/* -*- 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 "nsSpamSettings.h"
#include "nsIFile.h"
#include "plstr.h"
#include "prmem.h"
#include "nsIMsgHdr.h"
#include "nsNetUtil.h"
#include "nsIMsgFolder.h"
#include "nsMsgUtils.h"
#include "nsMsgFolderFlags.h"
#include "nsImapCore.h"
#include "nsIImapIncomingServer.h"
#include "nsAppDirectoryServiceDefs.h"
#include "nsIPrefService.h"
#include "nsIPrefBranch.h"
#include "nsIStringBundle.h"
#include "mozilla/Components.h"
#include "mozilla/mailnews/MimeHeaderParser.h"
#include "nsMailDirServiceDefs.h"
#include "nsDirectoryServiceUtils.h"
#include "nsDirectoryServiceDefs.h"
#include "nsISimpleEnumerator.h"
#include "nsIAbCard.h"
#include "nsIAbManager.h"
#include "nsIMsgAccountManager.h"
#include "mozilla/intl/AppDateTimeFormat.h"

using namespace mozilla::mailnews;

nsSpamSettings::nsSpamSettings() {
  mLevel = 0;
  mMoveOnSpam = false;
  mMoveTargetMode = nsISpamSettings::MOVE_TARGET_MODE_ACCOUNT;
  mPurge = false;
  mPurgeInterval = 14;  // 14 days

  mServerFilterTrustFlags = 0;
  mInhibitWhiteListingIdentityUser = false;
  mInhibitWhiteListingIdentityDomain = false;
  mUseWhiteList = false;
  mUseServerFilter = false;

  nsresult rv = NS_GetSpecialDirectory(NS_APP_USER_PROFILE_50_DIR,
                                       getter_AddRefs(mLogFile));
  if (NS_SUCCEEDED(rv)) mLogFile->Append(u"junklog.html"_ns);
}

nsSpamSettings::~nsSpamSettings() {}

NS_IMPL_ISUPPORTS(nsSpamSettings, nsISpamSettings, nsIUrlListener)

NS_IMETHODIMP
nsSpamSettings::GetLevel(int32_t* aLevel) {
  NS_ENSURE_ARG_POINTER(aLevel);
  *aLevel = mLevel;
  return NS_OK;
}

NS_IMETHODIMP nsSpamSettings::SetLevel(int32_t aLevel) {
  NS_ASSERTION((aLevel >= 0 && aLevel <= 100), "bad level");
  mLevel = aLevel;
  return NS_OK;
}

NS_IMETHODIMP
nsSpamSettings::GetMoveTargetMode(int32_t* aMoveTargetMode) {
  NS_ENSURE_ARG_POINTER(aMoveTargetMode);
  *aMoveTargetMode = mMoveTargetMode;
  return NS_OK;
}

NS_IMETHODIMP nsSpamSettings::SetMoveTargetMode(int32_t aMoveTargetMode) {
  NS_ASSERTION((aMoveTargetMode == nsISpamSettings::MOVE_TARGET_MODE_FOLDER ||
                aMoveTargetMode == nsISpamSettings::MOVE_TARGET_MODE_ACCOUNT),
               "bad move target mode");
  mMoveTargetMode = aMoveTargetMode;
  return NS_OK;
}

NS_IMETHODIMP nsSpamSettings::GetManualMark(bool* aManualMark) {
  NS_ENSURE_ARG_POINTER(aManualMark);
  nsresult rv;
  nsCOMPtr<nsIPrefBranch> prefBranch(
      do_GetService(NS_PREFSERVICE_CONTRACTID, &rv));
  NS_ENSURE_SUCCESS(rv, rv);
  return prefBranch->GetBoolPref("mail.spam.manualMark", aManualMark);
}

NS_IMETHODIMP nsSpamSettings::GetManualMarkMode(int32_t* aManualMarkMode) {
  NS_ENSURE_ARG_POINTER(aManualMarkMode);
  nsresult rv;
  nsCOMPtr<nsIPrefBranch> prefBranch(
      do_GetService(NS_PREFSERVICE_CONTRACTID, &rv));
  NS_ENSURE_SUCCESS(rv, rv);
  return prefBranch->GetIntPref("mail.spam.manualMarkMode", aManualMarkMode);
}

