"use client";
import apiClient from "@/api/apiClient";
import { useEffect, useState, useRef } from "react";
import Link from "next/link";
import { FontAwesomeIcon } from "@fortawesome/react-fontawesome";
import {
  faCaretLeft,
  faCaretRight,
  faFilter,
  faTimes,
  faXmark, // Import the close icon
} from "@fortawesome/free-solid-svg-icons";
import Image from "next/image";
import "./genres.css";
import GenreFilterModal from "@/modals/GenreFilterModal"; // Import the Modal
import { Spinner } from "@/components/Spinner";

export default function GenrePage({ params }) {
  const [genreItems, setGenreItems] = useState(null);
  const [loading, setLoading] = useState(true);
  const [error, setError] = useState(null);
  const [itemLimit, setItemLimit] = useState(10);
  const [selectedGenres, setSelectedGenres] = useState(
    new Set(params.genre ? decodeURIComponent(params.genre).split(",") : [])
  );
  const [isModalOpen, setIsModalOpen] = useState(false); // State for modal visibility

  const moviesRef = useRef(null);
  const seriesRef = useRef(null);

  useEffect(() => {
    async function fetchData() {
      try {
        if (selectedGenres.size === 0) {
          setGenreItems({ movies: [], series: [] });
          setLoading(false);
          return;
        }

        const genreArray = Array.from(selectedGenres);
        const data = await apiClient.getGenreItems(genreArray, null, itemLimit);
        if (data) {
          setGenreItems(data);
          console.log(data);
        } else {
          setError("Genre data not found.");
        }
      } catch (err) {
        setError(err.message || "An error occurred while fetching genre data.");
        console.log(err);
      } finally {
        setLoading(false);
      }
    }
    fetchData();
  }, [selectedGenres, itemLimit]);

  const loadMore = () => {
    setItemLimit((prevLimit) => prevLimit + 5);
  };

  const scroll = (ref, direction) => {
    if (ref.current) {
      const scrollAmount = direction === "left" ? -360 : 360;
      ref.current.scrollBy({ left: scrollAmount, behavior: "smooth" });
    }
  };

  const openModal = () => setIsModalOpen(true);
  const closeModal = () => setIsModalOpen(false);

  const removeGenre = (genreToRemove) => {
    setSelectedGenres((prevGenres) => {
      const updatedGenres = new Set(prevGenres);
      updatedGenres.delete(genreToRemove);
      return updatedGenres;
    });
  };

  if (loading) {
    return (
      <div className="loading">
        <Spinner />
      </div>
    );
  }

  return (
    <div className="genre-page">
      <div className="genre-title-section"></div>
      <div className="genre-bubbles">
        <button className="genre-filter-button" onClick={openModal}>
          <FontAwesomeIcon icon={faFilter} size="sm" />
        </button>
        <div className="genre-bubbles-scroll-section">
          {selectedGenres.size > 0
            ? Array.from(selectedGenres).map((genre, index) => (
                <div key={index} className="bubbles">
                  {genre}
                  <button
                    className="genre-bubble-close-button"
                    onClick={() => removeGenre(genre)}
                  >
                    <FontAwesomeIcon icon={faXmark} size="sm" />
                  </button>
                </div>
              ))
            : "Select Genres"}
        </div>
      </div>
      <GenreFilterModal
        isOpen={isModalOpen}
        onClose={closeModal}
        selectedGenres={selectedGenres}
        onGenreChange={setSelectedGenres}
      />

      {genreItems && (
        <>
          {genreItems.movies && genreItems.movies.length > 0 && (
            <section className="genre-section movies">
              <div className="genre-section-controls">
                <h2>Movies</h2>
                <div className="load-more-container">
                  <button className="load-more-button" onClick={loadMore}>
                    Load More
                  </button>
                </div>
                <div className="genre-scroll-controls">
                  <button
                    onClick={() => scroll(moviesRef, "left")}
                    className="genre-scroll-button"
                  >
                    <FontAwesomeIcon icon={faCaretLeft} size="2xl" />
                  </button>
                  <button
                    onClick={() => scroll(moviesRef, "right")}
                    className="genre-scroll-button"
                  >
                    <FontAwesomeIcon icon={faCaretRight} size="2xl" />
                  </button>
                </div>
              </div>
              <div className="genre-items-grid" ref={moviesRef}>
                {genreItems.movies.map((item, index) => (
                  <div key={index} className="genre-item-card">
                    <Link href={`/movie/${item[0]}`} passHref>
                      <div className="genre-item-link">
                        <Image
                          src={
                            item[3] ||
                            `https://via.placeholder.com/300x80/1a1c3f/FFF?text=${encodeURIComponent(
                              item[0]
                            )}`
                          }
                          alt={item[0]}
                          className="genre-item-image"
                          height={80}
                          width={300}
                        />
                        <div className="genre-item-info">
                          <h3 className="genre-item-title">{item[0]}</h3>
                          <p className="genre-item-description">{item[2]}</p>
                        </div>
                      </div>
                    </Link>
                  </div>
                ))}
              </div>
            </section>
          )}

          {genreItems.series && genreItems.series.length > 0 && (
            <section className="genre-section series">
              <div className="genre-section-controls">
                <h2>TV Shows</h2>
                <div className="genre-scroll-controls">
                  <button
                    onClick={() => scroll(seriesRef, "left")}
                    className="genre-scroll-button"
                  >
                    <FontAwesomeIcon icon={faCaretLeft} size="2xl" />
                  </button>
                  <button
                    onClick={() => scroll(seriesRef, "right")}
                    className="genre-scroll-button"
                  >
                    <FontAwesomeIcon icon={faCaretRight} size="2xl" />
                  </button>
                </div>
              </div>
              <div className="genre-items-grid" ref={seriesRef}>
                {genreItems.series.map((item, index) => (
                  <div key={index} className="genre-item-card">
                    <Link href={`/series/${item[0]}`} passHref>
                      <div className="genre-item-link">
                        <Image
                          src={
                            item[3] ||
                            `https://via.placeholder.com/300x80?text=${encodeURIComponent(
                              item[0]
                            )}`
                          }
                          alt={item[0]}
                          className="genre-item-image"
                          width={300}
                          height={80}
                        />
                        <div className="genre-item-info">
                          <h3 className="genre-item-title">{item[0]}</h3>
                          <p className="genre-item-description">{item[2]}</p>
                        </div>
                      </div>
                    </Link>
                  </div>
                ))}
              </div>
            </section>
          )}
        </>
      )}

      {(!genreItems ||
        (genreItems.movies.length === 0 && genreItems.series.length === 0)) && (
        <p className="genre-no-items">
          {selectedGenres.size === 0
            ? "Please select a genre to see results."
            : "No items available for the selected genres."}
        </p>
      )}
    </div>
  );
}