feat: implement GenrePage component to display movies by genre, including recent, upcoming, and top-rated films; enhance metadata generation for SEO

src/app/odkrywaj/gatunek/[id]/page.tsx

@@ -0,0 +1,163 @@
+import { getMovieGenres, getMoviesByGenre } from "@/lib/tmdb/server";
+import { MovieList } from "@/components/molecules/MovieList";
+import { FaCalendar, FaFire } from "react-icons/fa";
+import { notFound } from "next/navigation";
+import { GenreList } from "@/components/molecules/GenreList";
+import { BackButton } from "@/components/atoms/BackButton";
+
+// 6 hours cache for genre pages.
+export const revalidate = 21600;
+
+type PageProps = {
+  params: Promise<{ id: string }>;
+};
+
+export default async function GenrePage({ params }: PageProps) {
+  const { id } = await params;
+  const genreId = parseInt(id);
+
+  if (isNaN(genreId)) {
+    notFound();
+  }
+
+  const { genres } = await getMovieGenres();
+  const genre = genres.find((g) => g.id === genreId);
+
+  if (!genre) {
+    notFound();
+  }
+
+  const now = new Date();
+
+  // Get genre name and all movie data in parallel.
+  const [recentData, upcomingData, topRatedData] = await Promise.all([
+    getMoviesByGenre(genreId, 1, {
+      sort_by: "release_date.desc",
+      ["release_date.lte"]: `${now.getFullYear()}-${
+        now.getMonth() + 1
+      }-${now.getDate()}`,
+    }),
+    getMoviesByGenre(genreId, 1, {
+      sort_by: "release_date.asc",
+      ["release_date.gte"]: `${now.getFullYear()}-${now.getMonth() + 1}-${
+        now.getDate() + 1
+      } `,
+    }),
+    getMoviesByGenre(genreId, 1, {
+      sort_by: "",
+      vote_count_gte: "100",
+      ["release_date.lte"]: `${now.getFullYear()}-${
+        now.getMonth() + 1
+      }-${now.getDate()}`,
+    }),
+  ]);
+
+  // Convert TMDB movie format to our Movie type.
+  const convertMovies = (movies: any[]) =>
+    movies.map((movie) => ({
+      ...movie,
+      genre_ids: JSON.stringify(movie.genre_ids),
+      seen: false,
+      favorite: false,
+    }));
+
+  const recentMovies = convertMovies(recentData.results);
+  const upcomingMovies = convertMovies(upcomingData.results);
+  const topRatedMovies = convertMovies(topRatedData.results);
+
+  return (
+    <>
+      {/* Hero section with genre name */}
+      <section className="blockp bg-gradient-to-br from-slate-900/50 via-slate-800/30 to-slate-900/50 border-b border-gray-800">
+        {/* Navigation */}
+        <div className="relative">
+          <div className="absolute top-0 left-0 right-0 z-20 px-6">
+            <BackButton />
+          </div>
+        </div>
+
+        <div className="container text-center">
+          <h1 className="text-4xl md:text-6xl font-bold mb-4 bg-gradient-to-r from-purple-400 via-pink-400 to-cyan-400 bg-clip-text text-transparent">
+            {genre.name}
+          </h1>
+          <p className="text-lg text-gray-300 max-w-2xl mx-auto">
+            Odkryj najlepsze filmy z kategorii {genre.name.toLowerCase()}
+          </p>
+          <div className="mt-8 w-32 h-px bg-gradient-to-r from-transparent via-purple-400/50 to-transparent mx-auto" />
+        </div>
+      </section>
+
+      {/* Recent movies section */}
+      <section className="blocks">
+        <MovieList
+          overrideMovies={recentMovies}
+          heading="Najnowsze filmy"
+          loadMore
+          icon={<FaCalendar />}
+          colors="green"
+          showFilters={false}
+          displayType="list"
+        />
+      </section>
+
+      {/* Top rated section */}
+      {upcomingMovies.length > 0 && (
+        <section className="blocks">
+          <MovieList
+            overrideMovies={upcomingMovies}
+            heading="Nadchodzące premiery"
+            loadMore
+            icon={<FaCalendar />}
+            colors="blue"
+            showFilters={false}
+            sortDirection="desc"
+            displayType="list"
+          />
+        </section>
+      )}
+
+      {/* Top rated section */}
+      {topRatedMovies.length > 0 && (
+        <section className="blocks">
+          <MovieList
+            overrideMovies={topRatedMovies}
+            heading="Najpopularniejsze filmy"
+            icon={<FaFire />}
+            colors="red"
+            showFilters={false}
+            displayType="list"
+          />
+        </section>
+      )}
+
+      <GenreList heading="Odkryj inne gatunki" />
+    </>
+  );
+}
+
+export async function generateMetadata({ params }: PageProps) {
+  const { id } = await params;
+  const genreId = parseInt(id);
+
+  if (isNaN(genreId)) {
+    return {
+      title: "Gatunek nie znaleziony",
+    };
+  }
+
+  try {
+    const { genres } = await getMovieGenres();
+    const genre = genres.find((g) => g.id === genreId);
+
+    return {
+      title: genre ? `${genre.name} - Movie Box` : "Gatunek - Movie Box",
+      description: genre
+        ? `Odkryj najlepsze filmy z kategorii ${genre.name}. Najnowsze premiery, popularne tytuły i najwyżej oceniane produkcje.`
+        : "Przeglądaj filmy według gatunków",
+    };
+  } catch (error) {
+    return {
+      title: "Gatunek - Movie Box",
+    };
+  }
+}

