import type { Sequelize, Transaction } from "sequelize";
import { QueryTypes } from "sequelize";

/** Identificadores internos; los valores externos siempre se parametrizan. */
export function sqlIdentifier(value: string) {
  return `\`${value.replaceAll("`", "``")}\``;
}

export async function writeResourceRow(
  database: Sequelize,
  table: string,
  row: Record<string, string | number | boolean | null>,
  transaction: Transaction
) {
  const columns = Object.keys(row);

  await database.query(
    `INSERT INTO ${sqlIdentifier(table)} (${columns.map(sqlIdentifier).join(",")}) VALUES (${columns.map((key) => `:${key}`).join(",")}) ON DUPLICATE KEY UPDATE ${columns.map((key) => `${sqlIdentifier(key)}=VALUES(${sqlIdentifier(key)})`).join(",")}`,
    { replacements: row, transaction }
  );
}

export async function readResourceRows<T extends object>(
  database: Sequelize,
  table: string,
  column: string,
  ids: readonly string[],
  transaction: Transaction
) {
  if (!ids.length) {
    return [];
  }

  return database.query<T>(
    `SELECT * FROM ${sqlIdentifier(table)} WHERE ${sqlIdentifier(column)} IN (:ids)`,
    { replacements: { ids }, type: QueryTypes.SELECT, transaction }
  );
}