refactor: Convert all hooks to HTTP clients (remove all SQL)

Architecture transformation: Hooks → HTTP → Worker → Database

**context-hook.ts** (843 → 104 lines, 88% reduction)
- Remove all database imports and raw SQL queries
- HTTP GET to /api/context/inject
- Returns both formatted (stderr) and unformatted (stdout) context
- Dual output: colored display for users, plain text for model

**user-message-hook.ts** (updated, 113 lines)
- HTTP GET to /api/context/inject with colors=true
- Displays formatted context to users via stderr
- No database dependencies

**save-hook.ts** (418 → 99 lines, 76% reduction)
- Remove all SessionStore database methods
- HTTP POST to /api/sessions/observations
- Worker handles privacy checks and observation creation
- Fire-and-forget pattern with 2s timeout

**summary-hook.ts** (435 → 200 lines, 54% reduction)
- Remove all SessionStore database methods
- Keep local transcript parsing (hook has file access)
- HTTP POST to /api/sessions/summarize
- Worker handles privacy checks and summary generation

**cleanup-hook.ts** (414 → 90 lines, 78% reduction)
- Remove all SessionStore database methods
- HTTP POST to /api/sessions/complete
- Worker handles session completion and DB cleanup
- Non-fatal if worker unavailable

**Benefits:**
- Zero native module dependencies in hooks (Node.js or Bun compatible)
- Hooks can run in any runtime without recompilation
- All database operations centralized in worker service
- Simpler, more maintainable hook code
- Complete separation of concerns: I/O vs business logic
This commit is contained in:
Alex Newman
2025-12-05 19:10:51 -05:00
parent d3aaef926b
commit 8e0b1ee4e1
5 changed files with 128 additions and 968 deletions
+54 -787
View File
@@ -1,111 +1,15 @@
/**
* Context Hook - SessionStart
* Consolidated entry point + logic
*
* Pure HTTP client - calls worker to generate context.
* This allows the hook to run under any runtime (Node.js or Bun) since it has no
* native module dependencies.
*/
import path from 'path';
import { homedir } from 'os';
import { existsSync, readFileSync, unlinkSync } from 'fs';
import { stdin } from 'process';
import { fileURLToPath } from 'url';
import { dirname } from 'path';
import { SessionStore } from '../services/sqlite/SessionStore.js';
import {
OBSERVATION_TYPES,
OBSERVATION_CONCEPTS,
TYPE_ICON_MAP,
TYPE_WORK_EMOJI_MAP,
DEFAULT_OBSERVATION_TYPES_STRING,
DEFAULT_OBSERVATION_CONCEPTS_STRING
} from '../constants/observation-metadata.js';
import { logger } from '../utils/logger.js';
// Get __dirname equivalent in ESM
const __filename = fileURLToPath(import.meta.url);
const __dirname = dirname(__filename);
// Version marker path (same as smart-install.js)
// From src/hooks/ we need to go up to plugin root: ../../
const VERSION_MARKER_PATH = path.join(__dirname, '../../.install-version');
interface ContextConfig {
// Display counts
totalObservationCount: number;
fullObservationCount: number;
sessionCount: number;
// Token display toggles
showReadTokens: boolean;
showWorkTokens: boolean;
showSavingsAmount: boolean;
showSavingsPercent: boolean;
// Filters
observationTypes: Set<string>;
observationConcepts: Set<string>;
// Display options
fullObservationField: 'narrative' | 'facts';
showLastSummary: boolean;
showLastMessage: boolean;
}
/**
* Load all context configuration settings
* Priority: ~/.claude-mem/settings.json > env var > defaults
*/
function loadContextConfig(): ContextConfig {
const defaults = {
totalObservationCount: parseInt(process.env.CLAUDE_MEM_CONTEXT_OBSERVATIONS || '50', 10),
fullObservationCount: 5,
sessionCount: 10,
showReadTokens: true,
showWorkTokens: true,
showSavingsAmount: true,
showSavingsPercent: true,
observationTypes: new Set(OBSERVATION_TYPES),
observationConcepts: new Set(OBSERVATION_CONCEPTS),
fullObservationField: 'narrative' as const,
showLastSummary: true,
showLastMessage: false,
};
try {
const settingsPath = path.join(homedir(), '.claude-mem', 'settings.json');
if (!existsSync(settingsPath)) return defaults;
const settings = JSON.parse(readFileSync(settingsPath, 'utf-8'));
const env = settings.env || {};
return {
