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charset=utf-8\",\n \"access-control-allow-origin\": \"*\",\n \"access-control-allow-headers\": \"*\",\n};\n\n// id catalog -> { providerId, mediaType } trên TMDB\nconst PLATFORM_CATALOGS: Record<\n string,\n { providerId: number; mediaType: \"movie\" | \"tv\" }\n> = {\n tmdb_vi_netflix_series: { providerId: 8, mediaType: \"tv\" },\n tmdb_vi_disney_series: { providerId: 337, mediaType: \"tv\" },\n tmdb_vi_hbomax_series: { providerId: 1899, mediaType: \"tv\" },\n tmdb_vi_appletv_series: { providerId: 350, mediaType: \"tv\" },\n tmdb_vi_amazonprime_series: { providerId: 9, mediaType: \"tv\" },\n tmdb_vi_paramount_series: { providerId: 531, mediaType: \"tv\" },\n tmdb_vi_hulu_series: { providerId: 15, mediaType: \"tv\" },\n tmdb_vi_netflix_movie: { providerId: 8, mediaType: \"movie\" },\n tmdb_vi_disney_movie: { providerId: 337, mediaType: \"movie\" },\n tmdb_vi_hbomax_movie: { providerId: 1899, mediaType: \"movie\" },\n tmdb_vi_appletv_movie: { providerId: 350, mediaType: \"movie\" },\n};\n\nconst MANIFEST = {\n id: \"org.fusion.tmdb.vi.v2\",\n version: \"3.13.0\",\n name: \"TMDB Việt Hóa (Tên + Mô Tả)\",\n description:\n \"Hiển thị tên phim, mô tả, poster, backdrop, logo, tập phim và danh sách phổ biến/theo nền tảng bằng tiếng Việt\",\n resources: [\"meta\", \"catalog\"],\n types: [\"movie\", \"series\"],\n idPrefixes: [\"tt\"],\n catalogs: [\n {\n type: \"movie\",\n id: \"tmdb_vi_movie\",\n name: \"Phim Điện Ảnh Movies\",\n extra: [{ name: \"search\" }],\n },\n {\n type: \"series\",\n id: \"tmdb_vi_series\",\n name: \"Phim Bộ Series\",\n extra: [{ name: \"search\" }],\n },\n {\n type: \"movie\",\n id: \"tmdb_vi_now_playing\",\n name: \"Phim Mới Ra Rạp Movies\",\n },\n {\n type: \"movie\",\n id: \"tmdb_vi_animation_movie\",\n name: \"Phim Hoạt Hình Movies\",\n },\n {\n type: \"series\",\n id: \"tmdb_vi_animation_series\",\n name: \"Phim Hoạt Hình Series\",\n },\n { type: \"movie\", id: \"tmdb_vi_genre_action\", name: \"Hành Động Movies\" },\n { type: \"movie\", id: \"tmdb_vi_genre_adventure\", name: \"Phiêu Lưu Movies\" },\n { type: \"movie\", id: \"tmdb_vi_genre_comedy\", name: \"Hài Hước Movies\" },\n { type: \"movie\", id: \"tmdb_vi_genre_crime\", name: \"Hình Sự Movies\" },\n { type: \"movie\", id: \"tmdb_vi_genre_documentary\", name: \"Tài Liệu Movies\" },\n { type: \"movie\", id: \"tmdb_vi_genre_drama\", name: \"Chính Kịch Movies\" },\n { type: \"movie\", id: \"tmdb_vi_genre_fantasy\", name: \"Kỳ Ảo Movies\" },\n { type: \"movie\", id: \"tmdb_vi_genre_history\", name: \"Lịch Sử Movies\" },\n { type: \"movie\", id: \"tmdb_vi_genre_horror\", name: \"Kinh Dị Movies\" },\n { type: \"movie\", id: \"tmdb_vi_genre_family\", name: \"Gia Đình Movies\" },\n { type: \"movie\", id: \"tmdb_vi_genre_mystery\", name: \"Bí Ẩn Movies\" },\n { type: \"movie\", id: \"tmdb_vi_genre_romance\", name: \"Lãng Mạn Movies\" },\n { type: \"movie\", id: \"tmdb_vi_genre_scifi\", name: \"Viễn Tưởng Movies\" },\n { type: \"movie\", id: \"tmdb_vi_genre_thriller\", name: \"Gây Cấn Movies\" },\n { type: \"movie\", id: \"tmdb_vi_genre_war\", name: \"Chiến