From 46530972250b93a46d30df740eaca9aacffb3808 Mon Sep 17 00:00:00 2001
From: Sabir Hassan <sabirbk06@gmail.com>
Date: Wed, 24 Jan 2024 15:30:22 +0500
Subject: [PATCH] chore: move utils to separate file

---
 client/src/app/xlmap/utils/file.utils.ts | 31 ++++++++++++++++++++++++
 client/src/app/xlmap/xlmap.component.ts  | 22 +++--------------
 2 files changed, 34 insertions(+), 19 deletions(-)
 create mode 100644 client/src/app/xlmap/utils/file.utils.ts

diff --git a/client/src/app/xlmap/utils/file.utils.ts b/client/src/app/xlmap/utils/file.utils.ts
new file mode 100644
index 0000000..a7daed7
--- /dev/null
+++ b/client/src/app/xlmap/utils/file.utils.ts
@@ -0,0 +1,31 @@
+export const blobToFile = (blob: Blob, fileName: string): File => {
+  const file = new File([blob], fileName, {
+    lastModified: new Date().getTime()
+  })
+  return file
+}
+
+/**
+ * Convert an array of bytes (Uint8Array) to a binary string.
+ * @param {Uint8Array} res - The array of bytes to convert.
+ * @returns {string} The binary string representation of the array of bytes.
+ */
+export const byteArrayToBinaryString = (res: Uint8Array): string => {
+  // Create a Uint8Array from the input array (if it's not already)
+  const bytes = new Uint8Array(res)
+
+  // Initialize an empty string to store the binary representation
+  let binary = ''
+
+  // Get the length of the byte array
+  const length = bytes.byteLength
+
+  // Iterate through each byte in the array
+  for (let i = 0; i < length; i++) {
+    // Convert each byte to its binary representation and append to the string
+    binary += String.fromCharCode(bytes[i])
+  }
+
+  // Return the binary string
+  return binary
+}
diff --git a/client/src/app/xlmap/xlmap.component.ts b/client/src/app/xlmap/xlmap.component.ts
index 6bd1281..3d490a4 100644
--- a/client/src/app/xlmap/xlmap.component.ts
+++ b/client/src/app/xlmap/xlmap.component.ts
@@ -21,6 +21,7 @@ import {
   SasStoreService
 } from '../services'
 import { getCellAddress, getFinishingCell } from './utils/xl.utils'
+import { blobToFile, byteArrayToBinaryString } from './utils/file.utils'
 
 interface XLMapRule {
   XLMAP_ID: string
@@ -141,13 +142,6 @@ export class XLMapComponent implements AfterContentInit, AfterViewInit, OnInit {
     private sasService: SasService
   ) {}
 
-  private blobToFile(theBlob: Blob, fileName: string): File {
-    const b: any = theBlob
-    b.lastModifiedDate = new Date()
-    b.name = fileName
-    return b as File
-  }
-
   public xlmapOnClick(xlmap: XLMapListItem) {
     if (xlmap.id !== this.selectedXLMap?.id) {
       this.selectedXLMap = xlmap
@@ -218,7 +212,7 @@ export class XLMapComponent implements AfterContentInit, AfterViewInit, OnInit {
       const reader = new FileReader()
       reader.onload = async (theFile: any) => {
         /* read workbook */
-        const bstr = this.toBstr(theFile.target.result)
+        const bstr = byteArrayToBinaryString(theFile.target.result)
         let wb: XLSX.WorkBook | undefined = undefined
 
         const xlsxOptions: XLSX.ParsingOptions = {
@@ -271,16 +265,6 @@ export class XLMapComponent implements AfterContentInit, AfterViewInit, OnInit {
     }
   }
 
-  public toBstr(res: any) {
-    const bytes = new Uint8Array(res)
-    let binary = ''
-    const length = bytes.byteLength
-    for (let i = 0; i < length; i++) {
-      binary += String.fromCharCode(bytes[i])
-    }
-    return binary
-  }
-
   public discardExtractedData() {
     this.isLoading = false
     this.isLoadingDesc = ''
@@ -330,7 +314,7 @@ export class XLMapComponent implements AfterContentInit, AfterViewInit, OnInit {
         .join('\n')
 
     const blob = new Blob([csvContent], { type: 'application/csv' })
-    const file: File = this.blobToFile(blob, this.filename + '.csv')
+    const file: File = blobToFile(blob, this.filename + '.csv')
 
     filesToUpload.push({
       file: file,