#!/bin/bash
# Nightly reweave — connect orphan claims via vector similarity + Haiku classification.
# Creates a PR per run for Leo to review.
#
# Cron: 0 1 * * * /opt/teleo-eval/pipeline/ops/nightly-reweave.sh >> /opt/teleo-eval/logs/reweave.log 2>&1
#
# Pentagon-Agent: Epimetheus <0144398e-4ed3-4fe2-95a3-3d72e1abf887>

set -euo pipefail

PIPELINE_DIR="/opt/teleo-eval/pipeline"
EMBED_SCRIPT="/opt/teleo-eval/embed-claims.py"
REWEAVE_SCRIPT="${PIPELINE_DIR}/reweave.py"
LOG_DIR="/opt/teleo-eval/logs"
LOCK_FILE="/opt/teleo-eval/workspaces/.reweave-nightly.lock"

# Batch size per night — 200 orphans is ~$0.20 in Haiku calls
BATCH_SIZE=200

echo "=== Nightly reweave started at $(date -u +%Y-%m-%dT%H:%M:%SZ) ==="

# Prevent concurrent runs
if [ -f "$LOCK_FILE" ]; then
    LOCK_AGE=$(( $(date +%s) - $(stat -c %Y "$LOCK_FILE" 2>/dev/null || stat -f %m "$LOCK_FILE") ))
    if [ "$LOCK_AGE" -lt 3600 ]; then
        echo "Lock file exists and is ${LOCK_AGE}s old — another reweave is running. Exiting."
        exit 0
    fi
    echo "Stale lock (${LOCK_AGE}s old) — removing."
    rm -f "$LOCK_FILE"
fi
trap 'rm -f "$LOCK_FILE"' EXIT
touch "$LOCK_FILE"

# Step 1: Backfill missing embeddings
echo "--- Step 1: Embedding backfill ---"
if [ -f "$EMBED_SCRIPT" ]; then
    python3 "$EMBED_SCRIPT" 2>&1 | tail -5
    echo "Embedding backfill complete."
else
    echo "WARNING: embed-claims.py not found at ${EMBED_SCRIPT} — skipping backfill"
fi

# Step 2: Run reweave
echo "--- Step 2: Reweave (batch=${BATCH_SIZE}) ---"
python3 "$REWEAVE_SCRIPT" --max-orphans "$BATCH_SIZE" 2>&1

echo "=== Nightly reweave finished at $(date -u +%Y-%m-%dT%H:%M:%SZ) ==="