Tranh Movies\" },\n { type: \"movie\", id: \"tmdb_vi_genre_western\", name: \"Miền Tây Movies\" },\n { type: \"movie\", id: \"tmdb_vi_netflix_movie\", name: \"Netflix Movies\" },\n { type: \"movie\", id: \"tmdb_vi_disney_movie\", name: \"Disney+ Movies\" },\n { type: \"movie\", id: \"tmdb_vi_hbomax_movie\", name: \"HBO Max Movies\" },\n { type: \"movie\", id: \"tmdb_vi_appletv_movie\", name: \"Apple TV+ Movies\" },\n { type: \"series\", id: \"tmdb_vi_netflix_series\", name: \"Netflix Series\" },\n { type: \"series\", id: \"tmdb_vi_disney_series\", name: \"Disney+ Series\" },\n { type: \"series\", id: \"tmdb_vi_hbomax_series\", name: \"HBO Max Series\" },\n { type: \"series\", id: \"tmdb_vi_appletv_series\", name: \"Apple TV+ Series\" },\n {\n type: \"series\",\n id: \"tmdb_vi_amazonprime_series\",\n name: \"Amazon Prime Series\",\n },\n {\n type: \"series\",\n id: \"tmdb_vi_paramount_series\",\n name: \"Paramount+ Series\",\n },\n { type: \"series\", id: \"tmdb_vi_hulu_series\", name: \"Hulu Series\" },\n ],\n};\n\n// ---------------- Cache đơn giản trong bộ nhớ ----------------\nconst memCache = new Map();\nconst CACHE_TTL_MS = 1000 * 60 * 60 * 6; // 6 tiếng\nconst CATALOG_TTL_MS = 1000 * 60 * 30; // 30 phút\n\nfunction getCached(key: string, ttl = CACHE_TTL_MS) {\n const entry = memCache.get(key);\n if (!entry) return null;\n if (Date.now() - entry.ts > ttl) {\n memCache.delete(key);\n return null;\n }\n return entry.data;\n}\n\nfunction setCached(key: string, data: any) {\n memCache.set(key, { data, ts: Date.now() });\n}\n\n// ---------------- Gọi TMDB an toàn ----------------\nasync function tmdbFetch(\n path: string,\n params: Record = {},\n): Promise {\n try {\n const url = new URL(TMDB_BASE + path);\n url.searchParams.set(\"api_key\", TMDB_KEY);\n for (const [k, v] of Object.entries(params)) url.searchParams.set(k, v);\n\n const res = await fetch(url.toString());\n if (!res.ok) return null;\n return await res.json();\n } catch {\n return null;\n }\n}\n\nasync function findByImdbId(imdbId: string) {\n return await tmdbFetch(`/find/${imdbId}`, {\n external_source: \"imdb_id\",\n language: \"vi-VN\",\n });\n}\n\nasync function getExternalImdbId(\n tmdbId: number,\n mediaType: \"movie\" | \"tv\",\n): Promise {\n const data = await tmdbFetch(`/${mediaType}/${tmdbId}/external_ids`);\n return data?.imdb_id || null;\n}\n\n// ---------------- Tên phim tiếng Việt ----------------\nasync function getTitleFromTranslations(\n tmdbId: number,\n mediaType: \"movie\" | \"tv\",\n): Promise {\n const data = await tmdbFetch(`/${mediaType}/${tmdbId}/translations`);\n const list = data?.translations;\n if (!Array.isArray(list)) return null;\n\n const vi = list.find((t: any) => t.iso_639_1 === \"vi\");\n const name = mediaType === \"movie\" ? vi?.data?.title : vi?.data?.name;\n return name?.trim() || null;\n}\n\nasync function getTitleFromAlternativeTitles(\n tmdbId: number,\n mediaType: \"movie\" | \"tv\",\n): Promise {\n const data = await tmdbFetch(`/${mediaType}/${tmdbId}/alternative_titles`);\n const list = data?.titles || data?.results;\n if (!Array.isArray(list)) return null;\n\n const vn = list.find((t: any) => t.iso_3166_1 === \"VN\");\n const name = vn?.title || vn?.name;\n return name?.trim() || null;\n}\n\nasync function resolveTitle(\n tmdbId: number,\n mediaType: \"movie\" | \"tv\",\n originalTitle: string,\n detailsTitle: string,\n): Promise {\n const original = (originalTitle || \"\").trim();\n const fromDetails = (detailsTitle || \"\").trim();\n\n const t1 = await getTitleFromTranslations(tmdbId, mediaType);\n if (t1 && t1 !