import { FragmentToken } from "../tokens.js";
import type { IdentifierSqlToken, SqlFragmentToken } from "../types.js";
import { escapeIdentifier } from "../utilities/escapeIdentifier.js";
import { InvalidInputError } from "@slonik/errors";

export const createIdentifierSqlFragment = (token: IdentifierSqlToken): SqlFragmentToken => {
  const sql = token.names
    .map((identifierName) => {
      if (typeof identifierName !== "string") {
        throw new InvalidInputError("Identifier name array member type must be a string.");
      }

      return escapeIdentifier(identifierName);
    })
    .join(".");

  return {
    sql,
    type: FragmentToken,
    values: [],
  };
};