/**

 * db_bridge/mysql_db.cpp

 * Copyright 2008 (C) Markus Broeker

 */

#include <cstdlib>

#include <mysql_db.hpp>

#include <console.hpp>

MySQL_DB::MySQL_DB (std::string srv, std::string usr, std::string pwd, std::string db)

{

    server = (srv != "") ? srv : "localhost";

    user = (usr != "") ? usr : getenv ("USER");

    password = pwd;

    database = db;

    conn = mysql_init (NULL);

    if (pwd == "") {

        std::cout << "Passwort von " << user << "@" << server << ": ";

        Console::getpass (password);

    }

}

MySQL_DB::~MySQL_DB ()

{

    if (conn != NULL) {

        mysql_close (conn);

        std::cerr << "Datenbank wird geschlossen" << std::endl;

    }

}

bool MySQL_DB::connect ()

{

    std::cerr << "Verbindungsparameter:" << " host=" << server

        << " user=" << user << " password=" << password << " database=" << database << std::endl;

    if (!mysql_real_connect (conn, server.c_str (), user.c_str (), password.c_str (), database.c_str (), 0, NULL, 0)) {

        std::cerr << server << ": " << mysql_error (conn) << std::endl;

        return false;

    }

    return true;

}

Abstract_DB::DB_RESULT MySQL_DB::query (std::string sql_string)

{

    Abstract_DB::DB_ROW vec;

    Abstract_DB::DB_RESULT rows;

    MYSQL_ROW row;

    int i = 0, num_fields = 0;

    /*

     * send SQL query

     */

    if (mysql_query (conn, sql_string.c_str ())) {

        std::cerr << server << ": " << mysql_error (conn) << std::endl;

        return rows;

    }

    res = mysql_use_result (conn);

    num_fields = mysql_num_fields (res);

    /*

     * push everything into a vector< vector<string> >

     */

    while ((row = mysql_fetch_row (res)) != NULL) {

	for (i = 0; i < num_fields; i++) {

            vec.push_back (row[i]);

        }

        rows.push_back (vec);

        vec.clear ();

    }

    std::cerr << "Die Abfrage hat " << i << " Spalte(n) und " << rows.size () << " Reihe(n)." << std::endl;

    if (res != NULL) {

        mysql_free_result (res);

    }

    return rows;

}