User relays view

Changelog-Added: Added relay list to user profiles

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: [])
+    }
+}