Consolidate static param functions

app/film/[simulation]/image/route.tsx

@@ -10,23 +10,14 @@ import { getIBMPlexMono } from '@/app/font';
 import { ImageResponse } from 'next/og';
 import { getImageResponseCacheControlHeaders } from '@/image-response/cache';
 import { getUniqueFilmSimulations } from '@/photo/db/query';
-import {
-  shouldGenerateStaticParamsForCategory,
-  staticallyGenerateCategory,
-} from '@/category/server';
+import { staticallyGenerateCategoryIfConfigured } from '@/category/server';
 
-export let generateStaticParams:
-  (() => Promise<{ simulation: FilmSimulation }[]>) | undefined = undefined;
-
-if (shouldGenerateStaticParamsForCategory('films', 'image')) {
-  generateStaticParams = () =>
-    staticallyGenerateCategory(
+export const generateStaticParams = staticallyGenerateCategoryIfConfigured(
   'films',
   'image',
   getUniqueFilmSimulations,
   simulations => simulations.map(({ simulation }) => ({ simulation })),
-    );
-}
+);
 
 export async function GET(
   _: Request,

app/film/[simulation]/page.tsx

@@ -7,26 +7,17 @@ import { Metadata } from 'next/types';
 import { cache } from 'react';
 import { PATH_ROOT } from '@/app/paths';
 import { redirect } from 'next/navigation';
-import {
-  shouldGenerateStaticParamsForCategory,
-  staticallyGenerateCategory,
-} from '@/category/server';
+import { staticallyGenerateCategoryIfConfigured } from '@/category/server';
 
 const getPhotosFilmSimulationDataCachedCached =
   cache(getPhotosFilmSimulationDataCached);
 
-export let generateStaticParams:
-  (() => Promise<{ simulation: FilmSimulation }[]>) | undefined = undefined;
-
-if (shouldGenerateStaticParamsForCategory('films', 'page')) {
-  generateStaticParams = () =>
-    staticallyGenerateCategory(
+export const generateStaticParams = staticallyGenerateCategoryIfConfigured(
   'films',
   'page',
   getUniqueFilmSimulations,
   simulations => simulations.map(({ simulation }) => ({ simulation })),
-    );
-}
+);
 
 interface FilmSimulationProps {
   params: Promise<{ simulation: FilmSimulation }>

app/focal/[focal]/image/route.tsx

@@ -10,24 +10,15 @@ import FocalLengthImageResponse from
   '@/image-response/FocalLengthImageResponse';
 import { formatFocalLength, getFocalLengthFromString } from '@/focal';
 import { getUniqueFocalLengths } from '@/photo/db/query';
-import {
-  shouldGenerateStaticParamsForCategory,
-  staticallyGenerateCategory,
-} from '@/category/server';
+import { staticallyGenerateCategoryIfConfigured } from '@/category/server';
 
-export let generateStaticParams:
-  (() => Promise<{ focal: string }[]>) | undefined = undefined;
-
-if (shouldGenerateStaticParamsForCategory('focal-lengths', 'image')) {
-  generateStaticParams = () =>
-    staticallyGenerateCategory(
+export const generateStaticParams = staticallyGenerateCategoryIfConfigured(
   'focal-lengths',
   'image',
   getUniqueFocalLengths,
   focalLengths => focalLengths
     .map(({ focal }) => ({ focal: formatFocalLength(focal)! })),
-    );
-}
+);
 
 export async function GET(
   _: Request,

app/focal/[focal]/page.tsx

@@ -7,10 +7,7 @@ import { PATH_ROOT } from '@/app/paths';
 import type { Metadata } from 'next';
 import { redirect } from 'next/navigation';
 import { cache } from 'react';
-import {
-  shouldGenerateStaticParamsForCategory,
-  staticallyGenerateCategory,
-} from '@/category/server';
+import { staticallyGenerateCategoryIfConfigured } from '@/category/server';
 
 const getPhotosFocalDataCachedCached = cache((focal: number) =>
   getPhotosFocalLengthDataCached({
@@ -18,19 +15,13 @@ const getPhotosFocalDataCachedCached = cache((focal: number) =>
     limit: INFINITE_SCROLL_GRID_INITIAL,
   }));
 
