/*
 * Copyright (C) 2011 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. 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.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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.
 */

#include "config.h"

#include "Assertions.h"
#include "TestInvocation.h"

#include <QBuffer>
#include <QCryptographicHash>
#include <WebKit2/WKImageQt.h>
#include <stdio.h>
#include "UnusedParam.h"

namespace WTR {

static void dumpImage(const QImage& image)
{
    QBuffer buffer;
    buffer.open(QBuffer::WriteOnly);
    image.save(&buffer, "PNG");
    buffer.close();
    const QByteArray& data = buffer.data();

    printf("Content-Type: %s\n", "image/png");
    printf("Content-Length: %lu\n", static_cast<unsigned long>(data.length()));

    const quint32 bytesToWriteInOneChunk = 1 << 15;
    quint32 dataRemainingToWrite = data.length();
    const char* ptr = data.data();
    while (dataRemainingToWrite) {
        quint32 bytesToWriteInThisChunk = qMin(dataRemainingToWrite, bytesToWriteInOneChunk);
        quint32 bytesWritten = fwrite(ptr, 1, bytesToWriteInThisChunk, stdout);
        if (bytesWritten != bytesToWriteInThisChunk)
            break;
        dataRemainingToWrite -= bytesWritten;
        ptr += bytesWritten;
    }

    fflush(stdout);
}

void TestInvocation::dumpPixelsAndCompareWithExpected(WKImageRef imageRef, WKArrayRef repaintRects)
{
    //FIXME: https://bugs.webkit.org/show_bug.cgi?id=68870
    UNUSED_PARAM(repaintRects);

    QImage image = WKImageCreateQImage(imageRef);
    QCryptographicHash hash(QCryptographicHash::Md5);
    for (unsigned row = 0; row < image.height(); ++row)
        hash.addData(reinterpret_cast<const char*>(image.constScanLine(row)), image.bytesPerLine());

    QByteArray actualHash = hash.result().toHex();
    ASSERT(actualHash.size() == 32);
    if (!compareActualHashToExpectedAndDumpResults(actualHash)) {
        image.setText("checksum", actualHash);
        dumpImage(image);
    }
}

} // namespace WTR