User relays view

Changelog-Added: Added relay list to user profiles

damus/Models/ProfileModel.swift

@@ -11,6 +11,7 @@ class ProfileModel: ObservableObject, Equatable {
     @Published var events: [NostrEvent] = []
     @Published var contacts: NostrEvent? = nil
     @Published var following: Int = 0
+    @Published var relays: [String: RelayInfo]? = nil
     
     let pubkey: String
     let damus: DamusState
@@ -71,6 +72,7 @@ class ProfileModel: ObservableObject, Equatable {
     func handle_profile_contact_event(_ ev: NostrEvent) {
         self.contacts = ev
         self.following = count_pubkeys(ev.tags)
+        self.relays = decode_json_relays(ev.content)
         if damus.contacts.is_friend(ev.pubkey) {
             self.damus.contacts.add_friend_contact(ev)
         }

damus/Views/ProfileView.swift

@@ -240,6 +240,17 @@ struct ProfileView: View {
                             followers.subscribe()
                         }
                 }
+                
+                if let relays = profile.relays {
+                    NavigationLink(destination: UserRelaysView(state: damus_state, pubkey: profile.pubkey, relays: Array(relays.keys).sorted())) {
+                        Text("\(relays.keys.count)")
+                            .font(.subheadline.weight(.medium))
+                        Text("Relays")
+                            .font(.subheadline)
+                            .foregroundColor(.gray)
+                    }
+                    .buttonStyle(PlainButtonStyle())
+                }
             }
         }
     }

damus/Views/RecommendedRelayView.swift

@@ -10,12 +10,25 @@ import SwiftUI
 struct RecommendedRelayView: View {
     let damus: DamusState
     let relay: String
+    let add_button: Bool
+    
+    init(damus: DamusState, relay: String) {
+        self.damus = damus
+        self.relay = relay
+        self.add_button = true
+    }
+    
+    init(damus: DamusState, relay: String, add_button: Bool) {
+        self.damus = damus
+        self.relay = relay
+        self.add_button = add_button
+    }
     
     var body: some View {
         HStack {
             Text(relay)
             Spacer()
-            if let ev = damus.contacts.event {
+            if let ev = damus.contacts.event, add_button {
                 if let privkey = damus.keypair.privkey {
                     Button("Add") {
                         guard let ev = add_relay(ev: ev, privkey: privkey, current_relays: damus.pool.descriptors, relay: relay, info: .rw) else {

damus/Views/UserRelaysView.swift

@@ -0,0 +1,46 @@
+//
+//  UserRelaysView.swift
+//  damus
+//
+//  Created by William Casarin on 2022-12-29.
+//
+
+import SwiftUI
+
+struct UserRelaysView: View {
+    let state: DamusState
+    let pubkey: String
+    let relays: [String]
+    
+    @State var relay_state: [(String, Bool)]
+    
+    init (state: DamusState, pubkey: String, relays: [String]) {
+        self.state = state
+        self.pubkey = pubkey
+        self.relays = relays
+        let relay_state = UserRelaysView.make_relay_state(pool: state.pool, relays: relays)
+        self._relay_state = State(initialValue: relay_state)
+    }
+    
+    static func make_relay_state(pool: RelayPool, relays: [String]) -> [(String, Bool)] {
+        return relays.map({ r in
+            return (r, pool.get_relay(r) == nil)
+        }).sorted { (a, b) in a.0 < b.0 }
+    }
+    
+    var body: some View {
+        List(relay_state, id: \.0) { (r, add) in
+            RecommendedRelayView(damus: state, relay: r, add_button: add)
+        }
+        .onReceive(handle_notify(.relays_changed)) { _ in
+            self.relay_state = UserRelaysView.make_relay_state(pool: state.pool, relays: self.relays)
+        }
+        .navigationBarTitle("Relays")
+    }
+}
+
+struct UserRelaysView_Previews: PreviewProvider {
+    static var previews: some View {
+        UserRelaysView(state: test_damus_state(), pubkey: "", relays: [])
+    }
+}