init

backend-node/src/logger.js

@@ -0,0 +1,46 @@
+const fs = require('fs');
+const path = require('path');
+
+// 简单 logger，和 Go 端行为接近；若设置 LOG_FILE 则同时追加到该文件（便于打包 exe 双击时查日志）
+function log(level, msg, ...args) {
+  const time = new Date().toISOString();
+  let rest = '';
+  if (args.length && typeof args[0] === 'object' && args[0] !== null && !Array.isArray(args[0])) {
+    rest = ' ' + JSON.stringify(args[0]);
+  } else if (args.length) {
+    rest = ' ' + args.map((a) => (typeof a === 'object' ? JSON.stringify(a) : String(a))).join(' ');
+  }
+  const line = `${time} [${level}] ${msg}${rest}\n`;
+  try {
+    console.log(line.trimEnd());
+  } catch (_) {}
+  const logFile = process.env.LOG_FILE;
+  if (logFile) {
+    try {
+      const dir = path.dirname(logFile);
+      if (!fs.existsSync(dir)) fs.mkdirSync(dir, { recursive: true });
+      fs.appendFileSync(logFile, line);
+    } catch (_) {}
+  }
+}
+
+module.exports = {
+  info(msg, ...args) {
+    log('INFO', msg, ...args);
+  },
+  infow(msg, ...args) {
+    log('INFO', msg, ...args);
+  },
+  warn(msg, ...args) {
+    log('WARN', msg, ...args);
+  },
+  warnw(msg, ...args) {
+    log('WARN', msg, ...args);
+  },
+  error(msg, ...args) {
+    log('ERROR', msg, ...args);
+  },
+  errorw(msg, ...args) {
+    log('ERROR', msg, ...args);
+  },
+};