/*
   Copyright (c) 2010 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.com>
   Author: Kevin Ottens <kevin@kdab.com>

   This program is free software; you can redistribute it and/or
   modify it under the terms of the GNU General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/

#include <qtest_kde.h>

#include "kimaptest/fakeserver.h"
#include "kimap/session.h"
#include "kimap/fetchjob.h"

#include <QTcpSocket>
#include <QtTest>
#include <KDebug>

Q_DECLARE_METATYPE( KIMAP::FetchJob::FetchScope )

class FetchJobTest: public QObject {
  Q_OBJECT

private:
  QStringList m_signals;

  QMap<qint64, qint64> m_uids;
  QMap<qint64, qint64> m_sizes;
  QMap<qint64, KIMAP::MessageFlags> m_flags;
  QMap<qint64, KIMAP::MessagePtr> m_messages;
  QMap<qint64, KIMAP::MessageParts> m_parts;
  QMap<qint64, KIMAP::MessageAttribute> m_attrs;

public Q_SLOTS:
void onHeadersReceived( const QString &/*mailBox*/,
                        const QMap<qint64, qint64> &uids,
                        const QMap<qint64, qint64> &sizes,
                        const QMap<qint64, KIMAP::MessageAttribute> &attrs,
                        const QMap<qint64, KIMAP::MessageFlags> &flags,
                        const QMap<qint64, KIMAP::MessagePtr> &messages )
  {
    m_signals << "headersReceived";
    m_uids.unite( uids );
    m_sizes.unite( sizes );
    m_flags.unite( flags );
    m_messages.unite( messages );
    m_attrs.unite( attrs );
  }

void onMessagesReceived( const QString &/*mailbox*/,
                         const QMap<qint64, qint64> uids,
                         const QMap<qint64, KIMAP::MessageAttribute> &attrs,
                         const QMap<qint64, KIMAP::MessagePtr> &messages )
{
  m_signals << "messagesReceived";
  m_uids.unite( uids );
  m_messages.unite( messages );
  m_attrs.unite( attrs );
}

void onPartsReceived( const QString &/*mailbox*/,
                      const QMap<qint64,qint64> &/*uids*/,
                      const QMap<qint64, KIMAP::MessageAttribute> &attrs,
                      const QMap<qint64, KIMAP::MessageParts> &parts)
{
  m_signals << "partsReceived";
  m_attrs.unite( attrs );
  m_parts.unite( parts );
}

private Q_SLOTS:

void testFetch_data() {
  qRegisterMetaType<KIMAP::FetchJob::FetchScope>();

  QTest::addColumn<bool>( "uidBased" );
  QTest::addColumn< KIMAP::ImapSet >( "set" );
  QTest::addColumn<int>( "expectedMessageCount" );
  QTest::addColumn< QList<QByteArray> >( "scenario" );
  QTest::addColumn<KIMAP::FetchJob::FetchScope>( "scope" );

  KIMAP::FetchJob::FetchScope scope;
  scope.mode = KIMAP::FetchJob::FetchScope::Flags;
  scope.changedSince = 123456789;

  QList<QByteArray> scenario;
  scenario << FakeServer::preauth()
           << "C: A000001 FETCH 1:4 (FLAGS UID) (CHANGEDSINCE 123456789)"
           << "S: * 1 FETCH ( FLAGS () UID 1 )"
           << "S: * 2 FETCH ( FLAGS () UID 2 )"
           << "S: * 3 FETCH ( FLAGS () UID 3 )"
           << "S: * 4 FETCH ( FLAGS () UID 4 )"
           << "S: A000001 OK fetch done";

  QTest::newRow( "messages have empty flags (with changedsince)" ) << false << KIMAP::ImapSet( 1, 4 ) << 4
                                               << scenario << scope;

  scenario.clear();
  scope.changedSince = 0;
  scenario << FakeServer::preauth()
           << "C: A000001 FETCH 1:4 (FLAGS UID)"
           << "S: * 1 FETCH ( FLAGS () UID 1 )"
           << "S: * 2 FETCH ( FLAGS () UID 2 )"
           << "S: * 3 FETCH ( FLAGS () UID 3 )"
           << "S: * 4 FETCH ( FLAGS () UID 4 )"
           << "S: A000001 OK fetch done";