NS_IMETHODIMP nsSpamSettings::GetLoggingEnabled(bool* aLoggingEnabled) {
  NS_ENSURE_ARG_POINTER(aLoggingEnabled);
  nsresult rv;
  nsCOMPtr<nsIPrefBranch> prefBranch(
      do_GetService(NS_PREFSERVICE_CONTRACTID, &rv));
  NS_ENSURE_SUCCESS(rv, rv);
  return prefBranch->GetBoolPref("mail.spam.logging.enabled", aLoggingEnabled);
}

NS_IMETHODIMP nsSpamSettings::GetMarkAsReadOnSpam(bool* aMarkAsReadOnSpam) {
  NS_ENSURE_ARG_POINTER(aMarkAsReadOnSpam);
  nsresult rv;
  nsCOMPtr<nsIPrefBranch> prefBranch(
      do_GetService(NS_PREFSERVICE_CONTRACTID, &rv));
  NS_ENSURE_SUCCESS(rv, rv);
  return prefBranch->GetBoolPref("mail.spam.markAsReadOnSpam",
                                 aMarkAsReadOnSpam);
}

NS_IMPL_GETSET(nsSpamSettings, MoveOnSpam, bool, mMoveOnSpam)
NS_IMPL_GETSET(nsSpamSettings, Purge, bool, mPurge)
NS_IMPL_GETSET(nsSpamSettings, UseWhiteList, bool, mUseWhiteList)
NS_IMPL_GETSET(nsSpamSettings, UseServerFilter, bool, mUseServerFilter)

NS_IMETHODIMP nsSpamSettings::GetWhiteListAbURI(nsACString& aWhiteListAbURI) {
  aWhiteListAbURI = mWhiteListAbURI;
  return NS_OK;
}
NS_IMETHODIMP nsSpamSettings::SetWhiteListAbURI(
    const nsACString& aWhiteListAbURI) {
  mWhiteListAbURI = aWhiteListAbURI;
  return NS_OK;
}

NS_IMETHODIMP nsSpamSettings::GetActionTargetAccount(
    nsACString& aActionTargetAccount) {
  aActionTargetAccount = mActionTargetAccount;
  return NS_OK;
}

NS_IMETHODIMP nsSpamSettings::SetActionTargetAccount(
    const nsACString& aActionTargetAccount) {
  mActionTargetAccount = aActionTargetAccount;
  return NS_OK;
}

NS_IMETHODIMP nsSpamSettings::GetActionTargetFolder(
    nsACString& aActionTargetFolder) {
  aActionTargetFolder = mActionTargetFolder;
  return NS_OK;
}

NS_IMETHODIMP nsSpamSettings::SetActionTargetFolder(
    const nsACString& aActionTargetFolder) {
  mActionTargetFolder = aActionTargetFolder;
  return NS_OK;
}

NS_IMETHODIMP nsSpamSettings::GetPurgeInterval(int32_t* aPurgeInterval) {
  NS_ENSURE_ARG_POINTER(aPurgeInterval);
  *aPurgeInterval = mPurgeInterval;
  return NS_OK;
}

NS_IMETHODIMP nsSpamSettings::SetPurgeInterval(int32_t aPurgeInterval) {
  NS_ASSERTION(aPurgeInterval >= 0, "bad purge interval");
  mPurgeInterval = aPurgeInterval;
  return NS_OK;
}

NS_IMETHODIMP
nsSpamSettings::SetLogStream(nsIOutputStream* aLogStream) {
  // if there is a log stream already, close it
  if (mLogStream) {
    // will flush
    nsresult rv = mLogStream->Close();
    NS_ENSURE_SUCCESS(rv, rv);
  }

  mLogStream = aLogStream;
  return NS_OK;
}

#define LOG_HEADER                                                     \
  "<!DOCTYPE html>\n<html>\n<head>\n<meta charset=\"UTF-8\">\n<style " \
  "type=\"text/css\">body{font-family:Consolas,\"Lucida "              \
  "Console\",Monaco,\"Courier "                                        \
  "New\",Courier,monospace;font-size:small}</style>\n</head>\n<body>\n"
#define LOG_HEADER_LEN (strlen(LOG_HEADER))

NS_IMETHODIMP
nsSpamSettings::GetLogStream(nsIOutputStream** aLogStream) {
  NS_ENSURE_ARG_POINTER(aLogStream);

  nsresult rv;

  if (!mLogStream) {
    // append to the end of the log file
    rv = MsgNewBufferedFileOutputStream(getter_AddRefs(mLogStream), mLogFile,
                                        PR_CREATE_FILE | PR_WRONLY | PR_APPEND,
                                        0600);
    NS_ENSURE_SUCCESS(rv, rv);

    int64_t fileSize;
    rv = mLogFile->GetFileSize(&fileSize);
    NS_ENSURE_SUCCESS(rv, rv);

