/*
 * This file is part of KDevelop
 * Copyright 2012 Milian Wolff <mail@milianw.de>
 *
 * This program 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 2 of
 * the License or (at your option) version 3 or any later version
 * accepted by the membership of KDE e.V. (or its successor approved
 * by the membership of KDE e.V.), which shall act as a proxy
 * defined in Section 14 of version 3 of the license.
 *
 * 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "test_path.h"

#include <util/path.h>

#include <tests/autotestshell.h>
#include <tests/testcore.h>

#include <QtTest>

#include <KUrl>

QTEST_MAIN(TestPath);

using namespace KDevelop;

static const int FILES_PER_FOLDER = 10;
static const int FOLDERS_PER_FOLDER = 5;
static const int TREE_DEPTH = 5;

namespace QTest {
    template<>
    char *toString(const KUrl &url)
    {
        return qstrdup(qPrintable(url.pathOrUrl()));
    }
}

template<typename T>
T stringToUrl(const QString& path)
{
    return T(path);
}

template<>
QStringList stringToUrl(const QString& path)
{
    return path.split('/');
}

template<typename T>
T childUrl(const T& parent, const QString& child)
{
    return T(parent, child);
}

template<>
QStringList childUrl(const QStringList& parent, const QString& child)
{
    QStringList ret = parent;
    ret << child;
    return ret;
}

template<>
QUrl childUrl(const QUrl& parent, const QString& child)
{
    QUrl ret = parent;
    ret.setPath(ret.path() + '/' + child);
    return ret;
}

template<>
KUrl childUrl(const KUrl& parent, const QString& child)
{
    KUrl ret = parent;
    ret.addPath(child);
    return ret;
}

template<typename T>
QVector<T> generateData(const T& parent, int level)
{
    QVector<T> ret;
    // files per folder
    for (int i = 0; i < FILES_PER_FOLDER; ++i) {
        const QString fileName = QString("file%1.txt").arg(i);
        const T file = childUrl<T>(parent, fileName);
        Q_ASSERT(!ret.contains(file));
        ret << file;
    }
    // nesting depth
    if (level < TREE_DEPTH) {
        // folders per folder
        for (int i = 0; i < FOLDERS_PER_FOLDER; ++i) {
            const QString folderName = QString("folder%1").arg(i);
            const T folder = childUrl<T>(parent, folderName);
            Q_ASSERT(!ret.contains(folder));
            ret << folder;
            ret += generateData<T>(folder, level + 1);
        }
    }
    return ret;
}

template<typename T>
void runBenchmark()
{
    QBENCHMARK {
        const T base = stringToUrl<T>("/tmp/foo/bar");
        generateData(base, 0);
    }
}

void TestPath::initTestCase()
{
    AutoTestShell::init();
    TestCore::initialize(Core::NoUi);
}

void TestPath::cleanupTestCase()
{
    TestCore::shutdown();
}

void TestPath::bench_kurl()
{
    runBenchmark<KUrl>();
}

void TestPath::bench_qurl()
{
    runBenchmark<QUrl>();
}

void TestPath::bench_qstringlist()
{
    runBenchmark<QStringList>();
}

void TestPath::bench_path()
{
    runBenchmark<Path>();
}

void TestPath::bench_fromLocalPath()
{
    QFETCH(int, variant);

    const QString input("/foo/bar/asdf/bla/blub.h");
    const int repeat = 1000;
    if (variant == 1) {
        QBENCHMARK {
            for(int i = 0; i < repeat; ++i) {
                Path path = Path(KUrl(input));
                Q_UNUSED(path);
            }
        }
    } else if (variant == 2) {
        QBENCHMARK {
            for(int i = 0; i < repeat; ++i) {
                Path path = Path(KUrl::fromPath(input));
                Q_UNUSED(path);
            }
        }
    } else if (variant == 3) {
        QBENCHMARK {
            for(int i = 0; i < repeat; ++i) {
                Path path = Path(QUrl::fromLocalFile(input));
                Q_UNUSED(path);
            }
        }
    } else {
        QFAIL("unexpected variant");
    }
}

void TestPath::bench_fromLocalPath_data()
{
    QTest::addColumn<int>("variant");

    QTest::newRow("KUrl::KUrl") << 1;
    QTest::newRow("KUrl::fromPath") << 2;
    QTest::newRow("QUrl::fromLocalFile") << 3;
}

void TestPath::bench_hash()
{
    const Path path("/my/very/long/path/to/a/file.cpp");
    QBENCHMARK {
        auto hash = qHash(path);
        Q_UNUSED(hash);
    }
}

