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On top of that mirror the connection exposes\n * steering (POST /steer) and an event subscription used by the attach\n * side-panel — both share the single /events stream; no second SSE\n * connection is ever opened.\n *\n * The connection is best-effort by design — a connect failure or a later\n * drop logs a warning and never blocks (or crashes) the main agent. At most\n * one SSE connection (to /events) is open at any time.\n */\n\nimport { type TaskAgentState, type TaskStatus, taskStore } from \"./task-store.js\";\n\n/** Shape of GET /status: coarse per-role status keyed by role name. */\nexport type TeamStatusSnapshot = Record<string, { status?: string; lastEventType?: string }>;\n\n/** One frame of GET /events: a hoocode AgentEvent tagged with its producer. */\nexport interface TeamViewEvent {\n\ttype: string;\n\trole: string;\n\tagentId?: string;\n\tts?: number;\n\ttoolName?: string;\n\targs?: unknown;\n\tisError?: boolean;\n\t/** Streaming assistant-message delta carried by message_update events. */\n\tassistantMessageEvent?: { type?: string; delta?: string };\n\tmessage?: {\n\t\trole?: string;\n\t\terrorMessage?: string;\n\t\tusage?: { input?: number; output?: number; cost?: { total?: number } };\n\t};\n\t/** Task lifecycle fields carried by task_* events from the orchestrator. */\n\ttaskId?: string;\n\t/** Approval gate carried by task_paused. */\n\tquestion?: string;\n\toptions?: string[];\n\t/** Answer carried by task_resumed. */\n\tchosenOption?: string;\n\t/** \"done\" | \"error\" on task_finished. */\n\tstatus?: string;\n\t/** Run id carried by dag_complete / dag_failed. */\n\trunId?: string;\n}\n\n/** One unanswered approval gate from GET /tasks/pending. */\nexport interface TeamPendingApproval {\n\ttaskId: string;\n\tquestion: string;\n\toptions: string[];\n}\n\n/** hooteams AgentStatus word → task panel agent state. */\nfunction stateFromStatus(status: string | undefined): TaskAgentState {\n\tswitch (status) {\n\t\tcase \"idle\":\n\t\t\treturn \"idle\";\n\t\tcase \"thinking\":\n\t\tcase \"streaming\":\n\t\t\treturn \"active\";\n\t\tcase \"tool\":\n\t\t\treturn \"running\";\n\t\tcase \"done\":\n\t\t\treturn \"done\";\n\t\tcase \"error\":\n\t\t\treturn \"failed\";\n\t\tcase \"paused\":\n\t\t\treturn \"waiting\";\n\t\tdefault:\n\t\t\treturn \"idle\";\n\t}\n}\n\nfunction taskStatusFromState(state: TaskAgentState): TaskStatus {\n\tswitch (state) {\n\t\tcase \"done\":\n\t\t\treturn \"done\";\n\t\tcase \"failed\":\n\t\t\treturn \"failed\";\n\t\tcase \"cancelled\":\n\t\t\treturn \"cancelled\";\n\t\tcase \"idle\":\n\t\t\t// Idle is settled, not queued: a \"pending\" task here would survive every\n\t\t\t// taskStore.reset() and pin the pane at \"working\" for the whole session.\n\t\t\treturn \"done\";\n\t\tdefault:\n\t\t\treturn \"in_progress\";\n\t}\n}\n\n/** Only these states represent activity worth a task row of its own. */\nfunction stateWarrantsTask(state: TaskAgentState): boolean {\n\treturn state === \"active\" || state === \"running\" || state === \"failed\" || state === \"waiting\";\n}\n\n/**\n * Maps team status snapshots and TeamEvents onto task-store patches.