import { createClient } from "edgedb";

type EdgeDB = {

  dsn?: string;

  password?: string;

  secretKey?: string;

  host?: string;

  port?: number;

  user?: string;

  database?: string;

  instanceName?: string;

}

export async function main(

  edgedb: EdgeDB,

  query: string = 'select "Hello, EdgeDB!"'

) {

validateEdgedb(edgedb);

const filteredConnectionDetails = Object.fromEntries(

  Object.entries(edgedb).filter(([key, value]) => value)

);

  const client = createClient(filteredConnectionDetails);

  const results = await client.query(query);

  return results;

}

function validateEdgedb(edgedb: EdgeDB) {

  if ('dsn' in edgedb) {

    if (!('password' in edgedb) && !('secretKey' in edgedb)) {

      throw new Error('When dsn is set, either password or secretKey is required.');

    }

  } 

  else { // dsn not set

    // Check for host, port, user, and database all set

    if ('host' in edgedb && 'port' in edgedb && 'user' in edgedb && 'database' in edgedb) {

      if (!('password' in edgedb) && !('secretKey' in edgedb)) {

        throw new Error('With host, port, user, and database set, either password or secretKey is required.');

      }

    } 

    else if ('instanceName' in edgedb && 'secretKey' in edgedb) {

      // These properties are set, so this condition is satisfied

    } 

    // Neither sets of properties are satisfied, throw an error

    else {

      throw new Error('If dsn is not set, either host, port, user, database and (password or secretKey) must all be set or both instanceName and secretKey must be set.');

    }

  }

}