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import { useNavigate, useParams } from "react-router-dom";
import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
import {
ApiError,
createLiveSession,
deleteSession,
expandSessionInput,
fetchConfigBootstrap,
fetchLiveSessionDetail,
fetchSessionDetail,
fetchSessions,
setActiveModelProfile,
setLiveSessionProfile,
submitSessionInput,
uploadSessionImages,
} from "../../api";
import type { HistoryItem, ModelProfileView, SessionRecord, TimelineItem } from "../../types";
import {
getLiveSessionKey,
getSavedSessionKey,
useSessionStore,
} from "../../store";
import { useLiveSessionEvents } from "../../hooks/useLiveSessionEvents";
import { ConnectionBadge } from "./ConnectionBadge";
import { DeleteSessionModal } from "./DeleteSessionModal";
import { RunHistory } from "./RunHistory";
import { SessionSidebar } from "./SessionSidebar";
import { SessionTimeline } from "./SessionTimeline";
import { UsageBar } from "./UsageBar";
import { Composer, type ComposerHandle } from "./Composer";
export function SessionPage({
workspaceRoot,
supportsImageInputs,
}: {
workspaceRoot: string | undefined;
supportsImageInputs: boolean;
}) {
const client = useQueryClient();
const navigate = useNavigate();
const {
sessionId: routeSessionId,
liveSessionId: routeLiveSessionId,
} = useParams<{ sessionId?: string; liveSessionId?: string }>();
const [sidebarOpen, setSidebarOpen] = useState(false);
const [inputWarnings, setInputWarnings] = useState<string[]>([]);
const [pendingDeleteSession, setPendingDeleteSession] = useState<SessionRecord | null>(null);
const [pendingProfileId, setPendingProfileId] = useState<string | null>(null);
const composerRef = useRef<ComposerHandle>(null);
const createRequestKeyRef = useRef<string | null>(null);
const routeSessionKey = routeSessionId
? getSavedSessionKey(routeSessionId)
: routeLiveSessionId
? getLiveSessionKey(routeLiveSessionId)
: null;
const activeSessionKey = useSessionStore((state) => {
if (routeSessionId) {
return state.sessionIndex[routeSessionId] ?? getSavedSessionKey(routeSessionId);
}
if (routeLiveSessionId) {
return state.liveSessionIndex[routeLiveSessionId] ?? getLiveSessionKey(routeLiveSessionId);
}
return state.activeSessionKey;
});
const selectedRouteSessionKey =
routeSessionId || routeLiveSessionId ? (activeSessionKey ?? routeSessionKey) : null;
const sessionState = useSessionStore((state) =>
selectedRouteSessionKey ? state.sessionsByKey[selectedRouteSessionKey] ?? null : null,
);
const setActiveSession = useSessionStore((state) => state.setActiveSession);
const hydrateSavedSession = useSessionStore((state) => state.hydrateSavedSession);
const attachLiveSession = useSessionStore((state) => state.attachLiveSession);
const hydrateLiveSnapshot = useSessionStore((state) => state.hydrateLiveSnapshot);
const updateRuntimeFromSession = useSessionStore((state) => state.updateRuntimeFromSession);
useEffect(() => {
setActiveSession(selectedRouteSessionKey);
}, [selectedRouteSessionKey, setActiveSession]);
const sessionsQuery = useQuery({
queryKey: ["sessions"],
queryFn: fetchSessions,
refetchInterval: 12_000,
});
const sessionDetailQuery = useQuery({
queryKey: ["session", routeSessionId],
queryFn: () => fetchSessionDetail(routeSessionId!),
enabled: Boolean(routeSessionId),
retry: false,
});
const liveSessionDetailQuery = useQuery({
queryKey: ["live-session", routeLiveSessionId],
queryFn: () => fetchLiveSessionDetail(routeLiveSessionId!),
enabled: Boolean(routeLiveSessionId),
retry: false,
});
const configQuery = useQuery({
queryKey: ["config-bootstrap"],
