import {configureEnvVariables} from '@statechannels/devtools';
import Knex from 'knex';
import _ from 'lodash';

// eslint-disable-next-line import/order
import {DBAdmin} from '../src/db-admin/db-admin';

configureEnvVariables();

import {
  extractDBConfigFromWalletConfig,
  defaultTestWalletConfig,
  DatabaseConfiguration,
} from '../src/config';

const constructedKnexs: Knex[] = [];

/**
 *
 * @param databaseConfiguration
 *
 * returns a knex instance which is automatically destroyed after all jest tests have run
 */
export const constructKnex = (databaseConfiguration: Partial<DatabaseConfiguration>): Knex => {
  const knex = Knex(
    extractDBConfigFromWalletConfig(defaultTestWalletConfig({databaseConfiguration}))
  );
  constructedKnexs.push(knex);

  return knex;
};

export let testKnex: Knex;

beforeAll(async () => {
  testKnex = constructKnex({});
  await DBAdmin.truncateDataBaseFromKnex(testKnex);
});

afterAll(async () => {
  // We need to close the db connection after the test suite has run.
  // Otherwise, jest will not exit within the required one second after the test
  // suite has finished
  await Promise.all(constructedKnexs.map(async knex => knex.destroy()));
});