Notification Filters

Changelog-Added: Add filters to notification view

damus/ContentView.swift

@@ -187,10 +187,8 @@ struct ContentView: View {
                 PostingTimelineView
                 
             case .notifications:
-                VStack(spacing: 0) {
-                    Divider()
-                    NotificationsView(state: damus, notifications: home.notifications)
-                }
+                NotificationsView(state: damus, notifications: home.notifications)
+                
             case .dms:
                 DirectMessagesView(damus_state: damus_state!)
                     .environmentObject(home.dms)

damus/Models/NotificationsModel.swift

@@ -14,6 +14,28 @@ enum NotificationItem {
     case event_zap(String, ZapGroup)
     case reply(NostrEvent)
     
+    var is_reply: NostrEvent? {
+        if case .reply(let ev) = self {
+            return ev
+        }
+        return nil
+    }
+    
+    var is_zap: ZapGroup? {
+        switch self {
+        case .profile_zap(let zapgrp):
+            return zapgrp
+        case .event_zap(_, let zapgrp):
+            return zapgrp
+        case .reaction:
+            return nil
+        case .reply:
+            return nil
+        case .repost:
+            return nil
+        }
+    }
+    
     var id: String {
         switch self {
         case .repost(let evid, _):

damus/Views/Notifications/NotificationsView.swift

@@ -7,18 +7,72 @@
 
 import SwiftUI
 
+enum NotificationFilterState {
+    case all
+    case zaps
+    case replies
+    
+    func filter(_ item: NotificationItem) -> Bool {
+        switch self {
+        case .all:
+            return true
+        case .replies:
+            return item.is_reply != nil
+        case .zaps:
+            return item.is_zap != nil
+        }
+    }
+}
+
 struct NotificationsView: View {
     let state: DamusState
     @ObservedObject var notifications: NotificationsModel
+    @State var filter_state: NotificationFilterState = .all
+    
+    @Environment(\.colorScheme) var colorScheme
     
     var body: some View {
+        TabView(selection: $filter_state) {
+            NotificationTab(NotificationFilterState.all)
+                .tag(NotificationFilterState.all)
+                .id(NotificationFilterState.all)
+            
+            NotificationTab(NotificationFilterState.zaps)
+                .tag(NotificationFilterState.zaps)
+                .id(NotificationFilterState.zaps)
+            
+            NotificationTab(NotificationFilterState.replies)
+                .tag(NotificationFilterState.replies)
+                .id(NotificationFilterState.replies)
+        }
+        .safeAreaInset(edge: .top, spacing: 0) {
+            VStack(spacing: 0) {
+                CustomPicker(selection: $filter_state, content: {
+                    Text("All", comment: "Label for filter for all notifications.")
+                        .tag(NotificationFilterState.all)
+                    
+                    Text("Zaps", comment: "Label for filter for zap notifications.")
+                        .tag(NotificationFilterState.zaps)
+                    
+                    Text("Mentions", comment: "Label for filter for seeing mention notifications (replies, etc).")
+                        .tag(NotificationFilterState.replies)
+                    
+                })
+                Divider()
+                    .frame(height: 1)
+            }
+            .background(colorScheme == .dark ? Color.black : Color.white)
+        }
+    }
+    
+    func NotificationTab(_ filter: NotificationFilterState) -> some View {
         ScrollViewReader { scroller in
             ScrollView {
                 LazyVStack(alignment: .leading) {
                     Color.white.opacity(0)
                         .id("startblock")
                         .frame(height: 5)
-                    ForEach(notifications.notifications, id: \.id) { item in
+                    ForEach(notifications.notifications.filter(filter.filter), id: \.id) { item in
                         NotificationItemView(state: state, item: item)
                     }
                 }
@@ -45,6 +99,6 @@ struct NotificationsView: View {
 
 struct NotificationsView_Previews: PreviewProvider {
     static var previews: some View {
-        NotificationsView(state: test_damus_state(), notifications: NotificationsModel())
+        NotificationsView(state: test_damus_state(), notifications: NotificationsModel(), filter_state: .all )
     }
 }