'use client';
import { useState } from 'react';
import styles from './FeedbackWidget.module.css';

export default function FeedbackWidget({ imageHash, predictedId, top5, isOodScreen, onFeedbackSuccess }) {
  const [feedbackState, setFeedbackState] = useState('idle');
  const [errorMessage, setErrorMessage] = useState('');

  const sendFeedback = async (isCorrect, userCorrectionId = null) => {
    setFeedbackState('submitting');
    try {
      const response = await fetch('/api/feedback', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({
          image_hash: imageHash,
          predicted_id: predictedId,
          is_correct: isCorrect,
          user_correction_id: userCorrectionId,
          is_ood_screen: isOodScreen || false
        })
      });

      if (!response.ok) {
        if (response.status === 429) {
          throw new Error("Muitas requisições. Tente novamente mais tarde.");
        }
        throw new Error("Erro ao salvar feedback");
      }
      setFeedbackState('success');
      if (onFeedbackSuccess) {
          onFeedbackSuccess(isCorrect);
      }
      setTimeout(() => {
        setFeedbackState('hidden');
      }, 3000);
    } catch (error) {
      setFeedbackState('error');
      setErrorMessage(error.message);
      setTimeout(() => setFeedbackState('idle'), 4000);
    }
  };

  if (feedbackState === 'hidden') {
    return null;
  }

  if (feedbackState === 'success') {
    return (
      <div className={styles.successMessage}>
        <svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="3" strokeLinecap="round" strokeLinejoin="round" style={{marginRight: '8px', color: '#4caf50'}}><polyline points="20 6 9 17 4 12"></polyline></svg>
        Feedback sent, thank you!
      </div>
    );
  }

  return (
    <div className={styles.feedbackContainer}>
      {feedbackState === 'idle' || feedbackState === 'error' ? (
        <div className={styles.voteButtons}>
          <span className={styles.prompt}>
            {isOodScreen ? "Did PokedexNet get this right?" : "Was this prediction accurate?"}
          </span>
          <button 
            className={`${styles.voteBtn} ${styles.likeBtn}`} 
            onClick={() => sendFeedback(true, isOodScreen ? 'none' : null)}
            title={isOodScreen ? "Yes, it is NOT a Pokémon" : "Yes, it's correct"}
          >
            <svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2.5" strokeLinecap="round" strokeLinejoin="round"><path d="M14 9V5a3 3 0 0 0-3-3l-4 9v11h11.28a2 2 0 0 0 2-1.7l1.38-9a2 2 0 0 0-2-2.3zM7 22H4a2 2 0 0 1-2-2v-7a2 2 0 0 1 2-2h3"></path></svg>
          </button>
          <button 
            className={`${styles.voteBtn} ${styles.dislikeBtn}`} 
            onClick={() => isOodScreen ? sendFeedback(false, 'unknown_pokemon') : setFeedbackState('dislike_menu')}
            title={isOodScreen ? "No, it actually IS a Pokémon" : "No, it's wrong"}
          >
            <svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2.5" strokeLinecap="round" strokeLinejoin="round"><path d="M10 15v4a3 3 0 0 0 3 3l4-9V2H5.72a2 2 0 0 0-2 1.7l-1.38 9a2 2 0 0 0 2 2.3zm7-13h2.67A2.31 2.31 0 0 1 22 4v7a2.31 2.31 0 0 1-2.33 2H17"></path></svg>
          </button>
          {feedbackState === 'error' && <span className={styles.errorText}>{errorMessage}</span>}
        </div>
      ) : feedbackState === 'submitting' ? (
        <div className={styles.loadingMessage}>Sending feedback...</div>
      ) : feedbackState === 'dislike_menu' ? (
        <div className={styles.dislikeMenu}>
          <span className={styles.prompt}>What Pokémon is it really?</span>
          <div className={styles.optionsGrid}>
            {top5 && top5.slice(1).map(pred => (
              <button 
                key={pred.pokemon_id} 
                className={styles.optionBtn}
                onClick={() => sendFeedback(false, pred.pokemon_id)}
              >
                {pred.name}
              </button>
            ))}
            <button 
              className={`${styles.optionBtn} ${styles.noneBtn}`}
              onClick={() => sendFeedback(false, 'none')}
            >
              None of these
            </button>
          </div>
          <button 
            className={styles.cancelBtn} 
            onClick={() => setFeedbackState('idle')}
          >
            Cancel
          </button>
        </div>
      ) : null}
      {(feedbackState === 'idle' || feedbackState === 'error' || feedbackState === 'dislike_menu') && (
        <span className={styles.privacyNotice}>
          By submitting feedback, your image may be anonymously stored for model improvement.
        </span>
      )}
    </div>
  );
}