/*
 * Copyright (C) 2016+ AzerothCore <www.azerothcore.org>, released under GNU GPL v2 license, you may redistribute it and/or modify it under version 2 of the License, or (at your option), any later version.
 * Copyright (C) 2021+ WarheadCore <https://github.com/WarheadCore>
 */

#ifndef QUERYRESULT_H
#define QUERYRESULT_H

#include "DatabaseEnvFwd.h"
#include "Define.h"
#include <vector>

class AC_DATABASE_API ResultSet
{
public:
    ResultSet(MySQLResult* result, MySQLField* fields, uint64 rowCount, uint32 fieldCount);
    ~ResultSet();

    bool NextRow();
    uint64 GetRowCount() const { return _rowCount; }
    uint32 GetFieldCount() const { return _fieldCount; }
    std::string GetFieldName(uint32 index) const;

    Field* Fetch() const { return _currentRow; }
    Field const& operator[](std::size_t index) const;

protected:
    std::vector<QueryResultFieldMetadata> _fieldMetadata;
    uint64 _rowCount;
    Field* _currentRow;
    uint32 _fieldCount;

private:
    void CleanUp();
    MySQLResult* _result;
    MySQLField* _fields;

    ResultSet(ResultSet const& right) = delete;
    ResultSet& operator=(ResultSet const& right) = delete;
};

class AC_DATABASE_API PreparedResultSet
{
public:
    PreparedResultSet(MySQLStmt* stmt, MySQLResult* result, uint64 rowCount, uint32 fieldCount);
    ~PreparedResultSet();

    bool NextRow();
    uint64 GetRowCount() const { return m_rowCount; }
    uint32 GetFieldCount() const { return m_fieldCount; }

    Field* Fetch() const;
    Field const& operator[](std::size_t index) const;

protected:
    std::vector<QueryResultFieldMetadata> m_fieldMetadata;
    std::vector<Field> m_rows;
    uint64 m_rowCount;
    uint64 m_rowPosition;
    uint32 m_fieldCount;

private:
    MySQLBind* m_rBind;
    MySQLStmt* m_stmt;
    MySQLResult* m_metadataResult;    ///< Field metadata, returned by mysql_stmt_result_metadata

    void CleanUp();
    bool _NextRow();

    PreparedResultSet(PreparedResultSet const& right) = delete;
    PreparedResultSet& operator=(PreparedResultSet const& right) = delete;
};

#endif