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#pragma once

#include "client.h"

#include <coreplugin/locator/ilocatorfilter.h>
#include <languageserverprotocol/lsptypes.h>
#include <languageserverprotocol/languagefeatures.h>
#include <languageserverprotocol/workspace.h>

namespace Core { class IEditor; }

namespace LanguageClient {

class DocumentLocatorFilter : public Core::ILocatorFilter
{
    Q_OBJECT
public:
    DocumentLocatorFilter();

    void updateCurrentClient();
    void prepareSearch(const QString &entry) override;
    QList<Core::LocatorFilterEntry> matchesFor(QFutureInterface<Core::LocatorFilterEntry> &future,
                                               const QString &entry) override;
    void accept(Core::LocatorFilterEntry selection,
                QString *newText,
                int *selectionStart,
                int *selectionLength) const override;
    void refresh(QFutureInterface<void> &future) override;

signals:
    void symbolsUpToDate(QPrivateSignal);

protected:
    QPointer<DocumentSymbolCache> m_symbolCache;
    LanguageServerProtocol::DocumentUri m_currentUri;

private:
    void updateSymbols(const LanguageServerProtocol::DocumentUri &uri,
                       const LanguageServerProtocol::DocumentSymbolsResult &symbols);
    void resetSymbols();

    template<class T>
    QList<Core::LocatorFilterEntry> generateEntries(const QList<T> &list, const QString &filter);

    QMutex m_mutex;
    QMetaObject::Connection m_updateSymbolsConnection;
    QMetaObject::Connection m_resetSymbolsConnection;
    Utils::optional<LanguageServerProtocol::DocumentSymbolsResult> m_currentSymbols;
};

class WorkspaceLocatorFilter : public Core::ILocatorFilter
{
    Q_OBJECT
public:
    WorkspaceLocatorFilter();

    void prepareSearch(const QString &entry) override;
    QList<Core::LocatorFilterEntry> matchesFor(QFutureInterface<Core::LocatorFilterEntry> &future,
                                               const QString &entry) override;
    void accept(Core::LocatorFilterEntry selection,
                QString *newText,
                int *selectionStart,
                int *selectionLength) const override;
    void refresh(QFutureInterface<void> &future) override;

signals:
    void allRequestsFinished(QPrivateSignal);

protected:
    explicit WorkspaceLocatorFilter(const QVector<LanguageServerProtocol::SymbolKind> &filter);

private:
    void handleResponse(Client *client,
                        const LanguageServerProtocol::WorkspaceSymbolRequest::Response &response);

    QMutex m_mutex;
    QMap<Client *, LanguageServerProtocol::MessageId> m_pendingRequests;
    QVector<LanguageServerProtocol::SymbolInformation> m_results;
    QVector<LanguageServerProtocol::SymbolKind> m_filterKinds;
};

class WorkspaceClassLocatorFilter : public WorkspaceLocatorFilter
{
public:
    WorkspaceClassLocatorFilter();
};

class WorkspaceMethodLocatorFilter : public WorkspaceLocatorFilter
{
public:
    WorkspaceMethodLocatorFilter();
};

} // namespace LanguageClient
