/* -*- Mode: C++; 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 "msgCore.h"

#include "nsIWebProgress.h"
#include "nsIXULBrowserWindow.h"
#include "nsMsgStatusFeedback.h"
#include "mozilla/dom/Document.h"
#include "nsIDocShell.h"
#include "nsIDocShellTreeItem.h"
#include "nsIChannel.h"
#include "prinrval.h"
#include "nsIMsgMailNewsUrl.h"
#include "nsIMsgWindow.h"
#include "nsMsgUtils.h"
#include "nsIMsgHdr.h"
#include "nsIMsgFolder.h"
#include "nsMsgDBFolder.h"
#include "nsServiceManagerUtils.h"
#include "mozilla/Components.h"
#include "nsMsgUtils.h"

#define MSGFEEDBACK_TIMER_INTERVAL 500

nsMsgStatusFeedback::nsMsgStatusFeedback()
    : m_meteorsSpinning(false), m_lastPercent(0), m_lastProgressTime(0) {
  nsCOMPtr<nsIStringBundleService> bundleService =
      mozilla::components::StringBundle::Service();

  if (bundleService)
    bundleService->CreateBundle(
        "chrome://messenger/locale/messenger.properties",
        getter_AddRefs(mBundle));
}

nsMsgStatusFeedback::~nsMsgStatusFeedback() { mBundle = nullptr; }

NS_IMPL_ISUPPORTS(nsMsgStatusFeedback, nsIMsgStatusFeedback,
                  nsIProgressEventSink, nsIWebProgressListener,
                  nsISupportsWeakReference)

//////////////////////////////////////////////////////////////////////////////////
// nsMsgStatusFeedback::nsIWebProgressListener
//////////////////////////////////////////////////////////////////////////////////

NS_IMETHODIMP
nsMsgStatusFeedback::OnProgressChange(nsIWebProgress* aWebProgress,
                                      nsIRequest* aRequest,
                                      int32_t aCurSelfProgress,
                                      int32_t aMaxSelfProgress,
                                      int32_t aCurTotalProgress,
                                      int32_t aMaxTotalProgress) {
  int32_t percentage = 0;
  if (aMaxTotalProgress > 0) {
    percentage = (aCurTotalProgress * 100) / aMaxTotalProgress;
    if (percentage) ShowProgress(percentage);
  }

  return NS_OK;
}

NS_IMETHODIMP
nsMsgStatusFeedback::OnStateChange(nsIWebProgress* aWebProgress,
                                   nsIRequest* aRequest,
                                   uint32_t aProgressStateFlags,
                                   nsresult aStatus) {
  nsresult rv;

  NS_ENSURE_TRUE(mBundle, NS_ERROR_NULL_POINTER);
  if (aProgressStateFlags & STATE_IS_NETWORK) {
    if (aProgressStateFlags & STATE_START) {
      m_lastPercent = 0;
      StartMeteors();
      nsString loadingDocument;
      rv = mBundle->GetStringFromName("documentLoading", loadingDocument);
      if (NS_SUCCEEDED(rv)) ShowStatusString(loadingDocument);
    } else if (aProgressStateFlags & STATE_STOP) {
      // if we are loading message for display purposes, this STATE_STOP
      // notification is the only notification we get when layout is actually
      // done rendering the message. We need to fire the appropriate msgHdrSink
      // notification in this particular case.
      nsCOMPtr<nsIChannel> channel = do_QueryInterface(aRequest);
      if (channel) {
        nsCOMPtr<nsIURI> uri;
        channel->GetURI(getter_AddRefs(uri));
        nsCOMPtr<nsIMsgMailNewsUrl> mailnewsUrl(do_QueryInterface(uri));
        if (mailnewsUrl) {
          // get the url type
          bool messageDisplayUrl;
          mailnewsUrl->IsUrlType(nsIMsgMailNewsUrl::eDisplay,
                                 &messageDisplayUrl);

          if (messageDisplayUrl) {
            // get the folder and notify that the msg has been loaded. We're
            // using NotifyPropertyFlagChanged. To be completely consistent,
            // we'd send a similar notification that the old message was
            // unloaded.
            nsCOMPtr<nsIMsgDBHdr> msgHdr;
            nsCOMPtr<nsIMsgFolder> msgFolder;
            mailnewsUrl->GetFolder(getter_AddRefs(msgFolder));
            nsCOMPtr<nsIMsgMessageUrl> msgUrl = do_QueryInterface(mailnewsUrl);
            if (msgUrl) {
              // not sending this notification is not a fatal error...
              (void)msgUrl->GetMessageHeader(getter_AddRefs(msgHdr));
              if (msgFolder && msgHdr)
                msgFolder->NotifyPropertyFlagChanged(msgHdr, kMsgLoaded, 0, 1);
            }
          }
        }
      }
      StopMeteors();
      nsString documentDone;
      rv = mBundle->GetStringFromName("documentDone", documentDone);
      if (NS_SUCCEEDED(rv)) ShowStatusString(documentDone);
    }
  }
  return NS_OK;
}

NS_IMETHODIMP nsMsgStatusFeedback::OnLocationChange(
    nsIWebProgress* aWebProgress, nsIRequest* aRequest, nsIURI* aLocation,
    uint32_t aFlags) {
  return NS_OK;
}

NS_IMETHODIMP
nsMsgStatusFeedback::OnStatusChange(nsIWebProgress* aWebProgress,
                                    nsIRequest* aRequest, nsresult aStatus,
                                    const char16_t* aMessage) {
  return NS_OK;
}

