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#ifndef CLANGBACKEND_TRANSLATIONUNITS_H
#define CLANGBACKEND_TRANSLATIONUNITS_H

#include "clangfilesystemwatcher.h"
#include "translationunit.h"

#include <filecontainer.h>

#include <QVector>

#include <functional>
#include <vector>

namespace ClangBackEnd {

class ProjectParts;
class UnsavedFiles;
class DiagnosticsChangedMessage;

class TranslationUnits
{
public:
    TranslationUnits(ProjectParts &projectParts, UnsavedFiles &unsavedFiles);

    void createOrUpdate(const QVector<FileContainer> &fileContainers);
    void remove(const QVector<FileContainer> &fileContainers);

    const TranslationUnit &translationUnit(const Utf8String &filePath, const Utf8String &projectPartId) const;
    const TranslationUnit &translationUnit(const FileContainer &fileContainer) const;

    const std::vector<TranslationUnit> &translationUnits() const;

    UnsavedFiles &unsavedFiles() const;

    void addWatchedFiles(QSet<Utf8String> &filePaths);

    void updateTranslationUnitsWithChangedDependency(const Utf8String &filePath);
    void updateTranslationUnitsWithChangedDependencies(const QVector<FileContainer> &fileContainers);

    void sendChangedDiagnostics();

    void setSendChangeDiagnosticsCallback(std::function<void(const DiagnosticsChangedMessage&)> &&callback);

    QVector<FileContainer> newerFileContainers(const QVector<FileContainer> &fileContainers) const;

    const ClangFileSystemWatcher *clangFileSystemWatcher() const;

private:
    void createOrUpdateTranslationUnit(const FileContainer &fileContainer);
    std::vector<TranslationUnit>::iterator findTranslationUnit(const FileContainer &fileContainer);
    std::vector<TranslationUnit>::const_iterator findTranslationUnit(const Utf8String &filePath, const Utf8String &projectPartId) const;
    void checkIfProjectPartExists(const Utf8String &projectFileName) const;
    void checkIfProjectPartsExists(const QVector<FileContainer> &fileContainers) const;
    void sendDiagnosticChangedMessage(const TranslationUnit &translationUnit);
    void removeTranslationUnits(const QVector<FileContainer> &fileContainers);

private:
    ClangFileSystemWatcher fileSystemWatcher;
    std::function<void(const DiagnosticsChangedMessage&)> sendDiagnosticsChangedCallback;
    std::vector<TranslationUnit> translationUnits_;
    ProjectParts &projectParts;
    UnsavedFiles &unsavedFiles_;
};

} // namespace ClangBackEnd

#endif // CLANGBACKEND_TRANSLATIONUNITS_H