    // write the header at the start
    if (fileSize == 0) {
      uint32_t writeCount;

      rv = mLogStream->Write(LOG_HEADER, LOG_HEADER_LEN, &writeCount);
      NS_ENSURE_SUCCESS(rv, rv);
      NS_ASSERTION(writeCount == LOG_HEADER_LEN,
                   "failed to write out log header");
    }
  }

  NS_ADDREF(*aLogStream = mLogStream);
  return NS_OK;
}

NS_IMETHODIMP nsSpamSettings::Initialize(nsIMsgIncomingServer* aServer) {
  NS_ENSURE_ARG_POINTER(aServer);
  nsresult rv;
  int32_t spamLevel;
  rv = aServer->GetIntValue("spamLevel", &spamLevel);
  NS_ENSURE_SUCCESS(rv, rv);
  rv = SetLevel(spamLevel);
  NS_ENSURE_SUCCESS(rv, rv);

  bool moveOnSpam;
  rv = aServer->GetBoolValue("moveOnSpam", &moveOnSpam);
  NS_ENSURE_SUCCESS(rv, rv);
  rv = SetMoveOnSpam(moveOnSpam);
  NS_ENSURE_SUCCESS(rv, rv);

  int32_t moveTargetMode;
  rv = aServer->GetIntValue("moveTargetMode", &moveTargetMode);
  NS_ENSURE_SUCCESS(rv, rv);
  rv = SetMoveTargetMode(moveTargetMode);
  NS_ENSURE_SUCCESS(rv, rv);

  nsCString spamActionTargetAccount;
  rv =
      aServer->GetCharValue("spamActionTargetAccount", spamActionTargetAccount);
  NS_ENSURE_SUCCESS(rv, rv);
  rv = SetActionTargetAccount(spamActionTargetAccount);
  NS_ENSURE_SUCCESS(rv, rv);

  nsString spamActionTargetFolder;
  rv = aServer->GetUnicharValue("spamActionTargetFolder",
                                spamActionTargetFolder);
  NS_ENSURE_SUCCESS(rv, rv);
  rv = SetActionTargetFolder(NS_ConvertUTF16toUTF8(spamActionTargetFolder));
  NS_ENSURE_SUCCESS(rv, rv);

  bool useWhiteList;
  rv = aServer->GetBoolValue("useWhiteList", &useWhiteList);
  NS_ENSURE_SUCCESS(rv, rv);
  rv = SetUseWhiteList(useWhiteList);
  NS_ENSURE_SUCCESS(rv, rv);

  nsCString whiteListAbURI;
  rv = aServer->GetCharValue("whiteListAbURI", whiteListAbURI);
  NS_ENSURE_SUCCESS(rv, rv);
  rv = SetWhiteListAbURI(whiteListAbURI);
  NS_ENSURE_SUCCESS(rv, rv);

  bool purgeSpam;
  rv = aServer->GetBoolValue("purgeSpam", &purgeSpam);
  NS_ENSURE_SUCCESS(rv, rv);
  rv = SetPurge(purgeSpam);
  NS_ENSURE_SUCCESS(rv, rv);

  int32_t purgeSpamInterval;
  rv = aServer->GetIntValue("purgeSpamInterval", &purgeSpamInterval);
  NS_ENSURE_SUCCESS(rv, rv);
  rv = SetPurgeInterval(purgeSpamInterval);
  NS_ENSURE_SUCCESS(rv, rv);

  bool useServerFilter;
  rv = aServer->GetBoolValue("useServerFilter", &useServerFilter);
  NS_ENSURE_SUCCESS(rv, rv);
  rv = SetUseServerFilter(useServerFilter);
  NS_ENSURE_SUCCESS(rv, rv);

  nsCString serverFilterName;
  rv = aServer->GetCharValue("serverFilterName", serverFilterName);
  if (NS_SUCCEEDED(rv)) SetServerFilterName(serverFilterName);
  int32_t serverFilterTrustFlags = 0;
  rv = aServer->GetIntValue("serverFilterTrustFlags", &serverFilterTrustFlags);
  NS_ENSURE_SUCCESS(rv, rv);
  rv = SetServerFilterTrustFlags(serverFilterTrustFlags);
  NS_ENSURE_SUCCESS(rv, rv);

