/* -*- mia-c++  -*-
 *
 * This file is part of MIA - a toolbox for medical image analysis
 * Copyright (c) Leipzig, Madrid 1999-2017 Gert Wollny
 *
 * MIA 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 3 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 MIA; if not, see <http://www.gnu.org/licenses/>.
 *
 */

#include <cstdlib>

#include <boost/filesystem/convenience.hpp>
#include <boost/filesystem/path.hpp>
#include <boost/test/unit_test_suite.hpp>
#include <boost/test/unit_test.hpp>


#include <mia/core/msgstream.hh>
#include <mia/core/history.hh>
#include <mia/2d/vfio.hh>
#include <mia/core/filter.hh>

NS_MIA_USE
using namespace std;
using namespace boost::unit_test;
namespace bfs =::boost::filesystem;

const char revision[] = "FakeRevision";



static void check_save_load(const C2DIOVectorfield& vf, const C2DVFIOPluginHandler::Instance::Interface& vfio)
{
       const string format = vfio.get_name();
       const string tmp_name = string("vf2dtest") + string(".") + format;
       BOOST_REQUIRE(vfio.save(tmp_name.c_str(), vf));
       cvdebug() << format << "saved" << std::endl;
       std::shared_ptr<C2DIOVectorfield > reread(vfio.load(tmp_name.c_str()));
       BOOST_REQUIRE(reread.get());
       cvdebug() << vf.size() << " vs. " << reread->size() << "\n";
       BOOST_REQUIRE(vf.size() == reread->size());
       BOOST_REQUIRE(vf.get_size() == reread->get_size());

       for (C2DIOVectorfield::const_iterator iv = vf.begin(), ir = reread->begin();
            iv != vf.end();  ++iv, ++ir) {
              cvdebug() << *iv << " vs. " << *ir << "\n";
              BOOST_CHECK(*iv == *ir);
       }

       unlink(tmp_name.c_str());
       cvdebug() << tmp_name << " unlinked\n";
}

static void test_2dvfio_plugin_handler()
{
       const C2DVFIOPluginHandler::Instance& vfioh = C2DVFIOPluginHandler::instance();
       BOOST_CHECK(vfioh.size() == 1);
       BOOST_CHECK(vfioh.get_plugin_names() == "exr ");
}

static void test_2dvfio()
{
       const C2DVFIOPluginHandler::Instance& vfioh = C2DVFIOPluginHandler::instance();
       C2DIOVectorfield vf(C2DBounds(5, 6));

       for (C2DIOVectorfield::iterator i = vf.begin(); i != vf.end(); ++i)
#ifdef WIN32
              *i = C2DFVector((float)rand() / RAND_MAX, (float)rand() / RAND_MAX);

#else
              *i = C2DFVector(drand48(), drand48());
#endif

       for (C2DVFIOPluginHandler::Instance::const_iterator i = vfioh.begin();
            vfioh.end() != i; ++i)
              check_save_load(vf, *i->second);
}

static void handler_setup()
{
       std::list< bfs::path> searchpath;
       searchpath.push_back( bfs::path("2d") / bfs::path("io"));
       searchpath.push_back( bfs::path("io"));
       C2DVFIOPluginHandler::set_search_path(searchpath);
}

void add_2dvfio_tests(test_suite *test)
{
       handler_setup();
       //test->add( BOOST_TEST_CASE( &test_2dvfio_plugin_handler));
       test->add( BOOST_TEST_CASE( &test_2dvfio));
}

