Files
Claude-Code-Monitor/client/src/components/conversation/ConversationView.tsx
T
nntrivi2001 57dc91585d feat: Claude Code Monitor — lanes, pipelines and a merged workspace
Internal SmartGift build of a Claude Code monitoring dashboard.

Lanes: a durable unit of parallel agent work, one per working directory,
tracked across session restarts. Managed lanes are git worktrees the
dashboard provisions and can reset or remove behind a three-check destroy
guard and a counted preflight; adopted lanes are directories you already
own and are never destroyable.

Pipelines: a lane moves through pipeline stages. A stage the agent declares
with evidence renders green; a stage inferred from the tool-event stream
renders dashed amber and never counts as done. Detection is forward-only
within a 30-minute window, and never writes the declared stage.

Workspace: one page at /run with a lane grid, the selected lane's pipeline,
and a full Claude console behind a disclosure.
2026-07-30 14:39:03 +07:00

496 lines
19 KiB
TypeScript

/**
* @file ConversationView.tsx
* @description Conversation tab on the Session detail page. Loads a session
* (or sub-agent) JSONL transcript, paginates it incrementally, and renders
* the message stream via MessageList. Combines a WebSocket subscription, a
* visibility-gated polling fallback, and a manual refresh button so the view
* stays caught up even when hooks miss frames or the user is mid-text-only
* turn (no PreToolUse fires until Stop).
* @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
*/
/* =============================================================================
* MODULE_GUIDE — extended in-file reference (comments only; safe to read, never executed)
* =============================================================================
* **Purpose:** Renders Claude transcript rows (user, assistant, tool calls) inside Session Detail with markdown, syntax highlighting, and TUI-style segments.
*
* ## Design constraints
* - Local-first: no telemetry leaves the machine unless the user configures webhooks.
* - Fail-safe hooks path on the server must never block Claude Code; UI mirrors that
* philosophy by degrading gracefully (empty states, stale badges, reconnect loops).
* - Destructive flows stay behind explicit confirmation modals and server-side gates.
* - Internationalization: user-visible strings belong in i18n JSON, not literals here.
*
* ## Remote data & SSH
* Remote Data Sources let operators aggregate multiple machines. SSH entries describe
* how to reach a peer dashboard; the global data scope (`dataScope.ts`) narrows every
* scoped GET via `?sources=`. Health checks and import history surface in Settings.
*
* ## Observability
* Prometheus scrapes `GET /api/metrics` (see `monitoring/`). Grafana ships four
* provisioned boards (overview, sessions, tools, alerts). Native npm scripts and
* Docker Compose profiles are documented in `monitoring/README.md`.
*
* ## Internal dependencies
* - `../../lib/api`
* - `../../lib/eventBus`
* - `./MessageList`
* - `../../lib/types`
*
* ## Public surface
* - `ConversationView` — exported API; see TSDoc on the symbol for behavior.
*
* ## Testing pointers
* - Prefer colocated `__tests__` with Vitest + Testing Library for UI.
* - Server contract changes require `npm run test:server` and OpenAPI sync.
* - MCP edits: `npm run mcp:typecheck` and `npm run mcp:build`.
*
* ## Related docs
* - `ARCHITECTURE.md` — hooks → API → SQLite → WebSocket → UI pipeline.
* - `docs/API.md` — REST reference.
* - `.claude/skills/file-headers/` — mandatory `@author` header policy.
* ============================================================================= */
/* -----------------------------------------------------------------------------
* EXPORT CATALOG — quick index of symbols defined below (documentation only).
* -----------------------------------------------------------------------------
* **ConversationView**
* Part of this module's public contract. Downstream imports should treat
* the signature and return type as stable unless release notes say otherwise.
* When behavior changes, update the `@file` overview and relevant tests.
*
* ----------------------------------------------------------------------------- */
import { useEffect, useState, useCallback, useRef } from "react";
import { ChevronDown, Loader2, ArrowDown, MessagesSquare, RefreshCw } from "lucide-react";
import { api } from "../../lib/api";
import { eventBus } from "../../lib/eventBus";
import { isRemoteDataRefreshMessage } from "../../lib/remoteDataEvents";
import { MessageList } from "./MessageList";
import type { TranscriptMessage, TranscriptInfo, WSMessage } from "../../lib/types";
// Catch-up poll interval. Claude Code only fires hooks on PreToolUse /
// PostToolUse / Stop, which means a user-typed message (no hook) and any
// assistant text written between two hook fires is invisible until the next
// hook event. A short visibility-gated poll closes that gap and also rescues
// the conversation from missed/late WebSocket frames.