  nsCOMPtr<nsIPrefBranch> prefBranch(
      do_GetService(NS_PREFSERVICE_CONTRACTID, &rv));
  if (prefBranch)
    prefBranch->GetCharPref("mail.trusteddomains", mTrustedMailDomains);

  mWhiteListDirArray.Clear();
  if (!mWhiteListAbURI.IsEmpty()) {
    nsCOMPtr<nsIAbManager> abManager(
        do_GetService("@mozilla.org/abmanager;1", &rv));
    NS_ENSURE_SUCCESS(rv, rv);

    nsTArray<nsCString> whiteListArray;
    ParseString(mWhiteListAbURI, ' ', whiteListArray);

    for (uint32_t index = 0; index < whiteListArray.Length(); index++) {
      nsCOMPtr<nsIAbDirectory> directory;
      rv = abManager->GetDirectory(whiteListArray[index],
                                   getter_AddRefs(directory));
      NS_ENSURE_SUCCESS(rv, rv);

      if (directory) mWhiteListDirArray.AppendObject(directory);
    }
  }

  // the next two preferences affect whether we try to whitelist our own
  // address or domain. Spammers send emails with spoofed from address matching
  // either the email address of the recipient, or the recipient's domain,
  // hoping to get whitelisted.
  //
  // The terms to describe this get wrapped up in chains of negatives. A full
  // definition of the boolean inhibitWhiteListingIdentityUser is "Suppress
  // address book whitelisting if the sender matches an identity's email
  // address"

  rv = aServer->GetBoolValue("inhibitWhiteListingIdentityUser",
                             &mInhibitWhiteListingIdentityUser);
  NS_ENSURE_SUCCESS(rv, rv);
  rv = aServer->GetBoolValue("inhibitWhiteListingIdentityDomain",
                             &mInhibitWhiteListingIdentityDomain);
  NS_ENSURE_SUCCESS(rv, rv);

  // collect lists of identity users if needed
  if (mInhibitWhiteListingIdentityDomain || mInhibitWhiteListingIdentityUser) {
    nsCOMPtr<nsIMsgAccountManager> accountManager(
        do_GetService("@mozilla.org/messenger/account-manager;1", &rv));
    NS_ENSURE_SUCCESS(rv, rv);

    nsCOMPtr<nsIMsgAccount> account;
    rv = accountManager->FindAccountForServer(aServer, getter_AddRefs(account));
    NS_ENSURE_SUCCESS(rv, rv);

    nsAutoCString accountKey;
    if (account) account->GetKey(accountKey);

    // Loop through all accounts, adding emails from this account, as well as
    // from any accounts that defer to this account.
    mEmails.Clear();
    nsTArray<RefPtr<nsIMsgAccount>> accounts;
    // No sense scanning accounts if we've nothing to match.
    if (account) {
      rv = accountManager->GetAccounts(accounts);
      NS_ENSURE_SUCCESS(rv, rv);
    }

    for (auto loopAccount : accounts) {
      if (!loopAccount) continue;
      nsAutoCString loopAccountKey;
      loopAccount->GetKey(loopAccountKey);
      nsCOMPtr<nsIMsgIncomingServer> loopServer;
      loopAccount->GetIncomingServer(getter_AddRefs(loopServer));
      nsAutoCString deferredToAccountKey;
      if (loopServer)
        loopServer->GetCharValue("deferred_to_account", deferredToAccountKey);

      // Add the emails for any account that defers to this one, or for the
      // account itself.
      if (accountKey.Equals(deferredToAccountKey) ||
          accountKey.Equals(loopAccountKey)) {
        nsTArray<RefPtr<nsIMsgIdentity>> identities;
        loopAccount->GetIdentities(identities);
        for (auto identity : identities) {
          nsAutoCString email;
          identity->GetEmail(email);
          if (!email.IsEmpty()) mEmails.AppendElement(email);
        }
      }
    }
  }

  return UpdateJunkFolderState();
}

nsresult nsSpamSettings::UpdateJunkFolderState() {
  nsresult rv;

