/* 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/. */

/* import-globals-from am-prefs.js */
/* import-globals-from amUtils.js */

var { MailServices } = ChromeUtils.import(
  "resource:///modules/MailServices.jsm"
);
var { MailUtils } = ChromeUtils.import("resource:///modules/MailUtils.jsm");

var gDeferredToAccount = "";

function onInit(aPageId, aServerId) {
  // manually adjust several pref UI elements
  document.getElementById("server.spamLevel.visible").checked =
    document.getElementById("server.spamLevel").value > 0;

  let deferredToURI = null;
  if (gDeferredToAccount) {
    deferredToURI =
      MailServices.accounts.getAccount(gDeferredToAccount).incomingServer
        .serverURI;
  }

  let spamActionTargetAccountElement = document.getElementById(
    "server.spamActionTargetAccount"
  );
  let spamActionTargetFolderElement = document.getElementById(
    "server.spamActionTargetFolder"
  );

  let spamActionTargetAccount = spamActionTargetAccountElement.value;
  let spamActionTargetFolder = spamActionTargetFolderElement.value;

  let moveOnSpamCheckbox = document.getElementById("server.moveOnSpam");
  let moveOnSpamValue = moveOnSpamCheckbox.checked;

  // Check if there are any invalid junk targets and fix them.
  [spamActionTargetAccount, spamActionTargetFolder, moveOnSpamValue] =
    sanitizeJunkTargets(
      spamActionTargetAccount,
      spamActionTargetFolder,
      deferredToURI || aServerId,
      document.getElementById("server.moveTargetMode").value,
      MailUtils.getOrCreateFolder(aServerId).server.spamSettings,
      moveOnSpamValue
    );

  spamActionTargetAccountElement.value = spamActionTargetAccount;
  spamActionTargetFolderElement.value = spamActionTargetFolder;
  moveOnSpamCheckbox.checked = moveOnSpamValue;

  let server = MailUtils.getOrCreateFolder(spamActionTargetAccount);
  document.getElementById("actionAccountPopup").selectFolder(server);

  let folder = MailUtils.getExistingFolder(spamActionTargetFolder);
  document.getElementById("actionFolderPopup").selectFolder(folder);

  var currentArray = [];
  if (document.getElementById("server.useWhiteList").checked) {
    currentArray = document
      .getElementById("server.whiteListAbURI")
      .value.split(" ");
  }

  // set up the whitelist UI
  var wList = document.getElementById("whiteListAbURI");
  // Ensure the whitelist is empty
  while (wList.hasChildNodes()) {
    wList.lastChild.remove();
  }

  // Populate the listbox with address books
  let abItems = [];
  for (let ab of MailServices.ab.directories) {
    // We skip mailing lists and remote address books.
    if (ab.isMailList || ab.isRemote) {
      continue;
    }

    abItems.push({ label: ab.dirName, URI: ab.URI });
  }

  // Sort the list
  function sortFunc(a, b) {
    return a.label.localeCompare(b.label);
  }
  abItems.sort(sortFunc);

  // And then append each item to the listbox
  for (let abItem of abItems) {
    let checkbox = document.createXULElement("checkbox");
    checkbox.setAttribute("label", abItem.label);
    checkbox.checked = currentArray.includes(abItem.URI);

    let item = document.createXULElement("richlistitem");
    item.appendChild(checkbox);
    item.setAttribute("value", abItem.URI);
    wList.appendChild(item);
  }

  wList.addEventListener("keypress", event => {
    if ([" ", "Enter"].includes(event.key)) {
      let checkbox = wList.currentItem.firstElementChild;
      checkbox.checked = !checkbox.checked;
      wList.dispatchEvent(new CustomEvent("command"));
    }
  });

  // enable or disable the whitelist
  onAdaptiveJunkToggle();

  // set up trusted IP headers
  var serverFilterList = document.getElementById("useServerFilterList");
  serverFilterList.value = document.getElementById(
    "server.serverFilterName"
  ).value;
  if (!serverFilterList.selectedItem) {
    serverFilterList.selectedIndex = 0;
  }

  // enable or disable the useServerFilter checkbox
  onCheckItem("useServerFilterList", ["server.useServerFilter"]);

  updateJunkTargetsAndRetention();
}

function onPreInit(account, accountValues) {
  if (
    top.getAccountValue(
      account,
      accountValues,
      "server",
      "type",
      null,
      false
    ) == "pop3"
  ) {
    gDeferredToAccount = top.getAccountValue(
      account,
      accountValues,
      "pop3",
      "deferredToAccount",
      null,
      false
    );
  }

  buildServerFilterMenuList();
}

/**
 * Called when someone checks or unchecks the adaptive junk mail checkbox.
 * set the value of the hidden element accordingly
 *
 * @param {boolean} aValue - The boolean value of the checkbox.
 */
function updateSpamLevel(aValue) {
  document.getElementById("server.spamLevel").value = aValue ? 100 : 0;
  onAdaptiveJunkToggle();
}

/**
 * Propagate changes to the server filter menu list back to
 * our hidden wsm element.
 */
function onServerFilterListChange() {
  document.getElementById("server.serverFilterName").value =
    document.getElementById("useServerFilterList").value;
}

