// ==========================================================================
//                 SeqAn - The Library for Sequence Analysis
// ==========================================================================
// Copyright (c) 2006-2026, Knut Reinert, FU Berlin
// 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 Knut Reinert or the FU Berlin 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
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// ARE DISCLAIMED. IN NO EVENT SHALL KNUT REINERT OR THE FU BERLIN BE LIABLE
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// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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// 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.
//
// ==========================================================================
// Author: Manuel Holtgrewe <manuel.holtgrewe@fu-berlin.de>
// ==========================================================================

#include <sstream>

#include <seqan/basic.h>
#include <seqan/stream.h>

#include <seqan/simple_intervals_io.h>

SEQAN_DEFINE_TEST(test_simple_intervals_io_read_records)
{
    // Input file contents and input iterator.
    std::string input = "chr1:2489281-2489282\n"
                        "chr4:2489841\n";
    typename seqan2::DirectionIterator<std::string, seqan2::Input>::Type it =
        directionIterator(input, seqan2::Input());

    // Buffers and record.
    seqan2::SimpleIntervalsIOContext context;
    seqan2::GenomicRegion region;

    // Read and check first record.
    readRecord(region, context, it, seqan2::SimpleIntervals());
    SEQAN_ASSERT_EQ(region.seqName, "chr1");
    SEQAN_ASSERT_EQ(region.beginPos, 2489280);
    SEQAN_ASSERT_EQ(region.endPos, 2489282);

    // Read and check second record.
    readRecord(region, context, it, seqan2::SimpleIntervals());
    SEQAN_ASSERT_EQ(region.seqName, "chr4");
    SEQAN_ASSERT_EQ(region.beginPos, 2489840);
    SEQAN_ASSERT_EQ(region.endPos, 2489841);

    // We should be at the end of the file.
    SEQAN_ASSERT(atEnd(it));
}

SEQAN_DEFINE_TEST(test_simple_intervals_io_write_records)
{
    // Output buffer and output iterator.
    seqan2::CharString out;
    typename seqan2::DirectionIterator<seqan2::CharString, seqan2::Output>::Type it =
        directionIterator(out, seqan2::Output());

    // Buffer and record.
    seqan2::GenomicRegion region;
    seqan2::SimpleIntervalsIOContext context;

    // Write out first record.
    region.seqName = "chr1";
    region.beginPos = 2489280;
    region.endPos = 2489282;
    writeRecord(it, context, region, seqan2::SimpleIntervals());

    // Write out second record.
    region.seqName = "chr4";
    region.beginPos = 2489840;
    region.endPos = 2489841;
    writeRecord(it, context, region, seqan2::SimpleIntervals());

    seqan2::CharString expected = "chr1:2489281-2489282\n"
                                 "chr4:2489841\n";
    SEQAN_ASSERT_EQ(expected, out);
}

SEQAN_DEFINE_TEST(test_simple_intervals_io_smart_file_read)
{
    // Input file contents and input iterator.
    std::istringstream input("chr1:2489281-2489282\n"
                             "chr4:2489841\n");
    seqan2::SimpleIntervalsFileIn simple_intervalsIn(input);

    // Buffers and record.
    seqan2::SimpleIntervalsIOContext context;
    seqan2::GenomicRegion region;

    // Read and check first record.
    readRecord(region, simple_intervalsIn);
    SEQAN_ASSERT_EQ(region.seqName, "chr1");
    SEQAN_ASSERT_EQ(region.beginPos, 2489280);
    SEQAN_ASSERT_EQ(region.endPos, 2489282);

    // Read and check second record.
    readRecord(region, simple_intervalsIn);
    SEQAN_ASSERT_EQ(region.seqName, "chr4");
    SEQAN_ASSERT_EQ(region.beginPos, 2489840);
    SEQAN_ASSERT_EQ(region.endPos, 2489841);

    // We should be at the end of the file.
    SEQAN_ASSERT(atEnd(simple_intervalsIn));
}

SEQAN_DEFINE_TEST(test_simple_intervals_io_smart_file_write)
{
    // Output buffer and output iterator.
    std::ostringstream output;
    seqan2::SimpleIntervalsFileOut simple_intervalsOut(output, seqan2::SimpleIntervals());

    // Buffer and record.
    seqan2::GenomicRegion region;
    seqan2::SimpleIntervalsIOContext context;

    // Write out first record.
    region.seqName = "chr1";
    region.beginPos = 2489280;
    region.endPos = 2489282;
    writeRecord(simple_intervalsOut, region);

    // Write out second record.
    region.seqName = "chr4";
    region.beginPos = 2489840;
    region.endPos = 2489841;
    writeRecord(simple_intervalsOut, region);

    seqan2::CharString expected = "chr1:2489281-2489282\n"
                                 "chr4:2489841\n";
    SEQAN_ASSERT_EQ(expected, output.str());
}

SEQAN_BEGIN_TESTSUITE(test_simple_intervals_io)
{
	SEQAN_CALL_TEST(test_simple_intervals_io_read_records);
	SEQAN_CALL_TEST(test_simple_intervals_io_write_records);

	SEQAN_CALL_TEST(test_simple_intervals_io_smart_file_read);
	SEQAN_CALL_TEST(test_simple_intervals_io_smart_file_write);
}
SEQAN_END_TESTSUITE
