const winston = require(`winston`);

function createLogger(opts = {}) {
    const {
        level = `info`,
        getCorrelationId,
        noCorrelationIdValue = `nocorrelation`,
    } = opts;

    return winston.createLogger({
        format: winston.format.combine(
            winston.format((info) => {
                info.correlationId = getCorrelationId() || noCorrelationIdValue;
                return info;
            })(),
            winston.format.timestamp(),
            winston.format.errors({stack: true}),
            winston.format.colorize(),
            winston.format.printf(({timestamp, correlationId, level, message}) => {
                return `${timestamp} (${correlationId}) - ${level}: ${message}`;
            })
        ),
        level,
        transports: [
            new winston.transports.Console({
                handleExceptions: true,
            }),
        ],
        exitOnError: false,
    })
}

module.exports = {createLogger};