NS_IMETHODIMP
nsMsgStatusFeedback::OnSecurityChange(nsIWebProgress* aWebProgress,
                                      nsIRequest* aRequest, uint32_t state) {
  return NS_OK;
}

NS_IMETHODIMP
nsMsgStatusFeedback::OnContentBlockingEvent(nsIWebProgress* aWebProgress,
                                            nsIRequest* aRequest,
                                            uint32_t aEvent) {
  return NS_OK;
}

NS_IMETHODIMP
nsMsgStatusFeedback::ShowStatusString(const nsAString& aStatus) {
  nsCOMPtr<nsIMsgStatusFeedback> jsStatusFeedback(
      do_QueryReferent(mJSStatusFeedbackWeak));
  if (jsStatusFeedback) jsStatusFeedback->ShowStatusString(aStatus);
  return NS_OK;
}

NS_IMETHODIMP
nsMsgStatusFeedback::SetStatusString(const nsAString& aStatus) {
  nsCOMPtr<nsIMsgStatusFeedback> jsStatusFeedback(
      do_QueryReferent(mJSStatusFeedbackWeak));
  if (jsStatusFeedback) jsStatusFeedback->SetStatusString(aStatus);
  return NS_OK;
}

NS_IMETHODIMP
nsMsgStatusFeedback::ShowProgress(int32_t aPercentage) {
  // if the percentage hasn't changed...OR if we are going from 0 to 100% in one
  // step then don't bother....just fall out....
  if (aPercentage == m_lastPercent ||
      (m_lastPercent == 0 && aPercentage >= 100))
    return NS_OK;

  m_lastPercent = aPercentage;

  int64_t nowMS = 0;
  if (aPercentage < 100)  // always need to do 100%
  {
    nowMS = PR_IntervalToMilliseconds(PR_IntervalNow());
    if (nowMS < m_lastProgressTime + 250) return NS_OK;
  }

  m_lastProgressTime = nowMS;
  nsCOMPtr<nsIMsgStatusFeedback> jsStatusFeedback(
      do_QueryReferent(mJSStatusFeedbackWeak));
  if (jsStatusFeedback) jsStatusFeedback->ShowProgress(aPercentage);
  return NS_OK;
}

NS_IMETHODIMP
nsMsgStatusFeedback::StartMeteors() {
  nsCOMPtr<nsIMsgStatusFeedback> jsStatusFeedback(
      do_QueryReferent(mJSStatusFeedbackWeak));
  if (jsStatusFeedback) jsStatusFeedback->StartMeteors();
  return NS_OK;
}

NS_IMETHODIMP
nsMsgStatusFeedback::StopMeteors() {
  nsCOMPtr<nsIMsgStatusFeedback> jsStatusFeedback(
      do_QueryReferent(mJSStatusFeedbackWeak));
  if (jsStatusFeedback) jsStatusFeedback->StopMeteors();
  return NS_OK;
}

NS_IMETHODIMP nsMsgStatusFeedback::SetWrappedStatusFeedback(
    nsIMsgStatusFeedback* aJSStatusFeedback) {
  NS_ENSURE_ARG_POINTER(aJSStatusFeedback);
  mJSStatusFeedbackWeak = do_GetWeakReference(aJSStatusFeedback);
  return NS_OK;
}

NS_IMETHODIMP nsMsgStatusFeedback::OnProgress(nsIRequest* request,
                                              int64_t aProgress,
                                              int64_t aProgressMax) {
  // XXX: What should the nsIWebProgress be?
  // XXX: this truncates 64-bit to 32-bit
  return OnProgressChange(nullptr, request, int32_t(aProgress),
                          int32_t(aProgressMax),
                          int32_t(aProgress) /* current total progress */,
                          int32_t(aProgressMax) /* max total progress */);
}

NS_IMETHODIMP nsMsgStatusFeedback::OnStatus(nsIRequest* request,
                                            nsresult aStatus,
                                            const char16_t* aStatusArg) {
  nsresult rv;
  nsCOMPtr<nsIURI> uri;
  nsString accountName;
  // fetching account name from nsIRequest
  nsCOMPtr<nsIChannel> aChannel = do_QueryInterface(request);
  rv = aChannel->GetURI(getter_AddRefs(uri));
  NS_ENSURE_SUCCESS(rv, rv);
  nsCOMPtr<nsIMsgMailNewsUrl> url(do_QueryInterface(uri));
  if (url) {
    nsCOMPtr<nsIMsgIncomingServer> server;
    url->GetServer(getter_AddRefs(server));
    if (server) server->GetPrettyName(accountName);
  }

  // forming the status message
  nsCOMPtr<nsIStringBundleService> sbs =
      mozilla::components::StringBundle::Service();
  NS_ENSURE_TRUE(sbs, NS_ERROR_UNEXPECTED);
  nsString str;
  rv = sbs->FormatStatusMessage(aStatus, aStatusArg, str);
  NS_ENSURE_SUCCESS(rv, rv);

  // prefixing the account name to the status message if status message isn't
  // blank and doesn't already contain the account name.
  nsString statusMessage;
  if (!str.IsEmpty() && str.Find(accountName) == kNotFound) {
    nsCOMPtr<nsIStringBundle> bundle;
    rv = sbs->CreateBundle(MSGS_URL, getter_AddRefs(bundle));
    AutoTArray<nsString, 2> params = {accountName, str};
    rv = bundle->FormatStringFromName("statusMessage", params, statusMessage);
    NS_ENSURE_SUCCESS(rv, rv);
  } else {
    statusMessage.Assign(str);
  }
  return ShowStatusString(statusMessage);
}