#!/usr/bin/env bash
set -euo pipefail

# Optional: wait for Postgres to be reachable
if [[ -n "${DATABASE_HOST:-}" && -n "${DATABASE_PORT:-}" ]]; then
  echo "Waiting for Postgres at ${DATABASE_HOST}:${DATABASE_PORT}..."
  for i in {1..60}; do
    (echo > /dev/tcp/${DATABASE_HOST}/${DATABASE_PORT}) >/dev/null 2>&1 && break || true
    sleep 1
  done
fi

# Run DB migrations only if RUN_MIGRATIONS=true (blog service only)
if [[ "${RUN_MIGRATIONS:-}" == "true" ]]; then
  echo "Running Alembic migrations..."
  cd shared_lib && alembic upgrade head && cd /app
fi

# Clear Redis page cache on deploy
if [[ -n "${REDIS_URL:-}" && "${REDIS_URL}" != "no" ]]; then
  echo "Flushing Redis cache..."
  python3 -c "
import redis, os
r = redis.from_url(os.environ['REDIS_URL'])
r.flushall()
print('Redis cache cleared.')
" || echo "Redis flush failed (non-fatal), continuing..."
fi

# Start the app
echo "Starting Hypercorn (${APP_MODULE:-app:app})..."
PYTHONUNBUFFERED=1 exec hypercorn "${APP_MODULE:-app:app}" --bind 0.0.0.0:${PORT:-8000}