// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "components/page_load_metrics/browser/page_load_metrics_observer.h"

#include <utility>

#include "base/byte_size.h"
#include "net/base/load_timing_info.h"

namespace page_load_metrics {

ExtraRequestCompleteInfo::ExtraRequestCompleteInfo(
    const url::SchemeHostPort& final_url,
    const net::IPEndPoint& remote_endpoint,
    content::FrameTreeNodeId frame_tree_node_id,
    bool was_cached,
    base::ByteSize raw_body_bytes,
    base::ByteSize original_network_content_length,
    network::mojom::RequestDestination request_destination,
    int net_error,
    std::unique_ptr<net::LoadTimingInfo> load_timing_info)
    : final_url(final_url),
      remote_endpoint(remote_endpoint),
      frame_tree_node_id(frame_tree_node_id),
      was_cached(was_cached),
      raw_body_bytes(raw_body_bytes),
      original_network_content_length(original_network_content_length),
      request_destination(request_destination),
      net_error(net_error),
      load_timing_info(std::move(load_timing_info)) {}

ExtraRequestCompleteInfo::ExtraRequestCompleteInfo(
    const ExtraRequestCompleteInfo& other)
    : final_url(other.final_url),
      remote_endpoint(other.remote_endpoint),
      frame_tree_node_id(other.frame_tree_node_id),
      was_cached(other.was_cached),
      raw_body_bytes(other.raw_body_bytes),
      original_network_content_length(other.original_network_content_length),
      request_destination(other.request_destination),
      net_error(other.net_error),
      load_timing_info(other.load_timing_info == nullptr
                           ? nullptr
                           : std::make_unique<net::LoadTimingInfo>(
                                 *other.load_timing_info)) {}

ExtraRequestCompleteInfo::~ExtraRequestCompleteInfo() = default;

FailedProvisionalLoadInfo::FailedProvisionalLoadInfo(
    base::TimeDelta interval,
    net::Error error,
    int net_extended_error_code,
    std::optional<content::ErrorNavigationTrigger> error_navigation_trigger,
    content::NavigationDiscardReason discard_reason)
    : time_to_failed_provisional_load(interval),
      error(error),
      net_extended_error_code(net_extended_error_code),
      error_navigation_trigger(error_navigation_trigger),
      discard_reason(discard_reason) {}

FailedProvisionalLoadInfo::~FailedProvisionalLoadInfo() = default;

const char* PageLoadMetricsObserver::GetObserverName() const {
  return nullptr;
}

PageLoadMetricsObserver::ObservePolicy PageLoadMetricsObserver::OnStart(
    content::NavigationHandle* navigation_handle,
    const GURL& currently_committed_url,
    bool started_in_foreground) {
  return CONTINUE_OBSERVING;
}

PageLoadMetricsObserver::ObservePolicy
PageLoadMetricsObserver::OnNavigationHandleTimingUpdated(
    content::NavigationHandle* navigation_handle) {
  return CONTINUE_OBSERVING;
}

PageLoadMetricsObserver::ObservePolicy PageLoadMetricsObserver::OnRedirect(
    content::NavigationHandle* navigation_handle) {
  return CONTINUE_OBSERVING;
}

PageLoadMetricsObserver::ObservePolicy PageLoadMetricsObserver::OnCommit(
    content::NavigationHandle* navigation_handle) {
  return CONTINUE_OBSERVING;
}

PageLoadMetricsObserver::ObservePolicy PageLoadMetricsObserver::OnHidden(
    const mojom::PageLoadTiming& timing) {
  return CONTINUE_OBSERVING;
}

PageLoadMetricsObserver::ObservePolicy PageLoadMetricsObserver::OnShown() {
  return CONTINUE_OBSERVING;
}

PageLoadMetricsObserver::ObservePolicy
PageLoadMetricsObserver::OnEnterBackForwardCache(
    const mojom::PageLoadTiming& timing) {
  // Invoke OnComplete to ensure that recorded data is dumped.
  OnComplete(timing);
  return STOP_OBSERVING;
}

PageLoadMetricsObserver::ObservePolicy
PageLoadMetricsObserver::FlushMetricsOnAppEnterBackground(
    const mojom::PageLoadTiming& timing) {
  return CONTINUE_OBSERVING;
}

PageLoadMetricsObserver::ObservePolicy
PageLoadMetricsObserver::ShouldObserveMimeType(
    const std::string& mime_type) const {
  return IsStandardWebPageMimeType(mime_type) ? CONTINUE_OBSERVING
                                              : STOP_OBSERVING;
}

PageLoadMetricsObserver::ObservePolicy
PageLoadMetricsObserver::ShouldObserveScheme(const GURL& url) const {
  bool should_observe_scheme = url.SchemeIsHTTPOrHTTPS() ||
                               delegate_->ShouldObserveScheme(url.GetScheme());
  return should_observe_scheme ? CONTINUE_OBSERVING : STOP_OBSERVING;
}

// static
bool PageLoadMetricsObserver::IsStandardWebPageMimeType(
    const std::string& mime_type) {
  return mime_type == "text/html" || mime_type == "application/xhtml+xml";
}

PageLoadMetricsObserver::PageLoadMetricsObserver() = default;
PageLoadMetricsObserver::~PageLoadMetricsObserver() = default;

const PageLoadMetricsObserverDelegate& PageLoadMetricsObserver::GetDelegate()
    const {
  // The delegate must exist and outlive the page load metrics observer.
  CHECK(delegate_);
  return *delegate_;
}

void PageLoadMetricsObserver::SetDelegate(
    PageLoadMetricsObserverDelegate* delegate) {
  delegate_ = delegate;
}

}  // namespace page_load_metrics