== original) return t1;\n\n const t2 = await getTitleFromAlternativeTitles(tmdbId, mediaType);\n if (t2 && t2 !== original) return t2;\n\n return fromDetails || original;\n}\n\n// ---------------- Poster / Backdrop / Logo tiếng Việt ----------------\nasync function getLocalizedImages(\n tmdbId: number,\n mediaType: \"movie\" | \"tv\",\n): Promise<\n { poster: string | null; backdrop: string | null; logo: string | null }\n> {\n const data = await tmdbFetch(`/${mediaType}/${tmdbId}/images`, {\n include_image_language: \"vi,en,null\",\n });\n if (!data) return { poster: null, backdrop: null, logo: null };\n\n function pick(list: any[] | undefined): string | null {\n if (!Array.isArray(list) || list.length === 0) return null;\n const vi = list.find((i) => i.iso_639_1 === \"vi\");\n if (vi) return vi.file_path;\n const noText = list.find((i) => i.iso_639_1 === null);\n if (noText) return noText.file_path;\n const en = list.find((i) => i.iso_639_1 === \"en\");\n if (en) return en.file_path;\n return list[0]?.file_path || null;\n }\n\n function findByLang(\n list: any[] | undefined,\n lang: string | null,\n ): string | null {\n if (!Array.isArray(list)) return null;\n const found = list.find((i) => i.iso_639_1 === lang);\n return found ? found.file_path : null;\n }\n\n const viPoster = findByLang(data.posters, \"vi\");\n const viBackdrop = findByLang(data.backdrops, \"vi\");\n\n const backdrop = viBackdrop || viPoster || pick(data.backdrops);\n\n function pickViOnly(list: any[] | undefined): string | null {\n if (!Array.isArray(list) || list.length === 0) return null;\n const vi = list.find((i) => i.iso_639_1 === \"vi\");\n return vi ? vi.file_path : null;\n }\n\n return {\n poster: pick(data.posters),\n backdrop,\n logo: pickViOnly(data.logos),\n };\n}\n\nfunction mapGenres(details: any): string[] {\n return Array.isArray(details?.genres)\n ? details.genres.map((g: any) => g.name)\n : [];\n}\n\n// ---------------- Danh sách tập phim tiếng Việt (chỉ series) ----------------\nasync function getVideos(imdbId: string, tvId: number, seriesDetails: any) {\n const seasons = Array.isArray(seriesDetails?.seasons)\n ? seriesDetails.seasons\n : [];\n const realSeasons = seasons.filter((s: any) => s.season_number > 0);\n\n const seasonResults = await Promise.all(\n realSeasons.map((s: any) =>\n tmdbFetch(`/tv/${tvId}/season/${s.season_number}`, { language: \"vi-VN\" })\n ),\n );\n\n const videos: any[] = [];\n for (const seasonData of seasonResults) {\n if (!seasonData || !Array.isArray(seasonData.episodes)) continue;\n for (const ep of seasonData.episodes) {\n videos.push({\n id: `${imdbId}:${seasonData.season_number}:${ep.episode_number}`,\n