KUrl comparableUpUrl(const KUrl& url)
{
    KUrl ret = url.upUrl();
    ret.adjustPath(KUrl::RemoveTrailingSlash);
    if (ret.hasPass()) {
        ret.setPass(QString());
    }
    return ret;
}

void TestPath::testPath()
{
    QFETCH(QString, input);

    KUrl url(input);
    url.cleanPath();
    url.adjustPath(KUrl::RemoveTrailingSlash);

    Path optUrl(input);

    if (url.hasPass()) {
        KUrl urlNoPass = url;
        urlNoPass.setPass(QString());
        QCOMPARE(optUrl.toUrl(), urlNoPass);
    } else {
        QCOMPARE(optUrl.toUrl(), url);
    }
    QCOMPARE(optUrl.isLocalFile(), url.isLocalFile());
    QCOMPARE(optUrl.pathOrUrl(), url.pathOrUrl());
    QCOMPARE(optUrl.isValid(), url.isValid());
    QCOMPARE(optUrl.lastPathSegment(), url.fileName());
    QCOMPARE(optUrl.path(), url.path());
    QCOMPARE(optUrl.parent().toUrl(), comparableUpUrl(url));
    QCOMPARE(optUrl.toLocalFile(), url.toLocalFile());

    QCOMPARE(optUrl, Path(input));
    QCOMPARE(optUrl, Path(optUrl));
    QVERIFY(optUrl != Path(input + "/asdf"));

    if (url.isLocalFile() && !input.startsWith("file://")) {
        QCOMPARE(optUrl, Path(KUrl::fromPath(input)));
    }

    QCOMPARE(optUrl, Path(url));

    if (url.isValid()) {
        QVERIFY(optUrl.relativePath(optUrl).isEmpty());

        Path relativePath(optUrl, "foo/bar");
        QCOMPARE(optUrl.relativePath(relativePath), QLatin1String("foo/bar"));
        QCOMPARE(relativePath.relativePath(optUrl), QLatin1String("../../"));
        QVERIFY(optUrl.isParentOf(relativePath));
        QVERIFY(!relativePath.isParentOf(optUrl));

        Path absolutePath(optUrl, "/laa/loo");
        QCOMPARE(absolutePath.path(), QLatin1String("/laa/loo"));
        QCOMPARE(KUrl(url, "/laa/loo").path(), QLatin1String("/laa/loo"));

        Path absolutePath2(optUrl, "/");
        QCOMPARE(absolutePath2.path(), QLatin1String("/"));
        QCOMPARE(KUrl(url, "/").path(), QLatin1String("/"));

        Path unrelatedPath("https://test@blubasdf.com:12345/");
        QCOMPARE(optUrl.relativePath(unrelatedPath), unrelatedPath.pathOrUrl());
        QCOMPARE(unrelatedPath.relativePath(optUrl), optUrl.pathOrUrl());
        QVERIFY(!unrelatedPath.isParentOf(optUrl));
        QVERIFY(!optUrl.isParentOf(unrelatedPath));
    }

    QCOMPARE(Path().relativePath(optUrl), optUrl.pathOrUrl());
    QVERIFY(optUrl.relativePath(Path()).isEmpty());
    QVERIFY(Path().relativePath(Path()).isEmpty());
    QVERIFY(!optUrl.isParentOf(Path()));
    QVERIFY(!Path().isParentOf(optUrl));
    QVERIFY(!Path().isParentOf(Path()));
    QVERIFY(!optUrl.isParentOf(optUrl));

    QCOMPARE(optUrl.isRemote(), optUrl.isValid() && !optUrl.isLocalFile());
    QCOMPARE(optUrl.isRemote(), optUrl.isValid() && !optUrl.remotePrefix().isEmpty());

    url.addPath("test/foo/bar");
    optUrl.addPath("test/foo/bar");
    QCOMPARE(optUrl.lastPathSegment(), url.fileName());
    QCOMPARE(optUrl.path(), url.path());

    url.setFileName("lalalala_adsf.txt");
    optUrl.setLastPathSegment("lalalala_adsf.txt");
    QCOMPARE(optUrl.lastPathSegment(), url.fileName());
    QCOMPARE(optUrl.path(), url.path());

    QCOMPARE(optUrl.parent().toUrl(), comparableUpUrl(url));

    QVERIFY(optUrl.parent().isDirectParentOf(optUrl));
    QVERIFY(!optUrl.parent().parent().isDirectParentOf(optUrl));
    Path a("/foo/bar/asdf/");
    Path b("/foo/bar/");
    QVERIFY(b.isDirectParentOf(a));
    Path c("/foo/bar");
    QVERIFY(c.isDirectParentOf(a));

    optUrl.clear();
    url.clear();
    QCOMPARE(optUrl.toUrl(), url);
}

void TestPath::testPath_data()
{
    QTest::addColumn<QString>("input");