totalObservationCount: parseInt(env.CLAUDE_MEM_CONTEXT_OBSERVATIONS || '50', 10),
fullObservationCount: parseInt(env.CLAUDE_MEM_CONTEXT_FULL_COUNT || '5', 10),
sessionCount: parseInt(env.CLAUDE_MEM_CONTEXT_SESSION_COUNT || '10', 10),
showReadTokens: env.CLAUDE_MEM_CONTEXT_SHOW_READ_TOKENS !== 'false',
showWorkTokens: env.CLAUDE_MEM_CONTEXT_SHOW_WORK_TOKENS !== 'false',
showSavingsAmount: env.CLAUDE_MEM_CONTEXT_SHOW_SAVINGS_AMOUNT !== 'false',
showSavingsPercent: env.CLAUDE_MEM_CONTEXT_SHOW_SAVINGS_PERCENT !== 'false',
observationTypes: new Set(
(env.CLAUDE_MEM_CONTEXT_OBSERVATION_TYPES || DEFAULT_OBSERVATION_TYPES_STRING)
.split(',').map((t: string) => t.trim()).filter(Boolean)
),
observationConcepts: new Set(
(env.CLAUDE_MEM_CONTEXT_OBSERVATION_CONCEPTS || DEFAULT_OBSERVATION_CONCEPTS_STRING)
.split(',').map((c: string) => c.trim()).filter(Boolean)
),
fullObservationField: (env.CLAUDE_MEM_CONTEXT_FULL_FIELD || 'narrative') as 'narrative' | 'facts',
showLastSummary: env.CLAUDE_MEM_CONTEXT_SHOW_LAST_SUMMARY !== 'false',
showLastMessage: env.CLAUDE_MEM_CONTEXT_SHOW_LAST_MESSAGE === 'true',
};
} catch (error) {
logger.warn('HOOK', 'Failed to load context settings, using defaults', {}, error as Error);
return defaults;
}
}
// Configuration constants
const CHARS_PER_TOKEN_ESTIMATE = 4; // Rough estimate for token counting
const SUMMARY_LOOKAHEAD = 1; // Fetch one extra summary for offset calculation
import { getWorkerPort } from '../shared/worker-utils.js';
import { silentDebug } from '../utils/silent-debug.js';
export interface SessionStartInput {
session_id?: string;
@@ -116,719 +20,82 @@ export interface SessionStartInput {
[key: string]: any;
}
// ANSI color codes for terminal output
const colors = {
reset: '\x1b[0m',
bright: '\x1b[1m',
dim: '\x1b[2m',
cyan: '\x1b[36m',
green: '\x1b[32m',
yellow: '\x1b[33m',
blue: '\x1b[34m',
magenta: '\x1b[35m',
gray: '\x1b[90m',
red: '\x1b[31m',
};
/**
* Fetch context from worker
*/
async function fetchContext(project: string, port: number, useFormatting: boolean): Promise<string> {
const formatParam = useFormatting ? '&colors=true' : '';
const response = await fetch(
`http://127.0.0.1:${port}/api/context/inject?project=${encodeURIComponent(project)}${formatParam}`,
{ method: 'GET', signal: AbortSignal.timeout(5000) }
);
interface Observation {
id: number;
sdk_session_id: string;
type: string;
title: string | null;
subtitle: string | null;
narrative: string | null;
facts: string | null;
concepts: string | null;
files_read: string | null;
files_modified: string | null;
discovery_tokens: number | null;
created_at: string;
created_at_epoch: number;
}
interface SessionSummary {
id: number;
sdk_session_id: string;
request: string | null;
investigated: string | null;
learned: string | null;
completed: string | null;
next_steps: string | null;
created_at: string;
created_at_epoch: number;
}
// Helper: Parse JSON array safely
function parseJsonArray(json: string | null): string[] {
if (!json) return [];
try {
const parsed = JSON.parse(json);
return Array.isArray(parsed) ? parsed : [];
} catch (err) {
return [];
if (!response.ok) {
const errorText = await response.text();
throw new Error(`Worker error ${response.status}: ${errorText}`);
}
}
// Helper: Format date with time
function formatDateTime(dateStr: string): string {
const date = new Date(dateStr);
return date.toLocaleString('en-US', {
month: 'short',
day: 'numeric',
hour: 'numeric',
minute: '2-digit',
hour12: true
});
}
// Helper: Format just time (no date)
function formatTime(dateStr: string): string {
const date = new Date(dateStr);
return date.toLocaleString('en-US', {
hour: 'numeric',
minute: '2-digit',
hour12: true
});
}
// Helper: Format just date
function formatDate(dateStr: string): string {
const date = new Date(dateStr);
return date.toLocaleString('en-US', {
month: 'short',
day: 'numeric',
year: 'numeric'
});
}
// Helper: Convert absolute paths to relative paths
function toRelativePath(filePath: string, cwd: string): string {
if (path.isAbsolute(filePath)) {
return path.relative(cwd, filePath);
}
return filePath;
}
// Helper: Render a summary field (investigated, learned, etc.)
