"use client";

import { useState, useEffect, useTransition, type FormEvent } from "react";
import { useSession } from "next-auth/react";
import { useRouter, useParams } from "next/navigation";
import Navigation from "@/components/Navigation";
import { createFeedback } from "@/actions/events/feedback";

interface Event {
  id: string;
  name: string;
  date: string;
  description: string;
}

interface Feedback {
  id: string;
  rating: number;
  comment: string | null;
}

interface FeedbackPageClientProps {
  backgroundImage: string;
}

export default function FeedbackPageClient({
  backgroundImage,
}: FeedbackPageClientProps) {
  const { status } = useSession();
  const router = useRouter();
  const params = useParams();
  const eventId = params?.eventId as string;

  const [event, setEvent] = useState<Event | null>(null);
  const [existingFeedback, setExistingFeedback] = useState<Feedback | null>(
    null
  );
  const [loading, setLoading] = useState(true);
  const [submitting, setSubmitting] = useState(false);
  const [error, setError] = useState("");
  const [success, setSuccess] = useState(false);
  const [, startTransition] = useTransition();

  const [rating, setRating] = useState(0);
  const [comment, setComment] = useState("");

  const fetchEventAndFeedback = async () => {
    try {
      // Récupérer l'événement
      const eventResponse = await fetch(`/api/events/${eventId}`);
      if (!eventResponse.ok) {
        setError("Événement introuvable");
        setLoading(false);
        return;
      }
      const eventData = await eventResponse.json();
      setEvent(eventData);

      // Récupérer le feedback existant si disponible
      const feedbackResponse = await fetch(`/api/feedback/${eventId}`);
      if (feedbackResponse.ok) {
        const feedbackData = await feedbackResponse.json();
        if (feedbackData.feedback) {
          setExistingFeedback(feedbackData.feedback);
          setRating(feedbackData.feedback.rating);
          setComment(feedbackData.feedback.comment || "");
        }
      }
    } catch {
      setError("Erreur lors du chargement des données");
    } finally {
      setLoading(false);
    }
  };

  useEffect(() => {
    if (status === "unauthenticated") {
      router.push(`/login?redirect=/feedback/${eventId}`);
      return;
    }

    if (status === "authenticated" && eventId) {
      fetchEventAndFeedback();
    }
    // eslint-disable-next-line react-hooks/exhaustive-deps
  }, [status, eventId, router]);

  const handleSubmit = async (e: FormEvent) => {
    e.preventDefault();
    setError("");
    setSuccess(false);

    if (rating === 0) {
      setError("Veuillez sélectionner une note");
      return;
    }

    setSubmitting(true);

    startTransition(async () => {
      try {
        const result = await createFeedback(eventId, {
          rating,
          comment: comment.trim() || null,
        });

        if (!result.success) {
          setError(result.error || "Erreur lors de l'enregistrement");
          setSubmitting(false);
          return;
        }

        setSuccess(true);
        if (result.data) {
          setExistingFeedback({
            id: result.data.id,
            rating: result.data.rating,
            comment: result.data.comment,
          });
        }

        // Rediriger après 2 secondes
        setTimeout(() => {
          router.push("/events");
        }, 2000);
      } catch {
        setError("Erreur lors de l'enregistrement");
      } finally {
        setSubmitting(false);
      }
    });
  };

  if (status === "loading" || loading) {
    return (
      <main className="min-h-screen bg-black relative">
        <Navigation />
        <section className="relative w-full min-h-screen flex flex-col items-center justify-center overflow-hidden pt-24">
          <div className="text-white">Chargement...</div>
        </section>
      </main>
    );
  }

  if (!event) {
    return (
      <main className="min-h-screen bg-black relative">
        <Navigation />
        <section className="relative w-full min-h-screen flex flex-col items-center justify-center overflow-hidden pt-24">
          <div className="text-red-400">Événement introuvable</div>
        </section>
      </main>
    );
  }

  return (
    <main className="min-h-screen bg-black relative">
      <Navigation />
      <section className="relative w-full min-h-screen flex flex-col items-center justify-center overflow-hidden pt-24">
        {/* Background Image */}
        <div
          className="absolute inset-0 bg-cover bg-center bg-no-repeat"
          style={{
            backgroundImage: `url('${backgroundImage}')`,
          }}
        >
          <div className="absolute inset-0 bg-gradient-to-b from-black/70 via-black/60 to-black/80"></div>
        </div>

