/*
    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 doTest()
{
    double d;
    SQLINTEGER len1;
    SQLRETURN   retcode;

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


    CHECKRC( SQLAllocStmt(hDbc, &hStmt), "SQLAllocStmt()" );
    CHECKRC( SQLExecDirect(hStmt, (SQLCHAR*)"USE TEST", SQL_NTS), "SQLExecDirect()" );
    CHECKRC( SQLExecDirect(hStmt, (SQLCHAR*)"DROP TABLE IF EXISTS TEST_DEC", SQL_NTS), "SQLExecDirect()" );
    CHECKRC( SQLExecDirect(hStmt, (SQLCHAR*)"CREATE TABLE TEST_DEC (D DECIMAL(11,2) DEFAULT 0)", SQL_NTS), "SQLExecDirect()" );
    CHECKRC( SQLExecDirect(hStmt, (SQLCHAR*)"INSERT INTO TEST_DEC VALUES (0.0)", SQL_NTS), "SQLExecDirect()" );
    CHECKRC( SQLExecDirect(hStmt, (SQLCHAR*)"CREATE OR REPLACE VIEW TEST_DEC_VIEW AS SELECT D AS D_VIEW FROM TEST_DEC", SQL_NTS), "SQLExecDirect()" );
    CHECKRC( SQLFreeStmt(hStmt, SQL_DROP), "SQLFreeStmt()" );


    printf("testing table...\n");
    CHECKRC( SQLAllocStmt(hDbc, &hStmt), "SQLAllocStmt()" );
    retcode = SQLExecDirect(hStmt, "SELECT ROUND(D,2) FROM TEST_DEC", SQL_NTS);
    if (retcode == SQL_SUCCESS || retcode == SQL_SUCCESS_WITH_INFO) 
    {
       SQLBindCol(hStmt, 1, SQL_C_DOUBLE, &d, 0, &len1);
      while (TRUE) 
      {
        CHECKRC(retcode = SQLFetch(hStmt),"SQLFetch()");
        if (retcode == SQL_SUCCESS || retcode == SQL_SUCCESS_WITH_INFO)
        {
          printf("d = %d \n", d);
        }
        else
        {
          break;
        }
      }
    }
   CHECKRC( SQLFreeStmt(hStmt, SQL_DROP), "SQLFreeStmt()" );

    printf("testing view...\n");
    CHECKRC( SQLAllocStmt(hDbc, &hStmt), "SQLAllocStmt()" );
    retcode = SQLExecDirect(hStmt, "SELECT ROUND(D_VIEW,2) FROM TEST_DEC_VIEW", SQL_NTS);
    if (retcode == SQL_SUCCESS || retcode == SQL_SUCCESS_WITH_INFO) 
    {
       SQLBindCol(hStmt, 1, SQL_C_DOUBLE, &d, 0, &len1);
      while (TRUE) 
      {
        CHECKRC(retcode = SQLFetch(hStmt),"SQLFetch()");
        if (retcode == SQL_SUCCESS || retcode == SQL_SUCCESS_WITH_INFO)
        {
          printf("d = %d \n", d);
        }
        else
        {
          break;
        }
      }
    }

   CHECKRC( SQLFreeStmt(hStmt, SQL_DROP), "SQLFreeStmt()" );
}


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

    if (argc < 2 || strlen(argv[1]) == 0)
    {
        connString = (SQLCHAR *)"DRIVER=MySQL Connector/ODBC v5;UID=root";
    }
    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()" );

    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);
}