  // if the spam folder uri changed on us, we need to unset the junk flag
  // on the old spam folder
  nsCString newJunkFolderURI;
  rv = GetSpamFolderURI(newJunkFolderURI);
  NS_ENSURE_SUCCESS(rv, rv);

  if (!mCurrentJunkFolderURI.IsEmpty() &&
      !mCurrentJunkFolderURI.Equals(newJunkFolderURI)) {
    nsCOMPtr<nsIMsgFolder> oldJunkFolder;
    rv = FindFolder(mCurrentJunkFolderURI, getter_AddRefs(oldJunkFolder));
    NS_ENSURE_SUCCESS(rv, rv);
    if (oldJunkFolder) {
      // remove the nsMsgFolderFlags::Junk on the old junk folder
      // XXX TODO
      // JUNK MAIL RELATED
      // (in ClearFlag?) we need to make sure that this folder
      // is not the junk folder for another account
      // the same goes for set flag.  have fun with all that.
      oldJunkFolder->ClearFlag(nsMsgFolderFlags::Junk);
    }
  }

  mCurrentJunkFolderURI = newJunkFolderURI;

  // only try to create the junk folder if we are moving junk
  // and we have a non-empty uri
  if (mMoveOnSpam && !mCurrentJunkFolderURI.IsEmpty()) {
    // as the url listener, the spam settings will set the
    // nsMsgFolderFlags::Junk folder flag on the junk mail folder, after it is
    // created
    rv = GetOrCreateJunkFolder(mCurrentJunkFolderURI, this);
  }

  return rv;
}

NS_IMETHODIMP nsSpamSettings::Clone(nsISpamSettings* aSpamSettings) {
  NS_ENSURE_ARG_POINTER(aSpamSettings);

  nsresult rv = aSpamSettings->GetUseWhiteList(&mUseWhiteList);
  NS_ENSURE_SUCCESS(rv, rv);

  (void)aSpamSettings->GetMoveOnSpam(&mMoveOnSpam);
  (void)aSpamSettings->GetPurge(&mPurge);
  (void)aSpamSettings->GetUseServerFilter(&mUseServerFilter);

  rv = aSpamSettings->GetPurgeInterval(&mPurgeInterval);
  NS_ENSURE_SUCCESS(rv, rv);

  rv = aSpamSettings->GetLevel(&mLevel);
  NS_ENSURE_SUCCESS(rv, rv);

  rv = aSpamSettings->GetMoveTargetMode(&mMoveTargetMode);
  NS_ENSURE_SUCCESS(rv, rv);

  nsCString actionTargetAccount;
  rv = aSpamSettings->GetActionTargetAccount(actionTargetAccount);
  NS_ENSURE_SUCCESS(rv, rv);
  mActionTargetAccount = actionTargetAccount;

  nsCString actionTargetFolder;
  rv = aSpamSettings->GetActionTargetFolder(actionTargetFolder);
  NS_ENSURE_SUCCESS(rv, rv);
  mActionTargetFolder = actionTargetFolder;

  nsCString whiteListAbURI;
  rv = aSpamSettings->GetWhiteListAbURI(whiteListAbURI);
  NS_ENSURE_SUCCESS(rv, rv);
  mWhiteListAbURI = whiteListAbURI;

  aSpamSettings->GetServerFilterName(mServerFilterName);
  aSpamSettings->GetServerFilterTrustFlags(&mServerFilterTrustFlags);

  return rv;
}

NS_IMETHODIMP nsSpamSettings::GetSpamFolderURI(nsACString& aSpamFolderURI) {
  if (mMoveTargetMode == nsISpamSettings::MOVE_TARGET_MODE_FOLDER)
    return GetActionTargetFolder(aSpamFolderURI);

  // if the mode is nsISpamSettings::MOVE_TARGET_MODE_ACCOUNT
  // the spam folder URI = account uri + "/Junk"
  nsCString folderURI;
  nsresult rv = GetActionTargetAccount(folderURI);
  NS_ENSURE_SUCCESS(rv, rv);

  // we might be trying to get the old spam folder uri
  // in order to clear the flag
  // if we didn't have one, bail out.
  if (folderURI.IsEmpty()) return NS_OK;

  nsCOMPtr<nsIMsgFolder> folder;
  rv = GetOrCreateFolder(folderURI, getter_AddRefs(folder));
  NS_ENSURE_SUCCESS(rv, rv);

  nsCOMPtr<nsIMsgIncomingServer> server;
  rv = folder->GetServer(getter_AddRefs(server));
  NS_ENSURE_SUCCESS(rv, rv);

  // see nsMsgFolder::SetPrettyName() for where the pretty name is set.

