hermes-agent/web/src/pages/SessionsPage.tsx

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import {
useEffect,
useLayoutEffect,
useState,
useCallback,
useRef,
} from "react";
import { useNavigate } from "react-router-dom";
import {
AlertTriangle,
CheckCircle2,
ChevronDown,
ChevronLeft,
ChevronRight,
Database,
MessageSquare,
Search,
Trash2,
Clock,
Terminal,
Globe,
MessageCircle,
Hash,
X,
Play,
} from "lucide-react";
import { api } from "@/lib/api";
import type {
SessionInfo,
SessionMessage,
SessionSearchResult,
StatusResponse,
} from "@/lib/api";
import { timeAgo } from "@/lib/utils";
import { Markdown } from "@/components/Markdown";
import { PlatformsCard } from "@/components/PlatformsCard";
import { Toast } from "@/components/Toast";
import { Button } from "@nous-research/ui/ui/components/button";
import { ListItem } from "@nous-research/ui/ui/components/list-item";
import { Spinner } from "@nous-research/ui/ui/components/spinner";
import { Badge } from "@nous-research/ui/ui/components/badge";
import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
import { DeleteConfirmDialog } from "@/components/DeleteConfirmDialog";
import { useConfirmDelete } from "@/hooks/useConfirmDelete";
import { Input } from "@/components/ui/input";
import { useSystemActions } from "@/contexts/useSystemActions";
import { useToast } from "@/hooks/useToast";
import { useI18n } from "@/i18n";
import { usePageHeader } from "@/contexts/usePageHeader";
import { PluginSlot } from "@/plugins";
import { isDashboardEmbeddedChatEnabled } from "@/lib/dashboard-flags";
const SOURCE_CONFIG: Record<string, { icon: typeof Terminal; color: string }> =
{
cli: { icon: Terminal, color: "text-primary" },
telegram: { icon: MessageCircle, color: "text-[oklch(0.65_0.15_250)]" },
discord: { icon: Hash, color: "text-[oklch(0.65_0.15_280)]" },
slack: { icon: MessageSquare, color: "text-[oklch(0.7_0.15_155)]" },
whatsapp: { icon: Globe, color: "text-success" },
cron: { icon: Clock, color: "text-warning" },
};
/** Render an FTS5 snippet with highlighted matches.
* The backend wraps matches in >>> and <<< delimiters. */
function SnippetHighlight({ snippet }: { snippet: string }) {
const parts: React.ReactNode[] = [];
const regex = />>>(.*?)<<</g;
let last = 0;
let match: RegExpExecArray | null;
let i = 0;
while ((match = regex.exec(snippet)) !== null) {
if (match.index > last) {
parts.push(snippet.slice(last, match.index));
}
parts.push(
<mark key={i++} className="bg-warning/30 text-warning px-0.5">
{match[1]}
</mark>,
);
last = regex.lastIndex;
}
if (last < snippet.length) {
parts.push(snippet.slice(last));
}
return (
<p className="text-xs text-muted-foreground/80 truncate max-w-lg mt-0.5">
{parts}
</p>
);
}
function ToolCallBlock({
toolCall,
}: {
toolCall: { id: string; function: { name: string; arguments: string } };
}) {
const [open, setOpen] = useState(false);
const { t } = useI18n();
let args = toolCall.function.arguments;
try {
args = JSON.stringify(JSON.parse(args), null, 2);
} catch {
// keep as-is
}
return (
<div className="mt-2 border border-warning/20 bg-warning/5">
<ListItem
onClick={() => setOpen(!open)}
aria-label={`${open ? t.common.collapse : t.common.expand} tool call ${toolCall.function.name}`}
aria-expanded={open}
className="px-3 py-2 text-xs text-warning hover:bg-warning/10 hover:text-warning"
>
{open ? (
<ChevronDown className="h-3 w-3" />
) : (
<ChevronRight className="h-3 w-3" />
)}
<span className="font-mono-ui font-medium">
