fix: use the correct previous state when receiving a space (#143)

Author: pcarranzav

packages/hypergraph-react/src/HypergraphAppContext.tsx

@@ -354,9 +354,13 @@ export function HypergraphAppProvider({
             let state: SpaceEvents.SpaceState | undefined = undefined;
 
             for (const event of response.events) {
-              const applyEventResult = await Effect.runPromiseExit(SpaceEvents.applyEvent({ state: undefined, event }));
+              // Not sure why but type inference doesn't work here
+              const applyEventResult: Exit.Exit<SpaceEvents.SpaceState, SpaceEvents.ApplyError> =
+                await Effect.runPromiseExit(SpaceEvents.applyEvent({ state, event }));
               if (Exit.isSuccess(applyEventResult)) {
                 state = applyEventResult.value;
+              } else {
+                console.log('Failed to apply event', applyEventResult);
               }
             }
 

packages/hypergraph/src/space-events/apply-event.ts

@@ -1,10 +1,10 @@
 import { secp256k1 } from '@noble/curves/secp256k1';
 import { sha256 } from '@noble/hashes/sha256';
 import { Effect, Schema } from 'effect';
-import type { ParseError } from 'effect/ParseResult';
 import { canonicalize, stringToUint8Array } from '../utils/index.js';
 import { hashEvent } from './hash-event.js';
 import {
+  type ApplyError,
   InvalidEventError,
   SpaceEvent,
   type SpaceInvitation,
@@ -20,10 +20,7 @@ type Params = {
 
 const decodeSpaceEvent = Schema.decodeUnknownEither(SpaceEvent);
 
-export const applyEvent = ({
-  state,
-  event: rawEvent,
-}: Params): Effect.Effect<SpaceState, ParseError | VerifySignatureError | InvalidEventError> => {
+export const applyEvent = ({ state, event: rawEvent }: Params): Effect.Effect<SpaceState, ApplyError> => {
   const decodedEvent = decodeSpaceEvent(rawEvent);
   if (decodedEvent._tag === 'Left') {
     return decodedEvent.left;

packages/hypergraph/src/space-events/types.ts

@@ -1,3 +1,4 @@
+import type { ParseError } from 'effect/ParseResult';
 import * as Schema from 'effect/Schema';
 import { SignatureWithRecovery } from '../types.js';
 
@@ -101,3 +102,5 @@ export class VerifySignatureError {
 export class InvalidEventError {
   readonly _tag = 'InvalidEventError';
 }
+
+export type ApplyError = ParseError | VerifySignatureError | InvalidEventError;