  // Check for an existing junk folder - this will do a case-insensitive
  // search by URI - if we find a junk folder, use its URI.
  nsCOMPtr<nsIMsgFolder> junkFolder;
  folderURI.AppendLiteral("/Junk");
  if (NS_SUCCEEDED(server->GetMsgFolderFromURI(nullptr, folderURI,
                                               getter_AddRefs(junkFolder))) &&
      junkFolder)
    junkFolder->GetURI(folderURI);

  // XXX todo
  // better not to make base depend in imap
  // but doing it here, like in nsMsgCopy.cpp
  // one day, we'll fix this (and nsMsgCopy.cpp) to use GetMsgFolderFromURI()
  nsCOMPtr<nsIImapIncomingServer> imapServer = do_QueryInterface(server);
  if (imapServer) {
    // Make sure an specific IMAP folder has correct personal namespace
    // see bug #197043
    nsCString folderUriWithNamespace;
    (void)imapServer->GetUriWithNamespacePrefixIfNecessary(
        kPersonalNamespace, folderURI, folderUriWithNamespace);
    if (!folderUriWithNamespace.IsEmpty()) folderURI = folderUriWithNamespace;
  }

  aSpamFolderURI = folderURI;
  return NS_OK;
}

NS_IMETHODIMP nsSpamSettings::GetServerFilterName(nsACString& aFilterName) {
  aFilterName = mServerFilterName;
  return NS_OK;
}

NS_IMETHODIMP nsSpamSettings::SetServerFilterName(
    const nsACString& aFilterName) {
  mServerFilterName = aFilterName;
  mServerFilterFile = nullptr;  // clear out our stored location value
  return NS_OK;
}

NS_IMETHODIMP nsSpamSettings::GetServerFilterFile(nsIFile** aFile) {
  NS_ENSURE_ARG_POINTER(aFile);
  if (!mServerFilterFile) {
    nsresult rv;
    nsAutoCString serverFilterFileName;
    GetServerFilterName(serverFilterFileName);
    serverFilterFileName.AppendLiteral(".sfd");

    nsCOMPtr<nsIProperties> dirSvc =
        do_GetService(NS_DIRECTORY_SERVICE_CONTRACTID, &rv);
    NS_ENSURE_SUCCESS(rv, rv);

    // Walk through the list of isp directories
    nsCOMPtr<nsISimpleEnumerator> ispDirectories;
    rv = dirSvc->Get(ISP_DIRECTORY_LIST, NS_GET_IID(nsISimpleEnumerator),
                     getter_AddRefs(ispDirectories));
    NS_ENSURE_SUCCESS(rv, rv);

    bool hasMore;
    nsCOMPtr<nsIFile> file;
    while (NS_SUCCEEDED(ispDirectories->HasMoreElements(&hasMore)) && hasMore) {
      nsCOMPtr<nsISupports> elem;
      ispDirectories->GetNext(getter_AddRefs(elem));
      file = do_QueryInterface(elem);

      if (file) {
        // append our desired leaf name then test to see if the file exists. If
        // it does, we've found mServerFilterFile.
        file->AppendNative(serverFilterFileName);
        bool exists;
        if (NS_SUCCEEDED(file->Exists(&exists)) && exists) {
          file.swap(mServerFilterFile);
          break;
        }
      }  // if file
    }    // until we find the location of mServerFilterName
  }      // if we haven't already stored mServerFilterFile

  NS_IF_ADDREF(*aFile = mServerFilterFile);
  return NS_OK;
}

NS_IMPL_GETSET(nsSpamSettings, ServerFilterTrustFlags, int32_t,
               mServerFilterTrustFlags)

#define LOG_ENTRY_START_TAG "<p>\n"
#define LOG_ENTRY_START_TAG_LEN (strlen(LOG_ENTRY_START_TAG))
#define LOG_ENTRY_END_TAG "</p>\n"
#define LOG_ENTRY_END_TAG_LEN (strlen(LOG_ENTRY_END_TAG))
// Does this need to be localizable?
#define LOG_ENTRY_TIMESTAMP "[$S] "

NS_IMETHODIMP nsSpamSettings::LogJunkHit(nsIMsgDBHdr* aMsgHdr,
                                         bool aMoveMessage) {
  bool loggingEnabled;
  nsresult rv = GetLoggingEnabled(&loggingEnabled);
  NS_ENSURE_SUCCESS(rv, rv);

  if (!loggingEnabled) return NS_OK;

  PRTime date;

  nsString authorValue;
  nsString subjectValue;
  nsString dateValue;

