#!/bin/sh
# Pre-startup cleanup: ensure database files are in a clean state
# This runs BEFORE the Node.js server starts.

set -e

DB_DIR="/data"
DB_FILE="${DB_DIR}/realblocks.db"

echo "[startup] Checking database state at ${DB_FILE}..."

# Ensure data dir exists
mkdir -p "${DB_DIR}"

# If the DB file exists but isn't a valid SQLite file, remove it.
if [ -f "${DB_FILE}" ]; then
  # Check SQLite magic header: "SQLite format 3\x00"
  HEADER=$(head -c 16 "${DB_FILE}" 2>/dev/null | head -c 15)
  if [ "${HEADER}" != "SQLite format 3" ]; then
    echo "[startup] Database file is corrupted (header: '${HEADER}'). Removing."
    rm -f "${DB_FILE}" "${DB_FILE}-wal" "${DB_FILE}-shm" "${DB_FILE}-journal"
  else
    echo "[startup] Database file looks valid."
  fi
else
  echo "[startup] No existing database file. Will create fresh."
fi

# Also remove any orphaned WAL/SHM/journal files left over
rm -f "${DB_FILE}-wal" "${DB_FILE}-shm" "${DB_FILE}-journal" 2>/dev/null || true

echo "[startup] Starting server..."
exec node server/dist/index.js