import path from "node:path";
import url from "node:url";
import fs from "node:fs";
import { appendForwardSlash } from "@astrojs/internal-helpers/path";
const STATIC_HEADERS_FILE = "_headers.json";
function resolveClientDir(options) {
  const clientURLRaw = new URL(options.client);
  const serverURLRaw = new URL(options.server);
  const rel = path.relative(url.fileURLToPath(serverURLRaw), url.fileURLToPath(clientURLRaw));
  const serverFolder = path.basename(options.server);
  let serverEntryFolderURL = path.dirname(import.meta.url);
  let previous = "";
  while (!serverEntryFolderURL.endsWith(serverFolder)) {
    if (serverEntryFolderURL === previous) {
      throw new Error(
        `[@astrojs/node] Could not find the server directory "${serverFolder}" by walking up from "${import.meta.url}". This can happen when the server entry point is bundled into a single file (e.g. with esbuild) so that import.meta.url no longer contains the original "${serverFolder}" path segment. When bundling the server entry, make sure the output path contains a "${serverFolder}" directory segment, or avoid bundling the server entry entirely.`
      );
    }
    previous = serverEntryFolderURL;
    serverEntryFolderURL = path.dirname(serverEntryFolderURL);
  }
  const serverEntryURL = serverEntryFolderURL + "/entry.mjs";
  const clientURL = new URL(appendForwardSlash(rel), serverEntryURL);
  return url.fileURLToPath(clientURL);
}
function readHeadersJson(outDir) {
  let headersMap = void 0;
  const headersUrl = new URL(STATIC_HEADERS_FILE, outDir);
  if (fs.existsSync(headersUrl)) {
    const content = fs.readFileSync(headersUrl, "utf-8");
    try {
      headersMap = JSON.parse(content);
    } catch (e) {
      console.error("[@astrojs/node] Error parsing _headers.json: " + e.message);
      console.error("[@astrojs/node] Please make sure your _headers.json is valid JSON.");
    }
  }
  return headersMap;
}
export {
  STATIC_HEADERS_FILE,
  readHeadersJson,
  resolveClientDir
};