import { fileURLToPath, pathToFileURL } from 'node:url';
import { builtinModules } from 'node:module';
import { existsSync } from 'node:fs';
import { resolve, dirname } from 'pathe';

const isWindows = process.platform === "win32";
const drive = isWindows ? process.cwd()[0] : null;
const driveOpposite = drive ? drive === drive.toUpperCase() ? drive.toLowerCase() : drive.toUpperCase() : null;
const driveRegexp = drive ? new RegExp(`(?:^|/@fs/)${drive}(:[\\/])`) : null;
const driveOppositeRegext = driveOpposite ? new RegExp(`(?:^|/@fs/)${driveOpposite}(:[\\/])`) : null;
function slash(str) {
  return str.replace(/\\/g, "/");
}
const VALID_ID_PREFIX = "/@id/";
function normalizeRequestId(id, base) {
  if (base && id.startsWith(withTrailingSlash(base)))
    id = `/${id.slice(base.length)}`;
  if (driveRegexp && !(driveRegexp == null ? void 0 : driveRegexp.test(id)) && (driveOppositeRegext == null ? void 0 : driveOppositeRegext.test(id)))
    id = id.replace(driveOppositeRegext, `${drive}$1`);
  return id.replace(/^\/@id\/__x00__/, "\0").replace(/^\/@id\//, "").replace(/^__vite-browser-external:/, "").replace(/^file:/, "").replace(/^\/+/, "/").replace(/\?v=\w+/, "?").replace(/&v=\w+/, "").replace(/\?t=\w+/, "?").replace(/&t=\w+/, "").replace(/\?import/, "?").replace(/&import/, "").replace(/\?&/, "?").replace(/\?+$/, "");
}
const queryRE = /\?.*$/s;
const hashRE = /#.*$/s;
function cleanUrl(url) {
  return url.replace(hashRE, "").replace(queryRE, "");
}
const internalRequests = [
  "@vite/client",
  "@vite/env"
];
const internalRequestRegexp = new RegExp(`^/?(${internalRequests.join("|")})$`);
function isInternalRequest(id) {
  return internalRequestRegexp.test(id);
}
const prefixedBuiltins = /* @__PURE__ */ new Set([
  "node:test"
]);
const builtins = /* @__PURE__ */ new Set([
  ...builtinModules,
  "assert/strict",
  "diagnostics_channel",
  "dns/promises",
  "fs/promises",
  "path/posix",
  "path/win32",
  "readline/promises",
  "stream/consumers",
  "stream/promises",
  "stream/web",
  "timers/promises",
  "util/types",
  "wasi"
]);
function normalizeModuleId(id) {
  if (prefixedBuiltins.has(id))
    return id;
  return id.replace(/\\/g, "/").replace(/^\/@fs\//, isWindows ? "" : "/").replace(/^file:\//, "/").replace(/^node:/, "").replace(/^\/+/, "/");
}
function isPrimitive(v) {
  return v !== Object(v);
}
function toFilePath(id, root) {
  let { absolute, exists } = (() => {
    if (id.startsWith("/@fs/"))
      return { absolute: id.slice(4), exists: true };
    if (!id.startsWith(withTrailingSlash(root)) && id.startsWith("/")) {
      const resolved = resolve(root, id.slice(1));
      if (existsSync(cleanUrl(resolved)))
        return { absolute: resolved, exists: true };
    } else if (id.startsWith(withTrailingSlash(root)) && existsSync(cleanUrl(id))) {
      return { absolute: id, exists: true };
    }
    return { absolute: id, exists: false };
  })();
  if (absolute.startsWith("//"))
    absolute = absolute.slice(1);
  return {
    path: isWindows && absolute.startsWith("/") ? slash(fileURLToPath(pathToFileURL(absolute.slice(1)).href)) : absolute,
    exists
  };
}
const NODE_BUILTIN_NAMESPACE = "node:";
function isNodeBuiltin(id) {
  if (prefixedBuiltins.has(id))
    return true;
  return builtins.has(
    id.startsWith(NODE_BUILTIN_NAMESPACE) ? id.slice(NODE_BUILTIN_NAMESPACE.length) : id
  );
}
function toArray(array) {
  if (array === null || array === void 0)
    array = [];
  if (Array.isArray(array))
    return array;
  return [array];
}
function getCachedData(cache, basedir, originalBasedir) {
  const pkgData = cache.get(getFnpdCacheKey(basedir));
  if (pkgData) {
    traverseBetweenDirs(originalBasedir, basedir, (dir) => {
      cache.set(getFnpdCacheKey(dir), pkgData);
    });
    return pkgData;
  }
}
function setCacheData(cache, data, basedir, originalBasedir) {
  cache.set(getFnpdCacheKey(basedir), data);
  traverseBetweenDirs(originalBasedir, basedir, (dir) => {
    cache.set(getFnpdCacheKey(dir), data);
  });
}
function getFnpdCacheKey(basedir) {
  return `fnpd_${basedir}`;
}
function traverseBetweenDirs(longerDir, shorterDir, cb) {
  while (longerDir !== shorterDir) {
    cb(longerDir);
    longerDir = dirname(longerDir);
  }
}
function withTrailingSlash(path) {
  if (path[path.length - 1] !== "/")
    return `${path}/`;
  return path;
}
function createImportMetaEnvProxy() {
  const booleanKeys = [
    "DEV",
    "PROD",
    "SSR"
  ];
  return new Proxy(process.env, {
    get(_, key) {
      if (typeof key !== "string")
        return void 0;
      if (booleanKeys.includes(key))
        return !!process.env[key];
      return process.env[key];
    },
    set(_, key, value) {
      if (typeof key !== "string")
        return true;
      if (booleanKeys.includes(key))
        process.env[key] = value ? "1" : "";
      else
        process.env[key] = value;
      return true;
    }
  });
}

export { VALID_ID_PREFIX, cleanUrl, createImportMetaEnvProxy, getCachedData, hashRE, isInternalRequest, isNodeBuiltin, isPrimitive, isWindows, normalizeModuleId, normalizeRequestId, queryRE, setCacheData, slash, toArray, toFilePath, withTrailingSlash };
