fix: uploadFile accept multiple files

src/FileUploader.ts

@@ -1,5 +1,6 @@
 import { isLogInRequired, needsRetry } from "./utils";
 import { CsrfToken } from "./types/CsrfToken";
+import { UploadFile } from "./types/UploadFile";
 
 const requestRetryLimit = 5;
 
@@ -12,9 +13,8 @@ export class FileUploader {
   ) {}
   private retryCount = 0;
 
-  public uploadFile(sasJob: string, file: File, fileName: string, params: any) {
-    if (!file) throw new Error("File must be provided");
-    if (!fileName) throw new Error("File name must be provided");
+  public uploadFile(sasJob: string, files: UploadFile[], params: any) {
+    if (files?.length < 1) throw new Error("Atleast one file must be provided");
 
     let paramsString = "";
 
@@ -38,8 +38,10 @@ export class FileUploader {
     return new Promise((resolve, reject) => {
       const formData = new FormData();
 
-      formData.append("file", file);
-      formData.append("filename", fileName);
+      for (let file of files) {
+        formData.append("file", file.file, file.fileName);
+      }
+
       if (this.csrfToken) formData.append("_csrf", this.csrfToken.value);
 
       fetch(uploadUrl, {
@@ -72,7 +74,7 @@ export class FileUploader {
           if (needsRetry(responseText)) {
             if (this.retryCount < requestRetryLimit) {
               this.retryCount++;
-              this.uploadFile(sasJob, file, fileName, params).then(
+              this.uploadFile(sasJob, files, params).then(
                 (res: any) => resolve(res),
                 (err: any) => reject(err)
               );

src/SASjs.ts

@@ -21,6 +21,7 @@ import {
   SASjsWaitingRequest,
   ServerType,
   CsrfToken,
+  UploadFile
 } from "./types";
 import { SASViyaApiClient } from "./SASViyaApiClient";
 import { SAS9ApiClient } from "./SAS9ApiClient";
@@ -379,11 +380,10 @@ export default class SASjs {
    * @param sasJob - The path to the SAS program (ultimately resolves to
    *  the SAS `_program` parameter to run a Job Definition or SAS 9 Stored
    *  Process.)  Is prepended at runtime with the value of `appLoc`.
-   * @param file - File to be uploaded
-   * @param fileName - Name of the file to be uploaded
+   * @param file - Array of files to be uploaded, including File object and file name.
    * @param params - Request URL paramaters
    */
-  public uploadFile(sasJob: string, file: File, fileName: string, params: any) {
+  public uploadFile(sasJob: string, files: UploadFile[], fileName: string, params: any) {
     const fileUploader =
       this.fileUploader ||
       new FileUploader(
@@ -392,7 +392,7 @@ export default class SASjs {
         this.jobsPath,
         this.csrfTokenWeb
       );
-    return fileUploader.uploadFile(sasJob, file, fileName, params);
+    return fileUploader.uploadFile(sasJob, files, params);
   }
 
   /**

src/types/UploadFile.ts

@@ -0,0 +1,9 @@
+/**
+ * Represents a object that is passed to file uploader
+ *
+ */
+export interface UploadFile {
+    file: File;
+    fileName: string;
+}
+  

src/types/index.ts

@@ -8,3 +8,4 @@ export * from "./SASjsRequest";
 export * from "./SASjsWaitingRequest";
 export * from "./ServerType";
 export * from "./Session";
+export * from "./UploadFile";