chore: merging with sessions - sas request with file upload

src/utils/upload.ts

@@ -0,0 +1,86 @@
+import path from 'path'
+import fs from 'fs'
+import { getTmpSessionsFolderPath } from '.'
+
+/**
+ * It will create a object that maps hashed file names to the original names
+ * @param files array of files to be mapped
+ * @returns object
+ */
+export const makeFilesNamesMap = (files: any) => {
+	if (!files) return null
+
+	const filesNamesMap: any = {}
+
+	for (let file of files) {
+			filesNamesMap[file.filename] = file.fieldname
+	}
+
+	return filesNamesMap
+}
+
+/**
+ * Generates the sas code that reference uploaded files in the concurrent request
+ * @param filesNamesMap object that maps hashed file names and original file names
+ * @param sasUploadFolder name of the folder that is created for the purpose of files in concurrent request
+ * @returns generated sas code
+ */
+ export const generateFileUploadSasCode = (
+  filesNamesMap: any,
+  sasSessionFolder: string
+): string => {
+  const uploadFilesDirPath = sasSessionFolder
+
+  let uploadSasCode = ''
+  let fileCount = 0
+  let uploadedFilesMap: {
+    fileref: string
+    filepath: string
+    filename: string
+    count: number
+  }[] = []
+
+  fs.readdirSync(uploadFilesDirPath).forEach((fileName) => {
+    let fileCountString = fileCount < 100 ? '0' + fileCount : fileCount
+    fileCountString = fileCount < 10 ? '00' + fileCount : fileCount
+
+    if (fileName.includes('req_file')) {
+      fileCount++
+
+      uploadedFilesMap.push({
+        fileref: `_sjs${fileCountString}`,
+        filepath: `${uploadFilesDirPath}/${fileName}`,
+        filename: filesNamesMap[fileName],
+        count: fileCount
+      })
+    }
+  })
+
+  for (let uploadedMap of uploadedFilesMap) {
+    uploadSasCode += `\nfilename ${uploadedMap.fileref} "${uploadedMap.filepath}";`
+  }
+
+  uploadSasCode += `\n%let _WEBIN_FILE_COUNT=${fileCount};`
+
+  for (let uploadedMap of uploadedFilesMap) {
+    uploadSasCode += `\n%let _WEBIN_FILENAME${uploadedMap.count}=${uploadedMap.filepath};`
+  }
+
+  for (let uploadedMap of uploadedFilesMap) {
+    uploadSasCode += `\n%let _WEBIN_FILEREF${uploadedMap.count}=${uploadedMap.fileref};`
+  }
+
+  for (let uploadedMap of uploadedFilesMap) {
+    uploadSasCode += `\n%let _WEBIN_NAME${uploadedMap.count}=${uploadedMap.filename};`
+  }
+
+  if (fileCount > 0) {
+    uploadSasCode += `\n%let _WEBIN_NAME=&_WEBIN_NAME1;`
+    uploadSasCode += `\n%let _WEBIN_FILEREF=&_WEBIN_FILEREF1;`
+    uploadSasCode += `\n%let _WEBIN_FILENAME=&_WEBIN_FILENAME1;`
+  }
+
+  uploadSasCode += `\n`
+
+  return uploadSasCode
+}