import { ConnectionConfig } from "mariadb";
import grabDbSSL from "./backend/grabDbSSL";
import { DsqlConnectionParam } from "../types";
import serverlessMysql from "serverless-mysql";
import { ConnectionOptions } from "tls";
import _ from "lodash";

/**
 * # Grab General CONNECTION for DSQL
 */
export default function grabDSQLConnectionConfig(
    param?: DsqlConnectionParam
): serverlessMysql.Config {
    const CONN_TIMEOUT = 10000;

    const config: serverlessMysql.Config = {
        config: {
            host: process.env.DSQL_DB_HOST,
            user: process.env.DSQL_DB_USERNAME,
            password: process.env.DSQL_DB_PASSWORD,
            database:
                param?.database ||
                (param?.noDb ? undefined : process.env.DSQL_DB_NAME),
            port: process.env.DSQL_DB_PORT
                ? Number(process.env.DSQL_DB_PORT)
                : undefined,
            charset: "utf8mb4",
            ssl: grabDbSSL(),
            connectTimeout: CONN_TIMEOUT,
            dateStrings: true,
            compress: true,
            decimalNumbers: true,
            // supportBigNumbers: true,
            // bigNumberStrings: false,
            // bigIntAsNumber: true,
            // metaAsArray: true,
            // socketTimeout: CONN_TIMEOUT,
            // ...param?.config,
        },
    };

    return _.merge(config, param?.config);
}