BACKEND DONE FOR ALL APPS

2024-10-21 18:34:45 +03:00
parent 4157ca9e7d
commit ab1eaec413
349 changed files with 17199 additions and 14015 deletions
@@ -0,0 +1,65 @@
+export interface ParsedMessage {
+    operationCode: string;
+    metaInfo?: { [key: string]: any };
+    fileContent?: Buffer;
+}
+
+export class MessageHandler {
+    // Format the message with operationCode, guid, metaInfo, and fileContent (Base64 for fileContent)
+    static formatMessage(
+        operationCode: string,
+        metaInfo?: { [key: string]: any },
+        fileContent?: Buffer
+    ): string {
+        let message = `${operationCode}\n`;  // First part: operationCode and guid
+
+        if (metaInfo && Object.keys(metaInfo).length > 0) {
+            message += `${JSON.stringify(metaInfo)}\n`;  // Add metaInfo
+        }
+
+        if (fileContent && fileContent.length > 0) {
+            message += fileContent.toString('base64'); // Convert buffer to Base64 for fileContent
+        }
+
+        return message;
+    }
+
+    // Parse the incoming message (convert Base64 back to Buffer if fileContent is present)
+    static parseMessage(msg: string): ParsedMessage {
+        const parts = msg.split('\n');  // Split by \n (operationCode, metaInfo, and fileContent are on separate lines)
+
+        // First part should always be the operation code
+        const operationCode = parts[0]?.trim();
+        if (!operationCode) {
+            throw new Error('Missing operation code in the message');
+        }
+
+        let metaInfo: { [key: string]: any } | undefined = undefined;
+        let fileContent: Buffer | undefined = undefined;
+
+        // Parse the metaInfo (JSON object) if present
+        if (parts[1]) {
+            try {
+                metaInfo = JSON.parse(parts[1].trim());
+            } catch (err) {
+                console.error('Invalid metaInfo JSON format:', err);
+            }
+        }
+
+        // Convert Base64 string back to Buffer for fileContent if present
+        if (parts[2]) {
+            fileContent = Buffer.from(parts[2].trim(), 'base64');
+        }
+
+        return {
+            operationCode,
+            metaInfo,
+            fileContent,
+        };
+    }
+
+    // Validate if the parsed message contains an operation code
+    static validateMessage(parsedMessage: ParsedMessage | null): boolean {
+        return !!parsedMessage?.operationCode;
+    }
+}