        {/* Feedback Form */}
        <div className="relative z-10 w-full max-w-2xl mx-auto px-8">
          <div className="bg-black/80 border border-pixel-gold/30 rounded-lg p-8 backdrop-blur-sm">
            <h1 className="text-4xl font-gaming font-black mb-2 text-center">
              <span className="bg-gradient-to-r from-pixel-gold via-orange-400 to-pixel-gold bg-clip-text text-transparent">
                FEEDBACK
              </span>
            </h1>
            <p className="text-gray-400 text-sm text-center mb-2">
              {existingFeedback
                ? "Modifier votre feedback pour"
                : "Donnez votre avis sur"}
            </p>
            <p className="text-pixel-gold text-lg font-semibold text-center mb-8">
              {event.name}
            </p>

            {success && (
              <div className="bg-green-900/50 border border-green-500/50 text-green-400 px-4 py-3 rounded text-sm mb-6">
                Feedback enregistré avec succès ! Redirection...
              </div>
            )}

            {error && (
              <div className="bg-red-900/50 border border-red-500/50 text-red-400 px-4 py-3 rounded text-sm mb-6">
                {error}
              </div>
            )}

            <form onSubmit={handleSubmit} className="space-y-6">
              {/* Rating */}
              <div>
                <label className="block text-sm font-semibold text-gray-300 mb-4 uppercase tracking-wider">
                  Note
                </label>
                <div className="flex items-center justify-center gap-2">
                  {[1, 2, 3, 4, 5].map((star) => (
                    <button
                      key={star}
                      type="button"
                      onClick={() => setRating(star)}
                      className={`text-4xl transition-transform hover:scale-110 ${
                        star <= rating
                          ? "text-pixel-gold"
                          : "text-gray-600 hover:text-gray-500"
                      }`}
                      aria-label={`Noter ${star} étoile${star > 1 ? "s" : ""}`}
                    >
                      ★
                    </button>
                  ))}
                </div>
                <p className="text-gray-500 text-xs text-center mt-2">
                  {rating > 0 && `${rating}/5`}
                </p>
              </div>

              {/* Comment */}
              <div>
                <label
                  htmlFor="comment"
                  className="block text-sm font-semibold text-gray-300 mb-2 uppercase tracking-wider"
                >
                  Commentaire (optionnel)
                </label>
                <textarea
                  id="comment"
                  value={comment}
                  onChange={(e) => setComment(e.target.value)}
                  rows={6}
                  maxLength={1000}
                  className="w-full px-4 py-3 bg-black/60 border border-pixel-gold/30 rounded text-white placeholder-gray-500 focus:outline-none focus:border-pixel-gold transition resize-none"
                  placeholder="Partagez votre expérience, vos suggestions..."
                />
                <p className="text-gray-500 text-xs mt-1 text-right">
                  {comment.length}/1000 caractères
                </p>
              </div>

              {/* Submit Button */}
              <button
                type="submit"
                disabled={submitting || rating === 0}
                className="w-full px-6 py-3 border border-pixel-gold/50 bg-black/60 text-white uppercase text-sm tracking-widest rounded hover:bg-pixel-gold/10 hover:border-pixel-gold transition disabled:opacity-50 disabled:cursor-not-allowed"
              >
                {submitting
                  ? "Enregistrement..."
                  : existingFeedback
                    ? "Modifier le feedback"
                    : "Envoyer le feedback"}
              </button>
            </form>
          </div>
        </div>
      </section>
    </main>
  );
}