#include <QtTest/QTest>

#include "PDFDoc.h"
#include "GlobalParams.h"
#include "OptionalContent.h"

#include "Outline.h"
#include "poppler-private.h"

class TestUtf8Document : public QObject
{
    Q_OBJECT
public:
    explicit TestUtf8Document(QObject *parent = nullptr) : QObject(parent) { }
private Q_SLOTS:
    static void checkStrings();
};

inline QString outlineItemTitle(OutlineItem *item)
{
    if (!item) {
        return {};
    }
    const std::vector<Unicode> &title = item->getTitle();
    return QString::fromUcs4(reinterpret_cast<const char32_t *>(title.data()), title.size());
}

void TestUtf8Document::checkStrings()
{

    globalParams = std::make_unique<GlobalParams>();
    auto doc = std::make_unique<PDFDoc>(std::make_unique<GooString>(TESTDATADIR "/unittestcases/pdf20-utf8-test.pdf"));
    QVERIFY(doc);
    QVERIFY(doc->isOk());

    QVERIFY(doc->getOptContentConfig() && doc->getOptContentConfig()->hasOCGs());

    QCOMPARE(Poppler::UnicodeParsedString(doc->getDocInfoTitle().value_or("WRONG")), QString::fromUtf8("表ポあA鷗ŒéＢ逍Üßªąñ丂㐀𠀀")); // clazy:exclude=qstring-allocations

    QSet<QString> expectedNames { QString::fromUtf8("گچپژ"), QString::fromUtf8("Layer 1") }; // clazy:exclude=qstring-allocations
    QSet<QString> foundNames;

    for (const auto &[ref, group] : doc->getOptContentConfig()->getOCGs()) {
        foundNames.insert(Poppler::UnicodeParsedString(group->getName()));
    }
    QCOMPARE(expectedNames, foundNames);

    const auto *outlineItems = doc->getOutline()->getItems();
    QVERIFY(outlineItems);
    QCOMPARE(outlineItems->size(), 3);

    QCOMPARE(outlineItemTitle(outlineItems->at(0)), QString::fromUtf8("PDF 2.0 with UTF-8 test file")); // clazy:exclude=qstring-allocations
    QCOMPARE(outlineItemTitle(outlineItems->at(1)), QString::fromUtf8("\u202A\u202Atest\u202A")); // clazy:exclude=qstring-allocations
    QCOMPARE(outlineItemTitle(outlineItems->at(2)), QString::fromUtf8("🌈️\n" /*emoji rainbow flag*/)); // clazy:exclude=qstring-allocations
}

QTEST_GUILESS_MAIN(TestUtf8Document)

#include "check_utf8document.moc"
