OpChan/packages/react/README.md

@opchan/react

Lightweight React provider and hooks for building OpChan clients on top of @opchan/core.

Install

npm i @opchan/react @opchan/core react react-dom

Quickstart

Quickstart Provider (wagmi-only)

OpChan uses wagmi connectors for wallet management. The OpChanProvider already wraps WagmiProvider and React Query internally, so you can mount it directly:

import React from 'react';
import { OpChanProvider } from '@opchan/react';

const opchanConfig = {};

function App() {
  return (
    <OpChanProvider config={opchanConfig}>
      {/* your app */}
    </OpChanProvider>
  );
}

createRoot(document.getElementById('root')!).render(<App />);

Common usage

import { useForum } from '@opchan/react';

export function NewPostButton({ cellId }: { cellId: string }) {
  const { user, content, permissions } = useForum();

  const onCreate = async () => {
    if (!permissions.canPost) return;
    await content.createPost({ cellId, title: 'Hello', content: 'World' });
  };

  return (
    <button disabled={!permissions.canPost || !user.isAuthenticated} onClick={onCreate}>
      New post
    </button>
  );
}

import { useAuth, useUserDisplay } from '@opchan/react';

export function Connect() {
  const { currentUser, connect, disconnect, verifyOwnership } = useAuth();
  const display = useUserDisplay(currentUser?.address ?? '');

  return (
    <div>
      {currentUser ? (
        <>
          <span>{display.displayName}</span>
          <button onClick={() => verifyOwnership()}>Verify</button>
          <button onClick={() => disconnect()}>Disconnect</button>
        </>
      ) : (
        <>
      <button onClick={() => connect()}>
        Connect Wallet
      </button>
        </>
      )}
    </div>
  );
}

API

• Providers

• OpChanProvider: High-level provider that constructs an OpChanClient and wires wagmi + React Query.

  • Props:

    • config: OpChanClientConfig — core client configuration.
    • children: React.ReactNode.

  • Requirements: None — this provider already wraps WagmiProvider and QueryClientProvider internally.

  • AppKitWalletProvider: Wallet context provider (automatically included in OpChanProvider).

    • Provides wallet state and controls from AppKit.

  • ClientProvider: Low-level provider if you construct OpChanClient yourself.

    • Props: { client: OpChanClient; children: React.ReactNode }.

• Hooks

  • useForum() → { user, content, permissions, network } — convenience bundle of the hooks below.

  • useAuth() → session & identity actions

    • Data: currentUser, verificationStatus, isAuthenticated, delegationInfo.
    • Actions: connect(walletType: 'bitcoin' | 'ethereum'), disconnect(), verifyOwnership(), delegate(duration), delegationStatus(), clearDelegation(), updateProfile({ callSign?, displayPreference? }).

  • useContent() → forum data & actions

    • Data: cells, posts, comments, bookmarks, postsByCell, commentsByPost, cellsWithStats, userVerificationStatus, lastSync, pending helpers.
    • Actions: createCell({ name, description, icon? }), createPost({ cellId, title, content }), createComment({ postId, content }), vote({ targetId, isUpvote }), moderate.{post,unpost,comment,uncomment,user,unuser}(...), togglePostBookmark(post, cellId?), toggleCommentBookmark(comment, postId?), removeBookmark(bookmarkId), clearAllBookmarks(), refresh().

  • usePermissions() → permission checks

    • Booleans: canPost, canComment, canVote, canCreateCell, canDelegate.
    • Functions: canModerate(cellId), check(action, cellId?) → { allowed, reason }, reasons.

  • useNetwork() → connection state

    • Data: isConnected, statusMessage, issues, isHydrated, canRefresh.
    • Actions: refresh() — triggers a light data refresh via core.

  • useUIState(key, defaultValue, category?) → persisted UI state

    • Returns [value, setValue, { loading, error? }].
    • Categories: 'wizardStates' | 'preferences' | 'temporaryStates' (default 'preferences').

  • useUserDisplay(address) → identity details for any address

    • Returns { address, displayName, callSign?, ensName?, verificationStatus, displayPreference, lastUpdated, isLoading, error }.
    • Backed by a centralized identity cache; updates propagate automatically.

  • useClient() → access the underlying OpChanClient (advanced use only).

Notes

• Identity resolution, verification states, and display preferences are centralized and cached; useUserDisplay and useAuth.verifyOwnership() will keep store and local DB in sync.
• This package is UI-agnostic; pair with your component library of choice.

Runtime requirements

• Browser Buffer polyfill (for some crypto/wallet libs):

  import { Buffer } from 'buffer'
  if (!(window as any).Buffer) (window as any).Buffer = Buffer
  

• Config values you likely need to pass to OpChanProvider:
  • wakuConfig with contentTopic and reliableChannelId

License

MIT