    QTest::ignoreMessage(QtWarningMsg, "Path::init: invalid/unsupported Path encountered: \"\"");
    QTest::ignoreMessage(QtWarningMsg, "Path::init: invalid/unsupported Path encountered: \"\"");
    QTest::ignoreMessage(QtWarningMsg, "Path::init: invalid/unsupported Path encountered: \"\"");
    QTest::newRow("invalid") << "";
    QTest::newRow("path") << "/tmp/foo/asdf.txt";
    QTest::newRow("path-folder") << "/tmp/foo/asdf/";
    QTest::newRow("root") << "/";
    QTest::newRow("clean-path") << "/tmp/..///asdf/";
    QTest::newRow("remote-root") << "http://www.test.com/";
    QTest::newRow("http") << "http://www.test.com/tmp/asdf.txt";
    QTest::newRow("file") << "file:///tmp/foo/asdf.txt";
    QTest::newRow("file-folder") << "file:///tmp/foo/bar/";
    QTest::newRow("ftps") << "ftps://user@host.com/tmp/foo/asdf.txt";
    QTest::newRow("password") << "ftps://user:password@host.com/tmp/asdf.txt";
    QTest::newRow("port") << "http://localhost:8080/foo/bar/test.txt";
}

void TestPath::testPathInvalid()
{
    QFETCH(QString, input);
    Path url(input);
    QVERIFY(!url.isValid());
}

void TestPath::testPathInvalid_data()
{
    QTest::addColumn<QString>("input");

    QTest::ignoreMessage(QtWarningMsg, "Path::init: invalid/unsupported Path encountered: \"\"");
    QTest::newRow("empty") << "";

    QTest::ignoreMessage(QtWarningMsg, "Path::init: invalid/unsupported Path encountered: \"http://test.com/#hello\"");
    QTest::newRow("fragment") << "http://test.com/#hello";

    QTest::ignoreMessage(QtWarningMsg, "Path::init: invalid/unsupported Path encountered: \"http://test.com/?hello\"");
    QTest::newRow("query") << "http://test.com/?hello";

    QTest::ignoreMessage(QtWarningMsg, "Path::init: invalid/unsupported Path encountered: \"file:///home/weis/kde.tgz#gzip:/%23tar:/kdebase\"");
    QTest::newRow("suburl") << "file:///home/weis/kde.tgz#gzip:/#tar:/kdebase";

    QTest::ignoreMessage(QtWarningMsg, "Path::init: invalid/unsupported Path encountered: \"../foo/bar\"");
    QTest::newRow("relative") << "../foo/bar";

    QTest::ignoreMessage(QtWarningMsg, "Path::init: invalid/unsupported Path encountered: \"asdfasdf\"");
    QTest::newRow("name") << "asdfasdf";

    QTest::ignoreMessage(QtWarningMsg, "Path::init: invalid/unsupported Path encountered: \"http://www.test.com\"");
    QTest::newRow("remote-nopath") << "http://www.test.com";
}

void TestPath::testPathOperators()
{
    QFETCH(Path, left);
    QFETCH(Path, right);

    QFETCH(bool, equal);
    QFETCH(bool, less);
    bool greater = !equal && !less;

    QVERIFY(left == left);
    QVERIFY(right == right);
    QCOMPARE(left == right, equal);
    QCOMPARE(right == left, equal);

    QCOMPARE(left < right, less);
    QCOMPARE(left <= right, less || equal);
    QCOMPARE(left > right, greater);
    QCOMPARE(left >= right, greater || equal);

    QCOMPARE(right < left, greater);
    QCOMPARE(right <= left, greater || equal);
    QCOMPARE(right > left, less);
    QCOMPARE(right >= left, less || equal);
}

void TestPath::testPathOperators_data()
{
    QTest::addColumn<Path>("left");
    QTest::addColumn<Path>("right");
    QTest::addColumn<bool>("equal");
    QTest::addColumn<bool>("less");

    Path a("/tmp/a");
    Path b("/tmp/b");
    Path c("/tmp/ac");
    Path d("/d");
    Path e("/tmp");
    Path f("/tmp/");
    Path invalid;

    QTest::newRow("a-b") << a << b << false << true;
    QTest::newRow("a-copy") << a << Path(a) << true << false;
    QTest::newRow("c-a") << c << a << false << false;
    QTest::newRow("c-invalid") << c << invalid << false << false;
    QTest::newRow("c-d") << c << d << false << false;
    QTest::newRow("e-f") << e << f << true << false;
}

void TestPath::testPathAddData()
{
    QFETCH(QString, pathToAdd);

    const QStringList bases = QStringList()
        << "/foo/bar/asdf/"
        << "file:///foo/bar/asdf/"
        << "http://www.asdf.com/foo/bar/asdf/"
        << "/"
        ;
    foreach(const QString& base, bases) {
        KUrl baseUrl(base);
        baseUrl.addPath(pathToAdd);
        baseUrl.cleanPath();
        baseUrl.adjustPath(KUrl::RemoveTrailingSlash);

