/*
 * Copyright (C) 2013 Google Inc. All rights reserved.
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 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
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 * in the documentation and/or other materials provided with the
 * distribution.
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 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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#ifndef THIRD_PARTY_BLINK_PUBLIC_WEB_MODULES_SERVICE_WORKER_WEB_SERVICE_WORKER_CONTEXT_CLIENT_H_
#define THIRD_PARTY_BLINK_PUBLIC_WEB_MODULES_SERVICE_WORKER_WEB_SERVICE_WORKER_CONTEXT_CLIENT_H_

#include <memory>

#include "base/time/time.h"
#include "third_party/blink/public/mojom/service_worker/service_worker_event_status.mojom-shared.h"
#include "third_party/blink/public/platform/modules/service_worker/web_service_worker_stream_handle.h"
#include "third_party/blink/public/platform/web_feature.mojom-shared.h"
#include "third_party/blink/public/platform/web_url.h"
#include "third_party/blink/public/platform/web_worker_fetch_context.h"
#include "v8/include/v8.h"

namespace blink {

struct WebPaymentHandlerResponse;
class WebServiceWorkerContextProxy;
class WebServiceWorkerNetworkProvider;
class WebServiceWorkerProvider;
class WebServiceWorkerResponse;
class WebString;

// WebServiceWorkerContextClient is a "client" of a service worker execution
// context. This interface is implemented by the embedder and allows the
// embedder to communicate with the service worker execution context.  It is
// created on the main thread and then passed on to the worker thread by a newly
// created ServiceWorkerGlobalScope.
//
// Unless otherwise noted, all methods of this class are called on the worker
// thread.
class WebServiceWorkerContextClient {
 public:
  virtual ~WebServiceWorkerContextClient() = default;

  // ServiceWorker has prepared everything for script loading and is now ready
  // for DevTools inspection.
  virtual void WorkerReadyForInspection() {}

  // Starting the worker failed. This could happen when loading the worker
  // script failed, or the worker was asked to terminate before startup
  // completed. Called on the main thread.
  virtual void WorkerContextFailedToStart() {}

  // The worker started but it could not execute because loading the
  // installed script failed.
  virtual void FailedToLoadInstalledScript() {}

  // The worker script successfully loaded. Called on the main thread when the
  // script is served from ResourceLoader or on the worker thread when the
  // script is served via WebServiceWorkerInstalledScriptsManager.
  //
  // This may be called before or after WorkerContextStarted(). Script
  // evaluation does not start until WillEvaluateClassicScript().
  virtual void WorkerScriptLoaded() {}

  // Called when a WorkerGlobalScope was created for the worker thread. This
  // also gives a proxy to the embedder to talk to the newly created
  // WorkerGlobalScope. The proxy is owned by WorkerGlobalScope and should not
  // be destroyed by the caller. No proxy methods should be called after
  // willDestroyWorkerContext() is called.
  //
  // This may be called before or after WorkerScriptLoaded(). Script evaluation
  // does not start until WillEvaluateClassicScript().
  virtual void WorkerContextStarted(WebServiceWorkerContextProxy*) {}

  // Called immediately before V8 script evaluation starts. This means all setup
  // is finally complete: the script has been loaded, the worker thread has
  // started, the script has been passed to the worker thread, and CSP and
  // ReferrerPolicy information has been set on the worker thread.
  virtual void WillEvaluateClassicScript() {}

  // Called when initial script evaluation finished. |success| is true if the
  // evaluation completed with no uncaught exception.
  virtual void DidEvaluateClassicScript(bool success) {}

  // Called when the worker context is initialized. This is probably called
  // after WorkerContextStarted(). (WorkerThread::InitializeOnWorkerThread()
  // calls WorkerContextStarted() via
  // WorkerReportingProxy::DidCreateWorkerGlobalScope(),
  // and then initializes the worker context if "needed" and calls
  // DidInitializeWorkerContext(), but it's not clear when the context would
  // already be initialized.)
  //
  // This function is used to support service workers in Chrome extensions.
  //
  // TODO(nhiroki): Can you clarify this code and comment?
  virtual void DidInitializeWorkerContext(v8::Local<v8::Context> context) {}