  QTest::newRow( "messages have empty flags" ) << false << KIMAP::ImapSet( 1, 4 ) << 4
                                               << scenario << scope;

  scenario.clear();
  // kill the connection part-way through a list, with carriage returns at end
  // BUG 253619
  // this should fail, but it shouldn't crash
  scenario << FakeServer::preauth()
           << "C: A000001 FETCH 11 (RFC822.SIZE INTERNALDATE BODY.PEEK[HEADER.FIELDS (TO FROM MESSAGE-ID REFERENCES IN-REPLY-TO SUBJECT DATE)] FLAGS UID)"
           << "S: * 11 FETCH (RFC822.SIZE 770 INTERNALDATE \"11-Oct-2010 03:33:50 +0100\" BODY[HEADER.FIELDS (TO FROM MESSAGE-ID REFERENCES IN-REPLY-TO SUBJECT DATE)] {246}"
           << "S: From: John Smith <jonathanr.smith@foobarbaz.com>\r\nTo: \"amagicemailaddress@foobarbazbarfoo.com\"\r\n\t<amagicemailaddress@foobarbazbarfoo.com>\r\nDate: Mon, 11 Oct 2010 03:34:48 +0100\r\nSubject: unsubscribe\r\nMessage-ID: <ASDFFDSASDFFDS@foobarbaz.com>\r\n\r\n"
           << "X";
  scope.mode = KIMAP::FetchJob::FetchScope::Headers;
  QTest::newRow( "connection drop" ) << false << KIMAP::ImapSet( 11, 11 ) << 1 << scenario << scope;

  scenario.clear();
  // Important bit here if "([127.0.0.1])" which used to crash the stream parser
  scenario << FakeServer::preauth()
           << "C: A000001 FETCH 11 (RFC822.SIZE INTERNALDATE BODY.PEEK[HEADER.FIELDS (TO FROM MESSAGE-ID REFERENCES IN-REPLY-TO SUBJECT DATE)] FLAGS UID)"
           << "S: * 11 FETCH (RFC822.SIZE 770 INTERNALDATE \"11-Oct-2010 03:33:50 +0100\" BODY[HEADER.FIELDS (TO FROM MESSAGE-ID REFERENCES IN-REPLY-TO SUBJECT DATE)] {246}"
           << "S: ([127.0.0.1])\r\nDate: Mon, 11 Oct 2010 03:34:48 +0100\r\nSubject: unsubscribe\r\nMessage-ID: <ASDFFDSASDFFDS@foobarbaz.com>\r\n\r\n"
           << "X";
  scope.mode = KIMAP::FetchJob::FetchScope::Headers;
  QTest::newRow( "buffer overwrite" ) << false << KIMAP::ImapSet( 11, 11 ) << 1 << scenario << scope;

  scenario.clear();
  // We're assuming a buffer overwrite here which made us miss the opening parenthesis
  // for the properties list
  scenario << FakeServer::preauth()
           << "C: A000001 FETCH 11 (RFC822.SIZE INTERNALDATE BODY.PEEK[HEADER.FIELDS (TO FROM MESSAGE-ID REFERENCES IN-REPLY-TO SUBJECT DATE)] FLAGS UID)"
           << "S: * 11 FETCH {10}doh!\r\n\r\n\r\n)\r\n"
           << "X";
  scope.mode = KIMAP::FetchJob::FetchScope::Headers;
  QTest::newRow( "buffer overwrite 2" ) << false << KIMAP::ImapSet( 11, 11 ) << 1 << scenario << scope;

  scenario.clear();
  scenario << FakeServer::preauth()
           << "C: A000001 FETCH 11 (RFC822.SIZE INTERNALDATE BODY.PEEK[HEADER] FLAGS UID) (CHANGEDSINCE 123456789)"
           << "S: * 11 FETCH (UID 123 RFC822.SIZE 770 INTERNALDATE \"11-Oct-2010 03:33:50 +0100\" BODY[HEADER] {245}"
           << "S: From: John Smith <jonathanr.smith@foobarbaz.com>\r\nTo: \"amagicemailaddress@foobarbazbarfoo.com\"\r\n\t<amagicemailaddress@foobarbazbarfoo.com>\r\nDate: Mon, 11 Oct 2010 03:34:48 +0100\r\nSubject: unsubscribe\r\nMessage-ID: <ASDFFDSASDFFDS@foobarbaz.com>\r\n\r\n  FLAGS ())"
           << "S: A000001 OK fetch done";
  scope.mode = KIMAP::FetchJob::FetchScope::FullHeaders;
  scope.changedSince = 123456789;
  QTest::newRow( "fetch full headers" ) << false << KIMAP::ImapSet( 11, 11 ) << 1
                                        << scenario << scope;
}

void testFetch()
{
    QFETCH( bool, uidBased );
    QFETCH( KIMAP::ImapSet, set );
    QFETCH( int, expectedMessageCount );
    QFETCH( QList<QByteArray>, scenario );
    QFETCH( KIMAP::FetchJob::FetchScope, scope );

    FakeServer fakeServer;
    fakeServer.setScenario( scenario );
    fakeServer.startAndWait();

    KIMAP::Session session( "127.0.0.1", 5989 );

