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#include "googletest.h"

#include "clangiasyncjob.h"
#include "dummyclangipcclient.h"
#include "processevents-utilities.h"

#include <clangdocument.h>
#include <clangdocumentprocessor.h>
#include <clangdocuments.h>
#include <clangjobrequest.h>
#include <clangjobs.h>
#include <unsavedfiles.h>

using namespace ClangBackEnd;

namespace {

class DocumentProcessor : public ::testing::Test
{
protected:
    void SetUp() override;
    void TearDown() override;
    bool waitUntilAllJobsFinished(int timeOutInMs = 10000) const;

protected:
    ClangBackEnd::UnsavedFiles unsavedFiles;
    ClangBackEnd::Documents documents{unsavedFiles};

    DummyIpcClient dummyIpcClient;

    Utf8String filePath{Utf8StringLiteral(TESTDATA_DIR"/translationunits.cpp")};
    std::unique_ptr<ClangBackEnd::DocumentProcessor> documentProcessor;
};

using DocumentProcessorSlowTest = DocumentProcessor;

TEST_F(DocumentProcessor, ProcessEmpty)
{
    const JobRequests jobsStarted = documentProcessor->process();

    ASSERT_THAT(jobsStarted.size(), 0);
}

TEST_F(DocumentProcessorSlowTest, ProcessSingleJob)
{
    const JobRequest jobRequest
            = documentProcessor->createJobRequest(JobRequest::Type::UpdateAnnotations);
    documentProcessor->addJob(jobRequest);

    const JobRequests jobsStarted = documentProcessor->process();

    ASSERT_THAT(jobsStarted.size(), 1);
}

void DocumentProcessor::SetUp()
{
    const QVector<FileContainer> fileContainer{FileContainer(filePath)};

    ClangBackEnd::Document document = {documents.create(fileContainer).front()};
    documents.setVisibleInEditors({filePath});
    documents.setUsedByCurrentEditor(filePath);
    documentProcessor = std::make_unique<ClangBackEnd::DocumentProcessor>(
                document, documents, unsavedFiles, dummyIpcClient);
}

void DocumentProcessor::TearDown()
{
    ASSERT_TRUE(waitUntilAllJobsFinished()); // QFuture/QFutureWatcher is implemented with events
}

bool DocumentProcessor::waitUntilAllJobsFinished(int timeOutInMs) const
{
    const auto noJobsRunningAnymore = [this](){ return documentProcessor->runningJobs().isEmpty(); };

    return ProcessEventUtilities::processEventsUntilTrue(noJobsRunningAnymore, timeOutInMs);
}

} // anonymous