  (void)aMsgHdr->GetDate(&date);
  PRExplodedTime exploded;
  PR_ExplodeTime(date, PR_LocalTimeParameters, &exploded);

  mozilla::intl::DateTimeFormat::StyleBag style;
  style.date = mozilla::Some(mozilla::intl::DateTimeFormat::Style::Short);
  style.time = mozilla::Some(mozilla::intl::DateTimeFormat::Style::Long);
  mozilla::intl::AppDateTimeFormat::Format(style, &exploded, dateValue);

  (void)aMsgHdr->GetMime2DecodedAuthor(authorValue);
  (void)aMsgHdr->GetMime2DecodedSubject(subjectValue);

  nsCString buffer;
  // this is big enough to hold a log entry.
  // do this so we avoid growing and copying as we append to the log.
  buffer.SetCapacity(512);

  nsCOMPtr<nsIStringBundleService> bundleService =
      mozilla::components::StringBundle::Service();
  NS_ENSURE_TRUE(bundleService, NS_ERROR_UNEXPECTED);

  nsCOMPtr<nsIStringBundle> bundle;
  rv = bundleService->CreateBundle(
      "chrome://messenger/locale/filter.properties", getter_AddRefs(bundle));
  NS_ENSURE_SUCCESS(rv, rv);

  AutoTArray<nsString, 3> junkLogDetectFormatStrings = {
      authorValue, subjectValue, dateValue};
  nsString junkLogDetectStr;
  rv = bundle->FormatStringFromName(
      "junkLogDetectStr", junkLogDetectFormatStrings, junkLogDetectStr);
  NS_ENSURE_SUCCESS(rv, rv);

  buffer += NS_ConvertUTF16toUTF8(junkLogDetectStr);
  buffer += "\n";

  if (aMoveMessage) {
    nsCString msgId;
    aMsgHdr->GetMessageId(getter_Copies(msgId));

    nsCString junkFolderURI;
    rv = GetSpamFolderURI(junkFolderURI);
    NS_ENSURE_SUCCESS(rv, rv);

    AutoTArray<nsString, 2> logMoveFormatStrings;
    CopyASCIItoUTF16(msgId, *logMoveFormatStrings.AppendElement());
    CopyASCIItoUTF16(junkFolderURI, *logMoveFormatStrings.AppendElement());
    nsString logMoveStr;
    rv = bundle->FormatStringFromName("logMoveStr", logMoveFormatStrings,
                                      logMoveStr);
    NS_ENSURE_SUCCESS(rv, rv);

    buffer += NS_ConvertUTF16toUTF8(logMoveStr);
    buffer += "\n";
  }

  return LogJunkString(buffer.get());
}

NS_IMETHODIMP nsSpamSettings::LogJunkString(const char* string) {
  bool loggingEnabled;
  nsresult rv = GetLoggingEnabled(&loggingEnabled);
  NS_ENSURE_SUCCESS(rv, rv);

  if (!loggingEnabled) return NS_OK;

  nsString dateValue;
  PRExplodedTime exploded;
  PR_ExplodeTime(PR_Now(), PR_LocalTimeParameters, &exploded);

  mozilla::intl::DateTimeFormat::StyleBag style;
  style.date = mozilla::Some(mozilla::intl::DateTimeFormat::Style::Short);
  style.time = mozilla::Some(mozilla::intl::DateTimeFormat::Style::Long);
  mozilla::intl::AppDateTimeFormat::Format(style, &exploded, dateValue);

  nsCString timestampString(LOG_ENTRY_TIMESTAMP);
  timestampString.ReplaceSubstring("$S",
                                   NS_ConvertUTF16toUTF8(dateValue).get());

  nsCOMPtr<nsIOutputStream> logStream;
  rv = GetLogStream(getter_AddRefs(logStream));
  NS_ENSURE_SUCCESS(rv, rv);

  uint32_t writeCount;

  rv = logStream->Write(LOG_ENTRY_START_TAG, LOG_ENTRY_START_TAG_LEN,
                        &writeCount);
  NS_ENSURE_SUCCESS(rv, rv);
  NS_ASSERTION(writeCount == LOG_ENTRY_START_TAG_LEN,
               "failed to write out start log tag");

  rv = logStream->Write(timestampString.get(), timestampString.Length(),
                        &writeCount);
  NS_ENSURE_SUCCESS(rv, rv);
  NS_ASSERTION(writeCount == timestampString.Length(),
               "failed to write out timestamp");