\n *\n * Each role owns one roster entry (id `team:<role>`) and at most one task whose\n * title tracks the role's latest activity. Tasks exist only while a role is\n * actually doing something (active/running, or failed so the error is visible);\n * idle roles keep their roster entry but no task — the panel's teams lens\n * renders them as placeholder groups, so a quiet team reads as an idle roster\n * instead of pinning the pane at \"working\". Entries are re-created on demand\n * because taskStore.reset() wipes finished tasks between user turns.\n */\nexport class TeamViewMapper {\n\tprivate readonly store: typeof taskStore;\n\tprivate readonly taskIds = new Map<string, number>();\n\n\tconstructor(store: typeof taskStore = taskStore) {\n\t\tthis.store = store;\n\t}\n\n\t/** Register roles from a GET /status snapshot. */\n\tapplyStatus(snapshot: TeamStatusSnapshot): void {\n\t\tfor (const [role, info] of Object.entries(snapshot)) {\n\t\t\tconst state = stateFromStatus(info?.status);\n\t\t\tthis.ensureRole(role, state, info?.lastEventType ?? \"connected\");\n\t\t\tthis.patchRole(role, state);\n\t\t}\n\t}\n\n\t/** Map one TeamEvent from GET /events onto the store. */\n\tapplyEvent(event: TeamViewEvent): void {\n\t\tif (!event || typeof event.role !== \"string\" || event.role.length === 0) return;\n\t\t// Dag settlement events are tagged role=\"orchestrator\" — they describe\n\t\t// the run, not a member, and must not create a phantom roster entry.\n\t\tif (event.type === \"dag_complete\" || event.type === \"dag_failed\") return;\n\t\tconst role = event.role;\n\t\tswitch (event.type) {\n\t\t\tcase \"agent_start\":\n\t\t\tcase \"turn_start\":\n\t\t\t\tthis.ensureRole(role, \"active\", \"thinking\");\n\t\t\t\tthis.patchRole(role, \"active\", \"thinking\");\n\t\t\t\tbreak;\n\t\t\tcase \"message_start\":\n\t\t\tcase \"message_update\":\n\t\t\tcase \"message_end\":\n\t\t\t\tthis.ensureRole(role, \"active\", \"responding\");\n\t\t\t\tthis.patchRole(role, \"active\");\n\t\t\t\tbreak;\n\t\t\tcase \"tool_execution_start\":\n\t\t\t\tthis.ensureRole(role, \"running\", `tool: ${event.toolName ?? \"?\"}`);\n\t\t\t\tthis.patchRole(role, \"running\", `tool: ${event.toolName ?? \"?\"}`);\n\t\t\t\tbreak;\n\t\t\tcase \"tool_execution_end\":\n\t\t\t\tthis.ensureRole(role, \"active\", \"thinking\");\n\t\t\t\tthis.patchRole(role, \"active\", \"thinking\");\n\t\t\t\tbreak;\n\t\t\tcase \"turn_end\":\n\t\t\t\tif (event.message?.role === \"assistant\" && event.message.errorMessage) {\n\t\t\t\t\tthis.ensureRole(role, \"failed\", \"error\");\n\t\t\t\t\tthis.patchRole(role, \"failed\", \"error\");\n\t\t\t\t}\n\t\t\t\tbreak;\n\t\t\tcase \"agent_end\": {\n\t\t\t\t// A failed run stays failed; a paused run (waiting on an approval gate)\n\t\t\t\t// stays waiting — hooteams mirrors agent_end right after task_paused, so\n\t\t\t\t// without this guard the gate's \"waiting\" state would flip to idle and the\n\t\t\t\t// roster would read as done while the AskOptions pane is still open.\n\t\t\t\t// agent_end only marks clean completions (mirrors hooteams' own tracking).\n\t\t\t\tconst current = this.store.agents().find((a) => a.id === this.agentId(role))?.state;\n\t\t\t\tif (current !== \"failed\" && current !