{toolCall.function.name}
</span>
<span className="text-warning/50 ml-auto">{toolCall.id}</span>
</ListItem>
{open && (
<pre className="border-t border-warning/20 px-3 py-2 text-xs text-warning/80 overflow-x-auto whitespace-pre-wrap font-mono">
{args}
</pre>
)}
</div>
);
}
function MessageBubble({
msg,
highlight,
}: {
msg: SessionMessage;
highlight?: string;
}) {
const { t } = useI18n();
const ROLE_STYLES: Record<
string,
{ bg: string; text: string; label: string }
> = {
user: {
bg: "bg-primary/10",
text: "text-primary",
label: t.sessions.roles.user,
},
assistant: {
bg: "bg-success/10",
text: "text-success",
label: t.sessions.roles.assistant,
},
system: {
bg: "bg-muted",
text: "text-muted-foreground",
label: t.sessions.roles.system,
},
tool: {
bg: "bg-warning/10",
text: "text-warning",
label: t.sessions.roles.tool,
},
};
const style = ROLE_STYLES[msg.role] ?? ROLE_STYLES.system;
const label = msg.tool_name
? `${t.sessions.roles.tool}: ${msg.tool_name}`
: style.label;
// Check if any search term appears as a prefix of any word in content
const isHit = (() => {
if (!highlight || !msg.content) return false;
const content = msg.content.toLowerCase();
const terms = highlight.toLowerCase().split(/\s+/).filter(Boolean);
return terms.some((term) => content.includes(term));
})();
// Split search query into terms for inline highlighting
const highlightTerms =
isHit && highlight ? highlight.split(/\s+/).filter(Boolean) : undefined;
return (
<div
className={`${style.bg} p-3 ${isHit ? "ring-1 ring-warning/40" : ""}`}
data-search-hit={isHit || undefined}
>
<div className="flex items-center gap-2 mb-1">
<span className={`text-xs font-semibold ${style.text}`}>{label}</span>
{isHit && (
<Badge tone="warning" className="text-[9px] py-0 px-1.5">
{t.common.match}
</Badge>
)}
{msg.timestamp && (
<span className="text-[10px] text-muted-foreground">
{timeAgo(msg.timestamp)}
</span>
)}
</div>
{msg.content &&
(msg.role === "system" ? (
<div className="text-sm text-foreground whitespace-pre-wrap leading-relaxed">
{msg.content}
</div>
) : (
<Markdown content={msg.content} highlightTerms={highlightTerms} />
))}
{msg.tool_calls && msg.tool_calls.length > 0 && (
<div className="mt-1">
{msg.tool_calls.map((tc) => (
<ToolCallBlock key={tc.id} toolCall={tc} />
))}
</div>
)}
</div>
);
}
/** Message list with auto-scroll to first search hit. */
function MessageList({
messages,
highlight,
}: {
messages: SessionMessage[];
highlight?: string;
}) {
const containerRef = useRef<HTMLDivElement>(null);
useEffect(() => {
if (!highlight || !containerRef.current) return;
// Scroll to first hit after render
const timer = setTimeout(() => {
const hit = containerRef.current?.querySelector("[data-search-hit]");
if (hit) {
hit.scrollIntoView({ behavior: "smooth", block: "center" });
}
}, 50);
return () => clearTimeout(timer);
}, [messages, highlight]);
return (
<div
ref={containerRef}
className="flex flex-col gap-3 max-h-[600px] overflow-y-auto pr-2"
>
{messages.map((msg, i) => (
<MessageBubble key={i} msg={msg} highlight={highlight} />
))}
</div>
);
}
function SessionRow({
session,
snippet,
searchQuery,
isExpanded,
onToggle,
onDelete,
resumeInChatEnabled,
}: {
session: SessionInfo;
snippet?: string;
searchQuery?: string;
isExpanded: boolean;
onToggle: () => void;
onDelete: () => void;
resumeInChatEnabled: boolean;
}) {
const [messages, setMessages] = useState<SessionMessage[] | null>(null);
const [loading, setLoading] = useState(false);