    KIMAP::FetchJob *job = new KIMAP::FetchJob( &session );
    job->setUidBased( uidBased );
    job->setSequenceSet( set );
    job->setScope( scope );

    connect( job, SIGNAL(headersReceived(QString,
                                         QMap<qint64,qint64>,
                                         QMap<qint64,qint64>,
                                         QMap<qint64,KIMAP::MessageAttribute>,
                                         QMap<qint64,KIMAP::MessageFlags>,
                                         QMap<qint64,KIMAP::MessagePtr>)),
             this, SLOT(onHeadersReceived(QString,
                                          QMap<qint64,qint64>,
                                          QMap<qint64,qint64>,
                                          QMap<qint64,KIMAP::MessageAttribute>,
                                          QMap<qint64,KIMAP::MessageFlags>,
                                          QMap<qint64,KIMAP::MessagePtr>)) );

    bool result = job->exec();
    QEXPECT_FAIL( "connection drop", "Expected failure on connection drop", Continue );
    QEXPECT_FAIL( "buffer overwrite", "Expected failure on confused list", Continue );
    QEXPECT_FAIL( "buffer overwrite 2", "Expected beginning of message missing", Continue );
    QVERIFY( result );
    if ( result ) {
      QVERIFY( m_signals.count() > 0 );
      QCOMPARE( m_uids.count(), expectedMessageCount );
    }

    QVERIFY( fakeServer.isAllScenarioDone() );
    fakeServer.quit();

    m_signals.clear();
    m_uids.clear();
    m_sizes.clear();
    m_flags.clear();
    m_messages.clear();
    m_parts.clear();
    m_attrs.clear();
}

void testFetchStructure()
{
  QList<QByteArray> scenario;
  scenario << FakeServer::preauth()
           << "C: A000001 FETCH 1:2 (BODYSTRUCTURE UID)"
           << "S: * 1 FETCH (UID 10 BODYSTRUCTURE (\"TEXT\" \"PLAIN\" (\"CHARSET\" \"ISO-8859-1\") NIL NIL \"7BIT\" 5 1 NIL NIL NIL))"
           << "S: * 2 FETCH (UID 20 BODYSTRUCTURE ((((\"TEXT\" \"PLAIN\" (\"CHARSET\" \"ISO-8859-1\") NIL NIL \"7BIT\" 72 4 NIL NIL NIL)(\"TEXT\" \"HTML\" (\"CHARSET\" \"ISO-8859-1\") NIL NIL \"QUOTED-PRINTABLE\" 281 5 NIL NIL NIL) \"ALTERNATIVE\" (\"BOUNDARY\" \"0001\") NIL NIL)(\"IMAGE\" \"GIF\" (\"NAME\" \"B56.gif\") \"<B56@goomoji.gmail>\" NIL \"BASE64\" 528 NIL NIL NIL) \"RELATED\" (\"BOUNDARY\" \"0002\") NIL NIL)(\"IMAGE\" \"JPEG\" (\"NAME\" \"photo.jpg\") NIL NIL \"BASE64\" 53338 NIL (\"ATTACHMENT\" (\"FILENAME\" \"photo.jpg\")) NIL) \"MIXED\" (\"BOUNDARY\" \"0003\") NIL NIL))"
           << "S: A000001 OK fetch done";

  KIMAP::FetchJob::FetchScope scope;
  scope.mode = KIMAP::FetchJob::FetchScope::Structure;

  FakeServer fakeServer;
  fakeServer.setScenario( scenario );
  fakeServer.startAndWait();

  KIMAP::Session session( "127.0.0.1", 5989 );

  KIMAP::FetchJob *job = new KIMAP::FetchJob( &session );
  job->setUidBased( false );
  job->setSequenceSet( KIMAP::ImapSet( 1, 2 ) );
  job->setScope( scope );

  connect( job, SIGNAL(messagesReceived(QString,
                                        QMap<qint64,qint64>,
                                        QMap<qint64,KIMAP::MessageAttribute>,
                                        QMap<qint64,KIMAP::MessagePtr>)),
           this, SLOT(onMessagesReceived(QString,
                                         QMap<qint64,qint64>,
                                         QMap<qint64,KIMAP::MessageAttribute>,
                                         QMap<qint64,KIMAP::MessagePtr>)) );

  bool result = job->exec();
  QVERIFY( result );
  QVERIFY( m_signals.count() > 0 );
  QCOMPARE( m_uids.count(), 2 );
  QCOMPARE( m_messages[1]->attachments().count(), 0 );
  QCOMPARE( m_messages[2]->attachments().count(), 3 );
  QCOMPARE( m_messages[2]->attachments().at( 2 )->contentDisposition()->filename(), QString( "photo.jpg" ) );

