show who we're replying to

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

damus/Views/ReplyView.swift

@@ -7,12 +7,33 @@
 
 import SwiftUI
 
+func all_referenced_pubkeys(_ ev: NostrEvent) -> [ReferencedId] {
+    var keys = ev.referenced_pubkeys
+    let ref = ReferencedId(ref_id: ev.pubkey, relay_id: nil, key: "p")
+    keys.insert(ref, at: 0)
+    return keys
+}
+
 struct ReplyView: View {
     let replying_to: NostrEvent
     
+    @EnvironmentObject var profiles: Profiles
+    
     var body: some View {
         VStack {
             Text("Replying to:")
+            HStack {
+                let names = all_referenced_pubkeys(replying_to)
+                    .map { pubkey in
+                        let pk = pubkey.ref_id
+                        let prof = profiles.lookup(id: pk)
+                        return Profile.displayName(profile: prof, pubkey: pk)
+                    }
+                    .joined(separator: ", ")
+                Text(names)
+                    .foregroundColor(.gray)
+                    .font(.footnote)
+            }
             EventView(event: replying_to, highlight: .none, has_action_bar: false)
             PostView(references: replying_to.reply_ids(pubkey: replying_to.pubkey))