import { useState, useEffect } from 'react';
import { useParams, useNavigate } from 'react-router-dom';
import Layout from '../components/layout/Layout';
import { matchesAPI } from '../services/api';
import { Star, Loader2 } from 'lucide-react';

const RatePartnerPage = () => {
  const { slug } = useParams();
  const navigate = useNavigate();
  const [match, setMatch] = useState(null);
  const [loading, setLoading] = useState(true);
  const [rating, setRating] = useState(0);
  const [hoveredRating, setHoveredRating] = useState(0);
  const [comment, setComment] = useState('');
  const [wouldCollaborateAgain, setWouldCollaborateAgain] = useState(true);
  const [submitting, setSubmitting] = useState(false);

  // Load match data and check if already rated
  useEffect(() => {
    const loadMatch = async () => {
      try {
        setLoading(true);
        const result = await matchesAPI.getMatch(slug);
        setMatch(result.data);

        // Check if this match can be rated
        if (result.data.status !== 'accepted' && result.data.status !== 'completed') {
          alert('This match must be accepted before rating.');
          navigate('/matches');
          return;
        }

        // Check if user has already rated this match
        if (result.data.hasRated) {
          alert('You have already rated this match.');
          navigate('/matches');
          return;
        }
      } catch (error) {
        console.error('Failed to load match:', error);
        alert('Failed to load match. Redirecting to matches page.');
        navigate('/matches');
      } finally {
        setLoading(false);
      }
    };
    loadMatch();
  }, [slug, navigate]);

  const partner = match?.partner;

  const handleSubmit = async (e) => {
    e.preventDefault();
    if (rating === 0) {
      alert('Please select a rating (1-5 stars)');
      return;
    }

    setSubmitting(true);

    try {
      await matchesAPI.createRating(slug, {
        score: rating,
        comment: comment.trim() || null,
        wouldCollaborateAgain,
      });

      alert('Rating submitted successfully!');
      navigate('/matches');
    } catch (error) {
      console.error('Failed to submit rating:', error);
      if (error.message?.includes('already rated')) {
        alert('You have already rated this match.');
      } else {
        alert('Failed to submit rating. Please try again.');
      }
    } finally {
      setSubmitting(false);
    }
  };

  if (loading || !match || !partner) {
    return (
      <Layout>
        <div className="flex justify-center items-center py-12">
          <Loader2 className="w-8 h-8 animate-spin text-primary-600" />
        </div>
      </Layout>
    );
  }

  return (
    <Layout>
      <div className="max-w-2xl mx-auto">
        <div className="bg-white rounded-lg shadow-md p-8">
          <h1 className="text-3xl font-bold text-gray-900 mb-6 text-center">
            Rate the collaboration
          </h1>

          {/* Partner Info */}
          <div className="flex items-center justify-center space-x-4 mb-8 p-6 bg-gray-50 rounded-lg">
            <img
              src={partner.avatar || `https://api.dicebear.com/7.x/avataaars/svg?seed=${partner.username}`}
              alt={partner.username}
              className="w-16 h-16 rounded-full"
            />
            <div>
              <h3 className="text-xl font-bold text-gray-900">
                {partner.firstName && partner.lastName
                  ? `${partner.firstName} ${partner.lastName}`
                  : partner.username}
              </h3>
              <p className="text-gray-600">@{partner.username}</p>
            </div>
          </div>

          <form onSubmit={handleSubmit} className="space-y-6">
            {/* Rating Stars */}
            <div>
              <label className="block text-sm font-medium text-gray-700 mb-3 text-center">
                How would you rate the collaboration?
              </label>
              <div className="flex justify-center space-x-2">
                {[1, 2, 3, 4, 5].map((star) => (
                  <button
                    key={star}
                    type="button"
                    onClick={() => setRating(star)}
                    onMouseEnter={() => setHoveredRating(star)}
                    onMouseLeave={() => setHoveredRating(0)}
                    className="focus:outline-none transition-transform hover:scale-110"
                  >
                    <Star
                      className={`w-12 h-12 ${
                        star <= (hoveredRating || rating)
                          ? 'fill-yellow-400 text-yellow-400'
                          : 'text-gray-300'
                      }`}
                    />
                  </button>
                ))}
              </div>
              <p className="text-center text-sm text-gray-500 mt-2">
                {rating === 0 && 'Click to rate'}
                {rating === 1 && 'Poor'}
                {rating === 2 && 'Fair'}
                {rating === 3 && 'Good'}
                {rating === 4 && 'Very good'}
                {rating === 5 && 'Excellent!'}
              </p>
            </div>

            {/* Comment */}
            <div>
              <label className="block text-sm font-medium text-gray-700 mb-2">
                Comment (optional)
              </label>
              <textarea
                value={comment}
                onChange={(e) => setComment(e.target.value)}
                rows={4}
                className="w-full px-3 py-2 border border-gray-300 rounded-md focus:ring-primary-500 focus:border-primary-500"
                placeholder="Share your thoughts about the collaboration..."
              />
            </div>

            {/* Would Collaborate Again */}
            <div className="flex items-center space-x-3 p-4 bg-gray-50 rounded-lg">
              <input
                type="checkbox"
                id="collaborate"
                checked={wouldCollaborateAgain}
                onChange={(e) => setWouldCollaborateAgain(e.target.checked)}
                className="w-5 h-5 text-primary-600 border-gray-300 rounded focus:ring-primary-500"
              />
              <label htmlFor="collaborate" className="text-sm font-medium text-gray-700 cursor-pointer">
                I would like to collaborate again
              </label>
            </div>

            {/* Submit Button */}
            <button
              type="submit"
              disabled={submitting || rating === 0}
              className="w-full px-6 py-3 bg-primary-600 text-white rounded-md hover:bg-primary-700 transition-colors disabled:opacity-50 disabled:cursor-not-allowed font-medium"
            >
              {submitting ? 'Saving...' : 'Save rating'}
            </button>
          </form>
        </div>
      </div>
    </Layout>
  );
};

export default RatePartnerPage;