== \"waiting\") {\n\t\t\t\t\tthis.ensureRole(role, \"done\", \"idle\");\n\t\t\t\t\tthis.patchRole(role, \"done\", \"idle\");\n\t\t\t\t}\n\t\t\t\tbreak;\n\t\t\t}\n\t\t\tcase \"task_started\":\n\t\t\t\tthis.ensureRole(role, \"active\", `task: ${event.taskId ?? \"?\"}`);\n\t\t\t\tthis.patchRole(role, \"active\", `task: ${event.taskId ?? \"?\"}`);\n\t\t\t\tbreak;\n\t\t\tcase \"task_paused\": {\n\t\t\t\tconst title = `awaiting approval: ${event.question ?? \"?\"}`;\n\t\t\t\tthis.ensureRole(role, \"waiting\", title);\n\t\t\t\tthis.patchRole(role, \"waiting\", title);\n\t\t\t\tbreak;\n\t\t\t}\n\t\t\tcase \"task_resumed\":\n\t\t\t\tthis.ensureRole(role, \"active\", `task: ${event.taskId ?? \"?\"}`);\n\t\t\t\tthis.patchRole(role, \"active\", `task: ${event.taskId ?? \"?\"}`);\n\t\t\t\tbreak;\n\t\t\tcase \"task_finished\": {\n\t\t\t\tconst state = event.status === \"error\" ? \"failed\" : \"done\";\n\t\t\t\tthis.ensureRole(role, state, state === \"failed\" ? \"error\" : \"idle\");\n\t\t\t\tthis.patchRole(role, state, state === \"failed\" ? \"error\" : \"idle\");\n\t\t\t\tbreak;\n\t\t\t}\n\t\t\tdefault:\n\t\t\t\t// Unknown event types still prove the role exists.\n\t\t\t\tthis.ensureRole(role, \"idle\", event.type);\n\t\t\t\tbreak;\n\t\t}\n\t}\n\n\tprivate agentId(role: string): string {\n\t\treturn `team:${role}`;\n\t}\n\n\t/**\n\t * Make sure the role's roster entry exists, plus its task when the state\n\t * warrants one (reset() may have dropped both). Idle/done states never\n\t * create a task — only patch one that live activity already opened.\n\t */\n\tprivate ensureRole(role: string, state: TaskAgentState, title: string): void {\n\t\tconst id = this.agentId(role);\n\t\tthis.store.upsertAgent({ id, name: role, kind: \"role\", state });\n\t\tconst taskId = this.taskIds.get(role);\n\t\tconst existing = taskId !== undefined ? this.store.list().find((task) => task.id === taskId) : undefined;\n\t\tif (!existing && stateWarrantsTask(state)) {\n\t\t\tconst task = this.store.create(title, { agent: id });\n\t\t\tthis.store.update(task.id, { status: taskStatusFromState(state) });\n\t\t\tthis.taskIds.set(role, task.id);\n\t\t}\n\t}\n\n\tprivate patchRole(role: string, state: TaskAgentState, title?: string): void {\n\t\tthis.store.patchAgent(this.agentId(role), { state });\n\t\tconst taskId = this.taskIds.get(role);\n\t\tif (taskId === undefined) return;\n\t\tthis.store.update(taskId, { status: taskStatusFromState(state), ...(title !== undefined ? { title } : {}) });\n\t}\n}\n\nexport interface TeamViewOptions {\n\t/** Warning sink; defaults to console.error. */\n\twarn?: (message: string) => void;\n\t/** Store override for tests. */\n\tstore?: typeof taskStore;\n\t/** Delay between reconnect attempts in ms (default 5000). */\n\tretryDelayMs?: number;\n}\n\nexport interface TeamViewConnection {\n\t/** Close the SSE connection and stop reconnecting. */\n\tstop(): void;\n\t/** POST /steer { role, message }. Rejects on network or HTTP error. */\n\tsteer(role: string, message: string): Promise<void>;\n\t/**\n\t * Answer a paused task: POST /tasks/:taskId/resume { option, feedback? }.\n\t * Rejects with \"answered elsewhere\" on 409 (first answer wins across\n\t * surfaces) and with HTTP/network errors otherwise.