/*
    test case
*/
#include <windows.h>

#include <sql.h>
#include <sqlext.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>


void CheckRC(SQLRETURN rc, char* msg, char* filename, int lineno);
#define CHECKRC(FUNCSHN,MSG) CheckRC(FUNCSHN, MSG, __FILE__, __LINE__)

SQLHENV     hEnv = SQL_NULL_HENV;
SQLHDBC     hDbc = SQL_NULL_HDBC;
SQLHSTMT    hStmt = SQL_NULL_HSTMT;
SQLCHAR*    connString;
SQLCHAR     connOut[255]; /* buffer for connection output */
SQLSMALLINT szConnOut; /* num bytes returned in connOut */
SQLINTEGER Version = SQL_OV_ODBC3;

void doDrop()
{   
}

void doCreate()
{   
}

void doTest()
{
    SQLINTEGER m_rows;
    SQLSMALLINT nCols;
    SQLRETURN retcode;
    int nCol;
    int len;

    double id;
    char select_type[20];
    char table[65];
    char type_[11];
    char possible_keys[4097];
    char key[65];
    double key_len;
    char ref[1025];
    double row;
    char extra[256];


    printf("Test....\n");

    CHECKRC(SQLAllocStmt(hDbc, &hStmt), "SQLAllocStmt()" );

    CHECKRC(SQLExecDirect (hStmt, (SQLCHAR *) "EXPLAIN SELECT * from tbl_test WHERE test_id in (SELECT test_id FROM tbl_test)", SQL_NTS), "SQLExecDirect" );

    len = 0;
    CHECKRC( SQLBindCol(hStmt, 1, SQL_C_DOUBLE, &id, 8, &len), "SQLBindCol()" );
    CHECKRC( SQLBindCol(hStmt, 2, SQL_C_CHAR, &select_type, 20, &len), "SQLBindCol()" );
    CHECKRC( SQLBindCol(hStmt, 3, SQL_C_CHAR, &table, 65, &len), "SQLBindCol()" );
    CHECKRC( SQLBindCol(hStmt, 4, SQL_C_CHAR, &type_, 11, &len), "SQLBindCol()" );
    CHECKRC( SQLBindCol(hStmt, 5, SQL_C_CHAR, &possible_keys, 4097, &len), "SQLBindCol()" );
    CHECKRC( SQLBindCol(hStmt, 6, SQL_C_CHAR, &key, 65, &len), "SQLBindCol()" );
    CHECKRC( SQLBindCol(hStmt, 7, SQL_C_DOUBLE, &key_len, 8, &len), "SQLBindCol()" );
    CHECKRC( SQLBindCol(hStmt, 8, SQL_C_CHAR, &ref, 1025, &len), "SQLBindCol()" );
    CHECKRC( SQLBindCol(hStmt, 9, SQL_C_DOUBLE, &row, 8, &len), "SQLBindCol()" );
    CHECKRC( SQLBindCol(hStmt, 10, SQL_C_CHAR, &extra, 256, &len), "SQLBindCol()" );


    CHECKRC(retcode = SQLFetch(hStmt),"SQLFetch()");
    if (retcode == SQL_SUCCESS || retcode == SQL_SUCCESS_WITH_INFO)
    {  
       printf("%d %c %c %c %c %c %d %c %d %c\n",id,select_type,table,type_,possible_keys,key,key_len,ref,row,extra);
    }

    



}

int main(int argc, char** argv)
{
    int nPrompt = SQL_DRIVER_NOPROMPT;
    int i;

    if (argc < 2 || strlen(argv[1]) == 0)
    {
        connString = (SQLCHAR *)"DSN=myodbc;UID=root;database=test";
    }
    else
        connString = (SQLCHAR *)argv[1];

    if (SQLAllocEnv(&hEnv) != SQL_SUCCESS)
    {
        fprintf(stderr, "Unable to allocate SQLHENV\n");
        return(1);
    }

    printf("Connect....\n");
    SQLAllocEnv(&hEnv);
//    CHECKRC( SQLSetEnvAttr(hEnv,SQL_ATTR_ODBC_VERSION,Version,0 ), "SQLSetEnvAttr()" );
    CHECKRC( SQLAllocConnect(hEnv, &hDbc), "SQLAllocConnect()" );
    CHECKRC( SQLDriverConnect(hDbc, (HWND)0, connString, SQL_NTS, connOut, 255, &szConnOut, nPrompt), "SQLDriverConnect()" );

    doDrop();
    doCreate();
    doTest();

    printf("Disconnect....\n");
    CHECKRC( SQLDisconnect(hDbc), "SQLDisconnect()" );
    CHECKRC( SQLFreeConnect(hDbc), "SQLFreeConnect()" );
    CHECKRC( SQLFreeEnv(hEnv), "SQLFreeEnv()" );

    return 0;
}

void CheckRC(SQLRETURN rc, char* msg, char* filename, int lineno)
{
#define MSG_LNG 512

    SQLCHAR     szSqlState[MSG_LNG];
    SQLINTEGER  pfNativeError;
    SQLCHAR     szErrorMsg[MSG_LNG];
    SQLSMALLINT pcbErrorMsg;
    SQLRETURN   ret = SQL_SUCCESS;

    int error = 0;

    if (rc != SQL_SUCCESS && rc != SQL_NO_DATA_FOUND)
    {
        if (rc != SQL_SUCCESS_WITH_INFO)
        {
            fprintf(stderr, "\nERROR (%s:%d): %s\n",
                    filename, lineno, msg);
            error = 1;
        }

        while (ret == SQL_SUCCESS || ret == SQL_SUCCESS_WITH_INFO)
        {
            ret = SQLError(hEnv, hDbc, hStmt,
                           szSqlState, &pfNativeError,
                           szErrorMsg, MSG_LNG,
                           &pcbErrorMsg);
            switch (ret)
            {
                case SQL_SUCCESS:  
                    if (rc == SQL_SUCCESS_WITH_INFO)
                    {
                        fprintf(stderr, "\nINFO: (%s:%d): %s\n",
                                filename, lineno, msg);
                    }
                    fprintf(stderr, 
                            "*** %s\n*** ODBC Code: %s, "
                            "Driver Code: %ld\n\n",
                            szErrorMsg, szSqlState, pfNativeError);
                    break;
                case SQL_NO_DATA_FOUND:
                    break;
                default:
                    fprintf(stderr,
                            "*** SQLError() failed with code=%d\n\n", ret);
                    break;
            }
        }
    }
    if (error) exit(1);
}