queryFn: fetchConfigBootstrap,
staleTime: 30_000,
});
const createSessionMutation = useMutation({
mutationFn: createLiveSession,
onSuccess: (session, variables) => {
const requestSessionId = variables?.session_id ?? null;
const requestedKey = createRequestKeyRef.current
?? (requestSessionId
? getSavedSessionKey(requestSessionId)
: getLiveSessionKey(session.live_session_id));
const resolvedKey = attachLiveSession(requestedKey, session, {
preserveItems: Boolean(requestSessionId),
});
if (!requestSessionId) {
void navigate(`/sessions/live/${encodeURIComponent(session.live_session_id)}`, {
replace: true,
});
} else if (resolvedKey !== requestedKey && session.session_id) {
void navigate(`/sessions/${encodeURIComponent(session.session_id)}`, { replace: true });
}
},
});
const sendInputMutation = useMutation({
mutationFn: (payload: {
text: string;
file_paths: string[];
image_paths: string[];
image_upload_ids: string[];
profile_id?: string | null;
}) => {
if (!sessionState?.liveSessionId) throw new Error("No live session available.");
return submitSessionInput(sessionState.liveSessionId, payload);
},
onSuccess: (session) => {
if (selectedRouteSessionKey) {
updateRuntimeFromSession(selectedRouteSessionKey, session);
}
},
});
const deleteSessionMutation = useMutation({
mutationFn: deleteSession,
});
const setSessionProfileMutation = useMutation({
mutationFn: ({
liveSessionId,
profileId,
}: {
liveSessionId: string;
profileId: string | null;
}) => setLiveSessionProfile(liveSessionId, profileId),
onSuccess: (session) => {
const targetKey = session.session_id
? getSavedSessionKey(session.session_id)
: selectedRouteSessionKey;
if (targetKey) {
updateRuntimeFromSession(targetKey, session);
}
void client.invalidateQueries({ queryKey: ["sessions"] });
if (session.session_id) {
void client.invalidateQueries({ queryKey: ["session", session.session_id] });
}
},
});
const setActiveProfileMutation = useMutation({
mutationFn: ({
profileId,
configRevision,
}: {
profileId: string | null;
configRevision: string;
}) => setActiveModelProfile(profileId, configRevision),
onSuccess: async () => {
await Promise.all([
client.invalidateQueries({ queryKey: ["config-bootstrap"] }),
client.invalidateQueries({ queryKey: ["bootstrap"] }),
]);
},
});
// Hydrate saved session items when session detail data arrives.
// Skip hydration when a live session is already attached and has
// items — even if the WebSocket is reconnecting. Re-hydrating
// during reconnection replaces WS-sourced items (item IDs like
// "message-N") with API history items ("history-N"), then the WS
// snapshot replay adds them again with their original IDs,
// producing duplicates and flickering.
useEffect(() => {
if (!routeSessionId || !sessionDetailQuery.isSuccess) return;
const sessionKey = getSavedSessionKey(routeSessionId);
const existing = useSessionStore.getState().sessionsByKey[sessionKey];
const skipHydration =
existing?.liveSessionId
&& !existing.sessionEnded
&& existing.items.length > 0;
if (!skipHydration) {
const serverSeq =
sessionDetailQuery.data.active_live_session?.last_event_seq;
hydrateSavedSession(
routeSessionId,
sessionDetailQuery.data.history_items.map(mapHistoryItem),
typeof serverSeq === "number" ? serverSeq : undefined,
);
}
if (sessionDetailQuery.data.active_live_session) {
attachLiveSession(sessionKey, sessionDetailQuery.data.active_live_session, {
preserveItems: true,
});
}
}, [
attachLiveSession,
hydrateSavedSession,
routeSessionId,
sessionDetailQuery.isSuccess,
sessionDetailQuery.data,
]);
// Create a new live session for a saved session when one doesn't exist yet.