-export let generateStaticParams:
-  (() => Promise<{ focal: string }[]>) | undefined = undefined;
-
-if (shouldGenerateStaticParamsForCategory('focal-lengths', 'page')) {
-  generateStaticParams = () =>
-    staticallyGenerateCategory(
+export const generateStaticParams = staticallyGenerateCategoryIfConfigured(
   'focal-lengths',
   'page',
   getUniqueFocalLengths,
   focalLengths => focalLengths
     .map(({ focal }) => ({ focal: focal.toString() })),
-    );
-}
+);
 
 interface FocalLengthProps {
   params: Promise<{ focal: string }>

app/lens/[make]/[model]/image/route.tsx

@@ -9,28 +9,18 @@ import { getImageResponseCacheControlHeaders } from '@/image-response/cache';
 import { getUniqueLenses } from '@/photo/db/query';
 import {
   getLensFromParams,
-  Lens,
   LensProps,
   safelyGenerateLensStaticParams,
 } from '@/lens';
 import LensImageResponse from '@/image-response/LensImageResponse';
-import {
-  shouldGenerateStaticParamsForCategory,
-  staticallyGenerateCategory,
-} from '@/category/server';
+import { staticallyGenerateCategoryIfConfigured } from '@/category/server';
 
-export let generateStaticParams:
-  (() => Promise<Lens[]>) | undefined = undefined;
-
-if (shouldGenerateStaticParamsForCategory('lenses', 'image')) {
-  generateStaticParams = () =>
-    staticallyGenerateCategory(
+export const generateStaticParams = staticallyGenerateCategoryIfConfigured(
   'lenses',
   'image',
   getUniqueLenses,
   safelyGenerateLensStaticParams,
-    );
-}
+);
 
 export async function GET(
   _: Request,

app/lens/[make]/[model]/page.tsx

@@ -7,13 +7,11 @@ import { getPhotosLensDataCached } from '@/lens/data';
 import LensOverview from '@/lens/LensOverview';
 import {
   getLensFromParams,
-  Lens,
   LensProps,
   safelyGenerateLensStaticParams,
 } from '@/lens';
 import {
-  shouldGenerateStaticParamsForCategory,
-  staticallyGenerateCategory,
+  staticallyGenerateCategoryIfConfigured,
 } from '@/category/server';
 
 const getPhotosLensDataCachedCached = cache((
@@ -25,18 +23,12 @@ const getPhotosLensDataCachedCached = cache((
   INFINITE_SCROLL_GRID_INITIAL,
 ));
 
-export let generateStaticParams:
-  (() => Promise<Lens[]>) | undefined = undefined;
-
-if (shouldGenerateStaticParamsForCategory('lenses', 'page')) {
-  generateStaticParams = () =>
-    staticallyGenerateCategory(
+export const generateStaticParams = staticallyGenerateCategoryIfConfigured(
   'lenses',
   'page',
   getUniqueLenses,
   safelyGenerateLensStaticParams,
-    );
-}
+);
 
 export async function generateMetadata({
   params,

app/recipe/[recipe]/image/route.tsx

@@ -8,23 +8,14 @@ import { ImageResponse } from 'next/og';
 import { getImageResponseCacheControlHeaders } from '@/image-response/cache';
 import { getUniqueRecipes } from '@/photo/db/query';
 import RecipeImageResponse from '@/image-response/RecipeImageResponse';
-import {
-  shouldGenerateStaticParamsForCategory,
-  staticallyGenerateCategory,
-} from '@/category/server';
+import { staticallyGenerateCategoryIfConfigured } from '@/category/server';
 