title: ep.name || `Tập ${ep.episode_number}`,\n season: seasonData.season_number,\n episode: ep.episode_number,\n overview: ep.overview || \"\",\n thumbnail: ep.still_path ? `${IMG_BASE}${ep.still_path}` : undefined,\n released: ep.air_date ? new Date(ep.air_date).toISOString() : undefined,\n });\n }\n }\n return videos;\n}\n\n// ---------------- META ----------------\nasync function getCredits(\n tmdbId: number,\n mediaType: \"movie\" | \"tv\",\n): Promise<{ cast: string[]; director?: string }> {\n const data = await tmdbFetch(`/${mediaType}/${tmdbId}/credits`);\n const castList = Array.isArray(data?.cast)\n ? data.cast\n .slice(0, 8)\n .map((c: any) => c.name)\n .filter(Boolean)\n : [];\n\n const crew = Array.isArray(data?.crew) ? data.crew : [];\n const directorEntry = crew.find(\n (c: any) => c.job === \"Director\" || c.job === \"Series Director\",\n );\n\n return { cast: castList, director: directorEntry?.name };\n}\n\nasync function getFallbackOverview(\n tmdbId: number,\n mediaType: \"movie\" | \"tv\",\n): Promise {\n const data = await tmdbFetch(`/${mediaType}/${tmdbId}`, {\n language: \"en-US\",\n });\n const overview = (data?.overview || \"\").trim();\n return overview || null;\n}\n\nasync function buildMeta(\n imdbId: string,\n mediaType: \"movie\" | \"tv\",\n tmdbId: number,\n details: any,\n) {\n const isMovie = mediaType === \"movie\";\n const originalTitle = isMovie\n ? details.original_title\n : details.original_name;\n const detailsTitle = isMovie ? details.title : details.name;\n\n const [name, images, videos, fallbackOverview, credits] = await Promise.all([\n resolveTitle(tmdbId, mediaType, originalTitle || \"\", detailsTitle || \"\"),\n getLocalizedImages(tmdbId, mediaType),\n isMovie ? Promise.resolve(undefined) : getVideos(imdbId, tmdbId, details),\n details.overview\n ? Promise.resolve(null)\n : getFallbackOverview(tmdbId, mediaType),\n getCredits(tmdbId, mediaType),\n ]);\n\n const posterPath = images.poster || details.poster_path;\n const backdropPath = images.backdrop || details.backdrop_path;\n const logoPath = images.logo;\n\n const meta: any = {\n id: imdbId,\n type: isMovie ? \"movie\" : \"series\",\n name: name || \"Không rõ tên\",\n description: details.overview || fallbackOverview ||\n \"Chưa có mô tả cho phim này.\",\n poster: posterPath ? `${IMG_BASE}${posterPath}` : undefined,\n background: backdropPath\n ? `${IMG_BASE_ORIGINAL}${backdropPath}`\n : undefined,\n logo: logoPath ? `${IMG_BASE_ORIGINAL}${logoPath}` : undefined,\n releaseInfo:\n (isMovie ? details.release_date : details.first_air_date)?.substring(\n 0,\n 4,\n ) ||\n undefined,\n imdbRating: typeof details.vote_average === \"number\"\n ? details.vote_average.toFixed(1)\n : undefined,\n genres: mapGenres(details),\n cast: credits.cast.length > 0 ? credits.cast : undefined,\n director: credits.director ? [credits.director] : undefined,\n };\n\n if (!isMovie && Array.isArray(videos) && videos.length > 0) {\n meta.videos = videos;\n }\n\n return meta;\n}\n\nasync function getMeta(imdbId: string, type: \"movie\" | \"series\"): Promise {\n const cacheKey = `meta:${type}:${imdbId}`;\n