import winston from 'winston';
import path from 'path';

const logDir = process.env.LOG_FILE_PATH || './logs';

// Create logger instance
const logger = winston.createLogger({
  level: process.env.LOG_LEVEL || 'info',
  format: winston.format.combine(
    winston.format.timestamp({
      format: 'YYYY-MM-DD HH:mm:ss',
    }),
    winston.format.errors({ stack: true }),
    winston.format.json()
  ),
  defaultMeta: { service: 're-workflow-backend' },
  transports: [
    // Write all logs with level 'error' and below to error.log
    new winston.transports.File({
      filename: path.join(logDir, 'error.log'),
      level: 'error',
      maxsize: 5242880, // 5MB
      maxFiles: 5,
    }),
    // Write all logs with level 'info' and below to combined.log
    new winston.transports.File({
      filename: path.join(logDir, 'combined.log'),
      maxsize: 5242880, // 5MB
      maxFiles: 5,
    }),
  ],
});

// If we're not in production, log to the console as well
if (process.env.NODE_ENV !== 'production') {
  logger.add(
    new winston.transports.Console({
      format: winston.format.combine(
        winston.format.colorize(),
        winston.format.simple()
      ),
    })
  );
}

// Create a stream object for Morgan HTTP logging
// Use type assertion to bypass TypeScript's strict checking for the stream property
const loggerWithStream = logger as any;
loggerWithStream.stream = {
  write: (message: string) => {
    logger.info(message.trim());
  },
};

export default loggerWithStream as winston.Logger;