useEffect(() => {
if (!routeSessionId || !sessionDetailQuery.isSuccess) return;
if (sessionDetailQuery.data.active_live_session) return;
if (sessionState?.liveSessionId && !sessionState.sessionEnded) return;
if (createSessionMutation.isPending) return;
createRequestKeyRef.current = getSavedSessionKey(routeSessionId);
createSessionMutation.mutate({ session_id: routeSessionId });
}, [
sessionState?.liveSessionId,
sessionState?.sessionEnded,
createSessionMutation,
routeSessionId,
sessionDetailQuery.isSuccess,
sessionDetailQuery.data?.active_live_session,
]);
useEffect(() => {
if (!routeLiveSessionId || !liveSessionDetailQuery.isSuccess) return;
const resolvedKey = hydrateLiveSnapshot(
getLiveSessionKey(routeLiveSessionId),
liveSessionDetailQuery.data.live_session,
liveSessionDetailQuery.data.snapshot,
);
if (liveSessionDetailQuery.data.live_session.session_id) {
void navigate(
`/sessions/${encodeURIComponent(liveSessionDetailQuery.data.live_session.session_id)}`,
{ replace: true },
);
setActiveSession(resolvedKey);
}
}, [
hydrateLiveSnapshot,
liveSessionDetailQuery.isSuccess,
liveSessionDetailQuery.data,
navigate,
routeLiveSessionId,
setActiveSession,
]);
useEffect(() => {
if (routeSessionId || routeLiveSessionId) return;
if (createSessionMutation.isPending) return;
const profiles = configQuery.data?.model_profiles ?? [];
if (profiles.length === 0) return;
const profileId = resolveSavedProfileId(
pendingProfileId ?? configQuery.data?.active_profile_id ?? profiles[0]?.id ?? null,
profiles,
);
createRequestKeyRef.current = null;
createSessionMutation.mutate(profileId ? { profile_id: profileId } : {});
}, [
configQuery.data,
createSessionMutation,
pendingProfileId,
routeLiveSessionId,
routeSessionId,
]);
useEffect(() => {
if (!routeLiveSessionId || !sessionState?.sessionId) return;
void navigate(`/sessions/${encodeURIComponent(sessionState.sessionId)}`, { replace: true });
}, [sessionState?.sessionId, navigate, routeLiveSessionId]);
useEffect(() => {
if (sessionState?.inputEnabled && sessionState.liveSessionId && !sessionState.sessionEnded) {
composerRef.current?.focus();
}
}, [sessionState?.inputEnabled, sessionState?.liveSessionId, sessionState?.sessionEnded]);
useEffect(() => {
if (inputWarnings.length === 0) return undefined;
const timeoutId = window.setTimeout(() => setInputWarnings([]), 5000);
return () => window.clearTimeout(timeoutId);
}, [inputWarnings]);
useEffect(() => {
const sessionId = sessionState?.sessionId;
if (!sessionId) return;
void client.invalidateQueries({ queryKey: ["sessions"] });
void client.invalidateQueries({ queryKey: ["session", sessionId] });
}, [sessionState?.sessionId, client]);
useLiveSessionEvents(selectedRouteSessionKey, sessionState?.liveSessionId ?? null);
const activeSessionRecord = useMemo(() => {
if (!routeSessionId) return null;
return (
sessionDetailQuery.data?.session
?? sessionsQuery.data?.find((session) => session.session_id === routeSessionId)
?? {
session_id: routeSessionId,
directory: workspaceRoot ?? "",
provider: "",
provider_id: null,
model: "",
profile_id: null,
previous_id: null,
title: "",
total_tokens: 0,
input_tokens: 0,
output_tokens: 0,
cost_usd: 0,
created_at: "",
updated_at: "",
}
);
}, [routeSessionId, sessionDetailQuery.data?.session, sessionsQuery.data, workspaceRoot]);
const modelProfiles = configQuery.data?.model_profiles ?? [];
const routeProfileId = routeSessionId ? activeSessionRecord?.profile_id ?? "" : "";