const cached = getCached(cacheKey);\n if (cached) return cached;\n\n const findRes = await findByImdbId(imdbId);\n if (!findRes) return {};\n\n const mediaType: \"movie\" | \"tv\" = type === \"movie\" ? \"movie\" : \"tv\";\n const results = mediaType === \"movie\"\n ? findRes.movie_results\n : findRes.tv_results;\n if (!Array.isArray(results) || results.length === 0) return {};\n\n const tmdbId = results[0].id;\n const details = await tmdbFetch(`/${mediaType}/${tmdbId}`, {\n language: \"vi-VN\",\n });\n if (!details) return {};\n\n const meta = await buildMeta(imdbId, mediaType, tmdbId, details);\n setCached(cacheKey, meta);\n return meta;\n}\n\n// ---------------- CATALOG ----------------\n// ---------------- Chạy song song có giới hạn (tránh bị TMDB rate-limit) ----------------\nasync function mapWithConcurrency(\n items: T[],\n limit: number,\n fn: (item: T) => Promise,\n): Promise {\n const results: R[] = new Array(items.length);\n let index = 0;\n\n async function worker() {\n while (index < items.length) {\n const current = index++;\n results[current] = await fn(items[current]);\n }\n }\n\n const workers = Array.from(\n { length: Math.min(limit, items.length) },\n () => worker(),\n );\n await Promise.all(workers);\n return results;\n}\n\nasync function buildCatalogItem(item: any, mediaType: \"movie\" | \"tv\") {\n const isMovie = mediaType === \"movie\";\n const originalTitle = isMovie ? item.original_title : item.original_name;\n const listTitle = isMovie ? item.title : item.name;\n\n const [imdbId, name, images] = await Promise.all([\n getExternalImdbId(item.id, mediaType),\n resolveTitle(item.id, mediaType, originalTitle || \"\", listTitle || \"\"),\n getLocalizedImages(item.id, mediaType),\n ]);\n\n if (!imdbId) return null;\n\n const posterPath = images.poster || item.poster_path;\n\n return {\n id: imdbId,\n type: isMovie ? \"movie\" : \"series\",\n name: name || listTitle || originalTitle || \"Không rõ tên\",\n poster: posterPath ? `${IMG_BASE}${posterPath}` : undefined,\n releaseInfo: (isMovie ? item.release_date : item.first_air_date)?.substring(\n 0,\n 4,\n ),\n };\n}\n\n// Bản \"nhẹ\" chỉ dùng cho danh sách search — chỉ cần 1 request lấy imdb_id,\n// không dịch tên/ảnh (việc đó sẽ làm khi mở chi tiết phim qua buildMeta)\nasync function buildSearchItem(item: any, mediaType: \"movie\" | \"tv\") {\n const isMovie = mediaType === \"movie\";\n const imdbId = await getExternalImdbId(item.id, mediaType);\n if (!imdbId) return null;\n\n const title = (isMovie ? item.title : item.name) ||\n (isMovie ? item.original_title : item.original_name);\n\n return {\n id: imdbId,\n type: isMovie ? \"movie\" : \"series\",\n name: title || \"Không rõ tên\",\n poster: item.poster_path ? `${IMG_BASE}${item.poster_path}` : undefined,\n releaseInfo: (isMovie ? item.release_date : item.first_air_date)\n ?.substring(0, 4),\n };\n}\n\n// ---------------- SEARCH (theo tên phim + tên diễn viên) ----------------\nasync function searchTitles(\n query: string,\n mediaType: \"movie\" | \"tv\",\n): Promise {\n const cacheKey = `search:${mediaType}:${query.toLowerCase()}`;\n const