Attachments support!

kordophone/Bridge/Operations/MBIMFetchAttachmentOperation.m

@@ -0,0 +1,71 @@
+//
+//  MBIMFetchAttachmentOperation.m
+//  kordophoned
+//
+//  Created by James Magahern on 11/20/18.
+//  Copyright © 2018 James Magahern. All rights reserved.
+//
+
+#import "MBIMFetchAttachmentOperation.h"
+#import "MBIMDataResponse.h"
+
+#import <IMCore/IMCore.h>
+
+@implementation MBIMFetchAttachmentOperation
+
++ (void)load { [super load]; }
+
++ (NSString *)endpointName
+{
+    return @"attachment";
+}
+
+- (void)main
+{
+    NSObject<HTTPResponse> *response = nil;
+    do {
+        NSURLComponents *urlComponents = [NSURLComponents componentsWithURL:self.requestURL resolvingAgainstBaseURL:NO];
+        
+        NSString *guid = nil;
+        for (NSURLQueryItem *queryItem in [urlComponents queryItems]) {
+            if ([[queryItem name] isEqualToString:@"guid"]) {
+                guid = [queryItem value];
+                break;
+            }
+        }
+        
+        if (!guid) {
+            NSLog(@"No query item provided");
+            response = [[HTTPErrorResponse alloc] initWithErrorCode:500];
+            break;
+        }
+        
+        IMFileTransfer *transfer = [[IMFileTransferCenter sharedInstance] transferForGUID:guid];
+        if (!transfer) {
+            NSLog(@"No transfer found for guid: %@", guid);
+            response = [[HTTPErrorResponse alloc] initWithErrorCode:404];
+            break;
+        }
+        
+        if (![transfer existsAtLocalPath]) {
+            NSLog(@"We don't have the file for this yet (still downloading to server?)");
+            response = [[HTTPErrorResponse alloc] initWithErrorCode:404];
+            break;
+        }
+        
+        NSString *localPath = [transfer localPath];
+        NSData *responseData = [NSData dataWithContentsOfFile:localPath];
+        if (!responseData) {
+            NSLog(@"Wasn't able to load data from local path: %@", localPath);
+            response = [[HTTPErrorResponse alloc] initWithErrorCode:404];
+            break;
+        }
+        
+        NSString *mimeType = [transfer mimeType];
+        response = [[MBIMDataResponse alloc] initWithData:responseData contentType:mimeType];
+    } while (0);
+    
+    self.serverCompletionBlock(response);
+}
+
+@end