/*
 *----------------------------------------------------------------------
 *           "THE BEER-WARE LICENSE" (Revision 42):
 * <jeang3nie@HitchHiker-Linux.org> wrote this file. As long as you
 * retain this notice you can do whatever you want with this stuff. If
 * we meet some day, and you think this stuff is worth it, you can buy
 * me a beer in return.
 * ---------------------------------------------------------------------
 *            ______   _______  _          _________
 *           (  __  \ (  ___  )( (    /|( )\__   __/
 *           | (  \  )| (   ) ||  \  ( ||/    ) (
 *           | |   ) || |   | ||   \ | |      | |
 *           | |   | || |   | || (\ \) |      | |
 *           | |   ) || |   | || | \   |      | |
 *           | (__/  )| (___) || )  \  |      | |
 *           (______/ (_______)|/    )_)      )_(
 *
 *         _______  _______  _       _________ _______
 *        (  ____ )(  ___  )( \    /|\__   __/(  ____ \
 *        | (    )|| (   ) ||  \  ( |   ) (   | (    |/
 *        | (____)|| (___) ||   \ | |   | |   | |
 *        |  _____)|  ___  || (\ \) |   | |   | |
 *        | (      | (   ) || | \   |   | |   | |
 *        | )      | )   ( || )  \  |___) (___| (____|\
 *        |/       |/     \||/    \_)\_______/(_______/
 *
 */

#define _GNU_SOURCE

#include <dirent.h>  // opendir, rewinddir, readdir
#include <stdio.h>   // fopen, fclose, fwrite
#include <stdlib.h>  // exit, srand
#include <string.h>  // strncat, strcmp, strdup
#include <time.h>    // time

#include "config.h"

int main(int argc, char *argv[]) {
  int n = 0, i = 0;
  DIR *d;
  struct dirent *dir;
  d = opendir(datadir);

  // Determine the number of files
  while ((dir = readdir(d)) != NULL) {
    n++;
  }
  rewinddir(d);

  char *filesList[n - 2]; // subtract two because of . and ..

  // Put file names into the array
  while ((dir = readdir(d)) != NULL) {
    if (strcmp(dir->d_name, ".") && strcmp(dir->d_name, "..")) {
      filesList[i] = strdup(dir->d_name);
      i++;
    }
  }
  rewinddir(d);

  char *data = strdup(datadir);
  time_t t;

  srand((unsigned)time(&t));

  int m = rand() % n;
  strncat(data, filesList[m], 4);
  FILE *fp;
  char *line = NULL;
  size_t len = 0;
  ssize_t nread;
  // Open file
  fp = fopen(data, "r");
  if (fp == NULL) {
    perror("fopen");
    exit(EXIT_FAILURE);
  }

  // Read contents from file
  while ((nread = getline(&line, &len, fp)) != -1) {
    fwrite(line, nread, 1, stdout);
  }

  free(line);

  fclose(fp);
  return 0; // I am still considering changing this to 42
}