cached = getCached(cacheKey, CATALOG_TTL_MS);\n if (cached) return cached;\n\n const [titleData, personData] = await Promise.all([\n tmdbFetch(`/search/${mediaType}`, {\n query,\n language: \"vi-VN\",\n include_adult: \"false\",\n }),\n tmdbFetch(`/search/person`, { query, language: \"vi-VN\" }),\n ]);\n\n const results: any[] = Array.isArray(titleData?.results)\n ? [...titleData.results]\n : [];\n const existingIds = new Set(results.map((r: any) => r.id));\n\n // Nếu từ khóa khớp với tên diễn viên, gộp thêm phim/show họ tham gia\n const persons = Array.isArray(personData?.results) ? personData.results : [];\n if (persons.length > 0) {\n // Ưu tiên người có độ phổ biến cao nhất khớp tên (thường đúng người cần tìm)\n const sortedPersons = [...persons].sort(\n (a: any, b: any) => (b.popularity || 0) - (a.popularity || 0),\n );\n const topPerson = sortedPersons[0];\n\n const creditsPath = mediaType === \"movie\"\n ? `/person/${topPerson.id}/movie_credits`\n : `/person/${topPerson.id}/tv_credits`;\n const creditsData = await tmdbFetch(creditsPath, { language: \"vi-VN\" });\n const cast = Array.isArray(creditsData?.cast) ? creditsData.cast : [];\n\n for (const c of cast) {\n if (!existingIds.has(c.id)) {\n results.push(c);\n existingIds.add(c.id);\n }\n }\n }\n\n // Sắp theo độ phổ biến giảm dần, giới hạn số lượng trả về\n results.sort((a: any, b: any) => (b.popularity || 0) - (a.popularity || 0));\n const limited = results.slice(0, 60);\n\n // Chạy tối đa 5 request cùng lúc để không bị TMDB rate-limit khi\n // diễn viên có nhiều phim (32-64 phim như Gal Gadot)\n const built = await mapWithConcurrency(\n limited,\n 5,\n (r: any) => buildSearchItem(r, mediaType),\n );\n const metas = built.filter(Boolean);\n\n setCached(cacheKey, metas);\n return metas;\n}\n\nasync function discoverGeneral(\n mediaType: \"movie\" | \"tv\",\n page: number,\n strictness: 0 | 1 | 2,\n): Promise {\n const dateField = mediaType === \"movie\"\n ? \"primary_release_date.lte\"\n : \"first_air_date.lte\";\n const sortField = mediaType === \"movie\"\n ? \"release_date.desc\"\n : \"first_air_date.desc\";\n const today = new Date().toISOString().substring(0, 10);\n\n const baseParams: Record = {\n language: \"vi-VN\",\n page: String(page),\n sort_by: sortField,\n [dateField]: today,\n };\n if (strictness === 0) {\n baseParams[\"vote_count.gte\"] = \"50\";\n } else if (strictness === 1) {\n baseParams[\"vote_count.gte\"] = \"10\";\n }\n const data = await tmdbFetch(`/discover/${mediaType}`, baseParams);\n return Array.isArray(data?.results) ? data.results : [];\n}\n\nasync function getPopularCatalog(\n type: \"movie\" | \"series\",\n skip: number,\n): Promise {\n const mediaType: \"movie\" | \"tv\" = type === \"movie\" ? \"movie\" : \"tv\";\n const page = Math.floor(skip / 20) + 1;\n\n const cacheKey = `catalog:newest:${type}:${page}`;\n const cached = getCached(cacheKey, CATALOG_TTL_MS);\n if (cached) return cached;\n\n let results = await discoverGeneral(mediaType, page, 0);\n if (results.length === 0) results = await discoverGeneral(mediaType, page, 1);\n if (results.length === 0) results = await