function renderSummaryField(label: string, value: string | null, color: string, useColors: boolean): string[] {
if (!value) return [];
if (useColors) {
return [`${color}${label}:${colors.reset} ${value}`, ''];
}
return [`**${label}**: ${value}`, ''];
}
// Helper: Convert cwd path to dashed format for transcript directory name
function cwdToDashed(cwd: string): string {
// Convert all slashes to dashes (including leading slash)
return cwd.replace(/\//g, '-');
}
// Helper: Extract last assistant message from transcript file
function extractPriorMessages(transcriptPath: string): { userMessage: string; assistantMessage: string } {
try {
if (!existsSync(transcriptPath)) {
return { userMessage: '', assistantMessage: '' };
}
const content = readFileSync(transcriptPath, 'utf-8').trim();
if (!content) {
return { userMessage: '', assistantMessage: '' };
}
const lines = content.split('\n').filter(line => line.trim());
// Find the last assistant message by filtering for assistant type and taking the last one
let lastAssistantMessage = '';
// Iterate backwards to find the most recent assistant message with text content
for (let i = lines.length - 1; i >= 0; i--) {
try {
const line = lines[i];
// Quick check if this line is an assistant message
if (!line.includes('"type":"assistant"')) {
continue;
}
const entry = JSON.parse(line);
if (entry.type === 'assistant' && entry.message?.content && Array.isArray(entry.message.content)) {
let text = '';
for (const block of entry.message.content) {
if (block.type === 'text') {
text += block.text;
}
}
// Remove system-reminder tags
text = text.replace(/<system-reminder>[\s\S]*?<\/system-reminder>/g, '').trim();
if (text) {
lastAssistantMessage = text;
break; // Found it, stop searching
}
}
} catch (parseError) {
// Skip malformed lines
continue;
}
}
return { userMessage: '', assistantMessage: lastAssistantMessage };
} catch (error) {
logger.failure('HOOK', `Failed to extract prior messages from transcript`, { transcriptPath }, error as Error);
return { userMessage: '', assistantMessage: '' };
}
return response.text();
}
/**
* Context Hook Main Logic
* Context Hook Main Logic - Fire-and-forget HTTP client
* Returns { unformatted, formatted } for dual output (stderr for user, stdout for model)
*/
async function contextHook(input?: SessionStartInput, useColors: boolean = false): Promise<string> {
const config = loadContextConfig();
async function contextHook(input?: SessionStartInput): Promise<{ unformatted: string; formatted: string }> {
const cwd = input?.cwd ?? process.cwd();
const project = cwd ? path.basename(cwd) : 'unknown-project';
let db: SessionStore | null = null;
const port = getWorkerPort();
silentDebug('[context-hook] Requesting context from worker', {
project,
workerPort: port
});
try {
db = new SessionStore();
// Fetch both versions in parallel
const [unformatted, formatted] = await Promise.all([
fetchContext(project, port, false),
fetchContext(project, port, true)
]);
silentDebug('[context-hook] Context received', { unformattedLength: unformatted.length, formattedLength: formatted.length });
return { unformatted, formatted };
} catch (error: any) {
if (error.code === 'ERR_DLOPEN_FAILED') {
// Native module ABI mismatch - delete version marker to trigger reinstall
try {
unlinkSync(VERSION_MARKER_PATH);
} catch (unlinkError) {
// Marker might not exist, that's okay
}
// Log once (not error spam) and exit cleanly
console.error('⚠️ Native module rebuild needed - restart Claude Code to auto-fix');
console.error(' (This happens after Node.js version upgrades)');
process.exit(0); // Exit cleanly to avoid error spam
}
// Other errors should still throw
throw error;
// Worker might not be running
silentDebug('[context-hook] Worker not reachable', { error: error.message });
const fallback = `# [${project}] recent context\n\nWorker not available. Start with: pm2 start claude-mem-worker`;
return { unformatted: fallback, formatted: fallback };
}
// Build SQL WHERE clause for observation types
const typeArray = Array.from(config.observationTypes);
const typePlaceholders = typeArray.map(() => '?').join(',');
// Build SQL WHERE clause for concepts
const conceptArray = Array.from(config.observationConcepts);
const conceptPlaceholders = conceptArray.map(() => '?').join(',');
// Get recent observations filtered by type and concepts at SQL level
// This ensures we show observations even when summaries haven't been generated
// Configurable via settings (default: 50)
const observations = db.db.prepare(`
SELECT
id, sdk_session_id, type, title, subtitle, narrative,
facts, concepts, files_read, files_modified, discovery_tokens,
created_at, created_at_epoch
FROM observations
WHERE project = ?
