const requireEngineDriver = require('../utility/requireEngineDriver');
const connectUtility = require('../utility/connectUtility');
const { getLogger } = require('dbgate-tools');
const exportDbModel = require('../utility/exportDbModel');

const logger = getLogger('analyseDb');

async function loadDatabase({ connection = undefined, systemConnection = undefined, driver = undefined, outputDir }) {
  logger.info(`Analysing database`);

  if (!driver) driver = requireEngineDriver(connection);
  const pool = systemConnection || (await connectUtility(driver, connection, 'read', { forceRowsAsObjects: true }));
  logger.info(`Connected.`);

  const dbInfo = await driver.analyseFull(pool);
  logger.info(`Analyse finished`);

  await exportDbModel(dbInfo, outputDir);
}

module.exports = loadDatabase;