// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "chrome/browser/net/chrome_network_delegate.h"

#include "base/logging.h"
#include "chrome/browser/extensions/extension_event_router_forwarder.h"
#include "chrome/browser/extensions/extension_proxy_api.h"
#include "chrome/browser/extensions/extension_webrequest_api.h"
#include "net/base/net_errors.h"
#include "net/http/http_request_headers.h"
#include "net/url_request/url_request.h"

namespace {

// If the |request| failed due to problems with a proxy, forward the error to
// the proxy extension API.
void ForwardProxyErrors(net::URLRequest* request,
                        ExtensionEventRouterForwarder* event_router,
                        ProfileId profile_id) {
  if (request->status().status() == net::URLRequestStatus::FAILED) {
    switch (request->status().os_error()) {
      case net::ERR_PROXY_AUTH_UNSUPPORTED:
      case net::ERR_PROXY_CONNECTION_FAILED:
      case net::ERR_TUNNEL_CONNECTION_FAILED:
        ExtensionProxyEventRouter::GetInstance()->OnProxyError(
            event_router, profile_id, request->status().os_error());
    }
  }
}

}  // namespace

ChromeNetworkDelegate::ChromeNetworkDelegate(
    ExtensionEventRouterForwarder* event_router,
    ProfileId profile_id)
    : event_router_(event_router),
      profile_id_(profile_id) {
}

ChromeNetworkDelegate::~ChromeNetworkDelegate() {}

bool ChromeNetworkDelegate::OnBeforeURLRequest(
    net::URLRequest* request, net::CompletionCallback* callback) {
  return ExtensionWebRequestEventRouter::GetInstance()->OnBeforeRequest(
      profile_id_, event_router_.get(), request, callback);
}

void ChromeNetworkDelegate::OnSendHttpRequest(
    net::HttpRequestHeaders* headers) {
  DCHECK(headers);
}

void ChromeNetworkDelegate::OnResponseStarted(net::URLRequest* request) {
  ForwardProxyErrors(request, event_router_.get(), profile_id_);
}

void ChromeNetworkDelegate::OnReadCompleted(net::URLRequest* request,
                                            int bytes_read) {
  ForwardProxyErrors(request, event_router_.get(), profile_id_);
}