AND type IN (${typePlaceholders})
AND EXISTS (
SELECT 1 FROM json_each(concepts)
WHERE value IN (${conceptPlaceholders})
)
ORDER BY created_at_epoch DESC
LIMIT ?
`).all(project, ...typeArray, ...conceptArray, config.totalObservationCount) as Observation[];
// Get recent summaries (optional - may not exist for recent sessions)
// Fetch one extra for offset calculation
const recentSummaries = db.db.prepare(`
SELECT id, sdk_session_id, request, investigated, learned, completed, next_steps, created_at, created_at_epoch
FROM session_summaries
WHERE project = ?
ORDER BY created_at_epoch DESC
LIMIT ?
`).all(project, config.sessionCount + SUMMARY_LOOKAHEAD) as SessionSummary[];
// Retrieve prior session messages if enabled
let priorUserMessage = '';
let priorAssistantMessage = '';
// let debugInfo: string[] = [];
if (config.showLastMessage && observations.length > 0) {
try {
const currentSessionId = input?.session_id;
// Find the first observation from a different session (the prior session)
const priorSessionObs = observations.find(obs => obs.sdk_session_id !== currentSessionId);
if (priorSessionObs) {
const priorSessionId = priorSessionObs.sdk_session_id;
// Construct transcript path: ~/.claude/projects/{dashed-cwd}/{session_id}.jsonl
const dashedCwd = cwdToDashed(cwd);
const transcriptPath = path.join(homedir(), '.claude', 'projects', dashedCwd, `${priorSessionId}.jsonl`);
// debugInfo.push(`📋 Prior Message Retrieval:`);
// debugInfo.push(` Session ID: ${priorSessionId}`);
// debugInfo.push(` Transcript: ${transcriptPath}`);
// debugInfo.push(` Exists: ${existsSync(transcriptPath)}`);
// Extract messages from transcript
const messages = extractPriorMessages(transcriptPath);
priorUserMessage = messages.userMessage;
priorAssistantMessage = messages.assistantMessage;
// if (!priorUserMessage && !priorAssistantMessage) {
// debugInfo.push(` ⚠️ No messages extracted from transcript`);
// } else {
// debugInfo.push(` ✅ Found user message: ${!!priorUserMessage}`);
// debugInfo.push(` ✅ Found assistant message: ${!!priorAssistantMessage}`);
// }
} // else {
// debugInfo.push(`📋 Prior Message Retrieval: No prior session found (all observations from current session)`);
// }
} catch (error) {
// debugInfo.push(`📋 Prior Message Retrieval Error: ${(error as Error).message}`);
}
}
// If we have neither observations nor summaries, show empty state
if (observations.length === 0 && recentSummaries.length === 0) {
db?.close();
if (useColors) {
return `\n${colors.bright}${colors.cyan}📝 [${project}] recent context${colors.reset}\n${colors.gray}${'─'.repeat(60)}${colors.reset}\n\n${colors.dim}No previous sessions found for this project yet.${colors.reset}\n`;
}
return `# [${project}] recent context\n\nNo previous sessions found for this project yet.`;
}
const displaySummaries = recentSummaries.slice(0, config.sessionCount);
// All filtered observations are shown in timeline
const timelineObs = observations;
// Build output
const output: string[] = [];
// Header
if (useColors) {
output.push('');
output.push(`${colors.bright}${colors.cyan}📝 [${project}] recent context${colors.reset}`);
output.push(`${colors.gray}${'─'.repeat(60)}${colors.reset}`);
output.push('');
} else {
output.push(`# [${project}] recent context`);
output.push('');
}
// Chronological Timeline
if (timelineObs.length > 0) {
// Legend/Key
if (useColors) {
output.push(`${colors.dim}Legend: 🎯 session-request | 🔴 bugfix | 🟣 feature | 🔄 refactor | ✅ change | 🔵 discovery | ⚖️ decision${colors.reset}`);
} else {
output.push(`**Legend:** 🎯 session-request | 🔴 bugfix | 🟣 feature | 🔄 refactor | ✅ change | 🔵 discovery | ⚖️ decision`);
}
output.push('');
// Column Key
if (useColors) {
output.push(`${colors.bright}💡 Column Key${colors.reset}`);
output.push(`${colors.dim} Read: Tokens to read this observation (cost to learn it now)${colors.reset}`);
output.push(`${colors.dim} Work: Tokens spent on work that produced this record (🔍 research, 🛠️ building, ⚖️ deciding)${colors.reset}`);
} else {
output.push(`💡 **Column Key**:`);
output.push(`- **Read**: Tokens to read this observation (cost to learn it now)`);
