#!/bin/bash
# Session start hook - provides context to Claude
# Output is injected into the session as a system reminder

set -euo pipefail

CLAUDE_DIR="${HOME}/.claude"
STATE_DIR="${CLAUDE_DIR}/state"
PA_DIR="${STATE_DIR}/personal-assistant"

# Check for unsummarized sessions
UNSUMMARIZED=0
if [[ -f "${PA_DIR}/history/index.json" ]]; then
    UNSUMMARIZED=$(python3 -c "
import json
with open('${PA_DIR}/history/index.json') as f:
    data = json.load(f)
    unsummarized = [s for s in data.get('sessions', []) if not s.get('summarized', False)]
    print(len(unsummarized))
" 2>/dev/null || echo "0")
fi

# Check for pending memory items
PENDING_DECISIONS=0
if [[ -f "${PA_DIR}/memory/decisions.json" ]]; then
    PENDING_DECISIONS=$(python3 -c "
import json
with open('${PA_DIR}/memory/decisions.json') as f:
    data = json.load(f)
    pending = [d for d in data.get('items', []) if d.get('status') == 'pending']
    print(len(pending))
" 2>/dev/null || echo "0")
fi

# Output context as system reminder format
echo "SessionStart:Callback hook success: Success"

# Add additional context if there's something noteworthy
if [[ "${UNSUMMARIZED}" -gt 0 || "${PENDING_DECISIONS}" -gt 0 ]]; then
    echo "SessionStart hook additional context: "
    if [[ "${UNSUMMARIZED}" -gt 0 ]]; then
        echo "- ${UNSUMMARIZED} unsummarized session(s) available for review"
    fi
    if [[ "${PENDING_DECISIONS}" -gt 0 ]]; then
        echo "- ${PENDING_DECISIONS} pending decision(s) to review"
    fi
fi