/**
 * Fuzz target for DiskANN CREATE TABLE config parsing.
 * Feeds fuzz data as the INDEXED BY diskann(...) option string.
 */
#include <stdint.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "sqlite-vec.h"
#include "sqlite3.h"
#include <assert.h>

int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
  if (size > 4096) return 0;  /* Limit input size */

  int rc;
  sqlite3 *db;
  sqlite3_stmt *stmt;

  rc = sqlite3_open(":memory:", &db);
  assert(rc == SQLITE_OK);
  rc = sqlite3_vec_init(db, NULL, NULL);
  assert(rc == SQLITE_OK);

  sqlite3_str *s = sqlite3_str_new(NULL);
  assert(s);
  sqlite3_str_appendall(s,
    "CREATE VIRTUAL TABLE v USING vec0("
    "emb float[64] INDEXED BY diskann(");
  sqlite3_str_appendf(s, "%.*s", (int)size, data);
  sqlite3_str_appendall(s, "))");
  const char *zSql = sqlite3_str_finish(s);
  assert(zSql);

  rc = sqlite3_prepare_v2(db, zSql, -1, &stmt, NULL);
  sqlite3_free((char *)zSql);
  if (rc == SQLITE_OK) {
    sqlite3_step(stmt);
  }
  sqlite3_finalize(stmt);
  sqlite3_close(db);
  return 0;
}