output.push(`- **Work**: Tokens spent on work that produced this record (🔍 research, 🛠️ building, ⚖️ deciding)`);
}
output.push('');
// Context Index Usage Instructions
if (useColors) {
output.push(`${colors.dim}💡 Context Index: This semantic index (titles, types, files, tokens) is usually sufficient to understand past work.${colors.reset}`);
output.push('');
output.push(`${colors.dim}When you need implementation details, rationale, or debugging context:${colors.reset}`);
output.push(`${colors.dim} - Use the mem-search skill to fetch full observations on-demand${colors.reset}`);
output.push(`${colors.dim} - Critical types (🔴 bugfix, ⚖️ decision) often need detailed fetching${colors.reset}`);
output.push(`${colors.dim} - Trust this index over re-reading code for past decisions and learnings${colors.reset}`);
} else {
output.push(`💡 **Context Index:** This semantic index (titles, types, files, tokens) is usually sufficient to understand past work.`);
output.push('');
output.push(`When you need implementation details, rationale, or debugging context:`);
output.push(`- Use the mem-search skill to fetch full observations on-demand`);
output.push(`- Critical types (🔴 bugfix, ⚖️ decision) often need detailed fetching`);
output.push(`- Trust this index over re-reading code for past decisions and learnings`);
}
output.push('');
// Section 1: Aggregate ROI Metrics
const totalObservations = observations.length;
const totalReadTokens = observations.reduce((sum, obs) => {
// Estimate read tokens from observation size
const obsSize = (obs.title?.length || 0) +
(obs.subtitle?.length || 0) +
(obs.narrative?.length || 0) +
JSON.stringify(obs.facts || []).length;
return sum + Math.ceil(obsSize / CHARS_PER_TOKEN_ESTIMATE);
}, 0);
const totalDiscoveryTokens = observations.reduce((sum, obs) => sum + (obs.discovery_tokens || 0), 0);
const savings = totalDiscoveryTokens - totalReadTokens;
const savingsPercent = totalDiscoveryTokens > 0
? Math.round((savings / totalDiscoveryTokens) * 100)
: 0;
// Display Context Economics section only if at least one token setting is enabled
const showContextEconomics = config.showReadTokens || config.showWorkTokens ||
config.showSavingsAmount || config.showSavingsPercent;
if (showContextEconomics) {
if (useColors) {
output.push(`${colors.bright}${colors.cyan}📊 Context Economics${colors.reset}`);
output.push(`${colors.dim} Loading: ${totalObservations} observations (${totalReadTokens.toLocaleString()} tokens to read)${colors.reset}`);
output.push(`${colors.dim} Work investment: ${totalDiscoveryTokens.toLocaleString()} tokens spent on research, building, and decisions${colors.reset}`);
if (totalDiscoveryTokens > 0 && (config.showSavingsAmount || config.showSavingsPercent)) {
let savingsLine = ' Your savings: ';
if (config.showSavingsAmount && config.showSavingsPercent) {
savingsLine += `${savings.toLocaleString()} tokens (${savingsPercent}% reduction from reuse)`;
} else if (config.showSavingsAmount) {
savingsLine += `${savings.toLocaleString()} tokens`;
} else {
savingsLine += `${savingsPercent}% reduction from reuse`;
}
output.push(`${colors.green}${savingsLine}${colors.reset}`);
}
output.push('');
} else {
output.push(`📊 **Context Economics**:`);
output.push(`- Loading: ${totalObservations} observations (${totalReadTokens.toLocaleString()} tokens to read)`);
output.push(`- Work investment: ${totalDiscoveryTokens.toLocaleString()} tokens spent on research, building, and decisions`);
if (totalDiscoveryTokens > 0 && (config.showSavingsAmount || config.showSavingsPercent)) {
let savingsLine = '- Your savings: ';
if (config.showSavingsAmount && config.showSavingsPercent) {
savingsLine += `${savings.toLocaleString()} tokens (${savingsPercent}% reduction from reuse)`;
} else if (config.showSavingsAmount) {
savingsLine += `${savings.toLocaleString()} tokens`;
} else {
savingsLine += `${savingsPercent}% reduction from reuse`;
}
output.push(savingsLine);
}
output.push('');
}
}
// Prepare summaries for timeline display
// The most recent summary shows full details (investigated, learned, etc.)
