'use strict';

var fs = require('fs');
var path = require('path');

function _interopDefaultCompat (e) { return e && typeof e === 'object' && 'default' in e ? e : { default: e }; }

var fs__default = /*#__PURE__*/_interopDefaultCompat(fs);

function findRootPath(searchDir, filterFunc) {
  let path$1 = searchDir;
  for (let i = 0; i < 1e3; i++) {
    const packagePath = path.resolve(path$1, "package.json");
    const exists = fs__default.default.existsSync(packagePath);
    if (exists && filterFunc(packagePath)) {
      return path$1;
    }
    const newPath = path.dirname(path$1);
    if (newPath === path$1) {
      return void 0;
    }
    path$1 = newPath;
  }
  throw new Error(
    `Iteration limit reached when searching for root package.json at ${searchDir}`
  );
}
function findOwnDir(searchDir) {
  const path = findRootPath(searchDir, () => true);
  if (!path) {
    throw new Error(
      `No package.json found while searching for package root of ${searchDir}`
    );
  }
  return path;
}
function findOwnRootDir(ownDir) {
  const isLocal = fs__default.default.existsSync(path.resolve(ownDir, "src"));
  if (!isLocal) {
    throw new Error(
      "Tried to access monorepo package root dir outside of Backstage repository"
    );
  }
  return path.resolve(ownDir, "../..");
}
function findPaths(searchDir) {
  const ownDir = findOwnDir(searchDir);
  const targetDir = fs__default.default.realpathSync(process.cwd()).replace(/^[a-z]:/, (str) => str.toLocaleUpperCase("en-US"));
  let ownRoot = "";
  const getOwnRoot = () => {
    if (!ownRoot) {
      ownRoot = findOwnRootDir(ownDir);
    }
    return ownRoot;
  };
  let targetRoot = "";
  const getTargetRoot = () => {
    if (!targetRoot) {
      targetRoot = findRootPath(targetDir, (path) => {
        try {
          const content = fs__default.default.readFileSync(path, "utf8");
          const data = JSON.parse(content);
          return Boolean(data.workspaces);
        } catch (error) {
          throw new Error(
            `Failed to parse package.json file while searching for root, ${error}`
          );
        }
      }) ?? targetDir;
    }
    return targetRoot;
  };
  return {
    ownDir,
    get ownRoot() {
      return getOwnRoot();
    },
    targetDir,
    get targetRoot() {
      return getTargetRoot();
    },
    resolveOwn: (...paths) => path.resolve(ownDir, ...paths),
    resolveOwnRoot: (...paths) => path.resolve(getOwnRoot(), ...paths),
    resolveTarget: (...paths) => path.resolve(targetDir, ...paths),
    resolveTargetRoot: (...paths) => path.resolve(getTargetRoot(), ...paths)
  };
}
const BACKSTAGE_JSON = "backstage.json";

exports.BACKSTAGE_JSON = BACKSTAGE_JSON;
exports.findOwnDir = findOwnDir;
exports.findOwnRootDir = findOwnRootDir;
exports.findPaths = findPaths;
exports.findRootPath = findRootPath;
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