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

// ANSI escape sequences for producing the colors
#define PINK "\033[95m"
#define BLUE "\033[94m"
#define YELLOW "\033[93m"
#define GREEN "\033[92m"
#define RED "\033[91m"
#define ENDC "\033[0m"

int main(void) {
  DIR *dir;
  struct dirent *entry = NULL;
  struct stat entry_stat;
  char *file_name;
  char *path;

  // Opens the current directory we're in (man 3 opendir)
  dir = opendir(".");

  if (dir == NULL) {
      return EXIT_FAILURE;
  }

  // Reads each directory entry until we run out of entries (man 3 readdir)
  while ((entry = readdir(dir)) != NULL) {
    file_name = entry->d_name;
    
    // Concatenates "./" to the beginning of the file name, so that it
    // can be used with lstat() to retrieve information about the file
    path = (char *) malloc(sizeof(char) * (strlen(file_name) + 3));
    strcpy(path, "./");
    strcat(path, file_name);

    // Retrieves information about the file (man 2 lstat)
    lstat(path, &entry_stat);
    
    // Sets the color for the different types of files
    if (strcmp(file_name, ".") == 0 ||
	strcmp(file_name, "..") == 0) {
      printf("%s", BLUE);
    } else if (S_ISDIR(entry_stat.st_mode)) {
      printf("%s", PINK);
    } else {
      printf("%s", RED);
    }

    // Prints the file name
    printf("%s%s\n", file_name, ENDC);

  }

  return EXIT_SUCCESS;
}