discoverGeneral(mediaType, page, 2);\n\n const built = await mapWithConcurrency(\n results,\n 5,\n (r: any) => buildCatalogItem(r, mediaType),\n );\n const metas = built.filter(Boolean);\n\n setCached(cacheKey, metas);\n return metas;\n}\n\nconst GENRE_CATALOGS: Record<\n string,\n { genreId: number; mediaType: \"movie\" | \"tv\" }\n> = {\n tmdb_vi_animation_movie: { genreId: 16, mediaType: \"movie\" },\n tmdb_vi_animation_series: { genreId: 16, mediaType: \"tv\" },\n tmdb_vi_genre_action: { genreId: 28, mediaType: \"movie\" },\n tmdb_vi_genre_adventure: { genreId: 12, mediaType: \"movie\" },\n tmdb_vi_genre_comedy: { genreId: 35, mediaType: \"movie\" },\n tmdb_vi_genre_crime: { genreId: 80, mediaType: \"movie\" },\n tmdb_vi_genre_documentary: { genreId: 99, mediaType: \"movie\" },\n tmdb_vi_genre_drama: { genreId: 18, mediaType: \"movie\" },\n tmdb_vi_genre_fantasy: { genreId: 14, mediaType: \"movie\" },\n tmdb_vi_genre_history: { genreId: 36, mediaType: \"movie\" },\n tmdb_vi_genre_horror: { genreId: 27, mediaType: \"movie\" },\n tmdb_vi_genre_family: { genreId: 10751, mediaType: \"movie\" },\n tmdb_vi_genre_mystery: { genreId: 9648, mediaType: \"movie\" },\n tmdb_vi_genre_romance: { genreId: 10749, mediaType: \"movie\" },\n tmdb_vi_genre_scifi: { genreId: 878, mediaType: \"movie\" },\n tmdb_vi_genre_thriller: { genreId: 53, mediaType: \"movie\" },\n tmdb_vi_genre_war: { genreId: 10752, mediaType: \"movie\" },\n tmdb_vi_genre_western: { genreId: 37, mediaType: \"movie\" },\n};\n\nasync function discoverByGenre(\n mediaType: \"movie\" | \"tv\",\n genreId: number,\n page: number,\n strictness: 0 | 1 | 2,\n): Promise {\n const dateField = mediaType === \"movie\"\n ? \"primary_release_date.lte\"\n : \"first_air_date.lte\";\n const sortField = mediaType === \"movie\"\n ? \"release_date.desc\"\n : \"first_air_date.desc\";\n const today = new Date().toISOString().substring(0, 10);\n\n const baseParams: Record = {\n language: \"vi-VN\",\n page: String(page),\n sort_by: sortField,\n with_genres: String(genreId),\n [dateField]: today,\n };\n if (strictness === 0) {\n baseParams[\"vote_count.gte\"] = \"50\";\n } else if (strictness === 1) {\n baseParams[\"vote_count.gte\"] = \"10\";\n }\n const data = await tmdbFetch(`/discover/${mediaType}`, baseParams);\n return Array.isArray(data?.results) ? data.results : [];\n}\n\nasync function getGenreCatalog(\n mediaType: \"movie\" | \"tv\",\n genreId: number,\n skip: number,\n): Promise {\n const page = Math.floor(skip / 20) + 1;\n\n const cacheKey = `catalog:genre:${mediaType}:${genreId}:${page}`;\n const cached = getCached(cacheKey, CATALOG_TTL_MS);\n if (cached) return cached;\n\n let results = await discoverByGenre(mediaType, genreId, page, 0);\n if (results.length === 0) {\n results = await discoverByGenre(mediaType, genreId, page, 1);\n }\n if (results.length === 0) {\n results = await discoverByGenre(mediaType, genreId, page, 2);\n }\n\n const built = await mapWithConcurrency(\n results,\n 5,\n (r: any) => buildCatalogItem(r, mediaType),\n );\n const metas = built.filter(Boolean);\n\n setCached(cacheKey, metas);\n return metas;\n}\n\nfunction