const POLL_INTERVAL_MS = 3000;
// Rescan the transcripts list periodically so new subagents that spawn
// mid-session appear in the dropdown without a page reload.
const TRANSCRIPTS_REFRESH_MS = 15000;
interface ConversationViewProps {
sessionId: string;
initialTranscriptId?: string | null;
}
export function ConversationView({ sessionId, initialTranscriptId }: ConversationViewProps) {
const [messages, setMessages] = useState<TranscriptMessage[]>([]);
const [total, setTotal] = useState(0);
const [loading, setLoading] = useState(true);
const [loadingHistory, setLoadingHistory] = useState(false);
const [selectedTranscript, setSelectedTranscript] = useState<string | null>(
initialTranscriptId ?? null
);
const [hasMore, setHasMore] = useState(false);
const [error, setError] = useState<string | null>(null);
const [transcripts, setTranscripts] = useState<TranscriptInfo[]>([]);
const [showNewMsg, setShowNewMsg] = useState(false);
// Track JSONL line numbers for incremental requests and history loading
const lastLineRef = useRef(0);
const firstLineRef = useRef(0);
const scrollContainerRef = useRef<HTMLDivElement>(null);
const isAtBottomRef = useRef(true);
const fetchingRef = useRef(false);
// When a fetch is in flight and a new trigger arrives (WS event, poll,
// manual refresh), we queue exactly one re-fetch so events that landed
// during the in-flight request aren't silently dropped.
const pendingFetchRef = useRef(false);
// Refresh-button spinner state - separate from initial `loading` so the
// existing skeleton doesn't blink during a manual refresh.
const [refreshing, setRefreshing] = useState(false);
// Load available transcript list (also rescanned on a short interval so
// newly-spawned subagents appear in the dropdown without a page reload).
useEffect(() => {
let cancelled = false;
async function loadTranscripts() {
try {
const result = await api.sessions.transcripts(sessionId);
if (cancelled) return;
setTranscripts(result.transcripts);
} catch {
// Non-fatal
}
}
loadTranscripts();
const interval = window.setInterval(loadTranscripts, TRANSCRIPTS_REFRESH_MS);
return () => {
cancelled = true;
window.clearInterval(interval);
};
}, [sessionId]);
// Sync external initialTranscriptId to internal state
useEffect(() => {
if (initialTranscriptId != null) {
setSelectedTranscript(initialTranscriptId);
}
}, [initialTranscriptId]);
// Initial load: fetch the latest N messages
useEffect(() => {
let cancelled = false;
async function load() {
try {
setError(null);
setLoading(true);
setShowNewMsg(false);
const result = await api.sessions.transcript(sessionId, {
agent_id: selectedTranscript || undefined,
limit: 50,
});
if (cancelled) return;
setMessages(result.messages);
setTotal(result.total);
setHasMore(result.has_more);
lastLineRef.current = result.last_line;
firstLineRef.current = result.first_line;
} catch (err) {
if (cancelled) return;
setError(err instanceof Error ? err.message : "Failed to load transcript");
setMessages([]);
setTotal(0);
} finally {
if (!cancelled) setLoading(false);
}
}
load();
return () => {
cancelled = true;
};
}, [sessionId, selectedTranscript]);
// Incrementally load new messages. Two modes:
// - bootstrap (lastLineRef === 0): the initial load saw an empty
// transcript, so we pull the latest 50 to seed the view. This unblocks
// fresh sessions where the JSONL hadn't been written yet at mount.
// - incremental (lastLineRef > 0): tail-fetch lines after the highest
// parsed message we've seen. The server already de-overlaps via
// afterLine, so we can safely append.
const fetchNewMessages = useCallback(async () => {
if (fetchingRef.current) {
// Coalesce: remember a trigger arrived during this fetch and re-run
// exactly once when the in-flight request settles.
pendingFetchRef.current = true;
return;
}
fetchingRef.current = true;
pendingFetchRef.current = false;
const wasBootstrap = lastLineRef.current === 0;
try {
const result = await api.sessions.transcript(sessionId, {
agent_id: selectedTranscript || undefined,
...(wasBootstrap ? {} : { after: lastLineRef.current }),
limit: 50,
});
if (result.messages.length === 0) return;
lastLineRef.current = result.last_line;
if (wasBootstrap) {
// Seed the view in a single render so the user sees the whole
// catch-up batch instead of a blank panel followed by a partial one.
setMessages(result.messages);
firstLineRef.current = result.first_line;
setHasMore(result.has_more);
} else {
setMessages((prev) => [...prev, ...result.messages]);
}
setTotal(result.total);
// Auto-scroll if user is at bottom; otherwise show "new messages" indicator
if (isAtBottomRef.current) {
scrollToBottom();
} else {
setShowNewMsg(true);
}
} catch {
// Non-fatal
} finally {
fetchingRef.current = false;
// Drain a queued trigger if one arrived during the fetch.
if (pendingFetchRef.current) {
pendingFetchRef.current = false;
// Defer one tick so React state updates from this call commit first.
setTimeout(() => fetchNewMessages(), 0);
}
}
// eslint-disable-next-line react-hooks/exhaustive-deps
}, [sessionId, selectedTranscript]);
// WebSocket subscription: refetch on every new_event for this session.
