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/// \file store/read_backend.hpp
/// Interface to the backend database for read-only operations.

#if !defined(STORE_READ_BACKEND_HPP)
#define STORE_READ_BACKEND_HPP

#include "store/read_backend_fwd.hpp"

#include <memory>

#include "store/read_transaction_fwd.hpp"
#include "utils/fs/path_fwd.hpp"
#include "utils/sqlite/database_fwd.hpp"

namespace store {


namespace detail {


utils::sqlite::database open_and_setup(const utils::fs::path&, const int);


}  // anonymous namespace


/// Public interface to the database store for read-only operations.
class read_backend {
    struct impl;

    /// Pointer to the shared internal implementation.
    std::shared_ptr< impl > _pimpl;

    read_backend(impl*);

public:
    ~read_backend(void);

    static read_backend open_ro(const utils::fs::path&);
    void close(void);

    utils::sqlite::database& database(void);
    read_transaction start_read(void);
};


}  // namespace store

#endif  // !defined(STORE_READ_BACKEND_HPP)