"use client";
import { useState, useEffect, useRef } from "react";
import { useRouter } from "next/navigation";
import { FontAwesomeIcon } from "@fortawesome/react-fontawesome";
import {
  faSearch,
  faCaretLeft,
  faCaretRight,
} from "@fortawesome/free-solid-svg-icons";
import { search } from "@/api/searchApi";
import "./searchPage.css";
import MovieCard from "@/components/MovieCard";
import TvShowCard from "@/components/TvShowCard";

const SearchPage = () => {
  const [query, setQuery] = useState("");
  const [results, setResults] = useState({ films: [], tv_series: [] });
  const [loading, setLoading] = useState(false);
  const [error, setError] = useState(null);
  const [debouncedQuery, setDebouncedQuery] = useState("");
  const [loadingDelay, setLoadingDelay] = useState(null);

  const router = useRouter();
  const timeoutRef = useRef(null);
  const moviesRef = useRef(null);
  const seriesRef = useRef(null);

  useEffect(() => {
    if (timeoutRef.current) {
      clearTimeout(timeoutRef.current);
    }

    timeoutRef.current = setTimeout(() => {
      if (debouncedQuery) {
        handleSearch();
      }
    }, 200);

    return () => {
      if (timeoutRef.current) {
        clearTimeout(timeoutRef.current);
      }
    };
  }, [debouncedQuery]);

  const handleSearch = async () => {
    setLoading(true);
    setError(null);

    try {
      const data = await search(debouncedQuery);
      setResults(data);
    } catch (err) {
      setError("Failed to fetch search results.");
    } finally {
      if (loadingDelay) {
        clearTimeout(loadingDelay);
      }
      setLoadingDelay(setTimeout(() => setLoading(false), 800));
    }
  };

  const handleChange = (e) => {
    setQuery(e.target.value);
    setDebouncedQuery(e.target.value);
  };

  const handleItemClick = (path) => {
    router.push(path);
  };

  const scroll = (ref, direction) => {
    if (ref.current) {
      const scrollAmount = direction === "left" ? -400 : 400;
      ref.current.scrollBy({ left: scrollAmount, behavior: "smooth" });
    }
  };

  return (
    <div className="search-page">
      <div className="search-container">
        <input
          type="text"
          value={query}
          onChange={handleChange}
          placeholder="Search for films or TV shows..."
          className="search-input"
        />
        {loading && (
          <div className="loading-indicator">
            <div className="search-icon">
              <FontAwesomeIcon icon={faSearch} size="xl" />
            </div>
            <div className="spinner"></div>
          </div>
        )}
      </div>
      {error && <div className="error-message">{error}</div>}
      <div className="results-container">
        {results.films.length > 0 && (
          <div className="results-section">
            <div className="result-scroll">
              <h2>Films</h2>
              <div className="scroll-controls">
                <button
                  onClick={() => scroll(moviesRef, "left")}
                  className="scroll-button"
                >
                  <FontAwesomeIcon icon={faCaretLeft} size="2xl" />
                </button>
                <button
                  onClick={() => scroll(moviesRef, "right")}
                  className="scroll-button"
                >
                  <FontAwesomeIcon icon={faCaretRight} size="2xl" />
                </button>
              </div>
            </div>
            <ul className="results-list" ref={moviesRef}>
              {results.films.map((film, index) => (
                <li
                  key={index}
                  className="result-item"
                  onClick={() =>
                    handleItemClick(`/movie/${encodeURIComponent(film)}`)
                  }
                >
                  <MovieCard title={film} />
                </li>
              ))}
            </ul>
          </div>
        )}
        {results.tv_series.length > 0 && (
          <div className="results-section">
            <div className="result-scroll">
              <h2>TV Series</h2>
              <div className="scroll-controls">
                <button
                  onClick={() => scroll(seriesRef, "left")}
                  className="scroll-button"
                >
                  <FontAwesomeIcon icon={faCaretLeft} size="2xl" />
                </button>
                <button
                  onClick={() => scroll(seriesRef, "right")}
                  className="scroll-button"
                >
                  <FontAwesomeIcon icon={faCaretRight} size="2xl" />
                </button>
              </div>
            </div>
            <ul className="results-list" ref={seriesRef}>
              {results.tv_series.map((series, index) => (
                <li
                  key={index}
                  className="result-item"
                  onClick={() =>
                    handleItemClick(`/tvshow/${encodeURIComponent(series)}`)
                  }
                >
                  <TvShowCard title={series} />
                </li>
              ))}
            </ul>
          </div>
        )}
      </div>
    </div>
  );
};

export default SearchPage;