/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

/* All top-level definitions here are exports.  */
/* eslint no-unused-vars: [2, {"vars": "local"}] */

const PROPERTIES_URL = "chrome://devtools/locale/styleeditor.properties";

import { loader } from "resource://devtools/shared/loader/Loader.sys.mjs";

const gStringBundle = Services.strings.createBundle(PROPERTIES_URL);

const lazy = {};

loader.lazyRequireGetter(
  lazy,
  "Menu",
  "resource://devtools/client/framework/menu.js"
);
loader.lazyRequireGetter(
  lazy,
  "MenuItem",
  "resource://devtools/client/framework/menu-item.js"
);

const PREF_AT_RULES_SIDEBAR = "devtools.styleeditor.showAtRulesSidebar";
const PREF_ORIG_SOURCES = "devtools.source-map.client-service.enabled";

/**
 * Returns a localized string with the given key name from the string bundle.
 *
 * @param name
 * @param ...rest
 *        Optional arguments to format in the string.
 * @return string
 */
export function getString(name) {
  try {
    if (arguments.length == 1) {
      return gStringBundle.GetStringFromName(name);
    }
    const rest = Array.prototype.slice.call(arguments, 1);
    return gStringBundle.formatStringFromName(name, rest);
  } catch (ex) {
    console.error(ex);
    throw new Error(
      "L10N error. '" + name + "' is missing from " + PROPERTIES_URL
    );
  }
}

/**
 * Assert an expression is true or throw if false.
 *
 * @param expression
 * @param message
 *        Optional message.
 * @return expression
 */
export function assert(expression, message) {
  if (!expression) {
    const msg = message ? "ASSERTION FAILURE:" + message : "ASSERTION FAILURE";
    log(msg);
    throw new Error(msg);
  }
  return expression;
}

/**
 * Retrieve or set the text content of an element.
 *
 * @param DOMElement root
 *        The element to use for querySelector.
 * @param string selector
 *        Selector string for the element to get/set the text content.
 * @param string textContent
 *        Optional text to set.
 * @return string
 *         Text content of matching element or null if there were no element
 *         matching selector.
 */
export function text(root, selector, textContent) {
  const element = root.querySelector(selector);
  if (!element) {
    return null;
  }

  if (textContent === undefined) {
    return element.textContent;
  }
  element.textContent = textContent;
  return textContent;
}

/**
 * Log a message to the console.
 *
 * @param ...rest
 *        One or multiple arguments to log.
 *        If multiple arguments are given, they will be joined by " "
 *        in the log.
 */
export function log() {
  console.logStringMessage(Array.prototype.slice.call(arguments).join(" "));
}

/**
 * Show file picker and return the file user selected.
 *
 * @param mixed file
 *        Optional nsIFile or string representing the filename to auto-select.
 * @param boolean toSave
 *        If true, the user is selecting a filename to save.
 * @param nsIWindow parentWindow
 *        Optional parent window. If null the parent window of the file picker
 *        will be the window of the attached input element.
 * @param callback
 *        The callback method, which will be called passing in the selected
 *        file or null if the user did not pick one.
 * @param AString suggestedFilename
 *        The suggested filename when toSave is true.
 */
export function showFilePicker(
  path,
  toSave,
  parentWindow,
  callback,
  suggestedFilename
) {
  if (typeof path == "string") {
    try {
      if (Services.io.extractScheme(path) == "file") {
        const uri = Services.io.newURI(path);
        const file = uri.QueryInterface(Ci.nsIFileURL).file;
        callback(file);
        return;
      }
    } catch (ex) {
      callback(null);
      return;
    }
    try {
      const file = Cc["@mozilla.org/file/local;1"].createInstance(Ci.nsIFile);
      file.initWithPath(path);
      callback(file);
      return;
    } catch (ex) {
      callback(null);
      return;
    }
  }
  if (path) {
    // "path" is an nsIFile
    callback(path);
    return;
  }

  const fp = Cc["@mozilla.org/filepicker;1"].createInstance(Ci.nsIFilePicker);
  const mode = toSave ? fp.modeSave : fp.modeOpen;
  const key = toSave ? "saveStyleSheet" : "importStyleSheet";
  const fpCallback = function (result) {
    if (result == Ci.nsIFilePicker.returnCancel) {
      callback(null);
    } else {
      callback(fp.file);
    }
  };

  if (toSave && suggestedFilename) {
    fp.defaultString = suggestedFilename;
  }

  fp.init(parentWindow, getString(key + ".title"), mode);
  fp.appendFilter(getString(key + ".filter"), "*.css");
  fp.appendFilters(fp.filterAll);
  fp.open(fpCallback);
}

/**
 * Returns a Popup Menu for the Options ("gear") Button
 * @param {function} toggleOrigSources
 *        To toggle the original source pref
 * @param {function} toggleAtRulesSidebar
 *        To toggle the pref to show at-rules side bar
 * @return {object} popupMenu
 *         A Menu object holding the MenuItems
 */
export function optionsPopupMenu(toggleOrigSources, toggleAtRulesSidebar) {
  const popupMenu = new lazy.Menu();
  popupMenu.append(
    new lazy.MenuItem({
      id: "options-origsources",
      label: getString("showOriginalSources.label"),
      accesskey: getString("showOriginalSources.accesskey"),
      type: "checkbox",
      checked: Services.prefs.getBoolPref(PREF_ORIG_SOURCES),
      click: () => toggleOrigSources(),
    })
  );
  popupMenu.append(
    new lazy.MenuItem({
      id: "options-show-at-rules",
      label: getString("showAtRulesSidebar.label"),
      accesskey: getString("showAtRulesSidebar.accesskey"),
      type: "checkbox",
      checked: Services.prefs.getBoolPref(PREF_AT_RULES_SIDEBAR),
      click: () => toggleAtRulesSidebar(),
    })
  );

  return popupMenu;
}