threeYearsAgoISO(): string {\n const d = new Date();\n d.setFullYear(d.getFullYear() - 3);\n return d.toISOString().substring(0, 10);\n}\n\nasync function discoverByProvider(\n mediaType: \"movie\" | \"tv\",\n providerId: number,\n page: number,\n strictness: 0 | 1 | 2,\n region: string,\n): Promise {\n const gteField = mediaType === \"movie\"\n ? \"primary_release_date.gte\"\n : \"first_air_date.gte\";\n const lteField = mediaType === \"movie\"\n ? \"primary_release_date.lte\"\n : \"first_air_date.lte\";\n const sortField = mediaType === \"movie\"\n ? \"release_date.desc\"\n : \"first_air_date.desc\";\n const today = new Date().toISOString().substring(0, 10);\n\n const baseParams: Record = {\n language: \"vi-VN\",\n page: String(page),\n with_watch_providers: String(providerId),\n watch_region: region,\n sort_by: sortField,\n [lteField]: today,\n };\n if (strictness <= 1) {\n baseParams[gteField] = threeYearsAgoISO();\n }\n if (strictness === 0) {\n baseParams[\"vote_count.gte\"] = \"20\";\n }\n const data = await tmdbFetch(`/discover/${mediaType}`, baseParams);\n return Array.isArray(data?.results) ? data.results : [];\n}\n\nasync function getPlatformCatalog(\n mediaType: \"movie\" | \"tv\",\n providerId: number,\n skip: number,\n): Promise {\n const page = Math.floor(skip / 20) + 1;\n\n const cacheKey = `catalog:platform:${mediaType}:${providerId}:${page}`;\n const cached = getCached(cacheKey, CATALOG_TTL_MS);\n if (cached) return cached;\n\n let results = await discoverByProvider(\n mediaType,\n providerId,\n page,\n 0,\n WATCH_REGION,\n );\n if (results.length === 0) {\n results = await discoverByProvider(\n mediaType,\n providerId,\n page,\n 1,\n WATCH_REGION,\n );\n }\n if (results.length === 0) {\n results = await discoverByProvider(\n mediaType,\n providerId,\n page,\n 2,\n WATCH_REGION,\n );\n }\n\n const built = await mapWithConcurrency(\n results,\n 5,\n (r: any) => buildCatalogItem(r, mediaType),\n );\n const metas = built.filter(Boolean);\n\n setCached(cacheKey, metas);\n return metas;\n}\n\nasync function getNowPlayingCatalog(skip: number): Promise {\n const page = Math.floor(skip / 20) + 1;\n\n const cacheKey = `catalog:now_playing:${page}`;\n const cached = getCached(cacheKey, CATALOG_TTL_MS);\n if (cached) return cached;\n\n const data = await tmdbFetch(`/movie/now_playing`, {\n language: \"vi-VN\",\n page: String(page),\n region: WATCH_REGION,\n });\n const results = Array.isArray(data?.results) ? data.results : [];\n\n const builtNowPlaying = await mapWithConcurrency(\n results,\n 5,\n (r: any) => buildCatalogItem(r, \"movie\"),\n );\n const metas = builtNowPlaying.filter(Boolean);\n\n setCached(cacheKey, metas);\n return metas;\n}\n\nasync function getCatalog(\n catalogId: string,\n type: \"movie\" | \"series\",\n skip: number,\n search?: string,\n): Promise {\n if (search && search.trim()) {\n const mediaType: \"movie\" | \"tv\" = type === \"movie\" ? \"movie\" : \"tv\";\n return searchTitles(search.trim(), mediaType);\n }\n if (catalogId === \"tmdb_vi_movie\" || catalogId === \"tmdb_vi_series\") {\n 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