const runtimeProfileId = sessionState?.runtime?.profile_id ?? "";
const initialBlankProfileId = configQuery.data?.active_profile_id ?? modelProfiles[0]?.id ?? "";
const selectedProfileId =
pendingProfileId ?? (runtimeProfileId || (routeSessionId ? routeProfileId : initialBlankProfileId));
const selectedSavedProfileId = resolveSavedProfileId(selectedProfileId, modelProfiles);
const providerSupportsImages =
sessionState?.runtime?.provider
? (
configQuery.data?.options.provider_metadata[sessionState.runtime.provider]?.supports_image_inputs
?? supportsImageInputs
)
: supportsImageInputs;
const profileSelectorDisabled =
modelProfiles.length === 0
|| !sessionState?.liveSessionId
|| !sessionState.inputEnabled
|| sessionState.sessionEnded
|| createSessionMutation.isPending
|| setSessionProfileMutation.isPending
|| setActiveProfileMutation.isPending;
const handleSubmit = async (payload: { text: string; images: File[] }) => {
const { text, images } = payload;
setInputWarnings([]);
if (text.startsWith("/")) {
await sendInputMutation.mutateAsync({
text,
file_paths: [],
image_paths: [],
image_upload_ids: [],
profile_id: selectedSavedProfileId,
});
return;
}
const expanded = await expandSessionInput(text);
if (expanded.warnings.length > 0) {
setInputWarnings(expanded.warnings);
}
const uploadedImageIds =
images.length > 0 && sessionState?.liveSessionId
? (await uploadSessionImages(sessionState.liveSessionId, images)).map((image) => image.upload_id)
: [];
await sendInputMutation.mutateAsync({
text: expanded.text,
file_paths: expanded.file_paths,
image_paths: Array.from(new Set(expanded.image_paths)),
image_upload_ids: uploadedImageIds,
profile_id: selectedSavedProfileId,
});
};
const handleProfileChange = async (nextProfileId: string) => {
setPendingProfileId(nextProfileId);
try {
const nextConfigRevision = configQuery.data?.config_revision;
if (!nextConfigRevision) {
throw new Error("Settings are not loaded yet.");
}
await setActiveProfileMutation.mutateAsync({
profileId: nextProfileId,
configRevision: nextConfigRevision,
});
if (sessionState?.liveSessionId) {
await setSessionProfileMutation.mutateAsync({
liveSessionId: sessionState.liveSessionId,
profileId: nextProfileId,
});
}
} finally {
setPendingProfileId(null);
}
};
const handleNewSession = () => {
setSidebarOpen(false);
createRequestKeyRef.current = null;
void navigate("/sessions");
};
const handleDeleteSession = async () => {
if (!pendingDeleteSession) return;
const deletingActive = pendingDeleteSession.session_id === routeSessionId;
await deleteSessionMutation.mutateAsync(pendingDeleteSession.session_id);
client.setQueryData<SessionRecord[] | undefined>(["sessions"], (sessions) =>
(sessions ?? []).filter((session) => session.session_id !== pendingDeleteSession.session_id),
);
setPendingDeleteSession(null);
await client.invalidateQueries({ queryKey: ["sessions"] });
if (deletingActive) {
void navigate("/sessions", { replace: true });
}
};
const canDeleteActiveSession = Boolean(routeSessionId && activeSessionRecord);
const isDeleteBusy = deleteSessionMutation.isPending || createSessionMutation.isPending;
const sessionDetailError = routeSessionId ? sessionDetailQuery.error : liveSessionDetailQuery.error;
const sessionNotFound =
sessionDetailError instanceof ApiError && sessionDetailError.status === 404;
const sessionDetailLoadError =
(routeSessionId || routeLiveSessionId) && sessionDetailError && !sessionNotFound
? "Unable to load this session right now."
