import { MssqlProvider } from 'libdashstore/providers/mssql';
import { BetterSqlite3Provider } from 'libdashstore/providers/better-sqlite3';
import env from '../config/env.js';

function getMssqlConfig() {
    const { server, database, user, password, port, encrypt, trustServerCertificate } = env.mssql;

    if (!server || !database || !user || !password) {
        throw new Error('MSSQL is not configured (MSSQL_SERVER, MSSQL_DATABASE, MSSQL_USER, MSSQL_PASSWORD required)');
    }

    return {
        server,
        database,
        user,
        password,
        port,
        storageDir: env.storageDir,
        pool: {
            max: 10,
            min: 0,
            idleTimeoutMillis: 30_000,
        },
        options: {
            encrypt,
            trustServerCertificate,
        },
    };
}

/**
 * Creates the configured (uninitialized) libdashstore provider from `.env`.
 * @returns {MssqlProvider | BetterSqlite3Provider}
 */
export function createProvider() {
    if (env.dbProvider === 'sqlite' || env.dbProvider === 'better-sqlite3') {
        return new BetterSqlite3Provider(env.sqlite);
    }
    return new MssqlProvider(getMssqlConfig(), { storageDir: env.storageDir });
}