//SO IS1 222B LAB07
//Grzegorz Muth
//[email protected]
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <fcntl.h>
#include <time.h>

void str_copy(char *to, const char *from)
{
    while(*to++ = *from++);
}

int str_len(char *s)
{
    int i = 0;
    while(*s++ != '\0')
        i++;

    return i;
}

void str_cut(char *s, size_t n)
{
    int i;

    for(i = 0; i < n; i++)
        *s++;

    *s = '\0';
}

char int_to_char(int n)
{
    char result;
    while(n != 0)
    {
        result += n;

    }
    n + 48;
    return result;

}

struct log {
    struct tm date; // czas
    char argument[10]; // napisz argumentu wywołania
};

int main(int argc, char *argv[]){

    if(argc == 1)
        exit(1);

    int opt;
    struct log obiekcik;

    time_t ptr;
    time(&ptr);
    char* rezultat;

    int handle;
    int ile;
    int wsk = 0;
    int len;


    while((opt = getopt(argc, argv, "rw:")) != -1)
    {
        switch(opt)
        {
            case 'w':

                localtime_r(&ptr, &obiekcik.date);
                printf("%d\n", obiekcik.date.tm_mon + 1);

                len = str_len(argv[2]);
                if(len < 9)
                    str_cut(argv[2], len);
                else
                {
                    str_cut(argv[2], 9);
                    len = 9;
                }

                str_copy(obiekcik.argument, argv[2]);
                printf("%s\n", obiekcik.argument);
                char name[20];
                char a[5];

                //sprintf(obiekcik.date.tm_year + 1900, a, 10);
                //str_copy(name, a);
                //int_to_char(obiekcik.date.tm_year + 1900, a);
                ile = obiekcik.date.tm_year + 1900;
                wsk++;
                while ( ile / 10 > 0)
                {
                    wsk++;
                    ile = ile/10;

                }
                sprintf(a, "%d", obiekcik.date.tm_year + 1900);
                str_copy(name, a);
                str_copy(&name[wsk], ".");



                sprintf(a, "%d", obiekcik.date.tm_mon + 1);
                //printf("to a %s\n", a);
                str_copy(&name[++wsk], a);
                ile = obiekcik.date.tm_mon + 1;
                wsk++;
                while ( ile / 10 > 0)
                {
                    wsk++;
                    ile = ile/10;
                }
                str_copy(&name[wsk], ".");



                sprintf(a, "%d", obiekcik.date.tm_mday);
                //printf("to a %s\n", a);
                str_copy(&name[++wsk], a);
                ile = obiekcik.date.tm_mday;
                wsk++;
                while ( ile / 10 > 0)
                {
                    wsk++;
                    ile = ile/10;
                }
                str_copy(&name[wsk], ".");



                sprintf(a, "%d", obiekcik.date.tm_hour);
                //printf("to a %s\n", a);
                str_copy(&name[++wsk], a);
                ile = obiekcik.date.tm_hour;
                wsk++;
                while ( ile / 10 > 0)
                {
                    wsk++;
                    ile = ile/10;
                }
                str_copy(&name[wsk], ".");


                sprintf(a, "%d", obiekcik.date.tm_min);
                //printf("to a %s\n", a);
                str_copy(&name[++wsk], a);
                ile = obiekcik.date.tm_min;
                wsk++;
                while ( ile / 10 > 0)
                {
                    wsk++;
                    ile = ile/10;
                }
                str_copy(&name[wsk], ".");

                str_copy(&name[++wsk], "txt");


                /*str_copy(name[5], itoa(obiekcik.date.tm_mon + 1));
                str_copy(name[7], ".");
                str_copy(name[, itoa(obiekcik.date.tm_mday));
                str_copy(name[, ".");
                str_copy(name, itoa(obiekcik.date.tm_hour));
                str_copy(name, ".");
                str_copy(name, itoa(obiekcik.date.tm_min));
                str_copy(name, ".");
                str_copy(name, "log");*/

                //printf("%s\n", name);

                handle = open(name, O_RDWR | O_CREAT, S_IRWXU);
                if(handle >= 0)
                {
                    //read(0, &input, 1);
                    lseek(handle, 0, SEEK_END);
                    write(handle, &obiekcik.argument, str_len(obiekcik.argument));
                    write(handle, "\n", sizeof(char));
                    write(handle, &name, str_len(name) - 4);
                    //write(handle, &obiekcik.date, sizeof(obiekcik.date));
                    write(handle, "\n", sizeof(char));
                }
                close(handle);

                /*handle = open("msg.txt", O_RDWR | O_CREAT, S_IRWXU);
                if(handle >= 0)
                {
                    read(0, &input, 1);
                    write(handle, &input, sizeof(input));
                }
                close(handle);*/


                break;
            case 'r':











                break;
            default:
                break;


        }
    }


    return 0;
}