Fix saving expired filters not reenabling them

Closes #289

Tusker/Models/EditedFilter.swift

@@ -10,6 +10,8 @@ import Foundation
 import Pachyderm
 
 class EditedFilter: ObservableObject {
+    static let defaultExpiresInForExpired: TimeInterval = 24 * 60 * 60
+    
     let id: String?
     @Published var title: String?
     @Published var contexts: [FilterV1.Context]
@@ -31,7 +33,11 @@ class EditedFilter: ObservableObject {
         self.title = mo.title
         self.contexts = mo.contexts
         if let expiresAt = mo.expiresAt {
-            expiresIn = expiresAt.timeIntervalSinceNow
+            if expiresAt <= Date() {
+                expiresIn = EditedFilter.defaultExpiresInForExpired
+            } else {
+                expiresIn = expiresAt.timeIntervalSinceNow
+            }
         }
         self.keywords = mo.keywordMOs.map {
             Keyword(id: $0.id, keyword: $0.keyword, wholeWord: $0.wholeWord)

Tusker/Screens/Filters/EditFilterView.swift

@@ -27,18 +27,21 @@ struct EditFilterView: View {
         return durations.map { .init(value: $0, title: f.string(from: $0)!) }
     }()
     
-    @ObservedObject var filter: EditedFilter
+    @ObservedObject private var filter: EditedFilter
-    let create: Bool
+    private let create: Bool
+    private let originallyExpired: Bool
     @EnvironmentObject private var mastodonController: MastodonController
     @Environment(\.dismiss) private var dismiss
+    @State private var expiresIn: TimeInterval
     @State private var originalFilter: EditedFilter
     @State private var edited = false
     @State private var isSaving = false
     @State private var saveError: (any Error)?
     
-    init(filter: EditedFilter, create: Bool) {
+    init(filter: EditedFilter, create: Bool, originallyExpired: Bool) {
         self.filter = filter
         self.create = create
+        self.originallyExpired = originallyExpired
         self._originalFilter = State(wrappedValue: EditedFilter(copying: filter))
         if let expiresIn = filter.expiresIn {
             self._expiresIn = State(wrappedValue: Self.expiresInOptions.min(by: { a, b in
@@ -47,17 +50,10 @@ struct EditFilterView: View {
                 return aDist < bDist
             })!.value)
         } else {
-            self._expiresIn = State(wrappedValue: 24 * 60 * 60)
+            self._expiresIn = State(wrappedValue: EditedFilter.defaultExpiresInForExpired)
         }
     }
     
-    @State private var expiresIn: TimeInterval {
-        didSet {
-            if expires.wrappedValue {
-                filter.expiresIn = expiresIn
-            }
-        }
-    }
     private var expires: Binding<Bool> {
         Binding {
             filter.expiresIn != nil
@@ -158,7 +154,7 @@ struct EditFilterView: View {
                     Button(create ? "Create" : "Save") {
                         saveFilter()
                     }
-                    .disabled(!filter.isValid(for: mastodonController) || !edited)
+                    .disabled(!filter.isValid(for: mastodonController) || (!edited && originallyExpired))
                 }
             }
         }
@@ -167,6 +163,12 @@ struct EditFilterView: View {
         }, message: { error in
             Text(error.localizedDescription)
         })
+        .onChange(of: expiresIn, perform: { newValue in
+            edited = true
+            if expires.wrappedValue {
+                filter.expiresIn = newValue
+            }
+        })
         .onReceive(filter.objectWillChange, perform: { _ in
             edited = true
         })

Tusker/Screens/Filters/FiltersView.swift

@@ -51,7 +51,7 @@ struct FiltersList: View {
         List {
             Section {
                 NavigationLink {
-                    EditFilterView(filter: EditedFilter(), create: true)
+                    EditFilterView(filter: EditedFilter(), create: true, originallyExpired: false)
                 } label: {
                     Label("Add Filter", systemImage: "plus")
                         .foregroundColor(.accentColor)
@@ -88,7 +88,7 @@ struct FiltersList: View {
             Section {
                 ForEach(filters, id: \.id) { filter in
                     NavigationLink {
-                        EditFilterView(filter: EditedFilter(filter), create: false)
+                        EditFilterView(filter: EditedFilter(filter), create: false, originallyExpired: filter.expiresAt != nil && filter.expiresAt! <= Date())
                     } label: {
                         FilterRow(filter: filter)
                     }