/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 "domstubs.idl"

interface nsIArray;
interface nsIDocument;
interface nsIInterceptedChannel;
interface nsIPrincipal;
interface nsIURI;

[scriptable, uuid(52ee2c9d-ee87-4caf-9588-23ae77ff8798)]
interface nsIServiceWorkerUnregisterCallback : nsISupports
{
  // aState is true if the unregistration succeded.
  // It's false if this ServiceWorkerRegistration doesn't exist.
  void unregisterSucceeded(in bool aState);
  void unregisterFailed();
};

[scriptable, builtinclass, uuid(8ce0d197-5740-4ddf-aa4a-e5a63e611d03)]
interface nsIServiceWorkerInfo : nsISupports
{
  readonly attribute nsIPrincipal principal;

  readonly attribute DOMString scope;
  readonly attribute DOMString scriptSpec;
  readonly attribute DOMString currentWorkerURL;

  readonly attribute DOMString activeCacheName;
  readonly attribute DOMString waitingCacheName;
};

[scriptable, builtinclass, uuid(384c9aec-29e5-4bdb-abc2-fba10da83e17)]
interface nsIServiceWorkerManager : nsISupports
{
  /**
   * Registers a ServiceWorker with script loaded from `aScriptURI` to act as
   * the ServiceWorker for aScope.  Requires a valid entry settings object on
   * the stack. This means you must call this from content code 'within'
   * a window.
   *
   * Returns a Promise.
   */
  nsISupports register(in nsIDOMWindow aWindow, in nsIURI aScope, in nsIURI aScriptURI);

  /**
   * Unregister an existing ServiceWorker registration for `aScope`.
   * It keeps aCallback alive until the operation is concluded.
   */
  void unregister(in nsIPrincipal aPrincipal,
                  in nsIServiceWorkerUnregisterCallback aCallback,
                  in DOMString aScope);

  // Returns a Promise
  nsISupports getRegistrations(in nsIDOMWindow aWindow);

  // Returns a Promise
  nsISupports getRegistration(in nsIDOMWindow aWindow, in DOMString aScope);

  // Returns a Promise
  nsISupports getReadyPromise(in nsIDOMWindow aWindow);

  // Remove ready pending Promise
  void removeReadyPromise(in nsIDOMWindow aWindow);

  // Returns true if a ServiceWorker is available for the scope of aURI.
  bool isAvailableForURI(in nsIURI aURI);

  // Returns true if a given document is currently controlled by a ServiceWorker
  bool isControlled(in nsIDocument aDocument);

  // Cause a fetch event to be dispatched to the worker global associated with the given document.
  void dispatchFetchEvent(in nsIDocument aDoc, in nsIInterceptedChannel aChannel,
                          in boolean aIsReload);

  /**
   * Call this to request that document `aDoc` be controlled by a ServiceWorker
   * if a registration exists for it's scope.
   *
   * This MUST only be called once per document!
   */
  [notxpcom,nostdcall] void MaybeStartControlling(in nsIDocument aDoc);

  /**
   * Documents that have called MaybeStartControlling() should call this when
   * they are destroyed. This function may be called multiple times, and is
   * idempotent.
   */
  [notxpcom,nostdcall] void MaybeStopControlling(in nsIDocument aDoc);

  /*
   * Returns a ServiceWorker.
   * window is the window of the caller. scope is the registration's scope and must be
   * a valid entry that window is allowed to load, otherwise this will return nullptr.
   * These are only meant to be called from ServiceWorkerRegistration instances.
   */
  [noscript] nsISupports GetInstalling(in nsIDOMWindow aWindow, in DOMString aScope);
  [noscript] nsISupports GetWaiting(in nsIDOMWindow aWindow, in DOMString aScope);
  [noscript] nsISupports GetActive(in nsIDOMWindow aWindow, in DOMString aScope);

  /*
   * Returns a ServiceWorker.
   */
  [noscript] nsISupports GetDocumentController(in nsIDOMWindow aWindow);

  /*
   * This implements the soft update algorithm.
   */
  void softUpdate(in DOMString aScope);

  /*
   * Clears ServiceWorker registrations from memory and disk for the specified
   * host.
   * - All ServiceWorker instances change their state to redundant.
   * - Existing ServiceWorker instances handling fetches will keep running.
   * - All documents will immediately stop being controlled.
   * - Unregister jobs will be queued for all registrations.
   *   This eventually results in the registration being deleted from disk too.
   */
  void remove(in AUTF8String aHost);

  /*
   * Clear all registrations for all hosts. See remove().
   */
  void removeAll();

  // Testing
  DOMString getScopeForUrl(in DOMString path);

  // This is meant to be used only by about:serviceworkers. It returns an array
  // of nsIServiceWorkerInfo.
  nsIArray getAllRegistrations();

  void sendPushEvent(in ACString scope, in DOMString data);
  void sendPushSubscriptionChangeEvent(in ACString scope);

  void updateAllRegistrations();
};

%{ C++
#define SERVICEWORKERMANAGER_CONTRACTID "@mozilla.org/serviceworkers/manager;1"
%}