\n\t */\n\tresume(taskId: string, option: string, feedback?: string): Promise<void>;\n\t/**\n\t * GET /tasks/pending — gates that opened before we attached. Resolves to\n\t * [] when the server has no active run (404) so callers need no special\n\t * casing.\n\t */\n\tpendingApprovals(): Promise<TeamPendingApproval[]>;\n\t/**\n\t * Subscribe to every TeamEvent delivered by the shared /events stream.\n\t * Returns an unsubscribe function. Listeners receive events for all roles;\n\t * per-role filtering is the subscriber's job (the attach panel filters).\n\t */\n\tsubscribe(listener: (event: TeamViewEvent) => void): () => void;\n\t/** Number of live event subscribers. Exposed for leak tests. */\n\tsubscriberCount(): number;\n}\n\nconst STATUS_TIMEOUT_MS = 5000;\nconst STEER_TIMEOUT_MS = 5000;\n\n/**\n * Start the read-only team view against a hooteams server base URL.\n *\n * Returns immediately; all network work happens in the background and any\n * failure is reported through `warn` without ever throwing.\n */\nexport function connectTeamView(url: string, options: TeamViewOptions = {}): TeamViewConnection {\n\tconst base = url.replace(/\\/+$/, \"\");\n\tconst warn = options.warn ?? ((message: string) => console.error(message));\n\tconst retryDelayMs = options.retryDelayMs ?? 5000;\n\tconst mapper = new TeamViewMapper(options.store);\n\tconst controller = new AbortController();\n\tconst listeners = new Set<(event: TeamViewEvent) => void>();\n\tlet stopped = false;\n\n\tconst deliver = (event: TeamViewEvent): void => {\n\t\tmapper.applyEvent(event);\n\t\tfor (const listener of listeners) {\n\t\t\ttry {\n\t\t\t\tlistener(event);\n\t\t\t} catch {\n\t\t\t\t// A broken subscriber must not take down the stream or its peers.\n\t\t\t}\n\t\t}\n\t};\n\n\tconst run = async (): Promise<void> => {\n\t\t// 1. Status snapshot: register the current roles.\n\t\ttry {\n\t\t\tconst response = await fetch(`${base}/status`, {\n\t\t\t\tsignal: AbortSignal.any([controller.signal, AbortSignal.timeout(STATUS_TIMEOUT_MS)]),\n\t\t\t});\n\t\t\tif (!response.ok) throw new Error(`HTTP ${response.status}`);\n\t\t\tmapper.applyStatus((await response.json()) as TeamStatusSnapshot);\n\t\t} catch (error) {\n\t\t\tif (stopped) return;\n\t\t\twarn(`team view: failed to fetch ${base}/status (${String(error)}); continuing without the team view`);\n\t\t}\n\n\t\t// 2. Single SSE subscription, reconnecting on drops.\n\t\tlet announcedDrop = false;\n\t\twhile (!stopped) {\n\t\t\ttry {\n\t\t\t\tconst response = await fetch(`${base}/events`, { signal: controller.signal });\n\t\t\t\tif (!response.ok || !response.body) throw new Error(`HTTP ${response.status}`);\n\t\t\t\tconst reader = response.body.getReader();\n\t\t\t\tconst decoder = new TextDecoder();\n\t\t\t\tlet buffer = \"\";\n\t\t\t\twhile (true) {\n\t\t\t\t\tconst { value, done } = await reader.read();\n\t\t\t\t\tif (done) break;\n\t\t\t\t\t// Only a stream that actually delivers data counts as recovered. A 200\n\t\t\t\t\t// that closes immediately (e.g. a server that answers /events without\n\t\t\t\t\t// streaming) used to re-arm the warning and repeat it every retry.