/* 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 nsIURI;
interface nsIVariant;

[scriptable, uuid(41e4ccc9-f0c8-4cd7-9753-7a38514b8488)]
interface mozIVisitInfo : nsISupports
{
  /**
   * The machine-local (internal) id of the visit.
   */
  readonly attribute long long visitId;

  /**
   * The time the visit occurred.
   */
  readonly attribute PRTime visitDate;

  /**
   * The transition type used to get to this visit.  One of the TRANSITION_TYPE
   * constants on nsINavHistory.
   *
   * @see nsINavHistory.idl
   */
  readonly attribute unsigned long transitionType;

  /**
   * The referring URI of this visit.  This may be null.
   */
  readonly attribute nsIURI referrerURI;
};

[scriptable, uuid(ad83e137-c92a-4b7b-b67e-0a318811f91e)]
interface mozIPlaceInfo : nsISupports
{
  /**
   * The machine-local (internal) id of the place.
   */
  readonly attribute long long placeId;

  /**
   * The globally unique id of the place.
   */
  readonly attribute ACString guid;

  /**
   * The URI of the place.
   */
  readonly attribute nsIURI uri;

  /**
   * The title associated with the place.
   */
  readonly attribute AString title;

  /**
   * The frecency of the place.
   */
  readonly attribute long long frecency;

  /**
   * An array of mozIVisitInfo objects for the place.
   */
  [implicit_jscontext]
  readonly attribute jsval visits;
};

/**
 * Shared Callback interface for mozIAsyncHistory methods. The semantics
 * for each method are detailed in mozIAsyncHistory.
 */
[scriptable, uuid(1f266877-2859-418b-a11b-ec3ae4f4f93d)]
interface mozIVisitInfoCallback : nsISupports
{
  /**
   * Called when the given place could not be processed.
   *
   * @param aResultCode
   *        nsresult indicating the failure reason.
   * @param aPlaceInfo
   *        The information that was given to the caller for the place.
   */
  void handleError(in nsresult aResultCode,
                   in mozIPlaceInfo aPlaceInfo);

  /**
   * Called for each place processed successfully.
   *
   * @param aPlaceInfo
   *        The current info stored for the place.
   */
  void handleResult(in mozIPlaceInfo aPlaceInfo);

  /**
   * Called when all records were processed.
   * @param aUpdatedItems
   *        How many items were successfully updated.
   */
  void handleCompletion(in unsigned long aUpdatedItems);

  /**
   * These two attributes govern whether we attempt to call
   * handleResult and handleError, respectively, if/once
   * results/errors occur.
   */
  readonly attribute bool ignoreResults;
  readonly attribute bool ignoreErrors;
};

[scriptable, function, uuid(994092bf-936f-449b-8dd6-0941e024360d)]
interface mozIVisitedStatusCallback : nsISupports
{
  /**
   * Notifies whether a certain URI has been visited.
   *
   * @param aURI
   *        URI being notified about.
   * @param aVisitedStatus
   *        The visited status of aURI.
   */
  void isVisited(in nsIURI aURI,
                 in boolean aVisitedStatus);
};

/**
 * This interface contains APIs for cpp consumers.
 * Javascript consumers should look at History.jsm instead,
 * that is exposed through PlacesUtils.history.
 *
 * If you're evaluating adding a new history API, it should
 * usually go to History.jsm, unless it needs to do long and
 * expensive work in a batch, then it could be worth doing
 * that in History.cpp.
 */

[scriptable, uuid(1643EFD2-A329-4733-A39D-17069C8D3B2D)]
interface mozIAsyncHistory : nsISupports
{
  /**
   * Adds a set of visits for one or more mozIPlaceInfo objects, and updates
   * each mozIPlaceInfo's title or guid.
   *
   * aCallback.handleResult is called for each visit added.
   *
   * @param aPlaceInfo
   *        The mozIPlaceInfo object[s] containing the information to store or
   *        update.  This can be a single object, or an array of objects.
   * @param [optional] aCallback
   *        A mozIVisitInfoCallback object which consists of callbacks to be
   *        notified for successful and/or failed changes.
   *
   * @throws NS_ERROR_INVALID_ARG
   *         - Passing in NULL for aPlaceInfo.
   *         - Not providing at least one valid guid, or uri for all
   *           mozIPlaceInfo object[s].
   *         - Not providing an array or nothing for the visits property of
   *           mozIPlaceInfo.
   *         - Not providing a visitDate and transitionType for each
   *           mozIVisitInfo.
   *         - Providing an invalid transitionType for a mozIVisitInfo.
   */
  [implicit_jscontext]
  void updatePlaces(in jsval aPlaceInfo,
                    [optional] in mozIVisitInfoCallback aCallback);

  /**
   * Checks if a given URI has been visited.
   *
   * @param aURI
   *        The URI to check for.
   * @param aCallback
   *        A mozIVisitStatusCallback object which receives the visited status.
   */
  void isURIVisited(in nsIURI aURI,
                    in mozIVisitedStatusCallback aCallback);

  /**
   * Helper to clear any internal state caches, like the recent URIs list.
   * This may be useful in testing code.
   */
  void clearCache();
};