  // WorkerGlobalScope is about to be destroyed. The client should clear
  // the WebServiceWorkerGlobalScopeProxy when this is called.
  virtual void WillDestroyWorkerContext(v8::Local<v8::Context> context) {}

  // WorkerGlobalScope was destroyed and the worker is ready to be terminated.
  virtual void WorkerContextDestroyed() {}

  // Called when some API to be recorded in UseCounter is called on the worker
  // global scope.
  virtual void CountFeature(mojom::WebFeature feature) {}

  // Called when the WorkerGlobalScope had an error or an exception.
  virtual void ReportException(const WebString& error_message,
                               int line_number,
                               int column_number,
                               const WebString& source_url) {}

  // Called when a console message was written.
  virtual void ReportConsoleMessage(int source,
                                    int level,
                                    const WebString& message,
                                    int line_number,
                                    const WebString& source_url) {}

  // Called after an 'activate' event completed.
  virtual void DidHandleActivateEvent(int event_id,
                                      mojom::ServiceWorkerEventStatus,
                                      base::TimeTicks event_dispatch_time) {}

  // Called after Background Fetch events (dispatched via
  // WebServiceWorkerContextProxy) are handled by the service worker.
  virtual void DidHandleBackgroundFetchAbortEvent(
      int event_id,
      mojom::ServiceWorkerEventStatus,
      base::TimeTicks event_dispatch_time) {}
  virtual void DidHandleBackgroundFetchClickEvent(
      int event_id,
      mojom::ServiceWorkerEventStatus,
      base::TimeTicks event_dispatch_time) {}
  virtual void DidHandleBackgroundFetchFailEvent(
      int event_id,
      mojom::ServiceWorkerEventStatus,
      base::TimeTicks event_dispatch_time) {}
  virtual void DidHandleBackgroundFetchSuccessEvent(
      int event_id,
      mojom::ServiceWorkerEventStatus,
      base::TimeTicks event_dispatch_time) {}

  // Called after 'cookiechange' events are handled by the service worker.
  virtual void DidHandleCookieChangeEvent(int event_id,
                                          mojom::ServiceWorkerEventStatus,
                                          base::TimeTicks event_dispatch_time) {
  }

  // Called after ExtendableMessageEvent was handled by the service worker.
  virtual void DidHandleExtendableMessageEvent(
      int event_id,
      mojom::ServiceWorkerEventStatus,
      base::TimeTicks event_dispatch_time) {}

  // RespondToFetchEvent* will be called after the service worker returns a
  // response to a FetchEvent, and DidHandleFetchEvent will be called after the
  // end of FetchEvent's lifecycle. |fetch_event_id| is the id that was passed
  // to DispatchFetchEvent.

  // Used when respondWith() is not called. Tells the browser to fall back to
  // native fetch.
  virtual void RespondToFetchEventWithNoResponse(
      int fetch_event_id,
      base::TimeTicks event_dispatch_time) {}
  // Responds to the fetch event with |response|.
  virtual void RespondToFetchEvent(int fetch_event_id,
                                   const WebServiceWorkerResponse& response,
                                   base::TimeTicks event_dispatch_time) {}
  // Responds to the fetch event with |response|, where body is
  // |body_as_stream|.
  virtual void RespondToFetchEventWithResponseStream(
      int fetch_event_id,
      const WebServiceWorkerResponse& response,
      WebServiceWorkerStreamHandle* body_as_stream,
      base::TimeTicks event_dispatch_time) {}
  virtual void DidHandleFetchEvent(int fetch_event_id,
                                   mojom::ServiceWorkerEventStatus,
                                   base::TimeTicks event_dispatch_time) {}

  // Called after InstallEvent (dispatched via WebServiceWorkerContextProxy) is
  // handled by the service worker.
  virtual void DidHandleInstallEvent(int install_event_id,
                                     mojom::ServiceWorkerEventStatus,
                                     base::TimeTicks event_dispatch_time) {}

  // Called after NotificationClickEvent (dispatched via
  // WebServiceWorkerContextProxy) is handled by the service worker.
  virtual void DidHandleNotificationClickEvent(
      int event_id,
      mojom::ServiceWorkerEventStatus,
      base::TimeTicks event_dispatch_time) {}