const [error, setError] = useState<string | null>(null);
const { t } = useI18n();
const navigate = useNavigate();
useEffect(() => {
if (isExpanded && messages === null && !loading) {
setLoading(true);
api
.getSessionMessages(session.id)
.then((resp) => setMessages(resp.messages))
.catch((err) => setError(String(err)))
.finally(() => setLoading(false));
}
}, [isExpanded, session.id, messages, loading]);
const sourceInfo = (session.source
? SOURCE_CONFIG[session.source]
: null) ?? { icon: Globe, color: "text-muted-foreground" };
const SourceIcon = sourceInfo.icon;
const hasTitle = session.title && session.title !== "Untitled";
return (
<div
className={`border overflow-hidden transition-colors ${
session.is_active
? "border-success/30 bg-success/[0.03]"
: "border-border"
}`}
>
<div
className="flex items-center justify-between p-3 cursor-pointer hover:bg-secondary/30 transition-colors"
onClick={onToggle}
>
<div className="flex items-center gap-3 min-w-0 flex-1">
<div className={`shrink-0 ${sourceInfo.color}`}>
<SourceIcon className="h-4 w-4" />
</div>
<div className="flex flex-col gap-0.5 min-w-0">
<div className="flex items-center gap-2">
<span
className={`text-sm truncate pr-2 ${hasTitle ? "font-medium" : "text-muted-foreground italic"}`}
>
{hasTitle
? session.title
: session.preview
? session.preview.slice(0, 60)
: t.sessions.untitledSession}
</span>
{session.is_active && (
<Badge tone="success" className="text-[10px] shrink-0">
<span className="mr-1 inline-block h-1.5 w-1.5 animate-pulse rounded-full bg-current" />
{t.common.live}
</Badge>
)}
</div>
<div className="flex items-center gap-1.5 text-xs text-muted-foreground">
<span className="truncate max-w-[120px] sm:max-w-[180px]">
{(session.model ?? t.common.unknown).split("/").pop()}
</span>
<span className="text-border">&#183;</span>
<span>
{session.message_count} {t.common.msgs}
</span>
{session.tool_call_count > 0 && (
<>
<span className="text-border">&#183;</span>
<span>
{session.tool_call_count} {t.common.tools}
</span>
</>
)}
<span className="text-border">&#183;</span>
<span>{timeAgo(session.last_active)}</span>
</div>
{snippet && <SnippetHighlight snippet={snippet} />}
</div>
</div>
<div className="flex items-center gap-2 shrink-0">
<Badge tone="outline" className="text-[10px]">
{session.source ?? "local"}
</Badge>
{resumeInChatEnabled && (
<Button
ghost
size="icon"
className="text-muted-foreground hover:text-success"
aria-label={t.sessions.resumeInChat}
title={t.sessions.resumeInChat}
onClick={(e) => {
e.stopPropagation();
navigate(`/chat?resume=${encodeURIComponent(session.id)}`);
}}
>
<Play />
</Button>
)}
<Button
ghost
destructive
size="icon"
aria-label={t.sessions.deleteSession}
onClick={(e) => {
e.stopPropagation();
onDelete();
}}
>
<Trash2 />
</Button>
</div>
</div>
{isExpanded && (
<div className="border-t border-border bg-background/50 p-4">
{loading && (
<div className="flex items-center justify-center py-8">
<Spinner className="text-xl text-primary" />
</div>
)}
{error && (
<p className="text-sm text-destructive py-4 text-center">{error}</p>
)}
{messages && messages.length === 0 && (
<p className="text-sm text-muted-foreground py-4 text-center">
{t.sessions.noMessages}
</p>
)}
{messages && messages.length > 0 && (
<MessageList messages={messages} highlight={searchQuery} />
)}
</div>
)}
</div>
);
}
export default function SessionsPage() {
const [sessions, setSessions] = useState<SessionInfo[]>([]);
