3 files changed, 200 insertions, 35 deletions
diff --git a/src/utils/constants.ts b/src/utils/constants.ts
index 21a6db8..8615050 100644
--- a/src/utils/constants.ts
+++ b/src/utils/constants.ts
@@ -1,11 +1,10 @@
 import { config } from "dotenv";
+
 config();
 
 export const ACCEPT_ENCODING_HEADER = "gzip, deflate, br";
-
 export const USER_AGENT_HEADER =
   "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4692.71 Safari/537.36";
-
 export const ACCEPT_HEADER =
   "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9";
 
@@ -16,3 +15,115 @@ export const SRC_BASE_URL = `https://${DOMAIN}`;
 export const SRC_AJAX_URL = `${SRC_BASE_URL}/ajax`;
 export const SRC_HOME_URL = `${SRC_BASE_URL}/home`;
 export const SRC_SEARCH_URL = `${SRC_BASE_URL}/search`;
+
+// <SearchPageFilters>
+export const genresIdMap: Record<string, number> = {
+  action: 1,
+  adventure: 2,
+  cars: 3,
+  comedy: 4,
+  dementia: 5,
+  demons: 6,
+  drama: 8,
+  ecchi: 9,
+  fantasy: 10,
+  game: 11,
+  harem: 35,
+  historical: 13,
+  horror: 14,
+  isekai: 44,
+  josei: 43,
+  kids: 15,
+  magic: 16,
+  "martial-arts": 17,
+  mecha: 18,
+  military: 38,
+  music: 19,
+  mystery: 7,
+  parody: 20,
+  police: 39,
+  psychological: 40,
+  romance: 22,
+  samurai: 21,
+  school: 23,
+  "sci-fi": 24,
+  seinen: 42,
+  shoujo: 25,
+  "shoujo-ai": 26,
+  shounen: 27,
+  "shounen-ai": 28,
+  "slice-of-life": 36,
+  space: 29,
+  sports: 30,
+  "super-power": 31,
+  supernatural: 37,
+  thriller: 41,
+  vampire: 32,
+} as const;
+
+export const typeIdMap: Record<string, number> = {
+  all: 0,
+  movie: 1,
+  tv: 2,
+  ova: 3,
+  ona: 4,
+  special: 5,
+  music: 6,
+} as const;
+
+export const statusIdMap: Record<string, number> = {
+  all: 0,
+  "finished-airing": 1,
+  "currently-airing": 2,
+  "not-yet-aired": 3,
+} as const;
+
+export const ratedIdMap: Record<string, number> = {
+  all: 0,
+  g: 1,
+  pg: 2,
+  "pg-13": 3,
+  r: 4,
+  "r+": 5,
+  rx: 6,
+} as const;
+
+export const scoreIdMap: Record<string, number> = {
+  all: 0,
+  appalling: 1,
+  horrible: 2,
+  "very-bad": 3,
+  bad: 4,
+  average: 5,
+  fine: 6,
+  good: 7,
+  "very-good": 8,
+  great: 9,
+  masterpiece: 10,
+} as const;
+
+export const seasonIdMap: Record<string, number> = {
+  all: 0,
+  spring: 1,
+  summer: 2,
+  fall: 3,
+  winter: 4,
+} as const;
+
+export const languageIdMap: Record<string, number> = {
+  all: 0,
+  sub: 1,
+  dub: 2,
+  "sub-&-dub": 3,
+} as const;
+
+export const sortIdMap: Record<string, string> = {
+  default: "default",
+  "recently-added": "recently_added",
+  "recently-updated": "recently_updated",
+  score: "score",
+  "name-a-z": "name_az",
+  "released-date": "released_date",
+  "most-watched": "most_watched",
+} as const;
+// </SearchPageFilters>
diff --git a/src/utils/index.ts b/src/utils/index.ts
index 42492ef..b514c85 100644
--- a/src/utils/index.ts
+++ b/src/utils/index.ts
@@ -1,33 +1,2 @@
-import {
-  SRC_AJAX_URL,
-  SRC_HOME_URL,
-  SRC_BASE_URL,
-  ACCEPT_HEADER,
-  SRC_SEARCH_URL,
-  USER_AGENT_HEADER,
-  ACCEPT_ENCODING_HEADER,
-} from "./constants.js";
-import {
-  extractAnimes,
-  substringAfter,
-  substringBefore,
-  retrieveServerId,
-  extractTop10Animes,
-  extractMostPopularAnimes,
-} from "./methods.js";
-
-export {
-  SRC_AJAX_URL,
-  SRC_HOME_URL,
-  SRC_BASE_URL,
-  ACCEPT_HEADER,
-  SRC_SEARCH_URL,
-  USER_AGENT_HEADER,
-  ACCEPT_ENCODING_HEADER,
-  extractAnimes,
-  substringAfter,
-  substringBefore,
-  retrieveServerId,
-  extractTop10Animes,
-  extractMostPopularAnimes,
-};
+export * from "./methods.js";
+export * from "./constants.js";
diff --git a/src/utils/methods.ts b/src/utils/methods.ts
index 2e062d7..9d89822 100644
--- a/src/utils/methods.ts
+++ b/src/utils/methods.ts
@@ -5,6 +5,17 @@ import type {
   Top10AnimeTimePeriod,
 } from "../types/anime.js";
 import type { CheerioAPI, SelectorType } from "cheerio";
+import {
+  genresIdMap,
+  languageIdMap,
+  ratedIdMap,
+  scoreIdMap,
+  seasonIdMap,
+  sortIdMap,
+  statusIdMap,
+  typeIdMap,
+} from "./constants.js";
+import { type FilterKeys } from "../types/controllers/animeSearch.js";
 import createHttpError, { HttpError } from "http-errors";
 
