/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
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** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
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****************************************************************************/
#ifndef BASELINESERVER_H
#define BASELINESERVER_H

#include <QStringList>
#include <QTcpServer>
#include <QThread>
#include <QTcpSocket>
#include <QScopedPointer>
#include <QTimer>
#include <QDateTime>
#include <QSettings>

#include "baselineprotocol.h"
#include "report.h"

// #seconds between checks for update of the executable
#define HEARTBEAT 10
// Timeout if no activity received from client, #seconds
#define IDLE_CLIENT_TIMEOUT 3*60

#define MetadataFileExt "metadata"
#define ThumbnailExt "thumbnail.jpg"


class BaselineServer : public QTcpServer
{
    Q_OBJECT

public:
    BaselineServer(QObject *parent = 0);

    static QString storagePath();
    static QString baseUrl();
    static QStringList defaultPathKeys();

protected:
    void incomingConnection(qintptr socketDescriptor);

private slots:
    void heartbeat();

private:
    QTimer *heartbeatTimer;
    QDateTime meLastMod;
    QString lastRunId;
    int lastRunIdIdx;
    static QString storage;
    static QString url;
    static QStringList pathKeys;
};


class BaselineThread : public QThread
{
    Q_OBJECT

public:
    BaselineThread(const QString &runId, int socketDescriptor, QObject *parent);
    void run();

private:
    QString runId;
    int socketDescriptor;
};


class BaselineHandler : public QObject
{
    Q_OBJECT

public:
    BaselineHandler(const QString &runId, int socketDescriptor = -1);
    QString projectPath(bool absolute = true) const;
    QString pathForItem(const ImageItem &item, bool isBaseline = true, bool absolute = true) const;

    // CGI callbacks:
    static QString view(const QString &baseline, const QString &rendered, const QString &compared);
    static QString diffstats(const QString &baseline, const QString &rendered);
    static QString clearAllBaselines(const QString &context);
    static QString updateBaselines(const QString &context, const QString &mismatchContext, const QString &itemFile);
    static QString blacklistTest(const QString &context, const QString &itemId, bool removeFromBlacklist = false);

    // for debugging
    void testPathMapping();

private slots:
    void receiveRequest();
    void receiveDisconnect();
    void idleClientTimeout();

private:
    bool checkClient(QByteArray *errMsg, bool *dryRunMode = 0);
    bool establishConnection();
    void provideBaselineChecksums(const QByteArray &itemListBlock);
    void recordMatch(const QByteArray &itemBlock);
    void storeImage(const QByteArray &itemBlock, bool isBaseline);
    void storeItemMetadata(const PlatformInfo &metadata, const QString &path);
    PlatformInfo fetchItemMetadata(const QString &path);
    PlatformInfo mapPlatformInfo(const PlatformInfo& orig) const;
    const char *logtime();
    void issueMismatchNotification();
    bool fuzzyCompare(const QString& baselinePath, const QString& mismatchPath);

    static QString computeMismatchScore(const QImage& baseline, const QImage& rendered);

    BaselineProtocol proto;
    PlatformInfo clientInfo;
    mutable PlatformInfo mappedClientInfo;
    mutable PlatformInfo overriddenMappedClientInfo;
    QString runId;
    bool connectionEstablished;
    Report report;
    QSettings *settings;
    QString ruleName;
    int fuzzLevel;
    QTimer *idleTimer;
};


// Make an identifer safer for use as filename and URL
QString safeName(const QString& name);

#endif // BASELINESERVER_H