Faster / Cached ServerDate decoding

Packages/Models/Sources/Models/Account.swift

@@ -59,7 +59,7 @@ public struct Account: Codable, Identifiable, Equatable, Hashable {
           header: URL(string: "https://files.mastodon.social/media_attachments/files/003/134/405/original/04060b07ddf7bb0b.png")!,
           acct: "johnm@example.com",
           note: .init(stringValue: "Some content"),
-          createdAt: "2022-12-16T10:20:54.000Z",
+          createdAt: ServerDate(),
           followersCount: 10,
           followingCount: 10,
           statusesCount: 10,

Packages/Models/Sources/Models/Alias/ServerDate.swift

@@ -1,13 +1,16 @@
 import Foundation
 
-public typealias ServerDate = String
+fileprivate enum CodingKeys: CodingKey {
+  case asDate, relativeFormatted, shortDateFormatted
+}
 
-extension ServerDate {
-  
-  public static var sampleDate: ServerDate {
-    createdAtDateFormatter.string(from: Date()-100)
-  }
+public struct ServerDate: Codable, Hashable, Equatable {
+  public let asDate: Date
+  public let relativeFormatted: String
+  public let shortDateFormatted: String
   
+  private static let calendar = Calendar(identifier: .gregorian)
+    
   private static var createdAtDateFormatter: DateFormatter = {
     let dateFormatter = DateFormatter()
     dateFormatter.calendar = .init(identifier: .iso8601)
@@ -15,31 +18,47 @@ extension ServerDate {
     dateFormatter.timeZone = .init(abbreviation: "UTC")
     return dateFormatter
   }()
-
+  
   private static var createdAtRelativeFormatter: RelativeDateTimeFormatter = {
     let dateFormatter = RelativeDateTimeFormatter()
     dateFormatter.unitsStyle = .short
     return dateFormatter
   }()
-
+  
   private static var createdAtShortDateFormatted: DateFormatter = {
     let dateFormatter = DateFormatter()
     dateFormatter.dateStyle = .short
     dateFormatter.timeStyle = .none
     return dateFormatter
   }()
-
-  private static let calendar = Calendar(identifier: .gregorian)
-
-  public var asDate: Date {
-    Self.createdAtDateFormatter.date(from: self)!
+  
+  public init() {
+    asDate = Date()-100
+    relativeFormatted = Self.createdAtRelativeFormatter.localizedString(for: asDate, relativeTo: Date())
+    shortDateFormatted = Self.createdAtShortDateFormatted.string(from: asDate)
   }
-
-  public var relativeFormatted: String {
-    return Self.createdAtRelativeFormatter.localizedString(for: asDate, relativeTo: Date())
+  
+  public init(from decoder: Decoder) throws {
+    do {
+      // Decode from server
+      let container = try decoder.singleValueContainer()
+      let stringDate = try container.decode(String.self)
+      asDate = Self.createdAtDateFormatter.date(from: stringDate)!
+      relativeFormatted = Self.createdAtRelativeFormatter.localizedString(for: asDate, relativeTo: Date())
+      shortDateFormatted = Self.createdAtShortDateFormatted.string(from: asDate)
+    } catch {
+      // Decode from cache
+      let container = try decoder.container(keyedBy: CodingKeys.self)
+      asDate = try container.decode(Date.self, forKey: .asDate)
+      relativeFormatted = try container.decode(String.self, forKey: .relativeFormatted)
+      shortDateFormatted = try container.decode(String.self, forKey: .shortDateFormatted)
+    }
   }
-
-  public var shortDateFormatted: String {
-    return Self.createdAtShortDateFormatted.string(from: asDate)
+  
+  public func encode(to encoder: Encoder) throws {
+    var container = encoder.container(keyedBy: CodingKeys.self)
+    try container.encode(asDate, forKey: .asDate)
+    try container.encode(relativeFormatted, forKey: .relativeFormatted)
+    try container.encode(shortDateFormatted, forKey: .shortDateFormatted)
   }
 }

Packages/Models/Sources/Models/ConsolidatedNotification.swift

@@ -32,7 +32,7 @@ public struct ConsolidatedNotification: Identifiable {
   public static func placeholder() -> ConsolidatedNotification {
     .init(notifications: [Notification.placeholder()],
           type: .favourite,
-          createdAt: "2022-12-16T10:20:54.000Z",
+          createdAt: ServerDate(),
           accounts: [.placeholder()],
           status: .placeholder())
   }

Packages/Models/Sources/Models/Notification.swift

@@ -18,7 +18,7 @@ public struct Notification: Decodable, Identifiable {
   public static func placeholder() -> Notification {
     .init(id: UUID().uuidString,
           type: NotificationType.favourite.rawValue,
-          createdAt: "2022-12-16T10:20:54.000Z",
+          createdAt: ServerDate(),
           account: .placeholder(),
           status: .placeholder())
   }

Packages/Models/Sources/Models/Poll.swift

@@ -30,12 +30,12 @@ public struct Poll: Codable, Equatable, Hashable {
 }
 
 public struct NullableString: Codable, Equatable, Hashable {
-  public let value: String?
+  public let value: ServerDate?
 
