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

var gFccRadioElemChoice,
  gDraftsRadioElemChoice,
  gArchivesRadioElemChoice,
  gTmplRadioElemChoice;
var gFccRadioElemChoiceLocked,
  gDraftsRadioElemChoiceLocked,
  gArchivesRadioElemChoiceLocked,
  gTmplRadioElemChoiceLocked;
var gDefaultPickerMode = "1";

var gFccFolderWithDelim,
  gDraftsFolderWithDelim,
  gArchivesFolderWithDelim,
  gTemplatesFolderWithDelim;
var gAccount;
var gCurrentServerId;

function onPreInit(account, accountValues) {
  gAccount = account;
  var type = parent.getAccountValue(
    account,
    accountValues,
    "server",
    "type",
    null,
    false
  );
  hideShowControls(type);
}

/*
 * Set the global radio element choices and initialize folder/account pickers.
 * Also, initialize other UI elements (cc, bcc, fcc picker controller checkboxes).
 */
function onInit(aPageId, aServerId) {
  gCurrentServerId = aServerId;
  onInitCopiesAndFolders();
}

function onInitCopiesAndFolders() {
  SetGlobalRadioElemChoices();

  SetFolderDisplay(
    gFccRadioElemChoice,
    gFccRadioElemChoiceLocked,
    "fcc",
    "msgFccAccountPicker",
    "identity.fccFolder",
    "msgFccFolderPicker"
  );

  SetFolderDisplay(
    gArchivesRadioElemChoice,
    gArchivesRadioElemChoiceLocked,
    "archive",
    "msgArchivesAccountPicker",
    "identity.archiveFolder",
    "msgArchivesFolderPicker"
  );

  SetFolderDisplay(
    gDraftsRadioElemChoice,
    gDraftsRadioElemChoiceLocked,
    "draft",
    "msgDraftsAccountPicker",
    "identity.draftFolder",
    "msgDraftsFolderPicker"
  );

  SetFolderDisplay(
    gTmplRadioElemChoice,
    gTmplRadioElemChoiceLocked,
    "tmpl",
    "msgStationeryAccountPicker",
    "identity.stationeryFolder",
    "msgStationeryFolderPicker"
  );

  setupDoCcBccItems("identity.doCc", "identity.doCcList");
  setupDoCcBccItems("identity.doBcc", "identity.doBccList");
  setupFccItems();
  setupArchiveItems();

  SetSpecialFolderNamesWithDelims();
}

// Initialize the picker mode choices (account/folder picker) into global vars
function SetGlobalRadioElemChoices() {
  var pickerModeElement = document.getElementById(
    "identity.fccFolderPickerMode"
  );
  gFccRadioElemChoice = pickerModeElement.getAttribute("value");
  gFccRadioElemChoiceLocked = pickerModeElement.getAttribute("disabled");
  if (!gFccRadioElemChoice) {
    gFccRadioElemChoice = gDefaultPickerMode;
  }

  pickerModeElement = document.getElementById(
    "identity.archivesFolderPickerMode"
  );
  gArchivesRadioElemChoice = pickerModeElement.getAttribute("value");
  gArchivesRadioElemChoiceLocked = pickerModeElement.getAttribute("disabled");
  if (!gArchivesRadioElemChoice) {
    gArchivesRadioElemChoice = gDefaultPickerMode;
  }

  pickerModeElement = document.getElementById(
    "identity.draftsFolderPickerMode"
  );
  gDraftsRadioElemChoice = pickerModeElement.getAttribute("value");
  gDraftsRadioElemChoiceLocked = pickerModeElement.getAttribute("disabled");
  if (!gDraftsRadioElemChoice) {
    gDraftsRadioElemChoice = gDefaultPickerMode;
  }

  pickerModeElement = document.getElementById("identity.tmplFolderPickerMode");
  gTmplRadioElemChoice = pickerModeElement.getAttribute("value");
  gTmplRadioElemChoiceLocked = pickerModeElement.getAttribute("disabled");
  if (!gTmplRadioElemChoice) {
    gTmplRadioElemChoice = gDefaultPickerMode;
  }
}

