#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

/*
void error() {
  printf("\nImproper usage: goto[ keyword ]\n"
         "    Usage:\n"
         "       goto downloads\n"
         "       goto school\n"
         "       goto portfolio\n"
         "       goto -h\n"
         "       goto --help");
}

void help() {
  printf("\nQuickly navigate to saved bookmarks in the terminal.\n"
         "   Usage:\n"
         "       goto downloads\n"
         "       goto school\n"
         "       goto portfolio\n"
         "       goto -h\n"
         "       goto --help");
}
*/

void validateDir(char input[]) {
  char *bookmarksFile = strcat(getenv("HOME"), "/.bookmarks");
  // char *bookmarksFile = "/home/jashton/.bookmarks";
  FILE *f = fopen(bookmarksFile, "r");
  // Unable to access file.
  if (f == NULL) {
    printf("Error accessing file located at %s.\n", bookmarksFile);
    exit(2);
  } else {
    char cwd[PATH_MAX];
    if (getcwd(cwd, sizeof(cwd)) != NULL) {
      printf("cwd: %s\n", cwd);
    }

    char *line = NULL;
    size_t len = 0;
    ssize_t read;

    while ((read = getline(&line, &len, f)) != -1) {
      printf("%s", line);
      if (strstr(line, input) != NULL) {
        printf("%s", line);
        chdir(line);
        return;
      }
    }
  }
}

int main(int argc, char *argv[]) {
  // Invalid number of arguments.
  if (argc != 2) {
    // error();
    printf("error");
    return 1;
  }

  // Display help.
  if (strcmp(argv[1], "-h") == 0 || strcmp(argv[1], "--help") == 0)
    printf("help");
  else
    validateDir(argv[1]);

  return 0;
}