-export let generateStaticParams:
-  (() => Promise<{ recipe: string }[]>) | undefined = undefined;
-
-if (shouldGenerateStaticParamsForCategory('recipes', 'image')) {
-  generateStaticParams = () =>
-    staticallyGenerateCategory(
+export const generateStaticParams = staticallyGenerateCategoryIfConfigured(
   'recipes',
   'image',
   getUniqueRecipes,
   recipes => recipes.map(({ recipe }) => ({ recipe })),
-    );
-}
+);
 
 export async function GET(
   _: Request,

app/recipe/[recipe]/page.tsx

@@ -7,25 +7,16 @@ import { cache } from 'react';
 import { generateMetaForRecipe } from '@/recipe';
 import RecipeOverview from '@/recipe/RecipeOverview';
 import { getPhotosRecipeDataCached } from '@/recipe/data';
-import {
-  shouldGenerateStaticParamsForCategory,
-  staticallyGenerateCategory,
-} from '@/category/server';
+import { staticallyGenerateCategoryIfConfigured } from '@/category/server';
 
 const getPhotosRecipeDataCachedCached = cache(getPhotosRecipeDataCached);
 
-export let generateStaticParams:
-  (() => Promise<{ recipe: string }[]>) | undefined = undefined;
-
-if (shouldGenerateStaticParamsForCategory('recipes', 'page')) {
-  generateStaticParams = () =>
-    staticallyGenerateCategory(
+export const generateStaticParams = staticallyGenerateCategoryIfConfigured(
   'recipes',
   'page',
   getUniqueRecipes,
   recipes => recipes.map(({ recipe }) => ({ recipe })),
-    );
-}
+);
 
 interface RecipeProps {
   params: Promise<{ recipe: string }>

app/shot-on/[make]/[model]/image/route.tsx

@@ -1,5 +1,5 @@
 import { getPhotosCached } from '@/photo/cache';
-import { Camera, CameraProps, formatCameraParams } from '@/camera';
+import { CameraProps, formatCameraParams } from '@/camera';
 import {
   IMAGE_OG_DIMENSION_SMALL,
   MAX_PHOTOS_TO_SHOW_PER_CATEGORY,
@@ -9,23 +9,14 @@ import { getIBMPlexMono } from '@/app/font';
 import { ImageResponse } from 'next/og';
 import { getImageResponseCacheControlHeaders } from '@/image-response/cache';
 import { getUniqueCameras } from '@/photo/db/query';
-import {
-  shouldGenerateStaticParamsForCategory,
-  staticallyGenerateCategory,
-} from '@/category/server';
+import { staticallyGenerateCategoryIfConfigured } from '@/category/server';
 
-export let generateStaticParams:
-  (() => Promise<Camera[]>) | undefined = undefined;
-
-if (shouldGenerateStaticParamsForCategory('cameras', 'image')) {
-  generateStaticParams = () =>
-    staticallyGenerateCategory(
+export const generateStaticParams = staticallyGenerateCategoryIfConfigured(
   'cameras',
   'image',
   getUniqueCameras,
   cameras => cameras.map(({ camera }) => camera),
-    );
-}
+);
 
 export async function GET(
   _: Request,

app/shot-on/[make]/[model]/page.tsx

@@ -1,15 +1,12 @@
 import { Metadata } from 'next/types';
-import { Camera, CameraProps } from '@/camera';
+import { CameraProps } from '@/camera';
 import { generateMetaForCamera } from '@/camera/meta';
 import { INFINITE_SCROLL_GRID_INITIAL } from '@/photo';
 import { getPhotosCameraDataCached } from '@/camera/data';
 import CameraOverview from '@/camera/CameraOverview';
 import { cache } from 'react';
 import { getUniqueCameras } from '@/photo/db/query';
-import {
-  shouldGenerateStaticParamsForCategory,
-  staticallyGenerateCategory,
-} from '@/category/server';
+import { staticallyGenerateCategoryIfConfigured } from '@/category/server';
 
 const getPhotosCameraDataCachedCached = cache((
   make: string,
@@ -20,18 +17,12 @@ const getPhotosCameraDataCachedCached = cache((
   INFINITE_SCROLL_GRID_INITIAL,
 ));
 
