect(() => {
    const timer = setInterval(() => {
      setTimeSpent((prev) => prev + 1);
    }, 1000);

    return () => clearInterval(timer);
  }, []);

  const handleAnswer = async (word: string, isCorrect: boolean) => {
    setLastAnswerCorrect(isCorrect);
    setShowFeedback(true);

    if (isCorrect) {
      setScore((prev) => prev + 1);
      setAnswers((prev) => [...prev, word]);
    } else {
      setMistakes((prev) => [...prev, word]);
    }

    // Aguardar feedback antes de prosseguir
    await new Promise(resolve => setTimeout(resolve, 1500));
    setShowFeedback(false);

    if (currentStep < (exerciseWords?.length || 0) - 1) {
      setCurrentStep((prev) => prev + 1);
    } else {
      handleComplete();
    }
  };

  const handleComplete = async () => {
    const finalScore = score / (exerciseWords?.length || 1);
    const stars = Math.ceil(finalScore * 3);

    await updateProgress.mutateAsync({
      studentId,
      exerciseId: exercise.id,
      attempts: 1,
      bestScore: finalScore,
      lastScore: finalScore,
      completed: finalScore >= exercise.requiredScore,
      stars,
      xpEarned: Math.round(finalScore * exercise.points)
    });

    onComplete();
  };

  if (isLoading || !exerciseWords?.length) {
    return (
      <Card className="w-full max-w-2xl mx-auto">
        <CardContent className="py-8">
          <div className="text-center text-muted-foreground">
            Carregando exercício...
          </div>
        </CardContent>
      </Card>
    );
  }

  const progress = ((currentStep + 1) / exerciseWords.length) * 100;
  const currentWord = exerciseWords[currentStep].word as unknown as PhonicsWord;

  return (
    <Card className={cn(
      "w-full max-w-2xl mx-auto transition-colors duration-500",
      showFeedback && lastAnswerCorrect && "bg-green-50",
      showFeedback && !lastAnswerCorrect && "bg-red-50"
    )}>
      <CardHeader>
        <div className="flex justify-between items-center">
          <CardTitle>{exercise.title}</CardTitle>
          <div className="flex items-center gap-4">
            <div className="flex items-center gap-2 text-sm text-muted-foreground">
              <Timer className="w-4 h-4" />
              <span>{Math.floor(timeSpent / 60)}:{(timeSpent % 60).toString().padStart(2, '0')}</span>
            </div>
            <Button variant="outline" size="sm" onClick={onExit}>
              Sair
            </Button>
          </div>
        </div>
        <Progress value={progress} className="h-2" />
      </CardHeader>

      <CardContent>
        <div className="space-y-6">
          <div className="text-center text-muted-foreground mb-8">
            Exercício {currentStep + 1} de {exerciseWords.length}
          </div>

          <ExerciseFactory
            type={exercise.exerciseType}
            currentWord={currentWord}
            options={exerciseWords[currentStep].options}
            onAnswer={handleAnswer}
            disabled={showFeedback}
          />

          {showFeedback && (
            <div className={cn(
              "text-center text-lg font-medium py-4 rounded-lg",
              lastAnswerCorrect ? "text-green-600" : "text-red-600"
            )}>
              {lastAnswerCorrect ? "Muito bem!" : "Tente novamente na próxima!"}
            </div>
          )}
        </div>
      </CardContent>
    </Card>
  );
}