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100 lines
3 KiB
Bash
Executable file
100 lines
3 KiB
Bash
Executable file
#!/bin/bash
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# SessionEnd Hook - Triggers learning extraction
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#
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# This hook runs automatically after each Claude Code session.
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# It spawns a background process to analyze the session and update learnings.
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#
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LOG_FILE="${CLAUDE_PROJECT_DIR:-.}/.claude/hooks/session-end.log"
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log() {
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echo "[$(date '+%Y-%m-%d %H:%M:%S')] $1" >> "$LOG_FILE"
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}
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# Read hook input from stdin (JSON with session info)
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INPUT=$(cat)
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log "Hook triggered with input: $INPUT"
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# Extract transcript path using jq (required dependency)
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if ! command -v jq &> /dev/null; then
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log "ERROR: jq not available"
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exit 0
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fi
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TRANSCRIPT=$(echo "$INPUT" | jq -r '.transcript_path // empty')
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SESSION_ID=$(echo "$INPUT" | jq -r '.session_id // empty')
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PROJECT_DIR="${CLAUDE_PROJECT_DIR:-.}"
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log "Transcript: $TRANSCRIPT"
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log "Session ID: $SESSION_ID"
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log "Project dir: $PROJECT_DIR"
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# Prevent duplicate triggers for the same session using a lock file
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LOCK_DIR="${CLAUDE_PROJECT_DIR:-.}/.claude/hooks/locks"
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mkdir -p "$LOCK_DIR"
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LOCK_FILE="$LOCK_DIR/$SESSION_ID.lock"
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if [ -f "$LOCK_FILE" ]; then
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log "Session already processed (lock exists) - skipping duplicate trigger"
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exit 0
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fi
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# Create lock file immediately
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echo "$(date)" > "$LOCK_FILE"
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log "Lock file created"
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# Clean up old lock files (older than 1 hour)
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find "$LOCK_DIR" -name "*.lock" -mmin +60 -delete 2>/dev/null
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# Validate transcript exists
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if [ -z "$TRANSCRIPT" ]; then
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log "ERROR: No transcript path in input"
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exit 0
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fi
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if [ ! -f "$TRANSCRIPT" ]; then
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log "ERROR: Transcript file does not exist: $TRANSCRIPT"
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exit 0
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fi
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# Only run retrospective if session was substantial (more than 10 lines)
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LINE_COUNT=$(wc -l < "$TRANSCRIPT" 2>/dev/null || echo "0")
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log "Transcript line count: $LINE_COUNT"
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if [ "$LINE_COUNT" -lt 10 ]; then
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log "Session too short, skipping retrospective"
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exit 0
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fi
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# CRITICAL: Detect if this session was itself a retrospective to prevent chain reaction
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# Check if the transcript contains /retrospective command (indicates this was a retrospective session)
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if grep -q '"/retrospective' "$TRANSCRIPT" 2>/dev/null || grep -q '"skill":"retrospective"' "$TRANSCRIPT" 2>/dev/null; then
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log "Session was a retrospective - skipping to prevent chain reaction"
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exit 0
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fi
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# Check if learnings.md exists (system is properly set up)
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LEARNINGS_FILE="$PROJECT_DIR/.claude/skills/codebase-agent/learnings.md"
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if [ ! -f "$LEARNINGS_FILE" ]; then
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log "ERROR: learnings.md not found at $LEARNINGS_FILE"
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exit 0
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fi
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log "Starting retrospective analysis in background..."
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# Run retrospective in background using the /retrospective slash command
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# Pass transcript path as argument so the command knows where to read the session
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# Use nohup to ensure the process survives after hook exits
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(
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cd "$PROJECT_DIR" && nohup claude --dangerously-skip-permissions \
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-p "/retrospective
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The session transcript is at: $TRANSCRIPT
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Read it to understand what happened in this session." \
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>> "$LOG_FILE" 2>&1 &
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) &
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log "Background process spawned"
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# Exit immediately - don't wait for background process
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exit 0
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