-export let generateStaticParams:
-  (() => Promise<Camera[]>) | undefined = undefined;
-
-if (shouldGenerateStaticParamsForCategory('cameras', 'page')) {
-  generateStaticParams = () =>
-    staticallyGenerateCategory(
+export const generateStaticParams = staticallyGenerateCategoryIfConfigured(
   'cameras',
   'page',
   getUniqueCameras,
   cameras => cameras.map(({ camera }) => camera),
-    );
-}
+);
 
 export async function generateMetadata({
   params,

app/tag/[tag]/image/route.tsx

@@ -8,23 +8,14 @@ import { getIBMPlexMono } from '@/app/font';
 import { ImageResponse } from 'next/og';
 import { getImageResponseCacheControlHeaders } from '@/image-response/cache';
 import { getUniqueTags } from '@/photo/db/query';
-import {
-  shouldGenerateStaticParamsForCategory,
-  staticallyGenerateCategory,
-} from '@/category/server';
+import { staticallyGenerateCategoryIfConfigured } from '@/category/server';
 
-export let generateStaticParams:
-  (() => Promise<{ tag: string }[]>) | undefined = undefined;
-
-if (shouldGenerateStaticParamsForCategory('tags', 'image')) {
-  generateStaticParams = () =>
-    staticallyGenerateCategory(
+export const generateStaticParams = staticallyGenerateCategoryIfConfigured(
   'tags',
   'image',
   getUniqueTags,
   tags => tags.map(({ tag }) => ({ tag })),
-    );
-}
+);
 
 export async function GET(
   _: Request,

app/tag/[tag]/page.tsx

@@ -7,26 +7,17 @@ import { getPhotosTagDataCached } from '@/tag/data';
 import type { Metadata } from 'next';
 import { redirect } from 'next/navigation';
 import { cache } from 'react';
-import {
-  shouldGenerateStaticParamsForCategory,
-  staticallyGenerateCategory,
-} from '@/category/server';
+import { staticallyGenerateCategoryIfConfigured } from '@/category/server';
 
 const getPhotosTagDataCachedCached = cache((tag: string) =>
   getPhotosTagDataCached({ tag, limit: INFINITE_SCROLL_GRID_INITIAL}));
 
-export let generateStaticParams:
-  (() => Promise<{ tag: string }[]>) | undefined = undefined;
-
-if (shouldGenerateStaticParamsForCategory('tags', 'page')) {
-  generateStaticParams = () =>
-    staticallyGenerateCategory(
+export const generateStaticParams = staticallyGenerateCategoryIfConfigured(
   'tags',
   'page',
   getUniqueTags,
   tags => tags.map(({ tag }) => ({ tag })),
-    );
-}
+);
 
 interface TagProps {
   params: Promise<{ tag: string }>

src/category/server.ts

@@ -11,7 +11,7 @@ import { depluralize, pluralize } from '@/utility/string';
 
 type StaticOutput = 'page' | 'image';
 
-export const shouldGenerateStaticParamsForCategory = (
+const shouldGenerateStaticParamsForCategory = (
   key: CategoryKey,
   type: StaticOutput,
 ): boolean =>
@@ -21,12 +21,14 @@ export const shouldGenerateStaticParamsForCategory = (
     (type === 'image' && STATICALLY_OPTIMIZED_PHOTO_CATEGORY_OG_IMAGES)
   );
 
-export const staticallyGenerateCategory = async <T, K>(
+export const staticallyGenerateCategoryIfConfigured = <T, K>(
   key: CategoryKey,
   type: StaticOutput,
   getData: () => Promise<T[]>,
   formatData: (data: T[]) => K[],
-): Promise<K[]> => {
+): (() => Promise<K[]>) | undefined =>
+    shouldGenerateStaticParamsForCategory(key, type)
+      ? async () => {
         const data = (await getData()).slice(0, GENERATE_STATIC_PARAMS_LIMIT);
 
         if (IS_BUILDING) {
@@ -35,4 +37,5 @@ export const staticallyGenerateCategory = async <T, K>(
         }
 
         return formatData(data);
-};
+      }
+      : undefined;