  fakeServer.quit();

  m_signals.clear();
  m_uids.clear();
  m_sizes.clear();
  m_flags.clear();
  m_messages.clear();
  m_parts.clear();
  m_attrs.clear();
}

void testFetchParts()
{
  QList<QByteArray> scenario;
  scenario << FakeServer::preauth()
           << "C: A000001 FETCH 2 (BODY.PEEK[HEADER.FIELDS (TO FROM MESSAGE-ID REFERENCES IN-REPLY-TO SUBJECT DATE)] BODY.PEEK[1.1.1.MIME] BODY.PEEK[1.1.1] FLAGS UID)"
           << "S: * 2 FETCH (UID 20 FLAGS (\\Seen) BODY[HEADER.FIELDS (TO FROM MESSAGE-ID REFERENCES IN-REPLY-TO SUBJECT DATE)] {154}\r\nFrom: Joe Smith <smith@example.com>\r\nDate: Wed, 2 Mar 2011 11:33:24 +0700\r\nMessage-ID: <1234@example.com>\r\nSubject: hello\r\nTo: Jane <jane@example.com>\r\n\r\n BODY[1.1.1] {28}\r\nHi Jane, nice to meet you!\r\n BODY[1.1.1.MIME] {48}\r\nContent-Type: text/plain; charset=ISO-8859-1\r\n\r\n)\r\n"
           << "S: A000001 OK fetch done";

  KIMAP::FetchJob::FetchScope scope;
  scope.mode = KIMAP::FetchJob::FetchScope::HeaderAndContent;
  scope.parts.clear();
  scope.parts.append( "1.1.1" );

  FakeServer fakeServer;
  fakeServer.setScenario( scenario );
  fakeServer.startAndWait();

  KIMAP::Session session( "127.0.0.1", 5989 );

  KIMAP::FetchJob *job = new KIMAP::FetchJob( &session );
  job->setUidBased( false );
  job->setSequenceSet( KIMAP::ImapSet( 2, 2 ) );
  job->setScope( scope );

  connect ( job, SIGNAL(headersReceived(QString,
                                        QMap<qint64,qint64>,
                                        QMap<qint64,qint64>,
                                        QMap<qint64,KIMAP::MessageAttribute>,
                                        QMap<qint64,KIMAP::MessageFlags>,
                                        QMap<qint64,KIMAP::MessagePtr>)),
            this, SLOT(onHeadersReceived(QString,
                                         QMap<qint64,qint64>,
                                         QMap<qint64,qint64>,
                                         QMap<qint64,KIMAP::MessageAttribute>,
                                         QMap<qint64,KIMAP::MessageFlags>,
                                         QMap<qint64,KIMAP::MessagePtr>)) );
  connect( job, SIGNAL(partsReceived(QString,
                                     QMap<qint64,qint64>,
                                     QMap<qint64,KIMAP::MessageAttribute>,
                                     QMap<qint64,KIMAP::MessageParts>)),
           this, SLOT(onPartsReceived(QString,
                                      QMap<qint64,qint64>,
                                      QMap<qint64,KIMAP::MessageAttribute>,
                                      QMap<qint64,KIMAP::MessageParts>)) );

  bool result = job->exec();

  QVERIFY( result );
  QVERIFY( m_signals.count() > 0 );
  QCOMPARE( m_uids.count(), 1 );
  QCOMPARE( m_parts.count(), 1 );
  QCOMPARE( m_attrs.count(), 0 );

  // Check that we received the message header
  QCOMPARE( m_messages[2]->messageID()->identifier(), QByteArray( "1234@example.com" ) );

  // Check that we recieved the flags
  QMap<qint64, KIMAP::MessageFlags> expectedFlags;
  expectedFlags.insert( 2, KIMAP::MessageFlags() << "\\Seen" );
  QCOMPARE( m_flags, expectedFlags );

  // Check that we didn't received the full message body, since we only requested a specific part
  QCOMPARE( m_messages[2]->decodedText().length(), 0 );
  QCOMPARE( m_messages[2]->attachments().count(), 0 );

  // Check that we received the part we requested
  QByteArray partId = m_parts[2].keys().first();
  QString text = m_parts[2].value( partId )->decodedText( true, true );
  QCOMPARE( partId, QByteArray( "1.1.1" ) );
  QCOMPARE( text, QString( "Hi Jane, nice to meet you!" ) ) ;

  fakeServer.quit();

  m_signals.clear();
  m_uids.clear();
  m_sizes.clear();
  m_flags.clear();
  m_messages.clear();
  m_parts.clear();
  m_attrs.clear();
}

};

QTEST_KDEMAIN_CORE( FetchJobTest )

#include "fetchjobtest.moc"
