Add CodeNomad plugin bridge for opencode

packages/server/src/index.ts

@@ -122,22 +122,6 @@ async function main() {
   logger.info({ options }, "Starting CodeNomad CLI server")
 
   const eventBus = new EventBus(eventLogger)
-  const configStore = new ConfigStore(options.configPath, eventBus, configLogger)
-  const binaryRegistry = new BinaryRegistry(configStore, eventBus, configLogger)
-  const workspaceManager = new WorkspaceManager({
-    rootDir: options.rootDir,
-    configStore,
-    binaryRegistry,
-    eventBus,
-    logger: workspaceLogger,
-  })
-  const fileSystemBrowser = new FileSystemBrowser({ rootDir: options.rootDir, unrestricted: options.unrestrictedRoot })
-  const instanceStore = new InstanceStore()
-  const instanceEventBridge = new InstanceEventBridge({
-    workspaceManager,
-    eventBus,
-    logger: logger.child({ component: "instance-events" }),
-  })
 
   const serverMeta: ServerMeta = {
     httpBaseUrl: `http://${options.host}:${options.port}`,
@@ -150,6 +134,24 @@ async function main() {
     addresses: [],
   }
 
+  const configStore = new ConfigStore(options.configPath, eventBus, configLogger)
+  const binaryRegistry = new BinaryRegistry(configStore, eventBus, configLogger)
+  const workspaceManager = new WorkspaceManager({
+    rootDir: options.rootDir,
+    configStore,
+    binaryRegistry,
+    eventBus,
+    logger: workspaceLogger,
+    getServerBaseUrl: () => serverMeta.httpBaseUrl,
+  })
+  const fileSystemBrowser = new FileSystemBrowser({ rootDir: options.rootDir, unrestricted: options.unrestrictedRoot })
+  const instanceStore = new InstanceStore()
+  const instanceEventBridge = new InstanceEventBridge({
+    workspaceManager,
+    eventBus,
+    logger: logger.child({ component: "instance-events" }),
+  })
+
   const releaseMonitor = startReleaseMonitor({
     currentVersion: packageJson.version,
     logger: logger.child({ component: "release-monitor" }),

packages/server/src/plugins/channel.ts

@@ -0,0 +1,55 @@
+import type { FastifyReply } from "fastify"
+import type { Logger } from "../logger"
+
+export interface PluginOutboundEvent {
+  type: string
+  properties?: Record<string, unknown>
+}
+
+interface ClientConnection {
+  reply: FastifyReply
+  workspaceId: string
+}
+
+export class PluginChannelManager {
+  private readonly clients = new Set<ClientConnection>()
+
+  constructor(private readonly logger: Logger) {}
+
+  register(workspaceId: string, reply: FastifyReply) {
+    const connection: ClientConnection = { workspaceId, reply }
+    this.clients.add(connection)
+    this.logger.debug({ workspaceId }, "Plugin SSE client connected")
+
+    let closed = false
+    const close = () => {
+      if (closed) return
+      closed = true
+      this.clients.delete(connection)
+      this.logger.debug({ workspaceId }, "Plugin SSE client disconnected")
+    }
+
+    return { close }
+  }
+
+  send(workspaceId: string, event: PluginOutboundEvent) {
+    for (const client of this.clients) {
+      if (client.workspaceId !== workspaceId) continue
+      this.write(client.reply, event)
+    }
+  }
+
+  broadcast(event: PluginOutboundEvent) {
+    for (const client of this.clients) {
+      this.write(client.reply, event)
+    }
+  }
+
+  private write(reply: FastifyReply, event: PluginOutboundEvent) {
+    try {
+      reply.raw.write(`data: ${JSON.stringify(event)}\n\n`)
+    } catch (error) {
+      this.logger.warn({ err: error }, "Failed to write plugin SSE event")
+    }
+  }
+}

packages/server/src/plugins/handlers.ts

@@ -0,0 +1,62 @@
+import type { EventBus } from "../events/bus"
+import type { WorkspaceManager } from "../workspaces/manager"
+import type { Logger } from "../logger"
+import type { PluginOutboundEvent } from "./channel"
+
+export interface PluginInboundEvent {
+  type: string
+  properties?: Record<string, unknown>
+}
+
+interface HandlerDeps {
+  workspaceManager: WorkspaceManager
+  eventBus: EventBus
+  logger: Logger
+}
+
+export function handlePluginEvent(workspaceId: string, event: PluginInboundEvent, deps: HandlerDeps) {
+  switch (event.type) {
+    case "codenomad.pong":
+      deps.logger.debug({ workspaceId, properties: event.properties }, "Plugin pong received")
+      return
+
+    case "opencode.session.idle": {
+      const workspace = deps.workspaceManager.get(workspaceId)
+      const title = workspace?.name || workspace?.path?.split(/[\\/]/).filter(Boolean).pop() || "CodeNomad"
+
+      const sessionId = readString(event.properties?.sessionID)
+      const message = sessionId ? `Session ${sessionId} is idle` : "Session is idle"
+
+      deps.eventBus.publish({
+        type: "instance.event",
+        instanceId: workspaceId,
+        event: {
+          type: "tui.toast.show",
+          properties: {
+            title,
+            message,
+            variant: "info",
+            duration: 8000,
+          },
+        },
+      })
+      return
+    }
+
+    default:
+      deps.logger.debug({ workspaceId, eventType: event.type }, "Unhandled plugin event")
+  }
+}
+
+export function buildPingEvent(): PluginOutboundEvent {
+  return {
+    type: "codenomad.ping",
+    properties: {
+      ts: Date.now(),
+    },
+  }
+}
+
+function readString(value: unknown): string | undefined {
+  return typeof value === "string" && value.trim() ? value : undefined
+}