// Hook coverage isn't complete (a user-typed message fires no hook), so we
// also poll below to catch what WS misses.
useEffect(() => {
const unsubscribe = eventBus.subscribe((msg: WSMessage) => {
if (isRemoteDataRefreshMessage(msg)) {
fetchNewMessages();
return;
}
if (msg.type !== "new_event") return;
const data = msg.data as { session_id?: string };
if (data.session_id !== sessionId) return;
fetchNewMessages();
});
return unsubscribe;
}, [sessionId, fetchNewMessages]);
// Resync on WebSocket reconnect: events that landed during a transient
// disconnect are gone from the bus, but the JSONL still has them, so a
// single tail-fetch on reconnect catches the conversation up.
useEffect(() => {
return eventBus.onConnection((connected) => {
if (connected) fetchNewMessages();
});
}, [fetchNewMessages]);
// Visibility-gated polling fallback. Covers:
// 1. User-typed messages (no Claude Code hook fires for those).
// 2. Long assistant turns where text streams between hook fires.
// 3. Late JSONL flushes that arrive after the triggering hook's fetch.
// 4. Dropped/missed WebSocket frames.
useEffect(() => {
let interval: number | null = null;
function start() {
if (interval !== null) return;
interval = window.setInterval(() => {
if (document.visibilityState === "visible") fetchNewMessages();
}, POLL_INTERVAL_MS);
}
function stop() {
if (interval !== null) {
window.clearInterval(interval);
interval = null;
}
}
function onVisibility() {
if (document.visibilityState === "visible") {
// Tab just became visible - fire a one-shot catch-up immediately
// and resume polling. Backgrounded tabs throttle setInterval, so
// restarting on focus avoids a stale conversation.
fetchNewMessages();
start();
} else {
stop();
}
}
if (document.visibilityState === "visible") start();
document.addEventListener("visibilitychange", onVisibility);
return () => {
stop();
document.removeEventListener("visibilitychange", onVisibility);
};
}, [fetchNewMessages]);
// Manual refresh - surfaces a control in the toolbar so users can force
// a sync without reloading the page.
const refresh = useCallback(async () => {
setRefreshing(true);
try {
await fetchNewMessages();
} finally {
setRefreshing(false);
}
}, [fetchNewMessages]);
// Scroll-up to load history
const loadHistory = useCallback(async () => {
if (loadingHistory || !hasMore) return;
// Need the first message's line number
// Since message objects don't have a _line field, we track it via firstLineRef
// firstLineRef is updated on initial load and each history load
try {
setLoadingHistory(true);
const container = scrollContainerRef.current;
const prevScrollHeight = container?.scrollHeight ?? 0;
const result = await api.sessions.transcript(sessionId, {
agent_id: selectedTranscript || undefined,
before: firstLineRef.current || undefined,
limit: 50,
});
if (result.messages.length === 0) {
// Nothing older exists - clear hasMore so the hint stops showing
// even if the server still claims more is available.
