//
// Case-based reasoner
//

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

#include "cbr.h"

struct cbr_s {
    char filename[64];
    char tablename[64];
    char command[2048];
    sqlite3 *db; 
    unsigned int num_columns;
};

int cbr_callback(void *notUsed, int argc, char **argv, char **azColName);

cbr cbr_create(char * _filename, char * _tablename, char * _cols[], unsigned int _len)
{
    cbr _cbr = (cbr) malloc(sizeof(struct cbr_s));

    // copy filename
    unsigned int i=0;
    do {
        _cbr->filename[i] = _filename[i];
    } while (_filename[i++] != '\0');

    // copy tablename
    i=0;
    do {
        _cbr->tablename[i] = _tablename[i];
    } while (_tablename[i++] != '\0');

    _cbr->db = NULL;
    _cbr->num_columns = _len;

    // create table
    strcpy(_cbr->command, "CREATE TABLE ");
    strcat(_cbr->command, _tablename);
    strcat(_cbr->command, "(");
    for (i=0; i<_len; i++) {
        strcat(_cbr->command, _cols[i]);
        strcat(_cbr->command, " FLOAT");
        if (i != _len-1)
            strcat(_cbr->command, ", ");
    }
    strcat(_cbr->command, ");");
    printf("command : %s\n", _cbr->command);

    // execute command


    return _cbr;
}

void cbr_free(cbr _cbr)
{
    // delete table here

    free(_cbr);
}

void cbr_print(cbr _cbr)
{
    printf("database %s, table %s:\n", _cbr->filename, _cbr->tablename);
}

//static
int cbr_callback(void *notUsed, int argc, char **argv, char **azColName)
{
    return 0;
}

int cbr_search(cbr _cbr, char *_names[], int * _ops, float *_vals, unsigned int _n, float *_retvals)
{
    // set up statement

    char* zErrMsg = NULL;
    //sqlite3_exec(_cbr->db, argv[2], callback, NULL, &zErrMsg);
    sqlite3_exec(_cbr->db, _cbr->command, cbr_callback, NULL, &zErrMsg);

    return 0;
}

int cbr_add_row(cbr _cbr, char *_cols[], float *_vals, unsigned int _len)
{
    return 0;
}