astro/dist/assets/endpoint/generic.js

Astro is a modern site builder with web best practices, performance, and DX front-of-mind.

import { imageConfig } from "astro:assets";
import { isRemotePath } from "@astrojs/internal-helpers/path";
import * as mime from "mrmime";
import { getConfiguredImageService } from "../internal.js";
import { etag } from "../utils/etag.js";
import { isRemoteAllowed } from "../utils/remotePattern.js";
async function loadRemoteImage(src, headers) {
  try {
    const res = await fetch(src, {
      // Forward all headers from the original request
      headers
    });
    if (!res.ok) {
      return void 0;
    }
    return await res.arrayBuffer();
  } catch {
    return void 0;
  }
}
const GET = async ({ request }) => {
  try {
    const imageService = await getConfiguredImageService();
    if (!("transform" in imageService)) {
      throw new Error("Configured image service is not a local service");
    }
    const url = new URL(request.url);
    const transform = await imageService.parseURL(url, imageConfig);
    if (!transform?.src) {
      throw new Error("Incorrect transform returned by `parseURL`");
    }
    let inputBuffer = void 0;
    const isRemoteImage = isRemotePath(transform.src);
    const sourceUrl = isRemoteImage ? new URL(transform.src) : new URL(transform.src, url.origin);
    if (isRemoteImage && isRemoteAllowed(transform.src, imageConfig) === false) {
      return new Response("Forbidden", { status: 403 });
    }
    inputBuffer = await loadRemoteImage(sourceUrl, isRemoteImage ? new Headers() : request.headers);
    if (!inputBuffer) {
      return new Response("Not Found", { status: 404 });
    }
    const { data, format } = await imageService.transform(
      new Uint8Array(inputBuffer),
      transform,
      imageConfig
    );
    return new Response(data, {
      status: 200,
      headers: {
        "Content-Type": mime.lookup(format) ?? `image/${format}`,
        "Cache-Control": "public, max-age=31536000",
        ETag: etag(data.toString()),
        Date: (/* @__PURE__ */ new Date()).toUTCString()
      }
    });
  } catch (err) {
    console.error("Could not process image request:", err);
    return new Response(`Server Error: ${err}`, { status: 500 });
  }
};
export {
  GET
};