: null;
return (
<section className={`session-layout ${sidebarOpen ? "session-layout--sidebar-open" : ""}`}>
<div className={`sidebar ${sidebarOpen ? "sidebar--open" : ""}`}>
<SessionSidebar
sessions={sessionsQuery.data ?? []}
isLoading={sessionsQuery.isLoading}
activeSessionId={routeSessionId ?? sessionState?.sessionId ?? null}
workspaceRoot={workspaceRoot}
onNewSession={handleNewSession}
onResumeSession={(sessionId) => {
void navigate(`/sessions/${encodeURIComponent(sessionId)}`);
setSidebarOpen(false);
}}
onDeleteSession={(session) => {
deleteSessionMutation.reset();
setPendingDeleteSession(session);
}}
onToggle={() => setSidebarOpen((prev) => !prev)}
isOpen={sidebarOpen}
/>
</div>
<div className="session-panel">
<div className="session-topbar">
<div className="session-topbar__leading">
<ConnectionBadge connection={sessionState?.connection ?? "disconnected"} />
<ProfileSelector
selectedProfileId={selectedProfileId}
modelProfiles={modelProfiles}
isLoading={configQuery.isPending}
disabled={profileSelectorDisabled}
onChange={(id) => {
void handleProfileChange(id);
}}
/>
</div>
<div className="session-topbar__actions">
<UsageBar
sessionUsage={sessionState?.sessionUsage ?? null}
turnUsage={sessionState?.turnUsage ?? null}
/>
{routeSessionId ? (
<RunHistory sessionId={routeSessionId} />
) : null}
{canDeleteActiveSession ? (
<button
type="button"
className="btn btn--ghost btn--icon btn--danger"
title="Delete session"
onClick={() => {
if (activeSessionRecord) {
deleteSessionMutation.reset();
setPendingDeleteSession(activeSessionRecord);
}
}}
>
<svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round">
<polyline points="3 6 5 6 21 6" />
<path d="M19 6v14a2 2 0 0 1-2 2H7a2 2 0 0 1-2-2V6m3 0V4a2 2 0 0 1 2-2h4a2 2 0 0 1 2 2v2" />
<line x1="10" y1="11" x2="10" y2="17" />
<line x1="14" y1="11" x2="14" y2="17" />
</svg>
</button>
) : null}
</div>
</div>
{inputWarnings.length > 0 ? (
<div className="banner banner--notice">{inputWarnings.join(" ")}</div>
) : null}
{sessionState?.fatalError ? (
<div className="banner banner--error">{sessionState.fatalError}</div>
) : null}
{createSessionMutation.error ? (
<div className="banner banner--error">{createSessionMutation.error.message}</div>
) : null}
{setSessionProfileMutation.error ? (
<div className="banner banner--error">{setSessionProfileMutation.error.message}</div>
) : null}
{setActiveProfileMutation.error ? (
<div className="banner banner--error">{setActiveProfileMutation.error.message}</div>
) : null}
{sessionDetailLoadError ? (
<div className="banner banner--error">{sessionDetailLoadError}</div>
) : null}
{sessionNotFound ? (
<div className="empty-state">
<div className="empty-state__title">Session not found</div>
<div className="empty-state__description">
{sessionDetailError instanceof Error
? sessionDetailError.message
: "This session does not exist in the current workspace."}
</div>
<button
type="button"
className="btn btn--primary empty-state__action"
onClick={handleNewSession}
>
Start new session
</button>
</div>
) : (
<>
<SessionTimeline
items={sessionState?.items ?? []}
itemsVersion={sessionState?.itemsVersion ?? 0}
subAgents={sessionState?.subAgents ?? {}}
connection={sessionState?.connection ?? "disconnected"}
waitMessage={sessionState?.waitMessage ?? null}
/>
<Composer
ref={composerRef}
inputEnabled={sessionState?.inputEnabled ?? false}
sessionEnded={sessionState?.sessionEnded ?? false}
liveSessionId={sessionState?.liveSessionId ?? null}
supportsImageInputs={providerSupportsImages}
isSubmitting={sendInputMutation.isPending}
onSubmit={handleSubmit}
/>
</>
)}
</div>
{pendingDeleteSession ? (
<DeleteSessionModal
session={pendingDeleteSession}
isDeleting={isDeleteBusy}
error={deleteSessionMutation.error?.message ?? null}
onConfirm={() => {
void handleDeleteSession();
}}
onClose={() => {
if (!isDeleteBusy) {
deleteSessionMutation.reset();
setPendingDeleteSession(null);
}
}}
/>
) : null}
</section>
);
}
