import pino from 'pino';
import pinoHttp from 'pino-http';

export const logger = pino({
  prettyPrint: process.env.NODE_ENV === 'development',
  level: process.env.LOG_LEVEL || 'info',

  serializers: {
    err: pino.stdSerializers.err,
    req: pino.stdSerializers.req,
  },
  // config for client-side logger
  browser: {
    transmit: {
      level: 'error',
      send: (_level, logEvent) => {
        if (typeof window !== 'undefined' && (window as any).track) {
          (window as any).track('error', {
            errorSource: 'client',
            errorCode: 'unknown',
            errorMessage: JSON.stringify(logEvent),
          });
        }
      },
    },
  },
});

export const getHttpLogger = (opts) => {
  const { customProps } = opts || {};

  return pinoHttp({
    logger,

    // Define a custom request id function
    // genReqId: function (req) { return req.id },

    // Define a custom logger level
    customLogLevel: function (res, err) {
      if (res.statusCode >= 400 && res.statusCode < 500) {
        return 'warn';
      } else if (res.statusCode >= 500 || err) {
        return 'error';
      }
      return 'debug';
    },

    autoLogging: true,

    // Define additional custom request properties
    customProps,
  });
};