Начало работы над BookUpdateChecker

server/core/BookUpdateChecker/BUCServer.js

@@ -0,0 +1,24 @@
+let instance = null;
+
+//singleton
+class BUCServer {
+    constructor(config) {
+        if (!instance) {
+            this.config = Object.assign({}, config);
+            
+            this.config.tempDownloadDir = `${config.tempDir}/download`;
+            fs.ensureDirSync(this.config.tempDownloadDir);
+
+            this.down = new FileDownloader(config.maxUploadFileSize);
+            
+            instance = this;
+        }
+
+        return instance;
+    }    
+
+    async main() {
+    }
+}
+
+module.exports = BUCServer;