const [total, setTotal] = useState(0);
const [page, setPage] = useState(0);
const PAGE_SIZE = 20;
const [loading, setLoading] = useState(true);
const [search, setSearch] = useState("");
const [expandedId, setExpandedId] = useState<string | null>(null);
const [searchResults, setSearchResults] = useState<
SessionSearchResult[] | null
>(null);
const [searching, setSearching] = useState(false);
const debounceRef = useRef<ReturnType<typeof setTimeout>>(null);
const logScrollRef = useRef<HTMLPreElement | null>(null);
const [status, setStatus] = useState<StatusResponse | null>(null);
const [overviewSessions, setOverviewSessions] = useState<SessionInfo[]>([]);
const { toast, showToast } = useToast();
const { t } = useI18n();
const { setAfterTitle, setEnd } = usePageHeader();
const { activeAction, actionStatus, dismissLog } = useSystemActions();
const resumeInChatEnabled = isDashboardEmbeddedChatEnabled();
useLayoutEffect(() => {
if (loading) {
setAfterTitle(null);
setEnd(null);
return;
}
setAfterTitle(
<Badge tone="secondary" className="text-xs tabular-nums">
{total}
</Badge>,
);
setEnd(
<div className="relative w-full min-w-0 sm:max-w-xs">
{searching ? (
<Spinner className="absolute left-2.5 top-1/2 -translate-y-1/2 text-[0.875rem] text-primary" />
) : (
<Search className="absolute left-2.5 top-1/2 -translate-y-1/2 h-3.5 w-3.5 text-muted-foreground" />
)}
<Input
placeholder={t.sessions.searchPlaceholder}
value={search}
onChange={(e) => setSearch(e.target.value)}
className="h-8 pr-7 pl-8 text-xs"
/>
{search && (
<Button
ghost
size="xs"
className="absolute right-1.5 top-1/2 -translate-y-1/2 text-muted-foreground hover:text-foreground"
onClick={() => setSearch("")}
aria-label={t.common.clear}
>
<X />
</Button>
)}
</div>,
);
return () => {
setAfterTitle(null);
setEnd(null);
};
}, [
loading,
search,
searching,
setAfterTitle,
setEnd,
t.common.clear,
t.sessions.searchPlaceholder,
total,
]);
const loadSessions = useCallback((p: number) => {
setLoading(true);
api
.getSessions(PAGE_SIZE, p * PAGE_SIZE)
.then((resp) => {
setSessions(resp.sessions);
setTotal(resp.total);
})
.catch(() => {})
.finally(() => setLoading(false));
}, []);
useEffect(() => {
loadSessions(page);
}, [loadSessions, page]);
useEffect(() => {
const loadOverview = () => {
api
.getStatus()
.then(setStatus)
.catch(() => {});
api
.getSessions(50)
.then((r) => setOverviewSessions(r.sessions))
.catch(() => {});
};
loadOverview();
const id = setInterval(loadOverview, 5000);
return () => clearInterval(id);
}, []);
useEffect(() => {
const el = logScrollRef.current;
if (el) el.scrollTop = el.scrollHeight;
}, [actionStatus?.lines]);
// Debounced FTS search
useEffect(() => {
if (debounceRef.current) clearTimeout(debounceRef.current);
if (!search.trim()) {
setSearchResults(null);
setSearching(false);
return;
}
setSearching(true);
debounceRef.current = setTimeout(() => {
api
.searchSessions(search.trim())
.then((resp) => setSearchResults(resp.results))
.catch(() => setSearchResults(null))
.finally(() => setSearching(false));
}, 300);
return () => {
if (debounceRef.current) clearTimeout(debounceRef.current);
};
}, [search]);
const sessionDelete = useConfirmDelete({
onDelete: useCallback(
async (id: string) => {
try {
await api.deleteSession(id);
setSessions((prev) => prev.filter((s) => s.id !== id));
setTotal((prev) => prev - 1);
if (expandedId === id) setExpandedId(null);
showToast(t.sessions.sessionDeleted, "success");
} catch {
showToast(t.sessions.failedToDelete, "error");
