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#include "googletest.h"

#include "mockpchmanagernotifier.h"
#include "mockpchmanagerserver.h"
#include "mockprecompiledheaderstorage.h"

#include <pchmanagerclient.h>
#include <pchmanagerprojectupdater.h>

#include <filepathcaching.h>
#include <refactoringdatabaseinitializer.h>
#include <precompiledheadersupdatedmessage.h>
#include <removeprojectpartsmessage.h>
#include <updateprojectpartsmessage.h>

namespace {

using ClangBackEnd::PrecompiledHeadersUpdatedMessage;

using testing::_;
using testing::Contains;
using testing::Not;

class PchManagerClient : public ::testing::Test
{
protected:
    NiceMock<MockPchManagerServer> mockPchManagerServer;
    NiceMock<MockPrecompiledHeaderStorage> mockPrecompiledHeaderStorage;
    ClangPchManager::PchManagerClient client{mockPrecompiledHeaderStorage};
    NiceMock<MockPchManagerNotifier> mockPchManagerNotifier{client};
    Sqlite::Database database{":memory:", Sqlite::JournalMode::Memory};
    ClangBackEnd::RefactoringDatabaseInitializer<Sqlite::Database> initializer{database};
    ClangBackEnd::FilePathCaching filePathCache{database};
    ClangPchManager::PchManagerProjectUpdater projectUpdater{mockPchManagerServer, client, filePathCache};
    Utils::SmallString projectPartId{"projectPartId"};
    Utils::SmallString pchFilePath{"/path/to/pch"};
    PrecompiledHeadersUpdatedMessage message{{{projectPartId.clone(), pchFilePath.clone(), 1}}};
    Utils::SmallString projectPartId2{"projectPartId2"};
    Utils::SmallString pchFilePath2{"/path/to/pch2"};
    PrecompiledHeadersUpdatedMessage message2{{{projectPartId2.clone(), pchFilePath2.clone(), 1}}};
};

TEST_F(PchManagerClient, NotifierAttached)
{
    MockPchManagerNotifier notifier(client);

    ASSERT_THAT(client.notifiers(), Contains(&notifier));
}

TEST_F(PchManagerClient, NotifierDetached)
{
    MockPchManagerNotifier *notifierPointer = nullptr;

    {
        MockPchManagerNotifier notifier(client);
        notifierPointer = &notifier;
    }

    ASSERT_THAT(client.notifiers(), Not(Contains(notifierPointer)));
}

TEST_F(PchManagerClient, Update)
{
    EXPECT_CALL(mockPchManagerNotifier, precompiledHeaderUpdated(projectPartId.toQString(), pchFilePath.toQString(), Eq(1)));

    client.precompiledHeadersUpdated(message.clone());
}

TEST_F(PchManagerClient, Remove)
{
    EXPECT_CALL(mockPchManagerNotifier, precompiledHeaderRemoved(projectPartId.toQString()))
        .Times(2);

    projectUpdater.removeProjectParts({QString(projectPartId.clone()),
                                       QString(projectPartId.clone())});
}

TEST_F(PchManagerClient, GetNoProjectPartPchForWrongProjectPartId)
{
    auto optional = client.projectPartPch("foo");

    ASSERT_FALSE(optional);
}

TEST_F(PchManagerClient, GetProjectPartPchForProjectPartId)
{
    client.precompiledHeadersUpdated(std::move(message));

    auto optional = client.projectPartPch(projectPartId);

    ASSERT_TRUE(optional);
}

TEST_F(PchManagerClient, ProjectPartPchRemoved)
{
    client.precompiledHeadersUpdated(std::move(message));

    client.precompiledHeaderRemoved(QString(projectPartId));

    ASSERT_FALSE(client.projectPartPch(projectPartId));
}

TEST_F(PchManagerClient, ProjectPartPchHasNoDublicateEntries)
{
    client.precompiledHeadersUpdated(message.clone());
    client.precompiledHeadersUpdated(message2.clone());

    client.precompiledHeadersUpdated(message.clone());

    ASSERT_THAT(client.projectPartPchs(), SizeIs(2));
}

TEST_F(PchManagerClient, ProjectPartPchForProjectPartIdLastModified)
{
    client.precompiledHeadersUpdated(std::move(message));

    ASSERT_THAT(client.projectPartPch(projectPartId).value().lastModified,
                1);
}

TEST_F(PchManagerClient, ProjectPartPchForProjectPartIdIsUpdated)
{
    client.precompiledHeadersUpdated(message.clone());
    PrecompiledHeadersUpdatedMessage updateMessage{{{projectPartId.clone(), pchFilePath.clone(), 42}}};

    client.precompiledHeadersUpdated(updateMessage.clone());

    ASSERT_THAT(client.projectPartPch(projectPartId).value().lastModified,
                42);
}

TEST_F(PchManagerClient, ProjectPartPchAddedToDatabase)
{
    EXPECT_CALL(mockPrecompiledHeaderStorage, insertPrecompiledHeader(TypedEq<Utils::SmallStringView>(projectPartId),
                                                                      TypedEq<Utils::SmallStringView>(pchFilePath),
                                                                      TypedEq<long long>(1)));

    client.precompiledHeadersUpdated(message.clone());
}

TEST_F(PchManagerClient, ProjectPartPchRemovedFromDatabase)
{
    EXPECT_CALL(mockPrecompiledHeaderStorage, deletePrecompiledHeader(TypedEq<Utils::SmallStringView>(projectPartId)));


    projectUpdater.removeProjectParts({QString(projectPartId)});
}

}