// See the file "COPYING" in the main distribution directory for copyright.
//
// Log writer for SQLITE logs.

#pragma once

#include "zeek/zeek-config.h"

#include "zeek/3rdparty/sqlite3.h"
#include "zeek/Desc.h"
#include "zeek/logging/WriterBackend.h"
#include "zeek/threading/formatters/Ascii.h"

namespace zeek::logging::writer::detail {

class SQLite : public WriterBackend {
public:
    explicit SQLite(WriterFrontend* frontend);
    ~SQLite() override;

    static WriterBackend* Instantiate(WriterFrontend* frontend) { return new SQLite(frontend); }

protected:
    bool DoInit(const WriterInfo& info, int arg_num_fields, const threading::Field* const* arg_fields) override;
    bool DoWrite(int num_fields, const threading::Field* const* fields, threading::Value** vals) override;
    bool DoSetBuf(bool enabled) override { return true; }
    bool DoRotate(const char* rotated_path, double open, double close, bool terminating) override;
    bool DoFlush(double network_time) override { return true; }
    bool DoFinish(double network_time) override { return true; }
    bool DoHeartbeat(double network_time, double current_time) override { return true; }

private:
    bool checkError(int code);

    int AddParams(threading::Value* val, int pos);
    std::string GetTableType(int, int);

    const threading::Field* const* fields; // raw mapping
    unsigned int num_fields;

    sqlite3* db;
    sqlite3_stmt* st;

    std::string set_separator;
    std::string unset_field;
    std::string empty_field;

    int64_t synchronous;
    int64_t journal_mode;

    threading::formatter::Ascii* io;
};

} // namespace zeek::logging::writer::detail