src/components/molecules/HeroMovie/index.tsx

@@ -139,7 +139,7 @@ export const HeroMovie: FC<Props> = ({ movieDetails }) => {
                       <div className="flex items-center gap-2 text-gray-300">
                         <FaCalendar className="text-purple-400" />
                         <span>
-                          {new Date(movieDetails.release_date).getFullYear()}
+                          {formatter.formatDate(movieDetails.release_date)}
                         </span>
                       </div>
                     )}

src/components/molecules/MovieList/index.tsx

@@ -98,11 +98,10 @@ export const MovieList: FC<Props> = ({
     return 0;
   });
 
-  sortedMovies = sortedMovies.slice(0, loaded);
-
   if (sortDirection === "desc") {
     sortedMovies = sortedMovies.reverse();
   }
+  sortedMovies = sortedMovies.slice(0, loaded);
 
   const handleFilter = (key?: keyof typeof filter) => {
     setFilter({

src/components/molecules/TrackedMovies/index.tsx

@@ -1,12 +1,26 @@
 "use client";
 import { FC } from "react";
 import { useGlobalStore } from "@/app/store/globalStore";
-import Link from "next/link";
-import { FaCalendar, FaClock, FaStar } from "react-icons/fa";
+import { FaCalendar, FaClock } from "react-icons/fa";
 import { MovieRow } from "@/components/atoms/MovieRow";
+import { Movie } from "@/types/global";
 
-export const TrackedMovies: FC = () => {
-  const { movies } = useGlobalStore();
+type Props = {
+  overrideMovies?: Movie[];
+  daysLimit?: number;
+  labelCurrent?: string;
+  labelUpcoming?: string;
+};
+
+export const TrackedMovies: FC<Props> = ({
+  overrideMovies,
+  daysLimit = 30,
+  labelCurrent = "Aktualnie w kinach",
+  labelUpcoming = "Nadchodzące premiery",
+}) => {
+  const { movies: storeMovies } = useGlobalStore();
+
+  const movies = overrideMovies || storeMovies;
 
   if (movies.length === 0) {
     return null;
@@ -24,7 +38,7 @@ export const TrackedMovies: FC = () => {
 
     return (
       new Date(movie.release_date) <= today &&
-      daysSinceRelease <= 30 &&
+      daysSinceRelease <= daysLimit &&
       !movie.seen
     );
   });
@@ -48,7 +62,7 @@ export const TrackedMovies: FC = () => {
             <div>
               <h3 className="text-green-400 font-medium text-sm mb-3 flex items-center gap-2">
                 <FaClock className="w-4 h-4" />
-                Aktualnie w kinach ({sortedInCinema.length})
+                {labelCurrent} ({sortedInCinema.length})
               </h3>
               <div className="space-y-2">
                 {sortedInCinema.map((movie) => (
@@ -62,7 +76,7 @@ export const TrackedMovies: FC = () => {
             <div>
               <h3 className="text-blue-400 font-medium text-sm mb-3 flex items-center gap-2">
                 <FaCalendar className="w-4 h-4" />
-                Nadchodzące premiery ({sortedUpcoming.length})
+                {labelUpcoming} ({sortedUpcoming.length})
               </h3>
               <div className="space-y-2">
                 {sortedUpcoming.map((movie) => (

src/lib/tmdb/server.ts

@@ -89,3 +89,37 @@ export async function getPersonDetails(
 export async function getMovieGenres(): Promise<{ genres: Genre[] }> {
   return await fetchTmbd("/genre/movie/list?language=pl");
 }
+
+type DiscoverMoviesOptions = Record<string, string | number>;
+
+export async function discoverMovies(
+  options: DiscoverMoviesOptions
+): Promise<SearchResult> {
+  const params = new URLSearchParams();
+
+  // Default language and region for Polish users.
+  params.set("language", "pl-PL");
+  params.set("region", "PL");
+  params.set("with_original_language", "en|pl");
+
+  Object.entries(options).forEach(([key, value]) => {
+    if (value !== undefined) {
+      params.set(key, value.toString());
+    }
+  });
+
+  return await fetchTmbd(`/discover/movie?${params.toString()}`);
+}
+
+export async function getMoviesByGenre(
+  genreId: number,
+  page: number = 1,
+  options: DiscoverMoviesOptions = {}
+): Promise<SearchResult> {
+  return await discoverMovies({
+    with_genres: genreId,
+    sort_by: "release_date.desc",
+    page,
+    ...options,
+  });
+}