following view

Signed-off-by: William Casarin <jb55@jb55.com>

damus/Views/FollowButtonView.swift

@@ -0,0 +1,44 @@
+//
+//  FollowButtonView.swift
+//  damus
+//
+//  Created by William Casarin on 2022-05-16.
+//
+
+import SwiftUI
+
+struct FollowButtonView: View {
+    let pubkey: String
+    @State var follow_state: FollowState
+    
+    var body: some View {
+        Button("\(follow_btn_txt(follow_state))") {
+            follow_state = perform_follow_btn_action(follow_state, target: pubkey)
+        }
+        .buttonStyle(.bordered)
+        .onReceive(handle_notify(.followed)) { notif in
+            let pk = notif.object as! String
+            if pk != pubkey {
+                return
+            }
+            
+            self.follow_state = .follows
+        }
+        .onReceive(handle_notify(.unfollowed)) { notif in
+            let pk = notif.object as! String
+            if pk != pubkey {
+                return
+            }
+            
+            self.follow_state = .unfollows
+        }
+    }
+}
+
+    /*
+struct FollowButtonView_Previews: PreviewProvider {
+    static var previews: some View {
+        FollowButtonView()
+    }
+}
+     */