/*
 * Set Account and Folder elements based on the values read from
 * preferences file. Default picker mode, if none specified at this stage, is
 * set to 1 i.e., Other picker displaying the folder value read from the
 * preferences file.
 */
function SetFolderDisplay(
  pickerMode,
  disableMode,
  radioElemPrefix,
  accountPickerId,
  folderPickedField,
  folderPickerId
) {
  if (!pickerMode) {
    pickerMode = gDefaultPickerMode;
  }

  var selectAccountRadioId = radioElemPrefix + "_selectAccount";
  var selectAccountRadioElem = document.getElementById(selectAccountRadioId);
  var selectFolderRadioId = radioElemPrefix + "_selectFolder";
  var selectFolderRadioElem = document.getElementById(selectFolderRadioId);
  var accountPicker = document.getElementById(accountPickerId);
  var folderPicker = document.getElementById(folderPickerId);
  var rg = selectAccountRadioElem.radioGroup;
  var folderPickedElement = document.getElementById(folderPickedField);
  var uri = folderPickedElement.getAttribute("value");
  // Get message folder from the given uri.
  // There is no need to check for the existence of special folders as
  // these folders are created on demand at runtime in case of imap accounts.
  // For POP3 accounts, special folders are created at the account creation time.
  var msgFolder = MailUtils.getOrCreateFolder(uri);
  InitFolderDisplay(msgFolder.server.rootFolder, accountPicker);
  InitFolderDisplay(msgFolder, folderPicker);

  switch (pickerMode) {
    case "0":
      rg.selectedItem = selectAccountRadioElem;
      SetPickerEnabling(accountPickerId, folderPickerId);
      break;

    case "1":
      rg.selectedItem = selectFolderRadioElem;
      SetPickerEnabling(folderPickerId, accountPickerId);
      break;

    default:
      dump("Error in setting initial folder display on pickers\n");
      break;
  }

  // Check to see if we need to lock page elements. Disable radio buttons
  // and account/folder pickers when locked.
  if (disableMode) {
    selectAccountRadioElem.setAttribute("disabled", "true");
    selectFolderRadioElem.setAttribute("disabled", "true");
    accountPicker.setAttribute("disabled", "true");
    folderPicker.setAttribute("disabled", "true");
  }
}

// Initialize the folder display based on prefs values
function InitFolderDisplay(folder, folderPicker) {
  folderPicker.menupopup.selectFolder(folder);
  folderPicker.folder = folder;
}

/**
 * Capture any menulist changes and update the folder property.
 *
 * @param {string} aGroup - The prefix for the menulist we're handling
 *   (e.g. "drafts")
 * @param {"Account"|"Folder"} aType - "Account" for the account picker or
 *   "Folder" for the folder picker.
 * @param {Event} aEvent - The event that we're responding to.
 */
function noteSelectionChange(aGroup, aType, aEvent) {
  var checkedElem = document.getElementById(aGroup + "_select" + aType);
  var folder = aEvent.target._folder;
  var modeValue = checkedElem.value;
  var radioGroup = checkedElem.radioGroup.getAttribute("id");
  var picker;

  switch (radioGroup) {
    case "doFcc":
      gFccRadioElemChoice = modeValue;
      picker = document.getElementById("msgFcc" + aType + "Picker");
      break;

    case "messageArchives":
      gArchivesRadioElemChoice = modeValue;
      picker = document.getElementById("msgArchives" + aType + "Picker");
      updateArchiveHierarchyButton(folder);
      break;

    case "messageDrafts":
      gDraftsRadioElemChoice = modeValue;
      picker = document.getElementById("msgDrafts" + aType + "Picker");
      break;

    case "messageTemplates":
      gTmplRadioElemChoice = modeValue;
      picker = document.getElementById("msgStationery" + aType + "Picker");
      break;
  }

  picker.folder = folder;
  picker.menupopup.selectFolder(folder);
}

// Need to append special folders when account picker is selected.
// Create a set of global special folder vars to be suffixed to the
// server URI of the selected account.
function SetSpecialFolderNamesWithDelims() {
  var folderDelim = "/";
  /* we use internal names known to everyone like "Sent", "Templates" and "Drafts" */

  gFccFolderWithDelim = folderDelim + "Sent";
  gArchivesFolderWithDelim = folderDelim + "Archives";
  gDraftsFolderWithDelim = folderDelim + "Drafts";
  gTemplatesFolderWithDelim = folderDelim + "Templates";
}

// Save all changes on this page
function onSave() {
  onSaveCopiesAndFolders();
}

function onSaveCopiesAndFolders() {
  SaveFolderSettings(
    gFccRadioElemChoice,
    "doFcc",
    gFccFolderWithDelim,
    "msgFccAccountPicker",
    "msgFccFolderPicker",
    "identity.fccFolder",
    "identity.fccFolderPickerMode"
  );

