#include <ring.h>
#include <stdio.h>
#include <string.h>

int main(int argc, char **argv) {
  struct ring_t buf;
  struct ring_t *res = ring_new(&buf, 20);

  if(res == NULL) {
    fprintf(stderr, "uh oh\n");
    return 1;
  }

  char *write_str = strdup("abcdefghijklmnopqrstuvwxyz");
  size_t len = ring_write(&buf, write_str, 26);

  if(len != 6) {
    fprintf(stderr, "what happened? (%zu)\n", len);
    return 1;
  }

  len = 5;
  char *read_str = ring_read(&buf, &len);

  if(len) {
    fprintf(stderr, "that's not good (%zu)\n", len);
    return 1;
  }

  printf("first read: %s\n", read_str);
  len = ring_write(&buf, write_str + 20, 6);

  if(len != 1) {
    fprintf(stderr, "you should probably fix this\n");
    return 1;
  }

  len = 10;
  read_str = ring_read(&buf, &len);

  if(len) {
    fprintf(stderr, "hmmmm\n");
    return 1;
  }

  printf("second read: %s\n", read_str);

  len = ring_write(&buf, write_str + 25, 1);
  len = ring_write(&buf, write_str, 26);

  printf("didn't write %zu characters\n", len);

  len = 20;
  read_str = ring_read(&buf, &len);

  printf("final read (20): %s\n", read_str);
  ring_del(&buf);

  return 0;
}

/*
struct ring_t *ring_new(struct ring_t *buf, size_t len);
size_t ring_write(struct ring_t *buf, char *str, size_t orig_len);
char *ring_read(struct ring_t *buf, size_t *len);
char *ring_readln(struct ring_t *buf, size_t *len);
void ring_del(struct ring_t *buf);
*/