/****************************************************************************************

**

** Copyright (C) 2013 Jolla Ltd.

** Contact: Marko Mattila <marko.mattila@jollamobile.com>

** All rights reserved.

**

** This file is part of Nemo Transfer Engine package.

**

** You may use this file under the terms of the GNU Lesser General

** Public License version 2.1 as published by the Free Software Foundation

** and appearing in the file license.lgpl included in the packaging

** of this file.

**

** This library is free software; you can redistribute it and/or

** modify it under the terms of the GNU Lesser General Public

** License version 2.1 as published by the Free Software Foundation

** and appearing in the file license.lgpl included in the packaging

** of this file.

**

** This library 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

** Lesser General Public License for more details.

**

****************************************************************************************/

#include "ut_imageoperation.h"

#include <qtest.h>

#include <quillmetadata/QuillMetadata>

#include "imageoperation.h"

#include <QtDebug>

#include <QDir>

QString ut_imageoperation::createTestFile(const QString &fileName, bool writeContent)

{

QString f = QDir::tempPath() + QDir::separator() + fileName;

if (writeContent) {

QFile file(f);

file.open(QIODevice::WriteOnly);

const char * msg = "content";

file.write(msg, qstrlen(msg));

file.close();

}

return f;

}

void ut_imageoperation::testUniqueFilePath()

{

QStringList tempFiles;

tempFiles << createTestFile("img_001.jpg");

// Bad input

QCOMPARE(ImageOperation::uniqueFilePath(QString()), QString());

// Non existing file

QCOMPARE(ImageOperation::uniqueFilePath(QLatin1String("/home/nemo/Pictures/img_001.jpg")), QString());

// Existing file

QStringList tmp;

tmp << ImageOperation::uniqueFilePath(tempFiles.at(0));

QCOMPARE(tmp.last().endsWith(QLatin1String("_1.jpg")), true);

tmp.clear();

// Add two more files

tempFiles << createTestFile("img_002.jpg")

<< createTestFile("img_004.jpg");

// Create couple of temp files from the same source file. Note files must exists

// on a disk

tmp << ImageOperation::uniqueFilePath(tempFiles.at(2));

QFile::copy(tempFiles.at(2), tmp.last());

QCOMPARE(tmp.last().endsWith(QLatin1String("_1.jpg")), true);

tmp << ImageOperation::uniqueFilePath(tempFiles.at(2));

QFile::copy(tempFiles.at(2), tmp.last());

QCOMPARE(tmp.last().endsWith(QLatin1String("_2.jpg")), true);

// Remove the first file. This should handle the case that we are not getting

// a new temp file with _2.jpg as a suffix because this should take into account

// the removed files too.

QFile::remove(tmp.first());

QCOMPARE(ImageOperation::uniqueFilePath(tempFiles.at(2)).endsWith("_3.jpg"), true);

// Remove all the files generated for this test case

foreach(QString f, tmp) {

QFile::remove(f);

}

foreach(QString f, tempFiles) {

QFile::remove(f);

}

}

void ut_imageoperation::testScale()

{

QVERIFY(!img.isNull());

QString target = ImageOperation::uniqueFilePath(filePath);

// Invalid sourceFile -> fail

QCOMPARE(ImageOperation::scaleImage("", 0.5, target), QString());

// Valid source file, invalid scaleFactor -> fail

QCOMPARE(ImageOperation::scaleImage(filePath, -1.0, target), QString());

QCOMPARE(ImageOperation::scaleImage(filePath, 0, target), QString());

QCOMPARE(ImageOperation::scaleImage(filePath, 1.0, target), QString());

// Proper source file, proper scale factor, proper target file

QString result = ImageOperation::scaleImage(filePath, 0.5, target);

QCOMPARE(result, target);

QImage resImage(result);

QCOMPARE(resImage.size(), img.size()*0.5);

QFile::remove(result);

result = ImageOperation::scaleImage(filePath, 0.1, target);

resImage.load(result);

QCOMPARE(resImage.size(), img.size()*0.1);

QFile::remove(result);

result = ImageOperation::scaleImage(filePath, 0.9, target);

resImage.load(result);

QVERIFY(qAbs(resImage.width() - img.width()*0.9) < 2);

QVERIFY(qAbs(resImage.height() - img.height()*0.9) < 2);

QFile::remove(result);

}

void ut_imageoperation::testDropMetadata()

{

// NOTE: The test image doesn't contain all metadata fields such as

// title description, but it contains the most essential fields related

// to location and the author.

// First make sure that there is metadata

QCOMPARE(QuillMetadata::canRead("images/testimage.jpg"), true);

QuillMetadata md("images/testimage.jpg");

QCOMPARE(md.isValid(), true);

QVariant creator = md.entry(QuillMetadata::Tag_Creator);

QVariant city = md.entry(QuillMetadata::Tag_City);

QVariant country = md.entry(QuillMetadata::Tag_Country);

QVariant location= md.entry(QuillMetadata::Tag_Location);

QVariant lat = md.entry(QuillMetadata::Tag_GPSLatitude);

QVariant lon = md.entry(QuillMetadata::Tag_GPSLongitude);

// These shound't be null for the original image

QCOMPARE(creator.isNull(), false);

QCOMPARE(city.isNull(), false);

QCOMPARE(country.isNull(), false);

QCOMPARE(location.isNull(),false);

QCOMPARE(lat.isNull(), false);

QCOMPARE(lon.isNull(), false);

QVERIFY(!path.isNull());

QCOMPARE(QFile::exists(path), true);

QCOMPARE(QuillMetadata::canRead(path), true);

QuillMetadata md2(path);

QCOMPARE(md2.isValid(), true);

creator = md2.entry(QuillMetadata::Tag_Creator);

city = md2.entry(QuillMetadata::Tag_City);

country = md2.entry(QuillMetadata::Tag_Country);

location= md2.entry(QuillMetadata::Tag_Location);

lat = md2.entry(QuillMetadata::Tag_GPSLatitude);

lon = md2.entry(QuillMetadata::Tag_GPSLongitude);

// After removing metadata these should be fine.

QCOMPARE(creator.isNull(), true);

QCOMPARE(city.isNull(), true);

QCOMPARE(country.isNull(), true);

QCOMPARE(location.isNull(),true);

QCOMPARE(lat.isNull(), true);

QCOMPARE(lon.isNull(), true);

// Remove the test image

QFile::remove(path);

}

/*

QTEST_MAIN(ut_imageoperation)

#include "ut_imageoperation.moc"

*/