blitzkit/packages/website/src/pages/[...chunk_api]/flags/fade/[id].webp.ts

import sharp from "sharp";
import type { APIContext, GetStaticPathsItem } from "astro";
import { mixStaticPaths } from "../../../../core/blitzkit/mixStaticPaths";
import { vfs } from "../../../../core/blitzkit/vfs";
import { getStaticPaths as _getStaticPaths } from "../../_index";

export const getStaticPaths = mixStaticPaths(_getStaticPaths, async () => {
  const paths: GetStaticPathsItem[] = [];

  const fadedFiles = await vfs
    .dir(`Data/Gfx/Lobby/flags`)
    .then((files) =>
      files.filter(
        (flag) =>
          flag.startsWith("flag_filter_") && flag.endsWith("@2x.packed.webp"),
      ),
    );

  for (const flag of fadedFiles) {
    const path = `Data/Gfx/Lobby/flags/${flag}`;
    const id = flag.match(/flag_filter_(.+)@2x\.packed\.webp/)![1];

    paths.push({
      params: { id },
      props: { path },
    });
  }

  return paths;
});

export async function GET({ props }: APIContext<{ path: string }>) {
  const bytes = await sharp(new Uint8Array(await vfs.file(props.path)))
    .trim({ background: { r: 0, g: 0, b: 0, alpha: 0 }, threshold: 1 })
    .webp()
    .toBuffer();

  return new Response(new Uint8Array(bytes));
}