function mapHistoryItem(item: HistoryItem): TimelineItem {
return {
kind: "message",
itemId: item.item_id,
role: item.role,
content: item.content,
filePaths: item.file_paths,
imageAttachments: item.image_attachments,
markdown: item.markdown,
};
}
function resolveSavedProfileId(
candidateId: string | null,
modelProfiles: ModelProfileView[],
): string | null {
return candidateId && modelProfiles.some((profile) => profile.id === candidateId)
? candidateId
: null;
}
function ProfileSelector({
selectedProfileId,
modelProfiles,
isLoading,
disabled,
onChange,
}: {
selectedProfileId: string;
modelProfiles: ModelProfileView[];
isLoading: boolean;
disabled: boolean;
onChange: (profileId: string) => void;
}) {
const [isOpen, setIsOpen] = useState(false);
const containerRef = useRef<HTMLDivElement>(null);
useEffect(() => {
if (!isOpen) return undefined;
const handlePointerDown = (event: PointerEvent) => {
if (
containerRef.current
&& event.target instanceof Node
&& !containerRef.current.contains(event.target)
) {
setIsOpen(false);
}
};
document.addEventListener("pointerdown", handlePointerDown);
return () => document.removeEventListener("pointerdown", handlePointerDown);
}, [isOpen]);
const selectedProfile = modelProfiles.find((profile) => profile.id === selectedProfileId);
const label = isLoading && modelProfiles.length === 0
? "Loading…"
: modelProfiles.length === 0
? "No profiles"
: selectedProfile
? selectedProfile.name
: selectedProfileId
? "Unavailable"
: "Select profile";
return (
<div className={`profile-selector${isOpen ? " is-open" : ""}`} ref={containerRef}>
<button
type="button"
className="profile-selector__trigger"
onClick={() => setIsOpen((value) => !value)}
disabled={disabled}
aria-haspopup="listbox"
aria-expanded={isOpen}
aria-label={`Model profile: ${label}`}
>
<svg className="profile-selector__icon" width="13" height="13" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round" aria-hidden="true">
<rect x="4" y="4" width="16" height="16" rx="2" />
<rect x="9" y="9" width="6" height="6" />
<line x1="9" y1="2" x2="9" y2="4" />
<line x1="15" y1="2" x2="15" y2="4" />
<line x1="9" y1="20" x2="9" y2="22" />
<line x1="15" y1="20" x2="15" y2="22" />
<line x1="2" y1="9" x2="4" y2="9" />
<line x1="2" y1="15" x2="4" y2="15" />
<line x1="20" y1="9" x2="22" y2="9" />
<line x1="20" y1="15" x2="22" y2="15" />
</svg>
<span className="profile-selector__name">{label}</span>
<svg className="profile-selector__chevron" width="12" height="12" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2.5" strokeLinecap="round" strokeLinejoin="round" aria-hidden="true">
<polyline points="6 9 12 15 18 9" />
</svg>
</button>
{isOpen && modelProfiles.length > 0 ? (
<div className="profile-selector__dropdown" role="listbox" aria-label="Model profiles">
{modelProfiles.map((profile) => {
const isSelected = profile.id === selectedProfileId;
return (
<button
key={profile.id}
type="button"
role="option"
aria-selected={isSelected}
className={`profile-selector__option${isSelected ? " is-selected" : ""}`}
onClick={() => {
onChange(profile.id);
setIsOpen(false);
}}
>
<span className="profile-selector__option-check">
{isSelected ? (
<svg width="11" height="11" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="3" strokeLinecap="round" strokeLinejoin="round" className="profile-selector__check" aria-hidden="true">
<polyline points="20 6 9 17 4 12" />
</svg>
) : null}
</span>
<span className="profile-selector__option-body">
<span className="profile-selector__option-name">{profile.name}</span>
<span className="profile-selector__option-meta">
<span>{profile.provider.name}</span>
{profile.model ? (
<>
<span className="profile-selector__dot" aria-hidden="true">·</span>
<span>{profile.model}</span>
</>
) : null}
{profile.reasoning_effort ? (
<>
<span className="profile-selector__dot" aria-hidden="true">·</span>
<span>{profile.reasoning_effort}</span>
</>
) : null}
</span>
</span>
</button>
);
})}
</div>
) : null}
</div>
);
}
|