/**
 * @file LogViewFieldTest.cpp
 * @brief Unit tests for N_LogView::LogViewField.
 *
 * LogViewField is the tree node LogView builds from a telegram specification.
 * These tests cover the name/label handling, the value list, the child tree and
 * the timestamp-field detection. They deliberately avoid the accessors that
 * dereference the XDR element, which needs a parsed specification file.
 */

#include <gtest/gtest.h>

#include <QtCore/QString>
#include <QtCore/QStringList>

#include "LogViewField.hpp"

using N_LogView::LogViewField;

namespace
{

LogViewField makeField(const QString &name,
                       LogViewField::E_FieldKind kind = LogViewField::e_FieldKindEdit)
{
  return LogViewField(name, kind, nullptr);
}

} // namespace

TEST(LogViewFieldTest, ConstructorStoresNameAndKind)
{
  const LogViewField field = makeField(QStringLiteral("issi"), LogViewField::e_FieldKindBorder);

  EXPECT_EQ(field.name(), QStringLiteral("issi"));
  EXPECT_EQ(field.kind(), LogViewField::e_FieldKindBorder);
  EXPECT_EQ(field.xdrElement(), nullptr);
}

TEST(LogViewFieldTest, SetNameReplacesTheName)
{
  LogViewField field = makeField(QStringLiteral("old"));

  field.setName(QStringLiteral("new"));

  EXPECT_EQ(field.name(), QStringLiteral("new"));
}

TEST(LogViewFieldTest, MakeCleanCapitalisesWordsAndDropsUnderscores)
{
  EXPECT_EQ(LogViewField::makeClean(QStringLiteral("utm_nordwert")),
            QStringLiteral("Utm Nordwert"));
  EXPECT_EQ(LogViewField::makeClean(QStringLiteral("issi")), QStringLiteral("Issi"));
}

TEST(LogViewFieldTest, MakeCleanStripsTheRecordTypeSuffix)
{
  EXPECT_EQ(LogViewField::makeClean(QStringLiteral("gef_header_rt")),
            QStringLiteral("Gef Header"));
}

TEST(LogViewFieldTest, MakeCleanHandlesTheEmptyString)
{
  EXPECT_EQ(LogViewField::makeClean(QString()), QString());
}

TEST(LogViewFieldTest, CleanNameUsesMakeClean)
{
  const LogViewField field = makeField(QStringLiteral("gps_zeit"));

  EXPECT_EQ(field.cleanName(), LogViewField::makeClean(QStringLiteral("gps_zeit")));
}

TEST(LogViewFieldTest, ValueListStartsEmpty)
{
  const LogViewField field = makeField(QStringLiteral("issi"));

  EXPECT_EQ(field.valueListSize(), 0);
  EXPECT_TRUE(field.value(0).isEmpty());
}

TEST(LogViewFieldTest, AddValueAppendsInOrder)
{
  LogViewField field = makeField(QStringLiteral("issi"));

  field.addValue(QStringLiteral("11"));
  field.addValue(QStringLiteral("22"));

  EXPECT_EQ(field.valueListSize(), 2);
  EXPECT_EQ(field.value(0), QStringLiteral("11"));
  EXPECT_EQ(field.value(1), QStringLiteral("22"));
}

TEST(LogViewFieldTest, ValueReturnsEmptyForAnOutOfRangeIndex)
{
  LogViewField field = makeField(QStringLiteral("issi"));
  field.addValue(QStringLiteral("11"));

  EXPECT_TRUE(field.value(1).isEmpty());
  EXPECT_TRUE(field.value(99).isEmpty());
}

TEST(LogViewFieldTest, AddValueBinaryHexExpandsToDecimalBytes)
{
  LogViewField field = makeField(QStringLiteral("payload"));

  field.addValueBinaryHex(QStringLiteral("00ff10"));

  ASSERT_EQ(field.valueListSize(), 3);
  EXPECT_EQ(field.value(0), QStringLiteral("0"));
  EXPECT_EQ(field.value(1), QStringLiteral("255"));
  EXPECT_EQ(field.value(2), QStringLiteral("16"));
}

TEST(LogViewFieldTest, DateTimeFieldIsDetectedCaseInsensitively)
{
  EXPECT_TRUE(makeField(QStringLiteral("gps_zeit")).isDateTimeField());
  EXPECT_TRUE(makeField(QStringLiteral("GPS_ZEIT")).isDateTimeField());
  EXPECT_FALSE(makeField(QStringLiteral("issi")).isDateTimeField());
}

TEST(LogViewFieldTest, MSecsFieldIsDetectedCaseInsensitively)
{
  EXPECT_TRUE(makeField(QStringLiteral("timestamp")).isMSecsField());
  EXPECT_TRUE(makeField(QStringLiteral("EffectStart")).isMSecsField());
  EXPECT_FALSE(makeField(QStringLiteral("gps_zeit")).isMSecsField());
}

TEST(LogViewFieldTest, RawValueSkipsTheTimestampConversion)
{
  LogViewField field = makeField(QStringLiteral("timestamp"));
  field.addValue(QStringLiteral("1500000000000"));

  EXPECT_EQ(field.value(0, true), QStringLiteral("1500000000000"));
  EXPECT_NE(field.value(0), QStringLiteral("1500000000000"));
}

TEST(LogViewFieldTest, ScalarPropertiesRoundTrip)
{
  LogViewField field = makeField(QStringLiteral("issi"));

  field.setType(QStringLiteral("uint32_t"));
  field.setSize(4);
  field.setIsRightAligned(true);
  field.setToolTipText(QStringLiteral("individual subscriber identity"));
  field.setHasContent(false);

  EXPECT_EQ(field.type(), QStringLiteral("uint32_t"));
  EXPECT_EQ(field.size(), 4);
  EXPECT_TRUE(field.isRightAligned());
  EXPECT_EQ(field.toolTipText(), QStringLiteral("individual subscriber identity"));
  EXPECT_FALSE(field.hasContent());
}

TEST(LogViewFieldTest, MaxArraySizeCarriesTheDynamicFlag)
{
  LogViewField field = makeField(QStringLiteral("players"));

  field.setMaxArraySize(8, false);
  EXPECT_EQ(field.maxArraySize(), 8);
  EXPECT_FALSE(field.isDynamicArray());

  field.setMaxArraySize(16, true);
  EXPECT_EQ(field.maxArraySize(), 16);
  EXPECT_TRUE(field.isDynamicArray());
}

TEST(LogViewFieldTest, JsonPathRoundTrips)
{
  LogViewField field = makeField(QStringLiteral("issi"));
  const QStringList path{QStringLiteral("header"), QStringLiteral("issi")};

  field.setJsonPath(path);

  EXPECT_EQ(field.jsonPath(), path);
}

TEST(LogViewFieldTest, ChildrenAreOwnedAndOrdered)
{
  LogViewField parent(QStringLiteral("header"), LogViewField::e_FieldKindBorder, nullptr);
  EXPECT_EQ(parent.childCount(), 0);

  auto *first = new LogViewField(QStringLiteral("a"), LogViewField::e_FieldKindEdit, nullptr);
  auto *second = new LogViewField(QStringLiteral("b"), LogViewField::e_FieldKindEdit, nullptr);
  parent.addChild(first);
  parent.addChild(second);

  ASSERT_EQ(parent.childCount(), 2);
  EXPECT_EQ(parent.child(0), first);
  EXPECT_EQ(parent.child(1), second);

  parent.removeLastChild();
  EXPECT_EQ(parent.childCount(), 1);
  EXPECT_EQ(parent.child(0), first);
}