#include "dbManager.h"


dbManager::dbManager(void)
{
}


dbManager::~dbManager(void)
{
}

int dbManager::wordcmp(const char* str1, const char* word, int *offset)
{
    unsigned int len = strlen(word);
    // returns 0 if equals
    if (memcmp (str1, word, len)==0)
    {
        if (offset!=NULL)
            *offset +=len;

        return 0;
    }
    // if not any of above
    return -1;
}

int dbManager::skipws(const char* str)
{
    int i = 0;
    while(str[i] == ' ')
    {
        i++;
    }
    // returns count of ws
    return i;
}

int dbManager::charfind(const char* str, char letter)
{
    int len = strlen(str);
    for (int i =0; i<len; i++)
    {
        if (str[i] == letter)
            return i;
    }
    // nie znaleziono
    return -1;
}

bool dbManager::TakeInt(const char* cmdline, int* x, int* offset)
{
    int end = charfind(cmdline, ',');
    if (end<0) // nie ma juz przecinka
    {
        end = charfind(cmdline, ')');
        if (end<0) // ani nawiasu
            return false;
    }

    char* strtonumbuff = (char*)malloc(sizeof(char)*end);
    for(int i=0; i<end; i++)
    {
        strtonumbuff[i]=cmdline[i];
    }
    strtonumbuff[end]=0;
    *x = atoi(strtonumbuff);
    //free(strtonumbuff);
    // moves offset after ',' or ')'
    if (offset!=NULL)
        *offset +=end+1;

    return true;
}

// ======public============

bool dbManager::ProcessCmd(const char* cmdline)
{
    int offset = skipws(cmdline); // obsluga ws na poczatku cmd
    if (wordcmp(cmdline+offset, "dzien dobry", &offset) == 0)
    {
        cout << "?\n";
    } else if (wordcmp(cmdline+offset, "koniec", &offset) == 0)
    {
        return false;
    } else if (wordcmp(cmdline+offset, "dodaj", &offset) == 0)
    {
        Add(cmdline+offset);
    }

    return true;
}

bool dbManager::Add(const char* cmdline)
{
    int offset = skipws(cmdline);

    if (wordcmp(cmdline+offset, "liczby", &offset) == 0)
    {
        offset += skipws(cmdline+offset); // obsluga ws

        // sprawdzanie czy nawias
        if (wordcmp(cmdline+offset, "(", &offset) ==0)
        {
            // sprawdzanie jakiego typu komorki sa w db i wczytanie ich
            int* x = new int;
            while(TakeInt(cmdline+offset, x, &offset))
            {
                cout << *x << endl;
            }
        }
        else
            cout << "cos zle z parametrami dodaj liczby\n";

    } else
        cout << "wpisales jakies gowno -.-\n";

    return true;
}