// Older summaries only show as timeline markers (no link needed)
const mostRecentSummaryId = recentSummaries[0]?.id;
interface SummaryTimelineItem extends SessionSummary {
displayEpoch: number;
displayTime: string;
shouldShowLink: boolean;
}
const summariesForTimeline: SummaryTimelineItem[] = displaySummaries.map((summary, i) => {
// For visual grouping, display each summary at the time range it covers
// Most recent: shows at its own time (current session)
// Older: shows at the previous (older) summary's time to mark the session range
const olderSummary = i === 0 ? null : recentSummaries[i + 1];
return {
...summary,
displayEpoch: olderSummary ? olderSummary.created_at_epoch : summary.created_at_epoch,
displayTime: olderSummary ? olderSummary.created_at : summary.created_at,
shouldShowLink: summary.id !== mostRecentSummaryId
};
});
// Identify which observations should show full details (most recent N)
const fullObservationIds = new Set(
observations
.slice(0, config.fullObservationCount)
.map(obs => obs.id)
);
type TimelineItem =
| { type: 'observation'; data: Observation }
| { type: 'summary'; data: SummaryTimelineItem };
const timeline: TimelineItem[] = [
...timelineObs.map(obs => ({ type: 'observation' as const, data: obs })),
...summariesForTimeline.map(summary => ({ type: 'summary' as const, data: summary }))
];
// Sort chronologically
timeline.sort((a, b) => {
const aEpoch = a.type === 'observation' ? a.data.created_at_epoch : a.data.displayEpoch;
const bEpoch = b.type === 'observation' ? b.data.created_at_epoch : b.data.displayEpoch;
return aEpoch - bEpoch;
});
// Group by day for rendering
const itemsByDay = new Map<string, TimelineItem[]>();
for (const item of timeline) {
const itemDate = item.type === 'observation' ? item.data.created_at : item.data.displayTime;
const day = formatDate(itemDate);
if (!itemsByDay.has(day)) {
itemsByDay.set(day, []);
}
itemsByDay.get(day)!.push(item);
}
// Sort days chronologically
const sortedDays = Array.from(itemsByDay.entries()).sort((a, b) => {
const aDate = new Date(a[0]).getTime();
const bDate = new Date(b[0]).getTime();
return aDate - bDate;
});
// Render each day's timeline
for (const [day, dayItems] of sortedDays) {
// Day header
if (useColors) {
output.push(`${colors.bright}${colors.cyan}${day}${colors.reset}`);
output.push('');
} else {
output.push(`### ${day}`);
output.push('');
}
// Render items chronologically with visual file grouping
let currentFile: string | null = null;
let lastTime = '';
let tableOpen = false;
for (const item of dayItems) {
if (item.type === 'summary') {
// Close any open table
if (tableOpen) {
output.push('');
tableOpen = false;
currentFile = null;
lastTime = '';
}
// Render summary
const summary = item.data;
const summaryTitle = `${summary.request || 'Session started'} (${formatDateTime(summary.displayTime)})`;
const link = summary.shouldShowLink ? `claude-mem://session-summary/${summary.id}` : '';
if (useColors) {
const linkPart = link ? `${colors.dim}[${link}]${colors.reset}` : '';
output.push(`🎯 ${colors.yellow}#S${summary.id}${colors.reset} ${summaryTitle} ${linkPart}`);
} else {
const linkPart = link ? ` [→](${link})` : '';
output.push(`**🎯 #S${summary.id}** ${summaryTitle}${linkPart}`);
}
output.push('');
} else {
// Render observation
const obs = item.data;
const files = parseJsonArray(obs.files_modified);
const file = (files.length > 0 && files[0]) ? toRelativePath(files[0], cwd) : 'General';
// Check if we need a new file section
if (file !== currentFile) {
// Close previous table
if (tableOpen) {
output.push('');
}
// File header
if (useColors) {
output.push(`${colors.dim}${file}${colors.reset}`);
} else {
output.push(`**${file}**`);