setHasMore(false);
setLoadingHistory(false);
return;
}
// Update firstLineRef to the oldest message's line number in the history batch
firstLineRef.current = result.first_line;
setMessages((prev) => [...result.messages, ...prev]);
setHasMore(result.has_more);
// Preserve scroll position (don't jump to top)
requestAnimationFrame(() => {
if (container) {
const newScrollHeight = container.scrollHeight;
container.scrollTop = newScrollHeight - prevScrollHeight;
}
});
} catch {
// Non-fatal
} finally {
setLoadingHistory(false);
}
}, [sessionId, selectedTranscript, loadingHistory, hasMore]);
// Scroll to bottom
const scrollToBottom = useCallback(() => {
requestAnimationFrame(() => {
const container = scrollContainerRef.current;
if (container) {
container.scrollTop = container.scrollHeight;
}
});
}, []);
// Listen for scroll events: detect bottom position + trigger history load
const handleScroll = useCallback(() => {
const container = scrollContainerRef.current;
if (!container) return;
// Detect if at bottom
const atBottom = container.scrollHeight - container.scrollTop - container.clientHeight < 100;
isAtBottomRef.current = atBottom;
// Hide "new messages" indicator when scrolled to bottom
if (atBottom) {
setShowNewMsg(false);
}
// Load history when scrolled to top
if (container.scrollTop < 50 && hasMore && !loadingHistory) {
loadHistory();
}
}, [hasMore, loadingHistory, loadHistory]);
// Auto-scroll to bottom after initial load
useEffect(() => {
if (!loading && messages.length > 0) {
scrollToBottom();
}
}, [loading, scrollToBottom]); // eslint-disable-line react-hooks/exhaustive-deps
return (
<div className="relative flex flex-col" style={{ minHeight: 0 }}>
{/* Toolbar - always rendered after the initial load so users can
refresh even when no messages have streamed yet. */}
{!loading && (
<div className="flex items-center gap-3 mb-3 flex-shrink-0">
{transcripts.length > 1 && (
<div className="relative">
<select
value={selectedTranscript || ""}
onChange={(e) => setSelectedTranscript(e.target.value || null)}
className="appearance-none bg-surface-2 border border-surface-3 rounded-lg px-3 py-1.5 pr-8 text-sm text-gray-300 focus:outline-none focus:border-violet-500/50 hover:border-violet-500/30 cursor-pointer transition-colors"
>
{transcripts.map((t) => (
<option key={t.id} value={t.id}>
{t.name}
</option>
))}
</select>
<ChevronDown className="w-3.5 h-3.5 text-gray-500 absolute right-2.5 top-1/2 -translate-y-1/2 pointer-events-none" />
</div>
)}
<span className="inline-flex items-center gap-1.5 text-[11px] text-gray-500 font-mono bg-surface-2 border border-surface-3 rounded-md px-2 py-1">
<MessagesSquare className="w-3 h-3" />
{total} message{total !== 1 ? "s" : ""}
</span>
<button
type="button"
onClick={refresh}
disabled={refreshing || loading}
title="Refresh conversation"
aria-label="Refresh conversation"
className="inline-flex items-center gap-1.5 text-[11px] text-gray-400 hover:text-gray-200 bg-surface-2 border border-surface-3 hover:border-violet-500/30 rounded-md px-2 py-1 transition-colors disabled:opacity-50 disabled:cursor-not-allowed"
>
<RefreshCw className={`w-3 h-3 ${refreshing ? "animate-spin" : ""}`} />
Refresh
</button>
</div>
)}
{/* Error alert */}
{error && (
<div className="text-sm text-red-400 bg-red-500/10 border border-red-500/20 rounded-lg px-4 py-3 flex-shrink-0">
{error}
</div>
)}
{/* Message list container */}
<div
ref={scrollContainerRef}
onScroll={handleScroll}
className="flex-1 overflow-y-auto"
style={{ maxHeight: "calc(100vh - 320px)", minHeight: 200 }}
>
{/* History loading indicator */}
{loadingHistory && (
<div className="flex justify-center py-3">
<Loader2 className="w-4 h-4 text-gray-500 animate-spin" />
<span className="text-xs text-gray-500 ml-2">Loading history...</span>
</div>
)}
{/* Scroll-up for history hint */}
{hasMore && !loadingHistory && !loading && (
<div className="flex justify-center py-2">
<span className="text-[11px] text-gray-600"> Scroll up for older messages</span>
</div>
)}
{loading ? (
<div className="flex items-center justify-center py-12 text-gray-500 text-sm">
Loading conversation...
</div>
) : messages.length === 0 ? (
<div className="mx-auto max-w-md py-12 text-center">
<p className="text-sm text-gray-400">No conversation records found.</p>
<p className="mt-2 text-xs leading-relaxed text-gray-500">
This session's metadata was imported, but its transcript file is no longer on disk.
Claude Code automatically deletes inactive session transcripts after a retention
period (<code className="text-gray-400">cleanupPeriodDays</code>, default 30 days), so
older conversations may already be gone. Sessions imported from now on are snapshotted
and kept even after Claude Code prunes the originals.
</p>
</div>
) : (
<MessageList messages={messages} loading={false} />
)}
</div>
{/* New messages indicator */}
{showNewMsg && (
<button
onClick={() => {
scrollToBottom();
setShowNewMsg(false);
}}
className="absolute bottom-4 left-1/2 -translate-x-1/2 flex items-center gap-1.5 bg-violet-600 hover:bg-violet-500 text-white text-xs font-medium px-3 py-1.5 rounded-full shadow-lg transition-colors z-10"
>
<ArrowDown className="w-3 h-3" />
New messages
</button>
)}
</div>
);
}