throw new Error("delete failed");
}
},
[
expandedId,
showToast,
t.sessions.sessionDeleted,
t.sessions.failedToDelete,
],
),
});
const pendingSession = sessionDelete.pendingId
? sessions.find((s) => s.id === sessionDelete.pendingId)
: null;
// Build snippet map from search results (session_id → snippet)
const snippetMap = new Map<string, string>();
if (searchResults) {
for (const r of searchResults) {
snippetMap.set(r.session_id, r.snippet);
}
}
// When searching, filter sessions to those with FTS matches;
// when not searching, show all sessions
const filtered = searchResults
? sessions.filter((s) => snippetMap.has(s.id))
: sessions;
const platformEntries = status
? Object.entries(status.gateway_platforms ?? {})
: [];
const recentSessions = overviewSessions
.filter((s) => !s.is_active)
.slice(0, 5);
const alerts: { message: string; detail?: string }[] = [];
if (status) {
if (status.gateway_state === "startup_failed") {
alerts.push({
message: t.status.gatewayFailedToStart,
detail: status.gateway_exit_reason ?? undefined,
});
}
const failedPlatformEntries = platformEntries.filter(
([, info]) => info.state === "fatal" || info.state === "disconnected",
);
for (const [name, info] of failedPlatformEntries) {
const stateLabel =
info.state === "fatal"
? t.status.platformError
: t.status.platformDisconnected;
alerts.push({
message: `${name.charAt(0).toUpperCase() + name.slice(1)} ${stateLabel}`,
detail: info.error_message ?? undefined,
});
}
}
if (loading) {
return (
<div className="flex items-center justify-center py-24">
<Spinner className="text-2xl text-primary" />
</div>
);
}
return (
<div className="flex flex-col gap-4">
<PluginSlot name="sessions:top" />
<Toast toast={toast} />
<DeleteConfirmDialog
open={sessionDelete.isOpen}
onCancel={sessionDelete.cancel}
onConfirm={sessionDelete.confirm}
title={t.sessions.confirmDeleteTitle}
description={
pendingSession?.title && pendingSession.title !== "Untitled"
? `"${pendingSession.title}" — ${t.sessions.confirmDeleteMessage}`
: t.sessions.confirmDeleteMessage
}
loading={sessionDelete.isDeleting}
/>
{alerts.length > 0 && (
<div className="border border-destructive/30 bg-destructive/[0.06] p-4">
<div className="flex items-start gap-3">
<AlertTriangle className="h-5 w-5 text-destructive shrink-0 mt-0.5" />
<div className="flex flex-col gap-2 min-w-0">
{alerts.map((alert, i) => (
<div key={i}>
<p className="text-sm font-medium text-destructive">
{alert.message}
</p>
{alert.detail && (
<p className="text-xs text-destructive/70 mt-0.5">
{alert.detail}
</p>
)}
</div>
))}
</div>
</div>
</div>
)}
{activeAction && (
<div className="border border-border bg-background-base/50">
<div className="flex items-center justify-between gap-2 border-b border-border px-3 py-2">
<div className="flex items-center gap-2 min-w-0">
{actionStatus?.running ? (
<Spinner className="shrink-0 text-[0.875rem] text-warning" />
) : actionStatus?.exit_code === 0 ? (
<CheckCircle2 className="h-3.5 w-3.5 shrink-0 text-success" />
) : actionStatus !== null ? (
<AlertTriangle className="h-3.5 w-3.5 shrink-0 text-destructive" />
) : (
<Spinner className="shrink-0 text-[0.875rem] text-muted-foreground" />
)}
<span className="text-xs font-mondwest tracking-[0.12em] truncate">
{activeAction === "restart"
? t.status.restartGateway
: t.status.updateHermes}
</span>
<Badge
tone={
actionStatus?.running
? "warning"
: actionStatus?.exit_code === 0
? "success"
: actionStatus
? "destructive"
: "outline"