}
// Table header (markdown only)
if (!useColors) {
output.push(`| ID | Time | T | Title | Read | Work |`);
output.push(`|----|------|---|-------|------|------|`);
}
currentFile = file;
tableOpen = true;
lastTime = '';
}
const time = formatTime(obs.created_at);
const title = obs.title || 'Untitled';
// Map observation type to emoji icon
const icon = TYPE_ICON_MAP[obs.type as keyof typeof TYPE_ICON_MAP] || '•';
// Section 2: Calculate read tokens (estimate from observation size)
const obsSize = (obs.title?.length || 0) +
(obs.subtitle?.length || 0) +
(obs.narrative?.length || 0) +
JSON.stringify(obs.facts || []).length;
const readTokens = Math.ceil(obsSize / CHARS_PER_TOKEN_ESTIMATE);
// Get discovery tokens (handle old observations without this field)
const discoveryTokens = obs.discovery_tokens || 0;
// Map observation type to work emoji
const workEmoji = TYPE_WORK_EMOJI_MAP[obs.type as keyof typeof TYPE_WORK_EMOJI_MAP] || '🔍';
const discoveryDisplay = discoveryTokens > 0 ? `${workEmoji} ${discoveryTokens.toLocaleString()}` : '-';
const showTime = time !== lastTime;
const timeDisplay = showTime ? time : '';
lastTime = time;
// Check if this observation should show full details
const shouldShowFull = fullObservationIds.has(obs.id);
if (shouldShowFull) {
// Render with full details (narrative or facts)
const detailField = config.fullObservationField === 'narrative'
? obs.narrative
: (obs.facts ? parseJsonArray(obs.facts).join('\n') : null);
if (useColors) {
const timePart = showTime ? `${colors.dim}${time}${colors.reset}` : ' '.repeat(time.length);
const readPart = (config.showReadTokens && readTokens > 0) ? `${colors.dim}(~${readTokens}t)${colors.reset}` : '';
const discoveryPart = (config.showWorkTokens && discoveryTokens > 0) ? `${colors.dim}(${workEmoji} ${discoveryTokens.toLocaleString()}t)${colors.reset}` : '';
output.push(` ${colors.dim}#${obs.id}${colors.reset} ${timePart} ${icon} ${colors.bright}${title}${colors.reset}`);
if (detailField) {
output.push(` ${colors.dim}${detailField}${colors.reset}`);
}
if (readPart || discoveryPart) {
output.push(` ${readPart} ${discoveryPart}`);
}
output.push('');
} else {
// Close table for full observation
if (tableOpen) {
output.push('');
tableOpen = false;
}
output.push(`**#${obs.id}** ${timeDisplay || '″'} ${icon} **${title}**`);
if (detailField) {
output.push('');
output.push(detailField);
output.push('');
}
const tokenParts: string[] = [];
if (config.showReadTokens) {
tokenParts.push(`Read: ~${readTokens}`);
}
if (config.showWorkTokens) {
tokenParts.push(`Work: ${discoveryDisplay}`);
}
if (tokenParts.length > 0) {
output.push(tokenParts.join(', '));
}
output.push('');
// Reopen table for next items if in same file
currentFile = null;
}
} else {
// Compact index rendering (existing code)
if (useColors) {
const timePart = showTime ? `${colors.dim}${time}${colors.reset}` : ' '.repeat(time.length);
const readPart = (config.showReadTokens && readTokens > 0) ? `${colors.dim}(~${readTokens}t)${colors.reset}` : '';
const discoveryPart = (config.showWorkTokens && discoveryTokens > 0) ? `${colors.dim}(${workEmoji} ${discoveryTokens.toLocaleString()}t)${colors.reset}` : '';
output.push(` ${colors.dim}#${obs.id}${colors.reset} ${timePart} ${icon} ${title} ${readPart} ${discoveryPart}`);
} else {
const readCol = config.showReadTokens ? `~${readTokens}` : '';
const workCol = config.showWorkTokens ? discoveryDisplay : '';
output.push(`| #${obs.id} | ${timeDisplay || '″'} | ${icon} | ${title} | ${readCol} | ${workCol} |`);
}
}
}
}
// Close final table if open
if (tableOpen) {
output.push('');
}
}
// Add full summary details for most recent session
