import { getConfiguredImageService, imageConfig } from '../chunks/_astro_assets_CEb4NYTX.mjs';
import { i as isRemotePath } from '../chunks/consts_Cbtw3f-9.mjs';
import * as mime from 'mrmime';
export { renderers } from '../renderers.mjs';

function matchPattern(url, remotePattern) {
  return matchProtocol(url, remotePattern.protocol) && matchHostname(url, remotePattern.hostname, true) && matchPort(url, remotePattern.port) && matchPathname(url, remotePattern.pathname, true);
}
function matchPort(url, port) {
  return !port || port === url.port;
}
function matchProtocol(url, protocol) {
  return !protocol || protocol === url.protocol.slice(0, -1);
}
function matchHostname(url, hostname, allowWildcard = false) {
  if (!hostname) {
    return true;
  } else if (!allowWildcard || !hostname.startsWith("*")) {
    return hostname === url.hostname;
  } else if (hostname.startsWith("**.")) {
    const slicedHostname = hostname.slice(2);
    return slicedHostname !== url.hostname && url.hostname.endsWith(slicedHostname);
  } else if (hostname.startsWith("*.")) {
    const slicedHostname = hostname.slice(1);
    const additionalSubdomains = url.hostname.replace(slicedHostname, "").split(".").filter(Boolean);
    return additionalSubdomains.length === 1;
  }
  return false;
}
function matchPathname(url, pathname, allowWildcard = false) {
  if (!pathname) {
    return true;
  } else if (!allowWildcard || !pathname.endsWith("*")) {
    return pathname === url.pathname;
  } else if (pathname.endsWith("/**")) {
    const slicedPathname = pathname.slice(0, -2);
    return slicedPathname !== url.pathname && url.pathname.startsWith(slicedPathname);
  } else if (pathname.endsWith("/*")) {
    const slicedPathname = pathname.slice(0, -1);
    const additionalPathChunks = url.pathname.replace(slicedPathname, "").split("/").filter(Boolean);
    return additionalPathChunks.length === 1;
  }
  return false;
}
function isRemoteAllowed(src, {
  domains,
  remotePatterns
}) {
  if (!URL.canParse(src)) {
    return false;
  }
  const url = new URL(src);
  return domains.some((domain) => matchHostname(url, domain)) || remotePatterns.some((remotePattern) => matchPattern(url, remotePattern));
}

const fnv1a52 = (str) => {
  const len = str.length;
  let i = 0, t0 = 0, v0 = 8997, t1 = 0, v1 = 33826, t2 = 0, v2 = 40164, t3 = 0, v3 = 52210;
  while (i < len) {
    v0 ^= str.charCodeAt(i++);
    t0 = v0 * 435;
    t1 = v1 * 435;
    t2 = v2 * 435;
    t3 = v3 * 435;
    t2 += v0 << 8;
    t3 += v1 << 8;
    t1 += t0 >>> 16;
    v0 = t0 & 65535;
    t2 += t1 >>> 16;
    v1 = t1 & 65535;
    v3 = t3 + (t2 >>> 16) & 65535;
    v2 = t2 & 65535;
  }
  return (v3 & 15) * 281474976710656 + v2 * 4294967296 + v1 * 65536 + (v0 ^ v3 >> 4);
};
const etag = (payload, weak = false) => {
  const prefix = weak ? 'W/"' : '"';
  return prefix + fnv1a52(payload).toString(36) + payload.length.toString(36) + '"';
};

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 });
  }
};

const _page = /*#__PURE__*/Object.freeze(/*#__PURE__*/Object.defineProperty({
  __proto__: null,
  GET
}, Symbol.toStringTag, { value: 'Module' }));

const page = () => _page;

export { page };