packages/server/src/server/http-server.ts

@@ -18,6 +18,7 @@ import { registerFilesystemRoutes } from "./routes/filesystem"
 import { registerMetaRoutes } from "./routes/meta"
 import { registerEventRoutes } from "./routes/events"
 import { registerStorageRoutes } from "./routes/storage"
+import { registerPluginRoutes } from "./routes/plugin"
 import { ServerMeta } from "../api-types"
 import { InstanceStore } from "../storage/instance-store"
 
@@ -110,6 +111,7 @@ export function createHttpServer(deps: HttpServerDeps) {
     eventBus: deps.eventBus,
     workspaceManager: deps.workspaceManager,
   })
+  registerPluginRoutes(app, { workspaceManager: deps.workspaceManager, eventBus: deps.eventBus, logger: proxyLogger })
   registerInstanceProxyRoutes(app, { workspaceManager: deps.workspaceManager, logger: proxyLogger })
 
 

packages/server/src/server/routes/plugin.ts

@@ -0,0 +1,75 @@
+import { FastifyInstance } from "fastify"
+import { z } from "zod"
+import type { WorkspaceManager } from "../../workspaces/manager"
+import type { EventBus } from "../../events/bus"
+import type { Logger } from "../../logger"
+import { PluginChannelManager } from "../../plugins/channel"
+import { buildPingEvent, handlePluginEvent } from "../../plugins/handlers"
+
+interface RouteDeps {
+  workspaceManager: WorkspaceManager
+  eventBus: EventBus
+  logger: Logger
+}
+
+const PluginEventSchema = z.object({
+  type: z.string().min(1),
+  properties: z.record(z.unknown()).optional(),
+})
+
+export function registerPluginRoutes(app: FastifyInstance, deps: RouteDeps) {
+  const channel = new PluginChannelManager(deps.logger.child({ component: "plugin-channel" }))
+
+  app.get<{ Params: { id: string } }>("/workspaces/:id/plugin/events", (request, reply) => {
+    const workspace = deps.workspaceManager.get(request.params.id)
+    if (!workspace) {
+      reply.code(404).send({ error: "Workspace not found" })
+      return
+    }
+
+    reply.raw.setHeader("Content-Type", "text/event-stream")
+    reply.raw.setHeader("Cache-Control", "no-cache")
+    reply.raw.setHeader("Connection", "keep-alive")
+    reply.raw.flushHeaders?.()
+    reply.hijack()
+
+    const registration = channel.register(request.params.id, reply)
+
+    const heartbeat = setInterval(() => {
+      channel.send(request.params.id, buildPingEvent())
+    }, 15000)
+
+    const close = () => {
+      clearInterval(heartbeat)
+      registration.close()
+      reply.raw.end?.()
+    }
+
+    request.raw.on("close", close)
+    request.raw.on("error", close)
+  })
+
+  const handleWildcard = async (request: any, reply: any) => {
+    const workspaceId = request.params.id as string
+    const workspace = deps.workspaceManager.get(workspaceId)
+    if (!workspace) {
+      reply.code(404).send({ error: "Workspace not found" })
+      return
+    }
+
+    const suffix = (request.params["*"] as string | undefined) ?? ""
+    const normalized = suffix.replace(/^\/+/, "")
+
+    if (normalized === "event" && request.method === "POST") {
+      const parsed = PluginEventSchema.parse(request.body ?? {})
+      handlePluginEvent(workspaceId, parsed, { workspaceManager: deps.workspaceManager, eventBus: deps.eventBus, logger: deps.logger })
+      reply.code(204).send()
+      return
+    }
+
+    reply.code(404).send({ error: "Unknown plugin endpoint" })
+  }
+
+  app.all("/workspaces/:id/plugin/*", handleWildcard)
+  app.all("/workspaces/:id/plugin", handleWildcard)
+}

packages/server/src/workspaces/manager.ts

@@ -20,6 +20,7 @@ interface WorkspaceManagerOptions {
   binaryRegistry: BinaryRegistry
   eventBus: EventBus
   logger: Logger
+  getServerBaseUrl: () => string
 }
 
 interface WorkspaceRecord extends WorkspaceDescriptor {}
@@ -108,6 +109,8 @@ export class WorkspaceManager {
     const environment = {
       ...userEnvironment,
       OPENCODE_CONFIG_DIR: this.opencodeConfigDir,
+      CODENOMAD_INSTANCE_ID: id,
+      CODENOMAD_BASE_URL: this.options.getServerBaseUrl(),
     }
 
     try {