#include <unistd.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>

struct log{
    struct tm date;
    char argument[10];
};

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

    if(argc<2){
        printf("You cannot run this program without arguments\n");
    return -1;
    }


    if(strcmp(argv[1],"-r")==0){


            if(argc!=2){
                printf("You cannot run this program with arguments\n");
                return -1;
            }


    }
    else if(strcmp(argv[1],"-w")==0){



            if(argc!=3){
                printf("You can run this program with only one argument\n");
                return -1;
            }

            char *argument;
            if(strlen(argv[2])>9){
                printf("This argument seems to be too long, we need to trim it!\n");
                argument=malloc(9*sizeof(char));
                strncpy(argument,argv[2],9);
                printf("Your argument after trimming is:%s\n",argument);
            }
            else{
                argument=argv[2];
                printf("Your argument is:%s\n",argument);
            }

            struct log* temp=(struct log*)malloc(sizeof(struct log));
            time_t current_time;
            time(&current_time);
            localtime_r(&current_time, &temp->date);
            strcpy(temp->argument,argument);


            char buffer[21];
            snprintf(buffer,sizeof(buffer),"%d.%d.%d.%d.%d.log",temp->date.tm_year+1900,temp->date.tm_mon+1,temp->date.tm_mday,temp->date.tm_hour,temp->date.tm_min);

            FILE* file_save=fopen(buffer,"ab");
            fwrite(temp,sizeof(struct log),1,file_save);
            fclose(file_save);


    }
    else{
        printf("Wrong argument provided!\n");
        return -1;
    }

    return 0;
}