/******************************************************************************
* Copyright (c) 2014, Howard Butler, howard@hobu.co
*
* All rights reserved.
*
* 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 Hobu, Inc. or Flaxen Geo Consulting 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.
****************************************************************************/

#pragma once

#include <pdal/DbReader.hpp>
#include <pdal/StageFactory.hpp>
#include <pdal/XMLSchema.hpp>

#include "SQLiteCommon.hpp"

#include <vector>

namespace pdal
{

class PDAL_DLL SQLiteReader : public DbReader
{
public:
    SQLiteReader()
    {}

    std::string getName() const;

    SpatialReference fetchSpatialReference(std::string const& query) const;
    SQLite& getSession()
        { return *m_session.get(); }

private:
    std::unique_ptr<SQLite> m_session;
    std::string m_query;
    std::string m_schemaFile;
    std::string m_connection;
    std::string m_modulename;
    SpatialReference m_spatialRef;
    PatchPtr m_patch;

    bool m_at_end;
    bool b_doneQuery;

    virtual void initialize();
    virtual void addArgs(ProgramArgs& args);
    virtual void addDimensions(PointLayoutPtr layout);
    virtual void ready(PointTableRef table);
    point_count_t read(PointViewPtr view, point_count_t count);
    bool eof()
        { return m_at_end; }

    void validateQuery() const;
    point_count_t readPatch(PointViewPtr view, point_count_t count);
    bool nextBuffer();

    SQLiteReader& operator=(const SQLiteReader&); // not implemented
    SQLiteReader(const SQLiteReader&); // not implemented
};

} // namespace pdal
