/**
 * The `invites` table: its row type and its guard.
 *
 * @module
 */

import type { SQLOutputValue } from "node:sqlite";

/** A row of the `invites` table. */
export interface InviteRow {
  /** The invite's token, which registering redeems. */
  token: string;
  /** The id of the user who made the invite. */
  inviter_id: string;
  /** When the invite was redeemed; null while unused. */
  used_at: string | null;
  /** When the invite was made. */
  created_at: string;
  /** Any other column the query selects. */
  [key: string]: SQLOutputValue;
}

/** Checks whether `obj` is a {@link InviteRow}. */
export function isInviteRow(
  obj: unknown,
): obj is InviteRow {
  return !!obj && typeof obj === "object" &&
    "token" in obj && typeof obj.token === "string" &&
    "inviter_id" in obj && typeof obj.inviter_id === "string" &&
    "created_at" in obj && typeof obj.created_at === "string" &&
    "used_at" in obj &&
    (obj.used_at === null || typeof obj.used_at === "string");
}