const winston = require('winston');
const AWS = require('aws-sdk');
const WinstonCloudWatch = require('winston-cloudwatch');
AWS.config.update({
    region: process.env.LOG_RIGION_NAME,
});
const consoleTransport = new winston.transports.Console({
    level: 'debug',
    silent: false
});
let logger = winston.createLogger({
        level: 'info',
        exitOnError: false,
        format: winston.format.combine(
            winston.format.label({ label: 'test' }),
            winston.format.timestamp({
                format: 'YYYY-MM-DD HH:mm:ss'
            }),
            winston.format.colorize(),
            winston.format.splat(),
            winston.format.metadata({ fillExcept: ['message', 'level', 'timestamp', 'label'] }),
            winston.format.printf((info) => {
                let out = ``;
                if (Object.keys(info.metadata).length > 0) {
                    Object.keys(info.metadata).forEach(function (key){
                        out += `[` + info.metadata[key] + `]`;
                    });
                    return `${info.timestamp}[${info.label}]` + out + `${info.level}:${info.message}`;
                } else {
                    return `${info.timestamp}[${info.label}]${info.level}:${info.message}`;
                }
            }),
        ),
        transports: [consoleTransport]
    });

const cloudwatchConfig = new WinstonCloudWatch({
    logGroupName: process.env.LOG_CLOUDWATCH_GROUP_NAME,//REQUIRED
    logStreamName: process.env.LOG_CLOUDWATCH_IMPORT_STREAM_NAME,//REQUIRED
    awsAccessKeyId: process.env.LOG_CLOUDWATCH_ACCESS_KEY,
    awsSecretKey: process.env.LOG_CLOUDWATCH_SECRET_ACCESS_KEY,
    awsRegion: process.env.LOG_CLOUDWATCH_REGION,
    messageFormatter:(item) =>{
        let meta = item.metadata;
        let message = item.message;
        let label = item.label;
        let level = 'info';
        if(item.level.includes('debug')){
            item = 'debug';
        }
        if(item.level.includes('warn')){
            level = 'warn';
        }
        if(item.level.includes('error')){
            level = 'error';
        }
        if(meta !=undefined && meta != null){
            let out = ``;
            Object.keys(meta).forEach(function (key){
                out += `[` + meta[key] + `]`;
            });
            return `[${label}]` + out + `${level}:${message}`;
        }else{
            return `[${label}]${level}:${message}`;
        }
    }
});
logger.add(cloudwatchConfig);
module.exports = logger;