/****************************************************************************
**
** Copyright (C) 2018 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** 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
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
**   * Redistributions of source code must retain the above copyright
**     notice, this list of conditions and the following disclaimer.
**   * Redistributions in binary form must reproduce the above copyright
**     notice, this list of conditions and the following disclaimer in
**     the documentation and/or other materials provided with the
**     distribution.
**   * Neither the name of The Qt Company Ltd nor the names of its
**     contributors may be used to endorse or promote products derived
**     from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QMINIMALHTTPSERVER_H
#define QMINIMALHTTPSERVER_H

#include <QObject>
#include <QMap>
#include <QDateTime>
#include <QMimeDatabase>
#include <QTcpServer>
#include <QTcpSocket>

class QMinimalHttpServer : public QObject
{
    Q_OBJECT
protected:
    QTcpServer tcpServer;
    QMap<QString, QByteArray> httpFiles;
    QMap<QString, QString> httpFileMimeTypes;
    int maxPostRequestContentLength = INT_MAX;

    void onNewTcpConnection();
    void onTcpDataReceived(QTcpSocket *socket);
    virtual void processTcpData(const QByteArray &data, QTcpSocket *socket);
    virtual bool processHttpGetRequest(QString urlUpper, QString &responseHead, QByteArray &responseBody);
    virtual int processHttpPostRequest(QString urlUpper, QByteArray &postBody, QString &responseHead, QByteArray &responseBody);
    virtual int processHttpSubscribeRequest(QString urlUpper, QStringList &requestLines, QString &responseHead, QByteArray &responseBody);
    virtual int processHttpUnsubscribeRequest(QString urlUpper, QStringList &requestLines, QString &responseHead, QByteArray &responseBody);

    static QString DateRfc7231(const QDateTime &date);
    static QString DateRfc7231();

public:
    explicit QMinimalHttpServer(QObject *parent = nullptr);
    virtual ~QMinimalHttpServer();
    Q_DISABLE_COPY(QMinimalHttpServer)

    void addFile(QString filename, QByteArray &data, QString mimetype = QString());
    void startListening(quint16 port = 0);
    void stopListening();
    bool isListening();
};

#endif // QMINIMALHTTPSERVER_H