        Path basePath(base);
        basePath.addPath(pathToAdd);

        QCOMPARE(basePath.toUrl(), baseUrl);
        QCOMPARE(basePath.pathOrUrl(), baseUrl.pathOrUrl());
    }
}

void TestPath::testPathAddData_data()
{
    QTest::addColumn<QString>("pathToAdd");

    const QStringList paths = QStringList()
        << "file.txt"
        << "path/file.txt"
        << "path//file.txt"
        << "/absolute"
        << "../"
        << ".."
        << "../../../"
        << "./foo"
        << "../relative"
        << "../../relative"
        << "../foo/../bar"
        << "../foo/./bar"
        << "../../../../../../../invalid";
    foreach(const QString &path, paths) {
        QTest::newRow(qstrdup(path.toUtf8().constData())) << path;
    }
}

void TestPath::testPathBaseCtor()
{
    QFETCH(QString, base);
    QFETCH(QString, subPath);

    const Path basePath(base);

    const Path path(basePath, subPath);

    KUrl url(base);
    if (KUrl(subPath).isRelative()) {
        url.addPath(subPath);
    } else {
        url.setPath(subPath);
    }
    url.cleanPath();

    QCOMPARE(path.pathOrUrl(), url.pathOrUrl(KUrl::RemoveTrailingSlash));
}

void TestPath::testPathBaseCtor_data()
{
    QTest::addColumn<QString>("base");
    QTest::addColumn<QString>("subPath");

    QTest::newRow("empty") << "" << "";
    QTest::newRow("root-empty") << "/" << "";
    QTest::newRow("root-root") << "/" << "/";
    QTest::newRow("root-relative") << "/" << "bar";
    QTest::newRow("root-relative-dirty") << "/" << "bar//foo/a/..";
    QTest::newRow("empty-relative") << "" << "bar/foo/";
    QTest::newRow("path-relative") << "/foo/bar" << "bar/foo";
    QTest::newRow("path-absolute") << "/foo/bar" << "/bar/foo";
    QTest::newRow("remote-path-absolute") << "http://foo.com/foo/bar" << "/bar/foo";
    QTest::newRow("remote-path-relative") << "http://foo.com/foo/bar" << "bar/foo";
}

void TestPath::testPathCd()
{
    QFETCH(QString, base);
    QFETCH(QString, change);

    Path path = base.isEmpty() ? Path() : Path(base);
    KUrl url(base);

    Path changed = path.cd(change);
    if (url.cd(change)) {
        QVERIFY(changed.isValid());
    }
    url.cleanPath();

    QCOMPARE(changed.pathOrUrl(), url.pathOrUrl(KUrl::RemoveTrailingSlash));
}

void TestPath::testPathCd_data()
{
    QTest::addColumn<QString>("base");
    QTest::addColumn<QString>("change");

    const QVector<QString> bases{"", "/foo", "/foo/bar/asdf", "http://foo.com/", "http://foo.com/foo", "http://foo.com/foo/bar/asdf"};
    foreach (const QString& base, bases) {
        QTest::newRow(qstrdup(qPrintable(base + "-"))) << base << "";
        QTest::newRow(qstrdup(qPrintable(base + "-.."))) << base << "..";
        QTest::newRow(qstrdup(qPrintable(base + "-../"))) << base << "../";
        QTest::newRow(qstrdup(qPrintable(base + "v../foo"))) << base << "../foo";
        QTest::newRow(qstrdup(qPrintable(base + "-."))) << base << ".";
        QTest::newRow(qstrdup(qPrintable(base + "-./"))) << base << "./";
        QTest::newRow(qstrdup(qPrintable(base + "-./foo"))) << base << "./foo";
        QTest::newRow(qstrdup(qPrintable(base + "-./foo/bar"))) << base << "./foo/bar";
        QTest::newRow(qstrdup(qPrintable(base + "-foo/.."))) << base << "foo/..";
        QTest::newRow(qstrdup(qPrintable(base + "-foo/"))) << base << "foo/";
        QTest::newRow(qstrdup(qPrintable(base + "-foo/../bar"))) << base << "foo/../bar";
        QTest::newRow(qstrdup(qPrintable(base + "-/foo"))) << base << "/foo";
        QTest::newRow(qstrdup(qPrintable(base + "-/foo/../bar"))) << base << "/foo/../bar";
    }
}

#include "moc_test_path.cpp"