}
className="text-[10px] shrink-0"
>
{actionStatus?.running
? t.status.running
: actionStatus?.exit_code === 0
? t.status.actionFinished
: actionStatus
? `${t.status.actionFailed} (${actionStatus.exit_code ?? "?"})`
: t.common.loading}
</Badge>
</div>
<Button
ghost
size="icon"
onClick={dismissLog}
className="shrink-0 opacity-60 hover:opacity-100"
aria-label={t.common.close}
>
<X />
</Button>
</div>
<pre
ref={logScrollRef}
className="max-h-72 overflow-auto px-3 py-2 font-mono-ui text-[11px] leading-relaxed whitespace-pre-wrap break-all"
>
{actionStatus?.lines && actionStatus.lines.length > 0
? actionStatus.lines.join("\n")
: t.status.waitingForOutput}
</pre>
</div>
)}
{platformEntries.length > 0 && status && (
<PlatformsCard platforms={platformEntries} />
)}
{recentSessions.length > 0 && (
<Card>
<CardHeader>
<div className="flex items-center gap-2">
<Clock className="h-5 w-5 text-muted-foreground" />
<CardTitle className="text-base">
{t.status.recentSessions}
</CardTitle>
</div>
</CardHeader>
<CardContent className="grid gap-3">
{recentSessions.map((s) => (
<div
key={s.id}
className="flex flex-col sm:flex-row sm:items-center sm:justify-between gap-2 border border-border p-3 w-full"
>
<div className="flex flex-col gap-1 min-w-0 w-full">
<span className="font-medium text-sm truncate">
{s.title ?? t.common.untitled}
</span>
<span className="text-xs text-muted-foreground truncate">
<span className="font-mono-ui">
{(s.model ?? t.common.unknown).split("/").pop()}
</span>{" "}
· {s.message_count} {t.common.msgs} ·{" "}
{timeAgo(s.last_active)}
</span>
{s.preview && (
<span className="text-xs text-muted-foreground/70 truncate">
{s.preview}
</span>
)}
</div>
<Badge
tone="outline"
className="text-[10px] shrink-0 self-start sm:self-center"
>
<Database className="mr-1 h-3 w-3" />
{s.source ?? "local"}
</Badge>
</div>
))}
</CardContent>
</Card>
)}
{filtered.length === 0 ? (
<div className="flex flex-col items-center justify-center py-16 text-muted-foreground">
<Clock className="h-8 w-8 mb-3 opacity-40" />
<p className="text-sm font-medium">
{search ? t.sessions.noMatch : t.sessions.noSessions}
</p>
{!search && (
<p className="text-xs mt-1 text-muted-foreground/60">
{t.sessions.startConversation}
</p>
)}
</div>
) : (
<>
<div className="flex flex-col gap-1.5">
{filtered.map((s) => (
<SessionRow
key={s.id}
session={s}
snippet={snippetMap.get(s.id)}
searchQuery={search || undefined}
isExpanded={expandedId === s.id}
onToggle={() =>
setExpandedId((prev) => (prev === s.id ? null : s.id))
}
onDelete={() => sessionDelete.requestDelete(s.id)}
resumeInChatEnabled={resumeInChatEnabled}
/>
))}
</div>
{!searchResults && total > PAGE_SIZE && (
<div className="flex items-center justify-between pt-2">
<span className="text-xs text-muted-foreground">
{page * PAGE_SIZE + 1}{Math.min((page + 1) * PAGE_SIZE, total)}{" "}
{t.common.of} {total}
</span>
<div className="flex items-center gap-1">
<Button
outlined
size="icon"
disabled={page === 0}
onClick={() => setPage((p) => p - 1)}
aria-label={t.sessions.previousPage}
>
<ChevronLeft />
</Button>
<span className="text-xs text-muted-foreground px-2">
{t.common.page} {page + 1} {t.common.of}{" "}
{Math.ceil(total / PAGE_SIZE)}
</span>
<Button
outlined
size="icon"
disabled={(page + 1) * PAGE_SIZE >= total}
onClick={() => setPage((p) => p + 1)}
aria-label={t.sessions.nextPage}
>
<ChevronRight />
</Button>
</div>
</div>
)}
</>
)}
<PluginSlot name="sessions:bottom" />
</div>
);
}