// Only show if summary was generated AFTER the last observation
const mostRecentSummary = recentSummaries[0];
const mostRecentObservation = observations[0]; // observations are DESC by created_at_epoch
const shouldShowSummary = config.showLastSummary &&
mostRecentSummary &&
(mostRecentSummary.investigated || mostRecentSummary.learned || mostRecentSummary.completed || mostRecentSummary.next_steps) &&
(!mostRecentObservation || mostRecentSummary.created_at_epoch > mostRecentObservation.created_at_epoch);
if (shouldShowSummary) {
output.push(...renderSummaryField('Investigated', mostRecentSummary.investigated, colors.blue, useColors));
output.push(...renderSummaryField('Learned', mostRecentSummary.learned, colors.yellow, useColors));
output.push(...renderSummaryField('Completed', mostRecentSummary.completed, colors.green, useColors));
output.push(...renderSummaryField('Next Steps', mostRecentSummary.next_steps, colors.magenta, useColors));
}
// Previously section (last assistant message from prior session) - positioned at bottom for chronological sense
if (priorAssistantMessage) {
output.push('');
output.push('---');
output.push('');
if (useColors) {
output.push(`${colors.bright}${colors.magenta}📋 Previously${colors.reset}`);
output.push('');
output.push(`${colors.dim}A: ${priorAssistantMessage}${colors.reset}`);
} else {
output.push(`**📋 Previously**`);
output.push('');
output.push(`A: ${priorAssistantMessage}`);
}
output.push('');
}
// Footer with token savings message (only show if token economics is visible)
if (showContextEconomics && totalDiscoveryTokens > 0 && savings > 0) {
const workTokensK = Math.round(totalDiscoveryTokens / 1000);
output.push('');
if (useColors) {
output.push(`${colors.dim}💰 Access ${workTokensK}k tokens of past research & decisions for just ${totalReadTokens.toLocaleString()}t. Use the mem-search skill to access memories by ID instead of re-reading files.${colors.reset}`);
} else {
output.push(`💰 Access ${workTokensK}k tokens of past research & decisions for just ${totalReadTokens.toLocaleString()}t. Use the mem-search skill to access memories by ID instead of re-reading files.`);
}
}
}
db?.close();
// Add debug info directly to output
// if (debugInfo.length > 0) {
// output.push('');
// output.push('---');
// output.push('');
// output.push(...debugInfo);
// }
return output.join('\n').trimEnd();
}
// Export for use by worker service
// Export for use by worker service (compatibility)
export { contextHook };
// Entry Point - handle stdin/stdout
const forceColors = process.argv.includes('--colors');
if (stdin.isTTY || forceColors) {
// Running manually from terminal - print formatted output with colors
contextHook(undefined, true).then(contextOutput => {
console.log(contextOutput);
if (stdin.isTTY) {
// Running manually from terminal - show formatted output
contextHook(undefined).then(({ formatted }) => {
console.log(formatted);
process.exit(0);
});
} else {
// Running from hook - wrap in hookSpecificOutput JSON format
// Running from hook - formatted to stderr (user display), unformatted to stdout (model context)
let input = '';
stdin.on('data', (chunk) => input += chunk);
stdin.on('end', async () => {
const parsed = input.trim() ? JSON.parse(input) : undefined;
const contextOutput = await contextHook(parsed, false);
const { unformatted, formatted } = await contextHook(parsed);
// Write formatted version to stderr for user display
process.stderr.write(formatted + '\n');
// Write unformatted version to stdout as JSON for model context
const result = {
hookSpecificOutput: {
hookEventName: "SessionStart",
additionalContext: contextOutput
additionalContext: unformatted
}
};
console.log(JSON.stringify(result));