Universal Links: share notes!

Changelog-Added: Added universal link sharing of notes

damus/Nostr/NostrLink.swift

@@ -80,7 +80,32 @@ func parse_nostr_ref_uri(_ p: Parser) -> ReferencedId? {
     return ReferencedId(ref_id: pk, relay_id: nil, key: typ)
 }
 
+func decode_universal_link(_ s: String) -> NostrLink? {
+    var uri = s.replacingOccurrences(of: "https://damus.io/r/", with: "")
+    uri = uri.replacingOccurrences(of: "https://damus.io/", with: "")
+    uri = uri.replacingOccurrences(of: "/", with: "")
+    
+    guard let decoded = try? bech32_decode(uri) else {
+        return nil
+    }
+    
+    let h = hex_encode(decoded.data)
+    
+    if decoded.hrp == "note" {
+        return .ref(ReferencedId(ref_id: h, relay_id: nil, key: "e"))
+    } else if decoded.hrp == "npub" {
+        return .ref(ReferencedId(ref_id: h, relay_id: nil, key: "p"))
+    }
+    // TODO: handle nprofile, etc
+    
+    return nil
+}
+
 func decode_nostr_uri(_ s: String) -> NostrLink? {
+    if s.starts(with: "https://damus.io/") {
+        return decode_universal_link(s)
+    }
+
     var uri = s.replacingOccurrences(of: "nostr://", with: "")
     uri = uri.replacingOccurrences(of: "nostr:", with: "")
     

damus/Views/EventActionBar.swift

@@ -24,6 +24,7 @@ struct EventActionBar: View {
     let generator = UIImpactFeedbackGenerator(style: .medium)
     @State var sheet: ActionBarSheet? = nil
     @State var confirm_boost: Bool = false
+    @State var show_share_sheet: Bool = false
     @StateObject var bar: ActionBarModel
     
     var body: some View {
@@ -40,6 +41,7 @@ struct EventActionBar: View {
                 EventActionButton(img: "bubble.left", col: nil) {
                     notify(.reply, event)
                 }
+                .frame(minWidth: 0, maxWidth: .infinity, alignment: .leading)
             }
             
             HStack(alignment: .bottom) {
@@ -55,6 +57,7 @@ struct EventActionBar: View {
                     }
                 }
             }
+            .frame(minWidth: 0, maxWidth: .infinity, alignment: .leading)
 
             HStack(alignment: .bottom) {
                 Text("\(bar.likes > 0 ? "\(bar.likes)" : "")")
@@ -69,6 +72,12 @@ struct EventActionBar: View {
                     }
                 }
             }
+            .frame(minWidth: 0, maxWidth: .infinity, alignment: .leading)
+
+            EventActionButton(img: "square.and.arrow.up", col: Color.gray) {
+                show_share_sheet = true
+            }
+            .frame(minWidth: 0, maxWidth: .infinity, alignment: .leading)
             
             /*
             HStack(alignment: .bottom) {
@@ -86,6 +95,13 @@ struct EventActionBar: View {
             }
              */
         }
+        .sheet(isPresented: $show_share_sheet) {
+            if let note_id = bech32_note_id(event.id) {
+                if let url = URL(string: "https://damus.io/" + note_id) {
+                    ShareSheet(activityItems: [url])
+                }
+            }
+        }
         .alert("Boost", isPresented: $confirm_boost) {
             Button("Cancel") {
                 confirm_boost = false
@@ -142,7 +158,6 @@ func EventActionButton(img: String, col: Color?, action: @escaping () -> ()) ->
             .font(.footnote.weight(.medium))
             .foregroundColor(col == nil ? Color.gray : col!)
     }
-    .padding(.trailing, 40)
 }
 
 struct LikeButton: View {

damus/damus.entitlements

@@ -4,6 +4,10 @@
 <dict>
 	<key>aps-environment</key>
 	<string>development</string>
+	<key>com.apple.developer.associated-domains</key>
+	<array>
+		<string>applinks:damus.io</string>
+	</array>
 	<key>keychain-access-groups</key>
 	<array>
 		<string>$(AppIdentifierPrefix)com.jb55.damus2</string>