/**
 * Called when someone checks or unchecks the adaptive junk mail checkbox.
 * We need to enable or disable the whitelist accordingly.
 */
function onAdaptiveJunkToggle() {
  onCheckItem("whiteListAbURI", ["server.spamLevel.visible"]);
  onCheckItem("whiteListLabel", ["server.spamLevel.visible"]);

  // Enable/disable individual listbox rows.
  // Setting enable/disable on the parent listbox does not seem to work.
  let wList = document.getElementById("whiteListAbURI");
  let wListDisabled = wList.disabled;

  for (let i = 0; i < wList.getRowCount(); i++) {
    let item = wList.getItemAtIndex(i);
    item.setAttribute("disabled", wListDisabled);
    item.firstElementChild.setAttribute("disabled", wListDisabled);
  }
}

/**
 * Called when someone checks or unchecks the "move new junk messages to"
 * Enable/disable the radio group accordingly.
 */
function updateJunkTargetsAndRetention() {
  onCheckItem("server.moveTargetMode", ["server.moveOnSpam"]);
  updateJunkTargets();
  onCheckItem("server.purgeSpam", ["server.moveOnSpam"]);
  document.getElementById("purgeLabel").disabled =
    document.getElementById("server.purgeSpam").disabled;
  updateJunkRetention();
}

/**
 * Enable/disable the folder pickers depending on which radio item is selected.
 */
function updateJunkTargets() {
  onCheckItem("actionTargetAccount", ["server.moveOnSpam", "moveTargetMode0"]);
  onCheckItem("actionTargetFolder", ["server.moveOnSpam", "moveTargetMode1"]);
}

/**
 * Enable/disable the junk deletion interval depending on the state
 * of the controlling checkbox.
 */
function updateJunkRetention() {
  onCheckItem("server.purgeSpamInterval", [
    "server.purgeSpam",
    "server.moveOnSpam",
  ]);
}

function onSave() {
  onSaveWhiteList();
}

/**
 * Propagate changes to the whitelist menu list back to
 * our hidden wsm element.
 */
function onSaveWhiteList() {
  var wList = document.getElementById("whiteListAbURI");
  var wlArray = [];

  for (let i = 0; i < wList.getRowCount(); i++) {
    // Due to bug 448582, do not trust any properties of the listitems
    // as they may not return the right value or may even not exist.
    // Always get the attributes only.
    var wlNode = wList.getItemAtIndex(i);
    if (wlNode.firstElementChild.getAttribute("checked") == "true") {
      let abURI = wlNode.getAttribute("value");
      wlArray.push(abURI);
    }
  }
  var wlValue = wlArray.join(" ");
  document
    .getElementById("server.whiteListAbURI")
    .setAttribute("value", wlValue);
  document.getElementById("server.useWhiteList").checked = wlValue != "";
}

/**
 * Called when a new value is chosen in one of the junk target folder pickers.
 * Sets the menu label according to the folder name.
 */
function onActionTargetChange(aEvent, aWSMElementId) {
  let folder = aEvent.target._folder;
  document.getElementById(aWSMElementId).value = folder.URI;
  document.getElementById("actionFolderPopup").selectFolder(folder);
}

/**
 * Enumerates over the "ISPDL" directories, calling buildServerFilterListFromDir
 * for each one.
 */
function buildServerFilterMenuList() {
  const KEY_ISP_DIRECTORY_LIST = "ISPDL";
  let ispHeaderList = document.getElementById("useServerFilterList");

  // Ensure the menulist is empty.
  ispHeaderList.removeAllItems();

  // Now walk through the isp directories looking for sfd files.
  let ispDirectories = Services.dirsvc.get(
    KEY_ISP_DIRECTORY_LIST,
    Ci.nsISimpleEnumerator
  );

  let menuEntries = [];
  while (ispDirectories.hasMoreElements()) {
    let ispDirectory = ispDirectories.getNext().QueryInterface(Ci.nsIFile);
    if (ispDirectory) {
      menuEntries.push.apply(
        menuEntries,
        buildServerFilterListFromDir(ispDirectory, menuEntries)
      );
    }
  }

  menuEntries.sort((a, b) => a.localeCompare(b));
  for (let entry of menuEntries) {
    ispHeaderList.appendItem(entry, entry);
  }
}

/**
 * Helper function called by buildServerFilterMenuList. Enumerates over the
 * passed in directory looking for .sfd files. For each entry found, it gets
 * appended to the menu list.
 *
 * @param {nsIFile} aDir - Directory to look for .sfd files
 * @param {string[]} aExistingEntries - Filter names already found.
 */
function buildServerFilterListFromDir(aDir, aExistingEntries) {
  let newEntries = [];
  // Now iterate over each file in the directory looking for .sfd files.
  const kSuffix = ".sfd";

  for (let entry of aDir.directoryEntries) {
    // we only care about files that end in .sfd
    if (entry.isFile() && entry.leafName.endsWith(kSuffix)) {
      let fileName = entry.leafName.slice(0, -kSuffix.length);
      // If we've already added an item with this name, then don't add it again.
      if (!aExistingEntries.includes(fileName)) {
        newEntries.push(fileName);
      }
    }
  }
  return newEntries;
}

/**
 * Open the Preferences dialog on the Junk settings tab.
 */
function showGlobalJunkPrefs() {
  openPrefsFromAccountManager(
    "panePrivacy",
    "privacyJunkCategory",
    null,
    "junk_pane"
  );
}