Add capability to upload multiple files and array of string parameters in one request

android/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.8-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

android/src/main/java/com/vydia/RNUploader/UploaderModule.kt

@@ -126,7 +126,24 @@ class UploaderModule(val reactContext: ReactApplicationContext) : ReactContextBa
    */
   @ReactMethod
   fun startUpload(options: ReadableMap, promise: Promise) {
-    for (key in arrayOf("url", "path")) {
+    val mandatoryParamsList: MutableList<String> = mutableListOf("url")
+    if (options.hasKey("files")) {
+      if (options.getType("files") != ReadableType.Array) {
+        promise.reject(java.lang.IllegalArgumentException("files must be an array."))
+        return
+      }
+      val files = options.getArray("files")
+      for (i in 0 until files!!.size()) {
+        val file = files.getMap(i)
+        if (!file.hasKey("path")) {
+          promise.reject(java.lang.IllegalArgumentException("Missing path field in files"))
+          return
+        }
+      }
+    } else {
+      mandatoryParamsList.add("path")
+    }
+    for (key in mandatoryParamsList) {
       if (!options.hasKey(key)) {
         promise.reject(java.lang.IllegalArgumentException("Missing '$key' field."))
         return
@@ -146,7 +163,10 @@ class UploaderModule(val reactContext: ReactApplicationContext) : ReactContextBa
     }
     configureUploadServiceHTTPStack(options, promise)
     var requestType: String? = "raw"
-    if (options.hasKey("type")) {
+    val files = options.getArray("files")
+    if (files != null) {
+      requestType = "multipart";
+    } else if (options.hasKey("type")) {
       requestType = options.getString("type")
       if (requestType == null) {
         promise.reject(java.lang.IllegalArgumentException("type must be string."))
@@ -186,7 +206,14 @@ class UploaderModule(val reactContext: ReactApplicationContext) : ReactContextBa
     val maxRetries = if (options.hasKey("maxRetries") && options.getType("maxRetries") == ReadableType.Number) options.getInt("maxRetries") else 2
     val customUploadId = if (options.hasKey("customUploadId") && options.getType("method") == ReadableType.String) options.getString("customUploadId") else null
     try {
-      val request = if (requestType == "raw") {
+      val request = if (files != null) {
+        var request = MultipartUploadRequest(this.reactApplicationContext, url!!)
+        for (i in 0 until files.size()) {
+          val file = files.getMap(i)
+          request = request.addFileToUpload(file.getString("path")!!, file.getString("field") ?: "file${i}")
+        }
+        request
+      } else if (requestType == "raw") {
         BinaryUploadRequest(this.reactApplicationContext, url!!)
                 .setFileToUpload(filePath!!)
       } else {
@@ -238,11 +265,23 @@ class UploaderModule(val reactContext: ReactApplicationContext) : ReactContextBa
         val keys = parameters!!.keySetIterator()
         while (keys.hasNextKey()) {
           val key = keys.nextKey()
-          if (parameters.getType(key) != ReadableType.String) {
-            promise.reject(java.lang.IllegalArgumentException("Parameters must be string key/values. Value was invalid for '$key'"))
+          if (parameters.getType(key) != ReadableType.String && parameters.getType(key) != ReadableType.Array) {
+            promise.reject(java.lang.IllegalArgumentException("Parameters must be string key/values or array key/List<String>. Value was invalid for '$key'"))
             return
           }
-          request.addParameter(key, parameters.getString(key)!!)
+          if(parameters.getType(key) == ReadableType.String){
+            request.addParameter(key, parameters.getString(key)!!)
+          }else{
+            val valuesParams = parameters.getArray(key)!!
+            val convertedValue = mutableListOf<String>()
+            for(i in 0 until valuesParams.size()){
+              val str = valuesParams.getString(i)
+              println("Log: $str")
+              convertedValue.add(str)
+            }
+            request.addArrayParameter(key, convertedValue)
+          }
+
         }
       }
       if (options.hasKey("headers")) {

index.d.ts

@@ -81,6 +81,15 @@ declare module "react-native-background-upload" {
     export interface UploadOptions {
         url: string;
         path: string;
+        /**
+        * Android only, to upload multiple files in one request via multipart
+        * `path` & `field` will be ignored and `type` will be multipart if `files` is available
+        */
+        files?: {
+            path: string;
+            // Fallback to file0, file1, file2 etc
+            field?: string;
+        };
         type?: 'raw' | 'multipart';
         method?: 'POST' | 'GET' | 'PUT' | 'PATCH' | 'DELETE';
         customUploadId?: string;