  // Called after NotificationCloseEvent (dispatched via
  // WebServiceWorkerContextProxy) is handled by the service worker.
  virtual void DidHandleNotificationCloseEvent(
      int event_id,
      mojom::ServiceWorkerEventStatus,
      base::TimeTicks event_dispatch_time) {}

  // Called after PushEvent (dispatched via WebServiceWorkerContextProxy) is
  // handled by the service worker.
  virtual void DidHandlePushEvent(int push_event_id,
                                  mojom::ServiceWorkerEventStatus,
                                  base::TimeTicks event_dispatch_time) {}

  // Called after SyncEvent (dispatched via WebServiceWorkerContextProxy) is
  // handled by the service worker.
  virtual void DidHandleSyncEvent(int sync_event_id,
                                  mojom::ServiceWorkerEventStatus,
                                  base::TimeTicks event_dispatch_time) {}

  // RespondToAbortPaymentEvent will be called after the service worker
  // returns a response to a AbortPaymentEvent, and DidHandleAbortPaymentEvent
  // will be called after the end of AbortPaymentEvent's lifecycle.
  // |event_id| is the id that was passed to DispatchAbortPaymentEvent.
  virtual void RespondToAbortPaymentEvent(int event_id,
                                          bool abort_payment,
                                          base::TimeTicks event_dispatch_time) {
  }
  // Called after AbortPaymentEvent (dispatched
  // via WebServiceWorkerContextProxy) is handled by the service worker.
  virtual void DidHandleAbortPaymentEvent(int abort_payment_event_id,
                                          mojom::ServiceWorkerEventStatus,
                                          base::TimeTicks event_dispatch_time) {
  }

  // RespondToCanMakePaymentEvent will be called after the service worker
  // returns a response to a CanMakePaymentEvent, and
  // DidHandleCanMakePaymentEvent will be called after the end of
  // CanMakePaymentEvent's lifecycle. |event_id| is the id that was passed
  // to DispatchCanMakePaymentEvent.
  virtual void RespondToCanMakePaymentEvent(
      int event_id,
      bool can_make_payment,
      base::TimeTicks event_dispatch_time) {}
  // Called after CanMakePaymentEvent (dispatched
  // via WebServiceWorkerContextProxy) is handled by the service worker.
  virtual void DidHandleCanMakePaymentEvent(
      int payment_request_event_id,
      mojom::ServiceWorkerEventStatus,
      base::TimeTicks event_dispatch_time) {}

  // RespondToPaymentRequestEvent will be called after the service worker
  // returns a response to a PaymentRequestEvent, and
  // DidHandlePaymentRequestEvent will be called after the end of
  // PaymentRequestEvent's lifecycle. |event_id| is the id that was passed
  // to DispatchPaymentRequestEvent.
  virtual void RespondToPaymentRequestEvent(
      int event_id,
      const WebPaymentHandlerResponse& response,
      base::TimeTicks event_dispatch_time) {}
  // Called after PaymentRequestEvent (dispatched via
  // WebServiceWorkerContextProxy) is handled by the service worker.
  virtual void DidHandlePaymentRequestEvent(
      int payment_request_event_id,
      mojom::ServiceWorkerEventStatus,
      base::TimeTicks event_dispatch_time) {}

  // Called on the main thread.
  virtual std::unique_ptr<WebServiceWorkerNetworkProvider>
  CreateServiceWorkerNetworkProvider() = 0;

  // Creates a WebWorkerFetchContext for a service worker. This is called on the
  // main thread.
  virtual std::unique_ptr<blink::WebWorkerFetchContext>
  CreateServiceWorkerFetchContext(WebServiceWorkerNetworkProvider*) {
    return nullptr;
  }

  // Called on the main thread.
  virtual std::unique_ptr<WebServiceWorkerProvider>
  CreateServiceWorkerProvider() = 0;
};

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_PUBLIC_WEB_MODULES_SERVICE_WORKER_WEB_SERVICE_WORKER_CONTEXT_CLIENT_H_