  // HTML-escape the log for security reasons.
  // We don't want someone to send us a message with a subject with
  // HTML tags, especially <script>.
  nsCString escapedBuffer;
  nsAppendEscapedHTML(nsDependentCString(string), escapedBuffer);

  uint32_t escapedBufferLen = escapedBuffer.Length();
  rv = logStream->Write(escapedBuffer.get(), escapedBufferLen, &writeCount);
  NS_ENSURE_SUCCESS(rv, rv);
  NS_ASSERTION(writeCount == escapedBufferLen, "failed to write out log hit");

  rv = logStream->Write(LOG_ENTRY_END_TAG, LOG_ENTRY_END_TAG_LEN, &writeCount);
  NS_ENSURE_SUCCESS(rv, rv);
  NS_ASSERTION(writeCount == LOG_ENTRY_END_TAG_LEN,
               "failed to write out end log tag");
  return NS_OK;
}

NS_IMETHODIMP nsSpamSettings::OnStartRunningUrl(nsIURI* aURL) {
  // do nothing
  // all the action happens in OnStopRunningUrl()
  return NS_OK;
}

NS_IMETHODIMP nsSpamSettings::OnStopRunningUrl(nsIURI* aURL,
                                               nsresult exitCode) {
  nsCString junkFolderURI;
  nsresult rv = GetSpamFolderURI(junkFolderURI);
  NS_ENSURE_SUCCESS(rv, rv);

  if (junkFolderURI.IsEmpty()) return NS_ERROR_UNEXPECTED;

  // when we get here, the folder should exist.
  nsCOMPtr<nsIMsgFolder> junkFolder;
  rv = GetExistingFolder(junkFolderURI, getter_AddRefs(junkFolder));
  NS_ENSURE_SUCCESS(rv, rv);

  rv = junkFolder->SetFlag(nsMsgFolderFlags::Junk);
  NS_ENSURE_SUCCESS(rv, rv);
  return rv;
}

NS_IMETHODIMP nsSpamSettings::CheckWhiteList(nsIMsgDBHdr* aMsgHdr,
                                             bool* aResult) {
  NS_ENSURE_ARG_POINTER(aMsgHdr);
  NS_ENSURE_ARG_POINTER(aResult);
  *aResult = false;  // default in case of error or no whitelisting

  if (!mUseWhiteList ||
      (!mWhiteListDirArray.Count() && mTrustedMailDomains.IsEmpty()))
    return NS_OK;

  // do per-message processing

  nsCString author;
  aMsgHdr->GetAuthor(getter_Copies(author));

  nsAutoCString authorEmailAddress;
  ExtractEmail(EncodedHeader(author), authorEmailAddress);

  if (authorEmailAddress.IsEmpty()) return NS_OK;

  // should we skip whitelisting for the identity email?
  if (mInhibitWhiteListingIdentityUser) {
    for (uint32_t i = 0; i < mEmails.Length(); ++i) {
      if (mEmails[i].Equals(authorEmailAddress,
                            nsCaseInsensitiveCStringComparator))
        return NS_OK;
    }
  }

  if (!mTrustedMailDomains.IsEmpty() || mInhibitWhiteListingIdentityDomain) {
    nsAutoCString domain;
    int32_t atPos = authorEmailAddress.FindChar('@');
    if (atPos >= 0) domain = Substring(authorEmailAddress, atPos + 1);
    if (!domain.IsEmpty()) {
      if (!mTrustedMailDomains.IsEmpty() &&
          MsgHostDomainIsTrusted(domain, mTrustedMailDomains)) {
        *aResult = true;
        return NS_OK;
      }

      if (mInhibitWhiteListingIdentityDomain) {
        for (uint32_t i = 0; i < mEmails.Length(); ++i) {
          nsAutoCString identityDomain;
          int32_t atPos = mEmails[i].FindChar('@');
          if (atPos >= 0) {
            identityDomain = Substring(mEmails[i], atPos + 1);
            if (identityDomain.Equals(domain,
                                      nsCaseInsensitiveCStringComparator))
              return NS_OK;  // don't whitelist
          }
        }
      }
    }
  }

  if (mWhiteListDirArray.Count()) {
    nsCOMPtr<nsIAbCard> cardForAddress;
    for (int32_t index = 0;
         index < mWhiteListDirArray.Count() && !cardForAddress; index++) {
      mWhiteListDirArray[index]->CardForEmailAddress(
          authorEmailAddress, getter_AddRefs(cardForAddress));
    }
    if (cardForAddress) {
      *aResult = true;
      return NS_OK;
    }
  }
  return NS_OK;  // default return is false
}