/* -*- 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 local files or other hostless schemes.
   * @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.
                   Note that not all flags will make sense (e.g. we can't clear
                   certificates for local files). Nonsensical flags will be
                   ignored.
   * @param aCallback this callback will be executed when the operation is
   *                  completed.
   */
  void deleteDataFromLocalFiles(in bool aIsUserRequest,
                                in uint32_t aFlags,
                                in nsIClearDataCallback aCallback);
  /**
   * 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);

  /**
   * Delete all data from an OriginAttributesPatternDictionary.
   * @param aOriginAttributesPattern the originAttributes dictionary.
   * @param aCallback the optional callback will be executed when the operation
   *                  is completed.
   */
  void deleteDataFromOriginAttributesPattern(in jsval aOriginAttributesPattern,
                                             [optional] in nsIClearDataCallback aCallback);

  /**
   * This is a helper function to clear storageAccessAPI permissions
   * in a way that will not result in users getting logged out by
   * cookie purging. To that end we only clear permissions for principals
   * whose base domain does not have any storage associated with it.
   *
   * The principals to be considered will need to be passed by the API consumer.
   * It is recommended to use PrincipalsCollector.jsm for that.
   *
   * @param aPrincipalsWithStorage principals to be excluded from clearing
   * @param aFrom microseconds from the epoch
   * @param aCallback the optional callback will be executed when the operation
   *                  is completed.
   */
  void deleteUserInteractionForClearingHistory(in Array<nsIPrincipal> aPrincipalsWithStorage,
                                               [optional] in PRTime aFrom,
                                               [optional] 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;

  /**
   * Reporting API reports.
   */
  const uint32_t CLEAR_REPORTS = 1 << 19;

  /**
   * StorageAccessAPI flag, which indicates user interaction.
   */
  const uint32_t CLEAR_STORAGE_ACCESS = 1 << 20;

  /**
   * Clear Cert Exceptions.
   */
  const uint32_t CLEAR_CERT_EXCEPTIONS = 1 << 21;

  /**
   * Clear entries in the content blocking database.
   */
  const uint32_t CLEAR_CONTENT_BLOCKING_RECORDS = 1 << 22;

  /**
   * Clear the in-memory CSS cache.
   */
  const uint32_t CLEAR_CSS_CACHE = 1 << 23;

  /**
   * 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 | CLEAR_CSS_CACHE;

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

  /**
   * Helper flag for forget about site
   */
  const uint32_t CLEAR_FORGET_ABOUT_SITE =
    CLEAR_HISTORY | CLEAR_SESSION_HISTORY | CLEAR_ALL_CACHES |
    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 | CLEAR_REPORTS | CLEAR_CERT_EXCEPTIONS;
};

/**
 * 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);
};