Files
openchamber/packages/ui/src/hooks/usePlanDetection.ts
T

49 lines
2.1 KiB
TypeScript

import React from 'react';
import { useSessionMessages } from '@/sync/sync-context';
import { getSyncParts } from '@/sync/sync-refs';
import { useSessionUIStore } from '@/sync/session-ui-store';
import { useFeatureFlagsStore } from '@/stores/useFeatureFlagsStore';
/**
* Watches session messages for plan creation and marks sessions as plan-available.
*
* This is the single source of truth for plan detection. When a plan_enter tool
* executes, it creates a synthetic message like "The plan at ${path}" or
* "User has requested to enter plan mode". We detect these and signal availability.
*
* The Header component subscribes to sessionPlanAvailable map to show/hide the Plan tab.
*/
export const usePlanDetection = (sessionId: string, directory?: string) => {
const planModeEnabled = useFeatureFlagsStore((state) => state.planModeEnabled);
const markSessionPlanAvailable = useSessionUIStore((state) => state.markSessionPlanAvailable);
const isSessionPlanAvailable = useSessionUIStore((state) => state.isSessionPlanAvailable);
const messages = useSessionMessages(sessionId, directory);
React.useEffect(() => {
// Early exit if plan mode is disabled - don't parse messages
if (!planModeEnabled) return;
if (!sessionId) return;
// Already marked as available - no need to check again
if (isSessionPlanAvailable(sessionId)) return;
// Scan messages for plan references
for (const message of messages) {
// Only check assistant messages for plan references
if (message.role !== 'assistant') continue;
const parts = getSyncParts(message.id, directory);
for (const part of parts) {
if (part.type !== 'text') continue;
const text = (part as { text?: string }).text || '';
// Check for plan file reference in synthetic messages
if (text.includes('The plan at ') || text.includes('User has requested to enter plan mode')) {
markSessionPlanAvailable(sessionId);
return;
}
}
}
}, [planModeEnabled, sessionId, directory, messages, markSessionPlanAvailable, isSessionPlanAvailable]);
};