  SaveFolderSettings(
    gArchivesRadioElemChoice,
    "messageArchives",
    gArchivesFolderWithDelim,
    "msgArchivesAccountPicker",
    "msgArchivesFolderPicker",
    "identity.archiveFolder",
    "identity.archivesFolderPickerMode"
  );

  SaveFolderSettings(
    gDraftsRadioElemChoice,
    "messageDrafts",
    gDraftsFolderWithDelim,
    "msgDraftsAccountPicker",
    "msgDraftsFolderPicker",
    "identity.draftFolder",
    "identity.draftsFolderPickerMode"
  );

  SaveFolderSettings(
    gTmplRadioElemChoice,
    "messageTemplates",
    gTemplatesFolderWithDelim,
    "msgStationeryAccountPicker",
    "msgStationeryFolderPicker",
    "identity.stationeryFolder",
    "identity.tmplFolderPickerMode"
  );
}

// Save folder settings and radio element choices
function SaveFolderSettings(
  radioElemChoice,
  radioGroupId,
  folderSuffix,
  accountPickerId,
  folderPickerId,
  folderElementId,
  folderPickerModeId
) {
  var formElement = document.getElementById(folderElementId);
  var uri;

  if (
    radioElemChoice == "0" ||
    !document.getElementById(folderPickerId).value
  ) {
    // Default or revert to default if no folder chosen.
    radioElemChoice = "0";
    uri = document.getElementById(accountPickerId).folder.URI;
    if (uri) {
      // Create Folder URI.
      uri = uri + folderSuffix;
    }
  } else if (radioElemChoice == "1") {
    uri = document.getElementById(folderPickerId).folder.URI;
  } else {
    dump("Error saving folder preferences.\n");
    return;
  }

  formElement.setAttribute("value", uri);

  formElement = document.getElementById(folderPickerModeId);
  formElement.setAttribute("value", radioElemChoice);
}

// Check the Fcc Self item and setup associated picker state
function setupFccItems() {
  let checked = document.getElementById("identity.doFcc").checked;
  document.querySelectorAll(".depends-on-do-fcc").forEach(e => {
    if (checked) {
      e.removeAttribute("disabled");
    } else {
      e.setAttribute("disabled", "true");
    }
  });
  if (!checked) {
    return;
  }

  switch (gFccRadioElemChoice) {
    case "0":
      if (!gFccRadioElemChoiceLocked) {
        SetPickerEnabling("msgFccAccountPicker", "msgFccFolderPicker");
      }
      SetRadioButtons("fcc_selectAccount", "fcc_selectFolder");
      break;

    case "1":
      if (!gFccRadioElemChoiceLocked) {
        SetPickerEnabling("msgFccFolderPicker", "msgFccAccountPicker");
      }
      SetRadioButtons("fcc_selectFolder", "fcc_selectAccount");
      break;

    default:
      dump("Error in setting Fcc elements.\n");
      break;
  }
}

/**
 * Handle the initial status and value of the Auto-Cc/Bcc text input fields.
 *
 * @param {string} checkboxId - The ID of an Auto-Cc/Bcc checkbox.
 * @param {string} inputId - The ID of an Auto-Cc/Bcc text input element.
 */
function setupDoCcBccItems(checkboxId, inputId) {
  // Enable address input according to the status of the checkbox.
  let input = document.getElementById(inputId);
  input.disabled = !document.getElementById(checkboxId).checked;
  // Safeguard against space-padded address list to ensure list visibility.
  input.value = input.value.trim();
}

/**
 * Handle the command event of the Auto-Cc/Bcc checkboxes.
 * Disable the respective text input element if the checkbox is not checked, and
 * handle the default value of the input when the checkbox is toggled.
 *
 * @param {Event} event - The command event of the checkbox.
 */
function identityDoCcBccOnCommand(event) {
  let checkbox = event.target;
  let checked = checkbox.checked;
  // For checkboxes #identity.doCc and #identity.doBcc, get the corresponding
  // inputs: #identity.doCcList and #identity.doBccList.
  let input = document.getElementById(`${checkbox.id}List`);
  input.disabled = !checked;

  // User toggled checkbox.
  let identityEmailAddress = document.getElementById("identity.email").value;
  if (checked) {
    // If user checks the checkbox and there's no address, default to identity's
    // email address.
    if (!input.value) {
      input.value = identityEmailAddress;
    }
    input.select();
    return;
  }

  if (input.value == identityEmailAddress) {
    // If user unchecks checkbox and the input has default address, clear input.
    input.value = "";
  }
}

