#include <stdio.h>
#include <sys/stat.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <unistd.h>
#include <dirent.h>
#include <time.h>

/*GLOBAL VARIABLES*/

struct stat stat_buffer;
struct dirent directory;
char * file_adate = NULL;
char * file_mdate = NULL;
char * file_size = NULL;

/*METHOD DECLARATION*/

void Usage(){
//  printf("------USAGE------");
//  printf("filesearch [-ams] [filename] [-l] [pattern] ");
//  printf("-a   Time of last access. ");
//  printf("-m   Time of last data modification.");
//  printf("-s   For regular files, the file size in bytes."); 
//  printf("     For symbolic links, the length in bytes of the");
//  printf("     pathname contained in the symbolic link.");
//  prinft("-----------------");
}

void GetArguments(int argc, char **argv, char** switches, int* swc, char*** arguments, int* arc) {
  int k = 0;
  int l = 0;
  int i = 1;
  int j = 0;
  if(argc == 1)
  {
    Usage();
    return;
  }
  for (i = 1; i < argc; i++)
    if (argv[i][0] == '-') {
      (*swc) += strlen(argv[i]) - 1;
      (*arc)++;
    }
/////char * ptr_switches;
/////char * ptr_arguments;
  (*arc) = argc - 1 - (*arc);
  printf("GetArguments: NUMBER OF SWITCHES = %d NUMBER OF ARGUMENTS = %d\n", *swc, *arc);
 /*Upon successful completion with size not equal to 0, malloc() shall return a pointer to the allocated space. If size is 0, either a null pointer or a unique pointer that can be successfully passed to free() shall be returned. Otherwise, it shall return a null pointer and set errno to indicate the error.*/ 
  (*switches) = (char *) malloc( ( sizeof(char) * (*swc) ) + 1);
  
  if ((*switches)  == NULL){
    printf("ERROE ENCOUNTERED in (*switches) = (char*) malloc((sizeof(char) * (*swc)) + 1)");
    exit (1);
  }

  (*arguments) = (char**) malloc( ( sizeof(char *) * (*arc) ) + 1);
  
  if ((*arguments)  == NULL){
    printf("ERROE ENCOUNTERED in (*arguments) =  malloc(sizeof(char*) * (*arc))");
    exit (1);
  }

  (*switches)[ sizeof(char) * (*swc) ] = 0;
int J;
  for (i = 1; i < argc; i++){
    if (argv[i][0] == '-') {
    J = strlen(argv[i]) - 1;
      for (j = 0; j < J; j++)
        (*switches)[l++] = argv[i][j+1];
      } else
      (*arguments)[k++] = argv[i];
    }
  printf ("(*switches) =  %s, (*arguments) = %s\n", *switches,**arguments);
}

void PrintFileInfo(char * fn) {
	if(fn){
		printf("PrintFileInfo for %s\n", fn);
		if(stat(fn, &stat_buffer)== -1)
			perror("filesearch");
		if (file_mdate)
			printf("Time of last modification : %s\n", asctime(localtime(&stat_buffer.st_mtime)));
		if (file_adate)
			printf("Time of last access : %s\n", asctime(localtime(&stat_buffer.st_atime)));
		if (file_size)
			printf("Size of file : %d\n", (int)stat_buffer.st_size);
	}
}

/*END METHOD DECLARATION*/

int main(int argc, char **argv)
{
    int k = 0;
    char * switches;
    int swc = 0;
    char ** arguments;
    int arc = 0;
    setbuf(stdout, NULL);
    
    //if(stat("/home/samba/salardif/filesearch", &stat_buffer) == -1)
    //  perror("filesearch");
    GetArguments(argc, argv, &switches, &swc, &arguments, &arc);

    file_mdate = strrchr(switches, 'm');
    file_size = strrchr(switches, 's');
    file_adate = strrchr(switches, 'a');

    for (k = 0; k < arc; k++) {
      PrintFileInfo(arguments[k]);
    }
    return 0;
}