Add view and download attachment buttons

ios/circolapp/circolapp/View/AttachmentView.swift

@@ -26,10 +26,52 @@ struct AttachmentView: View {
     
     var body: some View {
         Divider()
-        Text(attachmentName)
+        HStack {
-            .font(.subheadline)
+            Text(attachmentName)
-            .multilineTextAlignment(.leading)
+                .font(.subheadline)
-        
+                .multilineTextAlignment(.leading)
+            Spacer()
+            
+            Button(action: {
+                guard let url = URL(string: attachmentUrl) else { return }
+                openURL(url)
+            }) {
+                Image(systemName: "envelope.open")
+                    .foregroundColor(.blue)
+                    .font(.body)
+                    .padding()
+            }
+            .buttonStyle(PlainButtonStyle())
+            
+            Button(action: {
+                guard let url = URL(string: attachmentUrl) else { return }
+                
+                let downloadTask = URLSession.shared.downloadTask(with: url) {
+                    urlOrNil, responseOrNil, errorOrNil in
+                    
+                    guard let fileURL = urlOrNil else { return }
+                    do {
+                        let documentsURL = try
+                            FileManager.default.url(for: .documentDirectory,
+                                                    in: .userDomainMask,
+                                                    appropriateFor: nil,
+                                                    create: false)
+                        let savedURL = documentsURL.appendingPathComponent(fileURL.lastPathComponent)
+                        try FileManager.default.moveItem(at: fileURL, to: savedURL)
+                    } catch {
+                        print ("file error: \(error)")
+                    }
+                }
+                
+                downloadTask.resume()
+            }) {
+                Image(systemName: "square.and.arrow.down")
+                    .foregroundColor(.blue)
+                    .font(.body)
+                    .padding()
+            }
+            .buttonStyle(PlainButtonStyle())
+        }
     }
 }
 

ios/circolapp/circolapp/View/CircularView.swift

@@ -60,6 +60,26 @@ struct CircularView: View {
                     .buttonStyle(PlainButtonStyle())
                     
                     Button(action: {
+                        guard let url = URL(string: circular.url) else { return }
+                        
+                        let downloadTask = URLSession.shared.downloadTask(with: url) {
+                            urlOrNil, responseOrNil, errorOrNil in
+                            
+                            guard let fileURL = urlOrNil else { return }
+                            do {
+                                let documentsURL = try
+                                    FileManager.default.url(for: .documentDirectory,
+                                                            in: .userDomainMask,
+                                                            appropriateFor: nil,
+                                                            create: false)
+                                let savedURL = documentsURL.appendingPathComponent(fileURL.lastPathComponent)
+                                try FileManager.default.moveItem(at: fileURL, to: savedURL)
+                            } catch {
+                                print ("file error: \(error)")
+                            }
+                        }
+                        
+                        downloadTask.resume()
                     }) {
                         Image(systemName: "square.and.arrow.down")
                             .foregroundColor(.blue)