/**
 * Handle the blur event of the Auto-Cc/Bcc checkboxes.
 *
 * @param {Event} event - The blur event of the checkbox.
 */
function identityDoCcBccOnBlur(event) {
  let input = event.target;
  // Safeguard against space-padded address list to ensure list visibility.
  input.value = input.value.trim();
}

// Enable and disable pickers based on the radio element clicked
function SetPickerEnabling(enablePickerId, disablePickerId) {
  var activePicker = document.getElementById(enablePickerId);
  activePicker.removeAttribute("disabled");

  var inactivePicker = document.getElementById(disablePickerId);
  inactivePicker.setAttribute("disabled", "true");
}

// Set radio element choices and picker states
function setPickersState(enablePickerId, disablePickerId, event) {
  SetPickerEnabling(enablePickerId, disablePickerId);

  var radioElemValue = event.target.value;

  switch (event.target.id) {
    case "fcc_selectAccount":
    case "fcc_selectFolder":
      gFccRadioElemChoice = radioElemValue;
      break;
    case "archive_selectAccount":
    case "archive_selectFolder":
      gArchivesRadioElemChoice = radioElemValue;
      updateArchiveHierarchyButton(
        document.getElementById(enablePickerId).folder
      );
      break;
    case "draft_selectAccount":
    case "draft_selectFolder":
      gDraftsRadioElemChoice = radioElemValue;
      break;
    case "tmpl_selectAccount":
    case "tmpl_selectFolder":
      gTmplRadioElemChoice = radioElemValue;
      break;
    default:
      dump("Error in setting picker state.\n");
  }
}

// This routine is to restore the correct radio element
// state when the fcc self checkbox broadcasts the change
function SetRadioButtons(selectPickerId, unselectPickerId) {
  var activeRadioElem = document.getElementById(selectPickerId);
  activeRadioElem.radioGroup.selectedItem = activeRadioElem;
}

/**
 * Enable/disable the archive hierarchy button depending on what folder is
 * currently selected (Gmail IMAP folders should have the button disabled, since
 * changing the archive hierarchy does nothing there.
 *
 * @param {nsIMsgFolder} archiveFolder - The currently-selected folder to store
 *   archives in
 */
function updateArchiveHierarchyButton(archiveFolder) {
  let isGmailImap =
    archiveFolder.server.type == "imap" &&
    archiveFolder.server.QueryInterface(Ci.nsIImapIncomingServer).isGMailServer;
  document.getElementById("archiveHierarchyButton").disabled = isGmailImap;
}

/**
 * Enable or disable (as appropriate) the controls for setting archive options
 */
function setupArchiveItems() {
  let checked = document.getElementById("identity.archiveEnabled").checked;
  document.querySelectorAll(".depends-on-archive").forEach(e => {
    if (checked) {
      e.removeAttribute("disabled");
    } else {
      e.setAttribute("disabled", "true");
    }
  });
  if (!checked) {
    return;
  }

  switch (gArchivesRadioElemChoice) {
    case "0":
      if (!gArchivesRadioElemChoiceLocked) {
        SetPickerEnabling(
          "msgArchivesAccountPicker",
          "msgArchivesFolderPicker"
        );
      }
      SetRadioButtons("archive_selectAccount", "archive_selectFolder");
      updateArchiveHierarchyButton(
        document.getElementById("msgArchivesAccountPicker").folder
      );
      break;

    case "1":
      if (!gArchivesRadioElemChoiceLocked) {
        SetPickerEnabling(
          "msgArchivesFolderPicker",
          "msgArchivesAccountPicker"
        );
      }
      SetRadioButtons("archive_selectFolder", "archive_selectAccount");
      updateArchiveHierarchyButton(
        document.getElementById("msgArchivesFolderPicker").folder
      );
      break;

    default:
      dump("Error in setting Archive elements.\n");
  }
}

/**
 * Open a dialog to edit the folder hierarchy used when archiving messages.
 */
function ChangeArchiveHierarchy() {
  let identity = parent.gIdentity || parent.getCurrentAccount().defaultIdentity;
  let arg = { identity };

  parent.gSubDialog.open(
    "chrome://messenger/content/am-archiveoptions.xhtml",
    undefined,
    arg
  );
}