feat: initial commit at project root

internal/protocol/messages.js

@@ -0,0 +1,48 @@
+// Message type constants
+export const TypeAuthenticate  = 'authenticate';
+export const TypeCreateSession = 'create_session';
+export const TypeJoinSession   = 'join_session';
+export const TypeOffer         = 'offer';
+export const TypeAnswer        = 'answer';
+export const TypeICECandidate  = 'ice_candidate';
+export const TypeHeartbeat     = 'heartbeat';
+export const TypeEndCall       = 'end_call';
+
+export const TypeAuthenticated     = 'authenticated';
+export const TypeSessionCreated    = 'session_created';
+export const TypeSessionJoined     = 'session_joined';
+export const TypeParticipantJoined = 'participant_joined';
+export const TypeParticipantLeft   = 'participant_left';
+export const TypeCallTimeout       = 'call_timeout';
+export const TypeCallEnded         = 'call_ended';
+export const TypePong              = 'pong';
+export const TypeUnauthorized      = 'unauthorized';
+export const TypeError             = 'error';
+
+// Error codes
+export const ErrRideNotActive       = 'ride_not_active';
+export const ErrRideAlreadyStarted  = 'ride_already_started';
+export const ErrRideCancelled       = 'ride_cancelled';
+export const ErrSessionExists       = 'session_exists';
+export const ErrSessionNotFound     = 'session_not_found';
+export const ErrSessionFull         = 'session_full';
+export const ErrUnauthorizedUser    = 'unauthorized_user';
+export const ErrTokenExpired        = 'token_expired';
+export const ErrTokenInvalid        = 'token_invalid';
+export const ErrPayloadTooLarge     = 'payload_too_large';
+export const ErrRateLimited         = 'rate_limited';
+
+// Helper constructors for encoding server messages
+export const newAuthenticated = (userID) => JSON.stringify({ type: TypeAuthenticated, user_id: userID });
+export const newSessionCreated = (sessionID, rideID, expiresIn) => JSON.stringify({ type: TypeSessionCreated, session_id: sessionID, ride_id: rideID, expires_in: expiresIn });
+export const newSessionJoined = (sessionID, rideID) => JSON.stringify({ type: TypeSessionJoined, session_id: sessionID, ride_id: rideID });
+export const newParticipantJoined = (role) => JSON.stringify({ type: TypeParticipantJoined, role });
+export const newRelayOffer = (sdp) => JSON.stringify({ type: TypeOffer, sdp });
+export const newRelayAnswer = (sdp) => JSON.stringify({ type: TypeAnswer, sdp });
+export const newRelayICE = (candidate) => JSON.stringify({ type: TypeICECandidate, candidate });
+export const newParticipantLeft = (role) => JSON.stringify({ type: TypeParticipantLeft, role });
+export const newCallTimeout = (reason) => JSON.stringify({ type: TypeCallTimeout, reason });
+export const newCallEnded = (reason) => JSON.stringify({ type: TypeCallEnded, reason });
+export const newPong = () => JSON.stringify({ type: TypePong });
+export const newUnauthorized = (reason) => JSON.stringify({ type: TypeUnauthorized, reason });
+export const newError = (code, message) => JSON.stringify({ type: TypeError, code, message });