/* 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/. */

#include "nsISupports.idl"
#include "nsIMsgFolder.idl"

interface nsIMsgWindow;
interface nsINntpIncomingServer;

[scriptable, uuid(9a12c3a5-9de5-4c57-ace3-d51802b525a9)]
interface nsIMsgNewsFolder : nsISupports {
  /**|rawName| is an 8-bit string to represent the name of a newsgroup used by
   * a news server. It's offered for the convenience of callers so that they
   * don't have to convert |unicodeName| to the server-side name when
   * communicating with a news server.  It's US-ASCII except for some
   * 'stand-alone' Chinese news servers that use GB2312 for newsgroup names
   * violating RFC 1036. For those servers, it's GB2312. However, it can be any
   * other single and multibyte encoding in principle. The encoding of this
   * string is stored in |nsINntpIncomingServer| because that's a server-wide
   * property.
   **/
  readonly attribute ACString rawName;
  readonly attribute nsINntpIncomingServer nntpServer;
  attribute boolean saveArticleOffline;

  /**
   * @name Authentication methods
   * NNTP authentication is slightly wonky, due to edge cases that are not seen
   * in other protocols. Authentication is not necessary; if authentication is
   * used, it could be configured on a per-group basis or even require only a
   * username and not a password.
   *
   * Since passwords could be per-group, it is necessary to refer to passwords
   * using the methods on this interface and not nsIMsgIncomingServer. Passwords
   * for the server as a whole are found via the root folder. If the server is
   * configured to use single sign-on (the default), asking any group for its
   * password will result in the server's password, otherwise, each group stores
   * its password individually.
   *
   * Due to this setup, most of the password management functions on
   * nsIMsgIncomingServer do not correctly work. The only one that would affect
   * the passwords stored on folders correctly is forgetPassword; using any
   * other on a news server would result in inconsistent state.
   *
   * Before requesting either the username or password for authentication, it is
   * first necessary to call getAuthenticationCredentials. If the method returns
   * true, then groupUsername and groupPassword are appropriately set up for
   * necessary authentication; if not, then authentication must be stopped.
   */

  /// The URL used when storing passwords for this folder.
  readonly attribute AString urlForSignon;

  /// The username that should be used for this group
  attribute ACString groupUsername;

  /// The password that should be used for this group
  attribute ACString groupPassword;

  nsIMsgFolder addNewsgroup(in AUTF8String newsgroupName, in ACString setStr);

  void setReadSetFromStr(in ACString setStr);

  /// returns the server's default charset.
  readonly attribute ACString charset;

  readonly attribute AUTF8String newsrcLine;
  void SetNewsrcHasChanged(in boolean newsrcHasChanged);
  void updateSummaryFromNNTPInfo(in long oldest, in long youngest, in long total);
  void removeMessage(in nsMsgKey key);
  void removeMessages(in Array<nsMsgKey> keys);
  void cancelComplete();

  ACString getMessageIdForKey(in nsMsgKey key);

  void getNextNMessages(in nsIMsgWindow aMsgWindow);

  /**
   * Feed the article (message) into the folder, allowing offline storage
   * to take place if configured.
   *
   * @param articleNumber - The article being loaded. It must already be in
   *   the database.
   * @param data - Article data, including end-of-line terminators.
   */
  void notifyArticleDownloaded(in unsigned long articleNumber, in ACString data);

  void notifyFinishedDownloadinghdrs();

  /**
   * Requests that a message be canceled.
   *
   * Note that, before sending the news cancel, this method will check to make
   * sure that the user has proper permission to cancel the message.
   *
   * @param aMsgHdr     The header of the message to be canceled.
   * @param aUrlListener  Listener (if any) for the operation.
   * @param aMsgWindow  The standard message window object, for error dialogs.
   */
  void cancelMessage(in nsIMsgDBHdr aMsgHdr, in nsIUrlListener aUrlListener, in nsIMsgWindow aMsgWindow);

  void refreshSizeOnDisk();
};