/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* 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"

interface nsIPrincipal;
interface nsIClearDataCallback;

/**
 * nsIClearDataService
 *
 * Provides methods for cleaning data from a nsIPrincipal and/or from a time
 * range.
 */
[scriptable, uuid(6ef3ef16-a502-4576-9fb4-919f1c40bf61)]
interface nsIClearDataService : nsISupports
{
  /**
   * Delete data owned by a host. For instance: mozilla.org. Data from any
   * possible originAttributes will be deleted.
   * @param aHost the host to be used.
   * @param aIsUserRequest true if this request comes from a user interaction.
   *        This information is important because if true, it's probably better
   *        to remove more than less, for privacy reason. If false (e.g.
   *        Clear-Site-Data header), we don't want to delete more than what is
   *        strictly required.
   * @param aFlags List of flags. See below the accepted values.
   * @param aCallback this callback will be executed when the operation is
   *                  completed.
   */
  void deleteDataFromHost(in AUTF8String aHost,
                          in bool aIsUserRequest,
                          in uint32_t aFlags,
                          in nsIClearDataCallback aCallback);

  /**
   * Delete data owned by a principal.
   * @param aPrincipal the nsIPrincipal to be used.
   * @param aIsUserRequest true if this request comes from a user interaction.
   *        This information is important because if true, it's probably better
   *        to remove more than less, for privacy reason. If false (e.g.
   *        Clear-Site-Data header), we don't want to delete more than what is
   *        strictly required.
   * @param aFlags List of flags. See below the accepted values.
   * @param aCallback ths callback will be executed when the operation is
   *                  completed.
   */
  void deleteDataFromPrincipal(in nsIPrincipal aPrincipal,
                               in bool aIsUserRequest,
                               in uint32_t aFlags,
                               in nsIClearDataCallback aCallback);

  /**
   * Delete all data in a time range. Limit excluded.
   * @param aFrom microseconds from the epoch
   * @param aTo microseconds from the epoch
   * @param aIsUserRequest true if this request comes from a user interaction.
   *        This information is important because if true, it's probably better
   *        to remove more than less, for privacy reason. If false (e.g.
   *        Clear-Site-Data header), we don't want to delete more than what is
   *        strictly required.
   * @param aFlags List of flags. See below the accepted values.
   * @param aCallback ths callback will be executed when the operation is
   *                  completed.
   */
  void deleteDataInTimeRange(in PRTime aFrom, in PRTime aTo,
                             in bool aIsUserRequest,
                             in uint32_t aFlags,
                             in nsIClearDataCallback aCallback);

  /**
   * Delete all data from any host, in any time range.
   * @param aFlags List of flags. See below the accepted values.
   * @param aCallback ths callback will be executed when the operation is
   *                  completed.
   */
  void deleteData(in uint32_t aFlags,
                  in nsIClearDataCallback aCallback);

  /**************************************************************************
   * Listed below are the various flags which may be or'd together.
   */

  /**
   * Delete cookies.
   */
  const uint32_t CLEAR_COOKIES = 1 << 0;

  /**
   * Network Cache.
   */
  const uint32_t CLEAR_NETWORK_CACHE = 1 << 1;

  /**
   * Image cache.
   */
  const uint32_t CLEAR_IMAGE_CACHE = 1 << 2;

  /**
   * Data stored by external plugins.
   */
  const uint32_t CLEAR_PLUGIN_DATA = 1 << 3;

  /**
   * Completed downloads.
   */
  const uint32_t CLEAR_DOWNLOADS = 1 << 4;

  /**
   * Stored passwords.
   */
  const uint32_t CLEAR_PASSWORDS = 1 << 5;

  /**
   * Media devices.
   */
  const uint32_t CLEAR_MEDIA_DEVICES = 1 << 6;

  /**
   * AppCache.
   */
  const uint32_t CLEAR_APPCACHE = 1 << 7;

  /**
   * LocalStorage, IndexedDB, ServiceWorkers, DOM Cache and so on.
   */
  const uint32_t CLEAR_DOM_QUOTA = 1 << 8;

  /**
   * Predictor network data
   */
  const uint32_t CLEAR_PREDICTOR_NETWORK_DATA = 1 << 9;

  /**
   * DOM Push notifications
   */
  const uint32_t CLEAR_DOM_PUSH_NOTIFICATIONS = 1 << 10;

  /**
   * Places history
   */
  const uint32_t CLEAR_HISTORY = 1 << 11;

  /**
   * Session history
   */
  const uint32_t CLEAR_SESSION_HISTORY = 1 << 12;

  /**
   * Auth tokens
   */
  const uint32_t CLEAR_AUTH_TOKENS = 1 << 13;

  /**
   * Login cache
   */
  const uint32_t CLEAR_AUTH_CACHE = 1 << 14;

  /**
   * Site permissions
   */
  const uint32_t CLEAR_PERMISSIONS = 1 << 15;

  /**
   * Site preferences
   */
  const uint32_t CLEAR_CONTENT_PREFERENCES = 1 << 16;

  /**
   * Secure site settings
   */
  const uint32_t CLEAR_SECURITY_SETTINGS = 1 << 17;

  /**
   * Media plugin data
   */
  const uint32_t CLEAR_EME = 1 << 18;

  /**
   * Use this value to delete all the data.
   */
  const uint32_t CLEAR_ALL = 0xFFFFFF;

  /**************************************************************************
   * The following flags are helpers: they combine some of the previous flags
   * in a more convenient way.
   */

  /**
   * Delete all the possible caches.
   */
  const uint32_t CLEAR_ALL_CACHES = CLEAR_NETWORK_CACHE | CLEAR_IMAGE_CACHE;

  /**
   * Delete all DOM storages
   */
  const uint32_t CLEAR_DOM_STORAGES = CLEAR_APPCACHE | CLEAR_DOM_QUOTA | CLEAR_DOM_PUSH_NOTIFICATIONS;

  /**
   * Helper flag for forget about site
   */
  const uint32_t CLEAR_FORGET_ABOUT_SITE =
    CLEAR_HISTORY | CLEAR_NETWORK_CACHE | CLEAR_IMAGE_CACHE | CLEAR_COOKIES |
    CLEAR_EME | CLEAR_PLUGIN_DATA | CLEAR_DOWNLOADS | CLEAR_PASSWORDS |
    CLEAR_PERMISSIONS | CLEAR_DOM_STORAGES | CLEAR_CONTENT_PREFERENCES |
    CLEAR_PREDICTOR_NETWORK_DATA | CLEAR_DOM_PUSH_NOTIFICATIONS |
    CLEAR_SECURITY_SETTINGS;
};

/**
 * This is a companion interface for
 * nsIClearDataService::deleteDataFromPrincipal().
 */
[function, scriptable, uuid(e225517b-24c5-498a-b9fb-9993e341a398)]
interface nsIClearDataCallback : nsISupports
{
  /**
   * Called to indicate that the data cleaning is completed.
   * @param aFailedFlags this value contains the flags that failed during the
   *                     cleanup. If nothing failed, aFailedFlags will be 0.
   */
  void onDataDeleted(in uint32_t aFailedFlags);
};