#!/usr/bin/env bash
# Restart Blockscout on VMID 5000 to resume indexing and reduce indexer lag.
# Run from project root. Requires SSH to r630-02 (192.168.11.12) or run on Proxmox host.
# Usage: bash scripts/fix-explorer-indexer-lag.sh

set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
PROJECT_ROOT="$(cd "$SCRIPT_DIR/../.." && pwd)"
source "${PROJECT_ROOT}/config/ip-addresses.conf" 2>/dev/null || true

VMID=5000
PROXMOX_R630_02="${PROXMOX_HOST_R630_02:-192.168.11.12}"
IP_BLOCKSCOUT="${IP_BLOCKSCOUT:-192.168.11.140}"

run_in_5000() {
  if command -v pct &>/dev/null; then
    pct exec $VMID -- bash -c "$1"
  else
    ssh -o ConnectTimeout=10 -o StrictHostKeyChecking=no root@"${PROXMOX_R630_02}" "pct exec $VMID -- bash -c '$1'"
  fi
}

echo "=== Fix Explorer Indexer Lag (restart Blockscout) ==="
echo "VMID: $VMID, host: ${PROXMOX_R630_02}"
echo ""

# 1. Restart Blockscout (systemctl or docker-compose)
echo "[1] Restarting Blockscout..."
if run_in_5000 "systemctl restart blockscout 2>/dev/null || true"; then
  echo "    systemctl restart blockscout sent"
else
  echo "    systemctl not available or failed, trying docker-compose..."
fi

# If systemctl exists but service uses docker-compose, restart docker stack
if run_in_5000 "cd /opt/blockscout 2>/dev/null && (docker-compose restart blockscout 2>/dev/null || docker compose restart blockscout 2>/dev/null)" 2>/dev/null; then
  echo "    docker-compose restart blockscout sent"
fi

echo "[2] Waiting 15s for indexer to resume..."
sleep 15

# 3. Quick lag check
echo "[3] Checking lag (RPC vs Blockscout)..."
RPC_BLOCK=$(curl -sf --max-time 10 -X POST -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}' \
  "http://${RPC_2201:-192.168.11.221}:8545" 2>/dev/null | sed -n 's/.*"result":"\(0x[0-9a-fA-F]*\)".*/\1/p')
EXPLORER_BLOCK=$(curl -sf --max-time 10 "http://${IP_BLOCKSCOUT}:4000/api/v2/stats" 2>/dev/null | sed -n 's/.*"total_blocks"\s*:\s*"\([0-9]*\)".*/\1/p')
[ -z "$EXPLORER_BLOCK" ] && EXPLORER_BLOCK=$(curl -sf --max-time 10 "http://${IP_BLOCKSCOUT}:4000/api/v2/stats" 2>/dev/null | sed -n 's/.*"total_blocks"\s*:\s*\([0-9]*\).*/\1/p')

if [ -n "$RPC_BLOCK" ] && [ -n "$EXPLORER_BLOCK" ]; then
  RPC_DEC=$((RPC_BLOCK))
  LAG=$((RPC_DEC - EXPLORER_BLOCK))
  echo "    RPC block: $RPC_DEC, Explorer block: $EXPLORER_BLOCK, lag: $LAG"
  if [ "$LAG" -le 500 ] 2>/dev/null; then
    echo "    OK (lag <= 500)"
  else
    echo "    Lag still > 500; indexer may need more time to catch up. Re-run daily check in a few minutes."
  fi
else
  echo "    Could not read blocks (RPC or Blockscout unreachable from this host)"
fi

echo ""
echo "=== Done ==="
echo "Re-run daily check: bash scripts/maintenance/daily-weekly-checks.sh daily"