   public init(from decoder: Decoder) throws {
     do {
       let container = try decoder.singleValueContainer()
-      value = try container.decode(String.self)
+      value = try container.decode(ServerDate.self)
     } catch {
       value = nil
     }

Packages/Models/Sources/Models/Status.swift

@@ -54,15 +54,19 @@ public protocol AnyStatus {
   var language: String? { get }
 }
 
+extension AnyStatus {
+  public var viewId: String {
+    get {
+      "\(id)\(createdAt.asDate.description)\(editedAt?.asDate.description ?? "")"
+    }
+  }
+}
+
 protocol StatusUI {
   var userMentioned: Bool? { get set }
 }
 
 public struct Status: AnyStatus, Codable, Identifiable, Equatable, Hashable, StatusUI {
-  public var viewId: String {
-    id + createdAt + (editedAt ?? "")
-  }
-
   public var userMentioned: Bool?
 
   public static func == (lhs: Status, rhs: Status) -> Bool {
@@ -105,7 +109,7 @@ public struct Status: AnyStatus, Codable, Identifiable, Equatable, Hashable, Sta
        content: .init(stringValue: "Lorem ipsum [#dolor](#) sit amet\nconsectetur [@adipiscing](#) elit\nAsed do eiusmod tempor incididunt ut labore.", parseMarkdown: forSettings),
 
        account: .placeholder(),
-       createdAt: ServerDate.sampleDate,
+       createdAt: ServerDate(),
        editedAt: nil,
        reblog: nil,
        mediaAttachments: [],
@@ -137,10 +141,6 @@ public struct Status: AnyStatus, Codable, Identifiable, Equatable, Hashable, Sta
 }
 
 public struct ReblogStatus: AnyStatus, Codable, Identifiable, Equatable, Hashable {
-  public var viewId: String {
-    id + createdAt + (editedAt ?? "")
-  }
-
   public static func == (lhs: ReblogStatus, rhs: ReblogStatus) -> Bool {
     lhs.id == rhs.id
   }
@@ -152,7 +152,7 @@ public struct ReblogStatus: AnyStatus, Codable, Identifiable, Equatable, Hashabl
   public let id: String
   public let content: HTMLString
   public let account: Account
-  public let createdAt: String
+  public let createdAt: ServerDate
   public let editedAt: ServerDate?
   public let mediaAttachments: [MediaAttachment]
   public let mentions: [Mention]

Packages/Models/Sources/Models/StatusHistory.swift

@@ -2,7 +2,7 @@ import Foundation
 
 public struct StatusHistory: Decodable, Identifiable {
   public var id: String {
-    createdAt.description
+    createdAt.asDate.description
   }
 
   public let content: HTMLString

Packages/Notifications/Sources/Notifications/Notification+Consolidated.swift

@@ -23,7 +23,7 @@ extension Array where Element == Notification {
                                         status: notification.status)
       }
       .sorted {
-        $0.createdAt > $1.createdAt
+        $0.createdAt.asDate > $1.createdAt.asDate
       }
   }
 }

Packages/Status/Sources/Status/Row/StatusRowView.swift

@@ -96,24 +96,7 @@ public struct StatusRowView: View {
       }
       .accessibilityElement(children: viewModel.isFocused ? .contain : .combine)
       .accessibilityActions {
-        // Add the individual mentions as accessibility actions
-        ForEach(viewModel.status.mentions, id: \.id) { mention in
-          Button("@\(mention.username)") {
-            routerPath.navigate(to: .accountDetail(id: mention.id))
-          }
-        }
-
-        Button(viewModel.displaySpoiler ? "status.show-more" : "status.show-less") {
-          withAnimation {
-            viewModel.displaySpoiler.toggle()
-          }
-        }
-
-        Button("@\(viewModel.status.account.username)") {
-          routerPath.navigate(to: .accountDetail(id: viewModel.status.account.id))
-        }
-
-        contextMenu
+        accesibilityActions
       }
       .background {
         Color.clear
@@ -144,6 +127,28 @@ public struct StatusRowView: View {
       }
     }
   }
+  
+  @ViewBuilder
+  private var accesibilityActions: some View {
+    // Add the individual mentions as accessibility actions
+    ForEach(viewModel.status.mentions, id: \.id) { mention in
+      Button("@\(mention.username)") {
+        routerPath.navigate(to: .accountDetail(id: mention.id))
+      }
+    }
+    
+    Button(viewModel.displaySpoiler ? "status.show-more" : "status.show-less") {
+      withAnimation {
+        viewModel.displaySpoiler.toggle()
+      }
+    }
+    
+    Button("@\(viewModel.status.account.username)") {
+      routerPath.navigate(to: .accountDetail(id: viewModel.status.account.id))
+    }
+    
+    contextMenu
+  }
 
   private func makeFilterView(filter: Filter) -> some View {
     HStack {

Packages/Timeline/Sources/Timeline/TimelineCache.swift

@@ -45,7 +45,7 @@ public actor TimelineCache {
       return try await engine
         .readAllData()
         .map { try decoder.decode(Status.self, from: $0) }
-        .sorted(by: { $0.createdAt > $1.createdAt })
+        .sorted(by: { $0.createdAt.asDate > $1.createdAt.asDate })
     } catch {
       return nil
     }