refactor: reduce cognitive complexity for sprite-parser

[skip publish]

Author: favna

src/lib/utils/sprite-parser.ts

@@ -22,7 +22,7 @@ interface ParseSpeciesForSpriteParams {
   specialSprite?: string;
 }
 
-const MegaSpriteRegex = /^(.+)-(x|y)$/g;
+const MegaSpriteRegex = /^(.+)-([xy])$/g;
 const SpriteUrls = {
   baseUrl: 'https://play.pokemonshowdown.com/sprites/',
   animatedShinyBackSprites: 'ani-back-shiny/',
@@ -36,6 +36,12 @@ const Gen9SpriteUrls = {
   animatedSprites: 'gen5/',
   animatedShinySprites: 'gen5-shiny/'
 };
+const afdSpriteUrls = {
+  animatedShinyBackSprites: 'afd-back-shiny/',
+  animatedBackSprites: 'afd-back/',
+  animatedSprites: 'afd/',
+  animatedShinySprites: 'afd-shiny/'
+};
 
 /**
  * Parses the species information to determine the appropriate sprite URL based on the given parameters.
@@ -53,10 +59,12 @@ export function parseSpeciesForSprite({
   shiny = false,
   backSprite = false
 }: ParseSpeciesForSpriteParams): string {
-  if (shiny && backSprite && specialShinyBackSprite) return specialShinyBackSprite;
-  if (backSprite && specialBackSprite) return specialBackSprite;
-  if (shiny && specialShinySprite) return specialShinySprite;
-  if (specialSprite) return specialSprite;
+  if (isAprilFools()) {
+    return parseAsAfd(pokemonName, baseSpecies, shiny, backSprite);
+  }
+
+  const parsedSpecialSprite = parseSpecialSprites(specialSprite, specialShinySprite, specialBackSprite, specialShinyBackSprite, shiny, backSprite);
+  if (parsedSpecialSprite) return parsedSpecialSprite;
 
   if (!baseSpecies) {
     pokemonName = toLowerSingleWordCase(pokemonName);
@@ -68,19 +76,65 @@ export function parseSpeciesForSprite({
 
   // TODO: Remove when Showdown adds GIFs of Gen 9 Pokémon
   // Parse differently for generation 9 (Number 906 is sprigatito)
-  if (pokemonNumber >= 906 || pokemonName === 'ursaluna-bloodmoon') {
-    const pokemonPng = `${pokemonName}.png`;
+  if (pokemonNumber >= 906 || pokemonName === 'ursaluna-bloodmoon') return parsePngSprite(pokemonName, shiny, backSprite);
 
-    if (shiny && backSprite) return SpriteUrls.baseUrl + Gen9SpriteUrls.animatedShinyBackSprites + pokemonPng;
-    if (backSprite) return SpriteUrls.baseUrl + Gen9SpriteUrls.animatedBackSprites + pokemonPng;
-    if (shiny) return SpriteUrls.baseUrl + Gen9SpriteUrls.animatedShinySprites + pokemonPng;
-    return SpriteUrls.baseUrl + Gen9SpriteUrls.animatedSprites + pokemonPng;
-  }
+  return parseGifSprite(pokemonName, shiny, backSprite);
+}
+
+function parseSpecialSprites(
+  specialSprite: string | undefined,
+  specialShinySprite: string | undefined,
+  specialBackSprite: string | undefined,
+  specialShinyBackSprite: string | undefined,
+  shiny: boolean,
+  backSprite: boolean
+) {
+  if (shiny && backSprite && specialShinyBackSprite) return specialShinyBackSprite;
+  if (backSprite && specialBackSprite) return specialBackSprite;
+  if (shiny && specialShinySprite) return specialShinySprite;
+  if (specialSprite) return specialSprite;
+
+  return null;
+}
 
+function parsePngSprite(pokemonName: string, shiny: boolean, backSprite: boolean) {
+  const pokemonPng = `${pokemonName}.png`;
+
+  if (shiny && backSprite) return SpriteUrls.baseUrl + Gen9SpriteUrls.animatedShinyBackSprites + pokemonPng;
+  if (backSprite) return SpriteUrls.baseUrl + Gen9SpriteUrls.animatedBackSprites + pokemonPng;
+  if (shiny) return SpriteUrls.baseUrl + Gen9SpriteUrls.animatedShinySprites + pokemonPng;
+  return SpriteUrls.baseUrl + Gen9SpriteUrls.animatedSprites + pokemonPng;
+}
+
+function parseGifSprite(pokemonName: string, shiny: boolean, backSprite: boolean) {
   const pokemonGif = `${pokemonName}.gif`;
 
   if (shiny && backSprite) return SpriteUrls.baseUrl + SpriteUrls.animatedShinyBackSprites + pokemonGif;
   if (backSprite) return SpriteUrls.baseUrl + SpriteUrls.animatedBackSprites + pokemonGif;
   if (shiny) return SpriteUrls.baseUrl + SpriteUrls.animatedShinySprites + pokemonGif;
   return SpriteUrls.baseUrl + SpriteUrls.animatedSprites + pokemonGif;
 }
+
+const APRIL = 3 as const;
+const FIRST = 1 as const;
+function isAprilFools() {
+  const currentDate = new Date();
+  return currentDate.getMonth() === APRIL && currentDate.getDate() === FIRST;
+}
+
+function parseAsAfd(pokemonName: string, baseSpecies: string | undefined, shiny: boolean, backSprite: boolean) {
+  if (!baseSpecies) {
+    pokemonName = toLowerSingleWordCase(pokemonName);
+  }
+
+  if (pokemonName.match(MegaSpriteRegex)) {
+    pokemonName = pokemonName.replace(MegaSpriteRegex, '$1$2');
+  }
+
+  const pokemonGif = `${pokemonName}.png`;
+
+  if (shiny && backSprite) return SpriteUrls.baseUrl + afdSpriteUrls.animatedShinyBackSprites + pokemonGif;
+  if (backSprite) return SpriteUrls.baseUrl + afdSpriteUrls.animatedBackSprites + pokemonGif;
+  if (shiny) return SpriteUrls.baseUrl + afdSpriteUrls.animatedShinySprites + pokemonGif;
+  return SpriteUrls.baseUrl + afdSpriteUrls.animatedSprites + pokemonGif;
+}