<?php

    namespace Socialbox\Classes\StandardMethods\Core;

    use Exception;
    use InvalidArgumentException;
    use Socialbox\Abstracts\Method;
    use Socialbox\Enums\ReservedUsernames;
    use Socialbox\Enums\StandardError;
    use Socialbox\Exceptions\Standard\StandardException;
    use Socialbox\Interfaces\SerializableInterface;
    use Socialbox\Objects\ClientRequest;
    use Socialbox\Objects\PeerAddress;
    use Socialbox\Objects\RpcRequest;
    use Socialbox\Socialbox;

    class ResolvePeer extends Method
    {

        /**
         * @inheritDoc
         */
        public static function execute(ClientRequest $request, RpcRequest $rpcRequest): ?SerializableInterface
        {
            // Check if the required 'peer' parameter is set.
            if(!$rpcRequest->containsParameter('peer'))
            {
                return $rpcRequest->produceError(StandardError::RPC_INVALID_ARGUMENTS, "Missing 'peer' parameter");
            }

            // Parse the peer address
            try
            {
                $peerAddress = PeerAddress::fromAddress($rpcRequest->getParameter('peer'));
            }
            catch(InvalidArgumentException $e)
            {
                throw new StandardException('Peer Address Error: ' . $e->getMessage(), StandardError::RPC_INVALID_ARGUMENTS, $e);
            }

            // Check if host is making the request & the identifier is not empty
            $identifyAs = null;
            if($request->getPeer()->getUsername() == ReservedUsernames::HOST && $request->getIdentifyAs() != null)
            {
                $identifyAs = $request->getIdentifyAs();
            }

            // Resolve the peer using the server's peer resolver, this will resolve both internal peers and external peers
            try
            {
                return $rpcRequest->produceResponse(Socialbox::resolvePeer($peerAddress, $identifyAs));
            }
            catch(Exception $e)
            {
                throw new StandardException(sprintf('There was an error while trying to resolve the peer %s: %s', $peerAddress, $e->getMessage()), StandardError::RESOLUTION_FAILED, $e);
            }
        }
    }