 export const extractAnimes = (
@@ -192,6 +203,80 @@ export function retrieveServerId(
   );
 }
 
+function getGenresFilterVal(genreNames: string[]): string | undefined {
+  if (genreNames.length < 1) {
+    return undefined;
+  }
+  return genreNames.map((name) => genresIdMap[name]).join(",");
+}
+
+export function getSearchFilterValue(
+  key: FilterKeys,
+  rawValue: string
+): string | undefined {
+  rawValue = rawValue.trim();
+  if (!rawValue) return undefined;
+
+  switch (key) {
+    case "genres": {
+      return getGenresFilterVal(rawValue.split(","));
+    }
+    case "type": {
+      const val = typeIdMap[rawValue] ?? 0;
+      return val === 0 ? undefined : `${val}`;
+    }
+    case "status": {
+      const val = statusIdMap[rawValue] ?? 0;
+      return val === 0 ? undefined : `${val}`;
+    }
+    case "rated": {
+      const val = ratedIdMap[rawValue] ?? 0;
+      return val === 0 ? undefined : `${val}`;
+    }
+    case "score": {
+      const val = scoreIdMap[rawValue] ?? 0;
+      return val === 0 ? undefined : `${val}`;
+    }
+    case "season": {
+      const val = seasonIdMap[rawValue] ?? 0;
+      return val === 0 ? undefined : `${val}`;
+    }
+    case "language": {
+      const val = languageIdMap[rawValue] ?? 0;
+      return val === 0 ? undefined : `${val}`;
+    }
+    case "sort": {
+      return sortIdMap[rawValue] ?? undefined;
+    }
+    default:
+      return undefined;
+  }
+}
+
+// this fn tackles both start_date and end_date
+export function getSearchDateFilterValue(
+  isStartDate: boolean,
+  rawValue: string
+): string[] | undefined {
+  rawValue = rawValue.trim();
+  if (!rawValue) return undefined;
+
+  const dateRegex = /^\d{4}-([0-9]|1[0-2])-([0-9]|[12][0-9]|3[01])$/;
+  const dateCategory = isStartDate ? "s" : "e";
+  const [year, month, date] = rawValue.split("-");
+
+  if (!dateRegex.test(rawValue)) {
+    return undefined;
+  }
+
+  // sample return -> [sy=2023, sm=10, sd=11]
+  return [
+    Number(year) > 0 ? `${dateCategory}y=${year}` : "",
+    Number(month) > 0 ? `${dateCategory}m=${month}` : "",
+    Number(date) > 0 ? `${dateCategory}d=${date}` : "",
+  ].filter((d) => Boolean(d));
+}
+
 export function substringAfter(str: string, toFind: string) {
   const index = str.indexOf(toFind);
   return index == -1 ? "" : str.substring(index + toFind.length);