#pragma once

/** An embedded database wrapper with an intuitive, type-safe interface.

    This collection of classes let's you access embedded SQLite databases
    using C++ syntax that is very similar to regular SQL.

    This module requires the @ref beast_sqlite external module.
*/

#if defined(__clang__)
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated"
#endif

#include <xrpl/basics/Log.h>
#include <xrpl/core/JobQueue.h>

#define SOCI_USE_BOOST
#include <soci/soci.h>

#include <cstdint>
#include <string>
#include <vector>

namespace sqlite_api {
struct sqlite3;
}

namespace xrpl {

class BasicConfig;

/**
   DBConfig is used when a client wants to delay opening a soci::session after
   parsing the config parameters. If a client want to open a session
   immediately, use the free function "open" below.
 */
class DBConfig
{
    std::string connectionString_;
    explicit DBConfig(std::string const& dbPath);

public:
    DBConfig(BasicConfig const& config, std::string const& dbName);
    std::string
    connectionString() const;
    void
    open(soci::session& s) const;
};

/**
   Open a soci session.

   @param s Session to open.

   @param config Parameters to pick the soci backend and how to connect to that
                 backend.

   @param dbName Name of the database. This has different meaning for different
                 backends. Sometimes it is part of a filename (sqlite3),
                 other times it is a database name (postgresql).
*/
void
open(soci::session& s, BasicConfig const& config, std::string const& dbName);

/**
 *  Open a soci session.
 *
 *  @param s Session to open.
 *  @param beName Backend name.
 *  @param connectionString Connection string to forward to soci::open.
 *         see the soci::open documentation for how to use this.
 *
 */
void
open(soci::session& s, std::string const& beName, std::string const& connectionString);

std::uint32_t
getKBUsedAll(soci::session& s);
std::uint32_t
getKBUsedDB(soci::session& s);

void
convert(soci::blob& from, std::vector<std::uint8_t>& to);
void
convert(soci::blob& from, std::string& to);
void
convert(std::vector<std::uint8_t> const& from, soci::blob& to);
void
convert(std::string const& from, soci::blob& to);

class Checkpointer : public std::enable_shared_from_this<Checkpointer>
{
public:
    virtual std::uintptr_t
    id() const = 0;
    virtual ~Checkpointer() = default;

    virtual void
    schedule() = 0;

    virtual void
    checkpoint() = 0;
};

/** Returns a new checkpointer which makes checkpoints of a
    soci database every checkpointPageCount pages, using a job on the job queue.

    The checkpointer contains references to the session and job queue
    and so must outlive them both.
 */
std::shared_ptr<Checkpointer>
makeCheckpointer(std::uintptr_t id, std::weak_ptr<soci::session>, JobQueue&, Logs&);

}  // namespace xrpl

#if defined(__clang__)
#pragma clang diagnostic pop
#endif