function formatPayload(payload: unknown) {
  if (typeof payload === 'string') return { msg: payload };
  if (payload instanceof Error) return { msg: payload.message, stack: payload.stack };
  return payload;
}

const baseMeta = () => ({ pid: process.pid, ts: new Date().toISOString() });

export const logger = {
  info: (payload: unknown, meta: Record<string, unknown> = {}) => {
    try {
      console.log(JSON.stringify({ level: 'info', ...baseMeta(), meta, payload: formatPayload(payload) }));
    } catch (e) {
      console.log('INFO', payload, meta);
    }
  },
  warn: (payload: unknown, meta: Record<string, unknown> = {}) => {
    try {
      console.warn(JSON.stringify({ level: 'warn', ...baseMeta(), meta, payload: formatPayload(payload) }));
    } catch (e) {
      console.warn('WARN', payload, meta);
    }
  },
  error: (payload: unknown, meta: Record<string, unknown> = {}) => {
    try {
      console.error(JSON.stringify({ level: 'error', ...baseMeta(), meta, payload: formatPayload(payload) }));
    } catch (e) {
      console.error('ERROR', payload, meta);
    }
  },
};

export default logger;