thrilled-be-core/dist/logging/Logger.js

Core Express backend package with middleware, logging, security, and base application setup

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.defaultLogger = exports.Logger = void 0;
exports.createLogger = createLogger;
const tslib_1 = require("tslib");
const fs_1 = require("fs");
const path_1 = require("path");
const winston_1 = tslib_1.__importDefault(require("winston"));
const winston_daily_rotate_file_1 = tslib_1.__importDefault(require("winston-daily-rotate-file"));
class Logger {
    winston;
    config;
    constructor(config) {
        this.config = {
            level: 'info',
            dir: './logs',
            format: 'simple',
            httpLogging: true,
            maxFiles: 30,
            correlationId: true,
            ...config,
        };
        this.winston = this.createLogger();
    }
    static create(config) {
        return new Logger(config);
    }
    info(message, meta) {
        this.winston.info(message, this.addCorrelation(meta));
    }
    error(error, context) {
        if (error instanceof Error) {
            this.winston.error(error.message, this.addCorrelation({
                ...context,
                stack: error.stack,
                name: error.name,
            }));
        }
        else {
            this.winston.error(error, this.addCorrelation(context));
        }
    }
    warn(message, meta) {
        this.winston.warn(message, this.addCorrelation(meta));
    }
    debug(message, meta) {
        this.winston.debug(message, this.addCorrelation(meta));
    }
    createLogger() {
        // Ensure log directory exists
        const logDir = this.config.dir || './logs';
        if (!(0, fs_1.existsSync)(logDir)) {
            (0, fs_1.mkdirSync)(logDir, { recursive: true });
        }
        const format = this.config.format === 'json'
            ? winston_1.default.format.combine(winston_1.default.format.timestamp({
                format: 'YYYY-MM-DD HH:mm:ss',
            }), winston_1.default.format.errors({ stack: true }), winston_1.default.format.json())
            : winston_1.default.format.combine(winston_1.default.format.timestamp({ format: 'YYYY-MM-DD HH:mm:ss' }), winston_1.default.format.errors({ stack: true }), winston_1.default.format.printf(({ timestamp, level, message }) => {
                return `${timestamp} ${level}: ${message}`;
            }));
        // Console format for development (timestamp first, then colorized)
        const consoleFormat = winston_1.default.format.combine(winston_1.default.format.timestamp({ format: 'YYYY-MM-DD HH:mm:ss' }), winston_1.default.format.errors({ stack: true }), winston_1.default.format.printf(({ timestamp, level, message }) => {
            return `${timestamp} ${level}: ${message}`;
        }), winston_1.default.format.colorize({ all: true }));
        const transports = [
            // Console transport for development
            new winston_1.default.transports.Console({
                level: process.env.NODE_ENV === 'production' ? 'info' : 'debug',
                format: consoleFormat,
            }),
            // File transport for all logs
            new winston_daily_rotate_file_1.default({
                level: this.config.level,
                datePattern: 'YYYY-MM-DD',
                dirname: (0, path_1.join)(logDir, 'combined'),
                filename: '%DATE%.log',
                maxFiles: this.config.maxFiles,
                zippedArchive: true,
                format,
            }),
            // Error-only file transport
            new winston_daily_rotate_file_1.default({
                level: 'error',
                datePattern: 'YYYY-MM-DD',
                dirname: (0, path_1.join)(logDir, 'error'),
                filename: '%DATE%.log',
                maxFiles: this.config.maxFiles,
                zippedArchive: true,
                format,
            }),
        ];
        return winston_1.default.createLogger({
            level: this.config.level,
            format,
            transports,
            exitOnError: false,
        });
    }
    addCorrelation(meta) {
        if (!this.config.correlationId) {
            return meta || {};
        }
        // In a real implementation, you'd get this from async local storage
        // or from the request context
        return {
            ...meta,
            correlationId: this.generateCorrelationId(),
        };
    }
    generateCorrelationId() {
        return Math.random().toString(36).substring(2, 15);
    }
}
exports.Logger = Logger;
// Default logger instance for convenience
exports.defaultLogger = new Logger({
    level: 'info',
    dir: './logs',
    format: 'simple',
});
// Convenience function to create a logger with custom config
function createLogger(config) {
    return new Logger(config);
}