///<reference path="../index.d.ts"/>
"use strict";
/*!
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  Copyright (C) 2020 jeffy-g <hirotom1107@gmail.com>
  Released under the MIT license
  https://opensource.org/licenses/mit-license.php
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*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.detectNativeLocale =
  exports.purgeExtraToken =
  exports.getEnvLocale =
    void 0;
const child_process_1 = require("child_process");
/**
 * @import { ExecException, ExecSyncOptionsWithStringEncoding } from "child_process";
 */
const defaultLocale = "en_US";
/** @type {ExecSyncOptionsWithStringEncoding} */
const sharedExecOpt = {
  encoding: "utf8",
  windowsHide: true,
  stdio: ["ignore", "pipe", "ignore"],
};
/**
 * @template {true | void} IsAsync
 * @template {SelectIf<IsAsync, Promise<string | ExecException>, string>} R
 * @param {string} command
 * @param {IsAsync=} async
 * @returns {R}
 * @date 2024-01-03
 * @date 2026/03/02 By using exec and execSync, it is simplified.
 */
function execCommand(command, async) {
  if (async) {
    const { stdio, ...execOpt } = sharedExecOpt;
    return /** @type {R} */ (
      new Promise((resolve) => {
        (0, child_process_1.exec)(command, execOpt, (err, stdout) =>
          resolve(err || stdout),
        );
      })
    );
  }
  try {
    return /** @type {R} */ (
      (0, child_process_1.execSync)(command, sharedExecOpt)
    );
  } catch (e) {
    return /** @type {R} */ (e);
  }
}
const isDebugMode = process.env.OS_LOCALE_S_DEBUG === "1";
/**
 * @param {string | Error} result
 */
/* istanbul ignore next */
const getErrorMessage = (result) => {
  if (result && typeof result === "object" && "message" in result) {
    return String(result.message || "");
  }
  return "";
};
/**
 * If an exception occurs while executing command such as
 * `locale`, `wmic os get locale` the result cannot be applied,
 * so filtering is performed.
 *
 *  * If `result` is empty string, Error object, etc., returns "__en_US__"
 *
 * @todo latest error cache
 * @param {string | Error} result `string` or `Error` object
 * @param {TNativeResultProcessor} [processor] If `result` is a `string`, delegate processing
 * @todo strict check of `result`
 */
function validate(result, processor) {
  if (typeof result === "string" && result.length) {
    const s = result.trim();
    /* istanbul ignore else */
    if (s) {
      return processor ? processor(s) : s;
    }
  }
  /* istanbul ignore if */
  if (isDebugMode) {
    const message = getErrorMessage(result) || "locale command failed";
    console.error(`[os-locale-s] ${message}`);
  }
  return defaultLocale;
}
/**
 * parse of `locale` command result string
 *
 * @param {string} str
 */
function parseLocale(str) {
  const env = str.split("\n").reduce((env, definition) => {
    const [key, value] = definition.split("=");
    if (key && value) {
      env[key] = value.replace(/^"|"$/g, "");
    }
    return env;
  }, /** @type {NodeJS.Dict<string>} */ ({}));
  return (0, exports.getEnvLocale)(env);
}
/** @type {TEmitLocalDetector} */
const emitDetector = (command, processor /*, fallbackCmd*/) => {
  return /** @type {TNativeLocaleDetector} */ (
    (isAsync) => {
      if (isAsync) {
        return /** @type {any} */ (
          execCommand(command, true).then((locale) =>
            validate(locale, processor),
          )
        );
      }
      return validate(execCommand(command), processor);
    }
  );
};
/** @type {TNativeResultProcessor} */
const unixProcessor = (result) =>
  (0, exports.purgeExtraToken)(parseLocale(result));
const detectUnixLocale = emitDetector("locale", unixProcessor);
const localeNameCommand = "(get-culture).name";
const winCommandLine = `powershell -NoProfile -NonInteractive -Command "[Console]::OutputEncoding=[Text.Encoding]::UTF8; ${localeNameCommand}"`;
const detectWinLocale = emitDetector(winCommandLine, (locale) => locale.trim());
/**
 * @param {string} locale
 * @param {string} locales
 */
const isSupportedLocale = (locale, locales) => {
  const target = locale.trim();
  /* istanbul ignore if */
  if (!target) return false;
  const withDot = `${target}.`,
    withAt = `${target}@`;
  return locales
    .split(/\r?\n/)
    .some(
      (line) =>
        line === target || line.startsWith(withDot) || line.startsWith(withAt),
    );
};
/**
 * @param {string} locale result of command `defaults -globalDomain -g AppleLocale`
 * @param {string} locales result of command `locale -a`
 */
const getSupportedLocale = (locale, locales) => {
  return isSupportedLocale(locale, locales)
    ? locale
    : /* istanbul ignore next */ defaultLocale;
};
/** @type {TNativeLocaleDetector} */
const detectAppleLocale = (isAsync) => {
  const localeCommand = "defaults read -globalDomain AppleLocale";
  const listLocaleCommand = "locale -a";
  if (isAsync) {
    /**
     * Locale detection for MAC OS
     */
    return /** @type {any} */ (
      Promise.all([
        execCommand(localeCommand, true).then(validate),
        execCommand(listLocaleCommand, true).then(validate),
      ]).then((results) => getSupportedLocale(results[0], results[1]))
    );
  }
  /**
   * Locale detection for MAC OS
   */
  return /** @type {any} */ (
    getSupportedLocale(
      validate(execCommand(localeCommand)),
      validate(execCommand(listLocaleCommand)),
    )
  );
};
/**
 * attempts to extract `LC_ALL`, `LC_MESSAGES`, `LANG`, `LANGUAGE` values from a map object like `process.env`
 *
 *  * If there is no value for those keys, it will be an empty string
 *
 * @param {NodeJS.Dict<string>} [env] more details see {@link https://nodejs.org/api/process.html#process_process_env process.env}
 */
const getEnvLocale = (env = process.env) =>
  env.LC_ALL || env.LC_MESSAGES || env.LANG || env.LANGUAGE || "";
exports.getEnvLocale = getEnvLocale;
/**
 * e.g - "en-US.utf8" => "en-US"
 *
 * @param {string} str probably, string like "en-US.utf8". if `str` is empty string then returns `en_US`.
 */
const purgeExtraToken = (str) =>
  (str && str.replace(/[.:].*/, "")) || defaultLocale;
exports.purgeExtraToken = purgeExtraToken;
/**
 * Use the value of `process.platform`.
 * `darwin` can be limited to MAC OS, `win32` to Windows, and the command to get the locale is a little special.
 * In addition, UNIX locale commands can be used for `aix`, `freebsd`, `linux`, `openbsd`, and `sunos`.
 * @see {@link https://nodejs.org/api/process.html#processplatform process.platform}
 */
const detectPlatform = () => {
  let { platform } = process;
  if (platform !== "win32" && platform !== "darwin") {
    platform = "linux";
  }
  return platform;
};
/**
 * Use the value of process.platform as the function name.
 * The OS can be limited to 'win32' and 'darwin',
 * but other OS must be Linux-based, so a check code like `detectPlatform` is required.
 *
 * @see {@link detectPlatform}
 */
const localeDetectorMap = {
  win32: detectWinLocale,
  darwin: detectAppleLocale,
  linux: detectUnixLocale,
};
/** @type {TNativeLocaleDetector} */
const detectNativeLocale = (isAsync) => {
  const detector = localeDetectorMap[detectPlatform()];
  return detector(isAsync);
};
exports.detectNativeLocale = detectNativeLocale;