feat(#127): adding multiple file upload

- implement multi uploading files for ios
- update readme

README.md

@@ -212,8 +212,8 @@ The options object contains following keys:
 * `timeout`: timeout value for the request in seconds, defaults to global timeout value
 * `followRedirect`: enable or disable automatically following redirects
 * `headers`: headers object (key value pair), will be merged with global values
-* `filePath`: filePath to be used during upload and download see [uploadFile](#uploadFile) and [downloadFile](#downloadFile) for detailed information
-* `name`: name to be used during upload see [uploadFile](#uploadFile) for detailed information
+* `filePath`: file path(s) to be used during upload and download see [uploadFile](#uploadFile) and [downloadFile](#downloadFile) for detailed information
+* `name`: name(s) to be used during upload see [uploadFile](#uploadFile) for detailed information
 
 Here's a quick example:
 
@@ -337,13 +337,21 @@ Execute a DELETE request.  Takes a URL, parameters, and headers.  See the [post]
 Execute a HEAD request.  Takes a URL, parameters, and headers.  See the [post](#post) documentation for details on what is returned on success and failure.
 
 ### uploadFile<a name="uploadFile"></a>
-Uploads a file saved on the device.  Takes a URL, parameters, headers, filePath, and the name of the parameter to pass the file along as.  See the [post](#post) documentation for details on what is returned on success and failure.
+Uploads one or more file(s) saved on the device.  Takes a URL, parameters, headers, filePath(s), and the name(s) of the parameter to pass the file along as.  See the [post](#post) documentation for details on what is returned on success and failure.
 
 ```js
+// e.g. for single file
+const filePath = 'file:///somepicture.jpg';
+const name = 'picture';
+
+// e.g. for multiple files
+const filePath = ['file:///somepicture.jpg', 'file:///somedocument.doc'];
+const name = ['picture', 'document'];
+
 cordova.plugin.http.uploadFile("https://google.com/", {
     id: '12',
     message: 'test'
-}, { Authorization: 'OAuth2: token' }, 'file:///somepicture.jpg', 'picture', function(response) {
+}, { Authorization: 'OAuth2: token' }, filePath, name, function(response) {
     console.log(response.status);
 }, function(response) {
     console.error(response.error);

src/ios/CordovaHttpPlugin.h

@@ -10,7 +10,7 @@
 - (void)put:(CDVInvokedUrlCommand*)command;
 - (void)patch:(CDVInvokedUrlCommand*)command;
 - (void)delete:(CDVInvokedUrlCommand*)command;
-- (void)uploadFile:(CDVInvokedUrlCommand*)command;
+- (void)uploadFiles:(CDVInvokedUrlCommand*)command;
 - (void)downloadFile:(CDVInvokedUrlCommand*)command;
 
 @end

src/ios/CordovaHttpPlugin.m

@@ -420,20 +420,18 @@
     }
 }
 
-- (void)uploadFile:(CDVInvokedUrlCommand*)command {
+- (void)uploadFiles:(CDVInvokedUrlCommand*)command {
     AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
     manager.securityPolicy = securityPolicy;
 
     NSString *url = [command.arguments objectAtIndex:0];
     NSDictionary *headers = [command.arguments objectAtIndex:1];
-    NSString *filePath = [command.arguments objectAtIndex: 2];
-    NSString *name = [command.arguments objectAtIndex: 3];
+    NSArray *filePaths = [command.arguments objectAtIndex: 2];
+    NSArray *names = [command.arguments objectAtIndex: 3];
     NSTimeInterval timeoutInSeconds = [[command.arguments objectAtIndex:4] doubleValue];
     bool followRedirect = [[command.arguments objectAtIndex:5] boolValue];
     NSString *responseType = [command.arguments objectAtIndex:6];
 
-    NSURL *fileURL = [NSURL URLWithString: filePath];
-
     [self setRequestHeaders: headers forManager: manager];
     [self setTimeout:timeoutInSeconds forManager:manager];
     [self setRedirect:followRedirect forManager:manager];
@@ -445,7 +443,12 @@
     @try {
         [manager POST:url parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
             NSError *error;
-            [formData appendPartWithFileURL:fileURL name:name error:&error];
+            for (int i = 0; i < [filePaths count]; i++) {
+                NSString *filePath = (NSString *) [filePaths objectAtIndex:i];
+                NSString *uploadName = (NSString *) [names objectAtIndex:i];
+                NSURL *fileURL = [NSURL URLWithString: filePath];
+                [formData appendPartWithFileURL:fileURL name:uploadName error:&error];
+            }
             if (error) {
                 NSMutableDictionary *dictionary = [NSMutableDictionary dictionary];
                 [dictionary setObject:[NSNumber numberWithInt:500] forKey:@"status"];