Fix sharing extension only using first attachment

ShareExtension/Info.plist

@@ -7,7 +7,14 @@
 		<key>NSExtensionAttributes</key>
 		<dict>
 			<key>NSExtensionActivationRule</key>
-			<string>TRUEPREDICATE</string>
+			<dict>
+				<key>NSExtensionActivationSupportsImageWithMaxCount</key>
+				<integer>4</integer>
+				<key>NSExtensionActivationSupportsMovieWithMaxCount</key>
+				<integer>1</integer>
+				<key>NSExtensionActivationSupportsWebURLWithMaxCount</key>
+				<integer>1</integer>
+			</dict>
 		</dict>
 		<key>NSExtensionMainStoryboard</key>
 		<string>MainInterface</string>

ShareExtension/ShareViewController.swift

@@ -84,12 +84,23 @@ class ShareViewController: UIViewController {
             }
         } else if let text: NSString = await getObject(from: itemProvider) {
             return ("\n\n\(text)", [])
-        } else if let attachment: DraftAttachment = await getObject(from: itemProvider) {
-            return ("", [attachment])
         } else if let attributedContent = inputItem.attributedContentText {
             return ("\n\n\(attributedContent.string)", [])
         } else {
-            return ("", [])
+            let attachments = await withTaskGroup(of: DraftAttachment?.self, returning: [DraftAttachment].self) { group in
+                for provider in inputItem.attachments! {
+                    group.addTask { @MainActor in
+                        await self.getObject(from: provider)
+                    }
+                }
+                
+                return await group.reduce(into: [], { partialResult, result in
+                    if let result {
+                        partialResult.append(result)
+                    }
+                })
+            }
+            return ("", attachments)
         }
     }