Add a Channel Connect Button

Build <Channel>ConnectButton for a new chat provider, mirroring Slack, MsTeams, and Telegram. The button lets a subscriber connect (open OAuth popup / deep link) and disconnect a channel, with loading + connected states.

Architecture (3 layers)

packages/js (SolidJS core)          packages/react (public wrapper)
─────────────────────────           ──────────────────────────────
<Channel>ConnectButton.tsx   ◄────  Default<Channel>ConnectButton.tsx  (Mounter → mountComponent)
  uses a data hook                  <Channel>ConnectButton.tsx          (memo → NovuUI → withRenderer)
  calls novu.channel*  SDK
registered in Renderer.tsx

The React component mounts the SolidJS component by name through novuUI.mountComponent. That name must be registered in packages/js/src/ui/components/Renderer.tsx.

Step 0 — Pick the connection model (do this first)

This single decision drives which SDK module, hook, and props you use.

If unsure: OAuth/app-install provider → connection-based; bot deep-link/token provider → endpoint-based.

File checklist

Copy the nearest sibling for your model (Slack/MS Teams = connection, Telegram = endpoint), then rename. Full templates: see reference.md.

Core — packages/js

• CREATE src/ui/icons/<Channel>Colored.tsx — brand icon (copy TelegramColored.tsx)
• CREATE src/ui/components/<channel>-connect-button/<Channel>ConnectButton.tsx
• CREATE (endpoint model only) src/ui/api/hooks/use<Channel>Connection.ts
• EDIT src/ui/components/Renderer.tsx — import it, add to novuComponents, add the name string to CHANNEL_COMPONENTS
• EDIT src/ui/components/index.ts — export * from './<channel>-connect-button/<Channel>ConnectButton'
• EDIT src/ui/index.ts — re-export <Channel>ConnectButtonProps in the type block

React — packages/react

• CREATE src/components/<channel>-connect-button/Default<Channel>ConnectButton.tsx
• CREATE src/components/<channel>-connect-button/<Channel>ConnectButton.tsx
• EDIT src/components/index.ts — export * from './<channel>-connect-button/<Channel>ConnectButton'
• EDIT src/index.ts — add the component to the value export block and <Channel>ConnectButtonProps to the type block

Usually NOT needed

• The channelConnections / channelEndpoints SDK modules already cover both models. Only add a new method under packages/js/src/channel-* if the provider needs a brand-new server call (rare). Backend lives in apps/api/src/app/channel-connections/.
• Never edit libs/internal-sdk (auto-generated).

Button behavior contract

Every connect button implements the same state machine — keep it identical:

• Initial load: <Show when={!loading()} fallback={<Loader/>}>; derive isConnected() from the hook's connection/endpoint, and isLoading() = loading() || actionLoading().
• Click when connected → disconnect(identifier) → onDisconnectSuccess() / onDisconnectError(err).
• Click when not connected → setActionLoading(true), get the URL, window.open(url, '_blank', 'noopener,noreferrer'), then start polling.
• Polling → fixed interval (2500ms, 120_000ms timeout) or backoff (see MS Teams). Use a one-shot committed flag / ref so only the first success-or-timeout fires side effects. Clear the timer in onCleanup.
• Resolve → success: mutate(found) + onConnectSuccess(identifier); timeout: onConnectError(new Error(...)).
• Appearance → reuse the shared keys channelConnectButtonContainer | Button | Inner | Icon | Label, each passed { connected } context. Icons go through IconRendererWrapper (keys channelConnect / channelConnected) with a fallback to <Channel>Colored / CheckCircleFill. Do not add new appearance keys — they are shared across all connect buttons.
• Base props → integrationIdentifier (required), subscriberId?, onConnectSuccess?, onConnectError?, onDisconnectSuccess?, onDisconnectError?, connectLabel?, connectedLabel?.

Conventions & gotchas

• The core is SolidJS, not React: signals over hooks, <Show> over ternaries, read props lazily (() => props.x), cleanup via onCleanup. The React layer is just a mounting shim.
• The name in mountComponent({ name: '<Channel>ConnectButton' }) must equal the key in novuComponents and be listed in CHANNEL_COMPONENTS, or it renders through the wrong path.
• <Channel>ConnectButtonProps is defined in the core and imported by React from @novu/js/ui — do not redefine it.
• Novu conventions: lowercase-dashed dirs, named exports, blank line before every return, no nested ternaries.
• These packages are published — new exports are a minor bump; keep prop changes additive/backward-compatible.

Build & verify

1. pnpm build (required after changing packages/).
2. Type-check + lint the touched files.
3. Manual test: add a page/tab in playground/nextjs (copy src/components/telegram-end-user-connect.tsx) that wraps <Channel>ConnectButton in <NovuProvider>, then connect/disconnect against a real integration.