163 lines
3.6 KiB
TypeScript
163 lines
3.6 KiB
TypeScript
import fs from 'fs';
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import path from 'path';
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// 日誌級別
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export enum LogLevel {
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ERROR = 0,
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WARN = 1,
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INFO = 2,
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DEBUG = 3
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}
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// 日誌配置
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const LOG_LEVEL = (process.env.LOG_LEVEL as LogLevel) || LogLevel.INFO;
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const LOG_FILE = process.env.LOG_FILE || './logs/app.log';
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// 確保日誌目錄存在
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const logDir = path.dirname(LOG_FILE);
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if (!fs.existsSync(logDir)) {
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fs.mkdirSync(logDir, { recursive: true });
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}
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// 日誌顏色
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const colors = {
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reset: '\x1b[0m',
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red: '\x1b[31m',
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yellow: '\x1b[33m',
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green: '\x1b[32m',
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blue: '\x1b[34m',
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magenta: '\x1b[35m',
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cyan: '\x1b[36m'
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};
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// 日誌級別名稱
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const levelNames = {
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[LogLevel.ERROR]: 'ERROR',
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[LogLevel.WARN]: 'WARN',
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[LogLevel.INFO]: 'INFO',
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[LogLevel.DEBUG]: 'DEBUG'
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};
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// 日誌級別顏色
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const levelColors = {
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[LogLevel.ERROR]: colors.red,
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[LogLevel.WARN]: colors.yellow,
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[LogLevel.INFO]: colors.green,
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[LogLevel.DEBUG]: colors.blue
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};
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// 寫入檔案日誌
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function writeToFile(level: LogLevel, message: string, data?: any) {
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const timestamp = new Date().toISOString();
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const levelName = levelNames[level];
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const logEntry = {
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timestamp,
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level: levelName,
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message,
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data: data || null
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};
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const logLine = JSON.stringify(logEntry) + '\n';
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try {
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fs.appendFileSync(LOG_FILE, logLine);
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} catch (error) {
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console.error('Failed to write to log file:', error);
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}
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}
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// 控制台輸出
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function consoleOutput(level: LogLevel, message: string, data?: any) {
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const timestamp = new Date().toISOString();
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const levelName = levelNames[level];
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const color = levelColors[level];
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let output = `${color}[${levelName}]${colors.reset} ${timestamp} - ${message}`;
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if (data) {
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output += `\n${color}Data:${colors.reset} ${JSON.stringify(data, null, 2)}`;
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}
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console.log(output);
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}
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// 主日誌函數
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function log(level: LogLevel, message: string, data?: any) {
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if (level <= LOG_LEVEL) {
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consoleOutput(level, message, data);
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writeToFile(level, message, data);
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}
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}
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// 日誌類別
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export class Logger {
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private context: string;
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constructor(context: string = 'App') {
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this.context = context;
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}
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error(message: string, data?: any) {
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log(LogLevel.ERROR, `[${this.context}] ${message}`, data);
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}
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warn(message: string, data?: any) {
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log(LogLevel.WARN, `[${this.context}] ${message}`, data);
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}
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info(message: string, data?: any) {
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log(LogLevel.INFO, `[${this.context}] ${message}`, data);
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}
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debug(message: string, data?: any) {
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log(LogLevel.DEBUG, `[${this.context}] ${message}`, data);
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}
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// API 請求日誌
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logRequest(method: string, url: string, statusCode: number, duration: number, userId?: string) {
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this.info('API Request', {
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method,
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url,
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statusCode,
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duration: `${duration}ms`,
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userId
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});
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}
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// 認證日誌
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logAuth(action: string, email: string, success: boolean, ip?: string) {
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this.info('Authentication', {
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action,
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email,
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success,
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ip
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});
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}
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// 資料庫操作日誌
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logDatabase(operation: string, table: string, duration: number, success: boolean) {
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this.debug('Database Operation', {
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operation,
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table,
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duration: `${duration}ms`,
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success
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});
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}
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// 錯誤日誌
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logError(error: Error, context?: string) {
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this.error('Application Error', {
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message: error.message,
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stack: error.stack,
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context: context || this.context
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});
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}
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}
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// 預設日誌實例
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export const logger = new Logger();
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// 建立特定上下文的日誌實例
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export function createLogger(context: string): Logger {
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return new Logger(context);
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}
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