\n\t\t\t\t\tannouncedDrop = false;\n\t\t\t\t\tbuffer += decoder.decode(value, { stream: true });\n\t\t\t\t\tlet index = buffer.indexOf(\"\\n\\n\");\n\t\t\t\t\twhile (index !== -1) {\n\t\t\t\t\t\tconst frame = buffer.slice(0, index);\n\t\t\t\t\t\tbuffer = buffer.slice(index + 2);\n\t\t\t\t\t\tfor (const line of frame.split(\"\\n\")) {\n\t\t\t\t\t\t\tif (!line.startsWith(\"data:\")) continue;\n\t\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\t\tdeliver(JSON.parse(line.slice(5).trim()) as TeamViewEvent);\n\t\t\t\t\t\t\t} catch {\n\t\t\t\t\t\t\t\t// Malformed frames are dropped; the stream stays up.\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t\tindex = buffer.indexOf(\"\\n\\n\");\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\tif (stopped) return;\n\t\t\t\tthrow new Error(\"stream ended\");\n\t\t\t} catch (error) {\n\t\t\t\tif (stopped || controller.signal.aborted) return;\n\t\t\t\tif (!announcedDrop) {\n\t\t\t\t\tannouncedDrop = true;\n\t\t\t\t\twarn(`team view: lost connection to ${base}/events (${String(error)}); retrying in background`);\n\t\t\t\t}\n\t\t\t\tawait new Promise((resolve) => setTimeout(resolve, retryDelayMs));\n\t\t\t}\n\t\t}\n\t};\n\n\tvoid run().catch((error) => {\n\t\tif (!stopped) warn(`team view: unexpected error (${String(error)})`);\n\t});\n\n\treturn {\n\t\tstop() {\n\t\t\tstopped = true;\n\t\t\tlisteners.clear();\n\t\t\tcontroller.abort();\n\t\t},\n\t\tasync steer(role: string, message: string): Promise<void> {\n\t\t\tconst response = await fetch(`${base}/steer`, {\n\t\t\t\tmethod: \"POST\",\n\t\t\t\theaders: { \"content-type\": \"application/json\" },\n\t\t\t\tbody: JSON.stringify({ role, message }),\n\t\t\t\tsignal: AbortSignal.any([controller.signal, AbortSignal.timeout(STEER_TIMEOUT_MS)]),\n\t\t\t});\n\t\t\tif (!response.ok) throw new Error(`HTTP ${response.status}`);\n\t\t},\n\t\tasync resume(taskId: string, option: string, feedback?: string): Promise<void> {\n\t\t\tconst response = await fetch(`${base}/tasks/${encodeURIComponent(taskId)}/resume`, {\n\t\t\t\tmethod: \"POST\",\n\t\t\t\theaders: { \"content-type\": \"application/json\" },\n\t\t\t\tbody: JSON.stringify({ option, ...(feedback !== undefined ? { feedback } : {}) }),\n\t\t\t\tsignal: AbortSignal.any([controller.signal, AbortSignal.timeout(STEER_TIMEOUT_MS)]),\n\t\t\t});\n\t\t\tif (response.status === 409) throw new Error(`task \"${taskId}\" was answered elsewhere`);\n\t\t\tif (!response.ok) throw new Error(`HTTP ${response.status}`);\n\t\t},\n\t\tasync pendingApprovals(): Promise<TeamPendingApproval[]> {\n\t\t\tconst response = await fetch(`${base}/tasks/pending`, {\n\t\t\t\tsignal: AbortSignal.any([controller.signal, AbortSignal.timeout(STATUS_TIMEOUT_MS)]),\n\t\t\t});\n\t\t\tif (response.status === 404) return [];\n\t\t\tif (!response.ok) throw new Error(`HTTP ${response.status}`);\n\t\t\tconst body = (await response.json()) as { pending?: TeamPendingApproval[] };\n\t\t\treturn Array.isArray(body.pending) ? body.pending : [];\n\t\t},\n\t\tsubscribe(listener: (event: TeamViewEvent) => void): () => void {\n\t\t\tlisteners.add(listener);\n\t\t\treturn () => {\n\t\t\t\tlisteners.delete(listener);\n\t\t\t};\n\t\t},\n\t\tsubscriberCount(): number {\n\t\t\treturn listeners.size;\n\t\t},\n\t};\n}\n"]}