Added better pratices

retrive.js

@@ -1,9 +1,8 @@
 import { create } from 'ipfs';
-import { writeFileSync } from 'fs';
+import { writeFile } from 'fs/promises';
 
 class IPFSFileManager {
-  constructor(cid) {
-    this.cid = cid;
+  constructor() {
     this.node = null;
   }
 
@@ -12,9 +11,10 @@ class IPFSFileManager {
     console.log('IPFS node is ready');
   }
 
-  async retrieveFileFromIPFS() {
+  async retrieveFileFromIPFS(cid, filepath) {
     try {
       await this.initIPFS();
+
       const chunks = [];
       for await (const chunk of this.node.cat(this.cid)) {
         chunks.push(chunk);
@@ -23,7 +23,7 @@ class IPFSFileManager {
 
       // Save the file data to a local file
       const filePath = `./retrievedFile.pdf`;
-      writeFileSync(filePath, fileData);
+      await this.saveFileToLocal(filePath, fileData);
 
       this.closeIPFS();
       console.log('File retrieved from IPFS and saved as:', filePath);
@@ -32,6 +32,15 @@ class IPFSFileManager {
     }
   }
 
+  async saveFileToLocal(filePath, fileData) {
+    try {
+      await writeFile(filePath, fileData);
+    } catch (error) {
+      console.error('Failed to save the file locally', error);
+      throw error;
+    }
+  }
+
   async closeIPFS() {
     if (this.node) {
       await this.node.stop();

send.js

@@ -1,5 +1,5 @@
 import { create } from 'ipfs';
-import { readFile as _readFile } from 'fs';
+import { readFile } from 'fs/promises';
 
 class IPFSFileManager {
   constructor(filePath) {
@@ -12,16 +12,13 @@ class IPFSFileManager {
     console.log('IPFS node is ready');
   }
 
-  readFile() {
-    return new Promise((resolve, reject) => {
-      _readFile(this.filePath, (error, data) => {
-        if (error) {
-          reject(error);
-        } else {
-          resolve(data);
-        }
-      });
-    });
+  async readFile() {
+    try {
+      const data = await readFile(this.filePath);
+      return data;
+    } catch (error) {
+      throw new Error(`Failed to read the file: ${error}`);
+    }
   }
 
   async addFileToIPFS() {
@@ -48,4 +45,3 @@ class IPFSFileManager {
 const filePath = './file.txt';
 const ipfsFileManager = new IPFSFileManager(filePath);
 ipfsFileManager.addFileToIPFS();
-//ipfsFileManager.closeIPFS();