Migrate ChatTab to latest TCA

Author: intitni

Tool/Sources/ChatTab/ChatTab.swift

@@ -3,6 +3,7 @@ import Foundation
 import SwiftUI
 
 /// The information of a tab.
+@ObservableState
 public struct ChatTabInfo: Identifiable, Equatable {
     public var id: String
     public var title: String
@@ -52,7 +53,7 @@ public protocol ChatTabType {
 }
 
 /// The base class for all chat tabs.
-open class BaseChatTab {
+open class BaseChatTab: NSObject {
     /// A wrapper to support dynamic update of title in view.
     struct ContentView: View {
         var buildView: () -> any View
@@ -61,18 +62,23 @@ open class BaseChatTab {
         }
     }
 
-    public var id: String { chatTabViewStore.id }
-    public var title: String { chatTabViewStore.title }
+    public var id: String = ""
+    public var title: String = ""
     /// The store for chat tab info. You should only access it after `start` is called.
     public let chatTabStore: StoreOf<ChatTabItem>
-    /// The view store for chat tab info. You should only access it after `start` is called.
-    public let chatTabViewStore: ViewStoreOf<ChatTabItem>
 
     private var didStart = false
+    private var storeObservation: ObservationToken?
 
     public init(store: StoreOf<ChatTabItem>) {
         chatTabStore = store
-        chatTabViewStore = ViewStore(store)
+        super.init()
+        
+        storeObservation = observe { [weak self] in
+            guard let self else { return }
+            self.title = store.title
+            self.id = store.id
+        }
     }
 
     /// The view for this chat tab.
@@ -220,12 +226,12 @@ public class EmptyChatTab: ChatTab {
     public convenience init(id: String) {
         self.init(store: .init(
             initialState: .init(id: id, title: "Empty-\(id)"),
-            reducer: ChatTabItem()
+            reducer: { ChatTabItem() }
         ))
     }
 
     public func start() {
-        chatTabViewStore.send(.updateTitle("Empty-\(id)"))
+        chatTabStore.send(.updateTitle("Empty-\(id)"))
     }
 }
 

Tool/Sources/ChatTab/ChatTabItem.swift

@@ -13,7 +13,8 @@ public struct AnyChatTabBuilder: Equatable {
     }
 }
 
-public struct ChatTabItem: ReducerProtocol {
+@Reducer
+public struct ChatTabItem {
     public typealias State = ChatTabInfo
 
     public enum Action: Equatable {
@@ -26,7 +27,7 @@ public struct ChatTabItem: ReducerProtocol {
 
     public init() {}
 
-    public var body: some ReducerProtocol<State, Action> {
+    public var body: some ReducerOf<Self> {
         Reduce { state, action in
             switch action {
             case let .updateTitle(title):

Tool/Sources/ChatTab/ChatTabPool.swift

@@ -8,7 +8,7 @@ public final class ChatTabPool {
     public var createStore: (String) -> StoreOf<ChatTabItem> = { id in
         .init(
             initialState: .init(id: id, title: ""),
-            reducer: ChatTabItem()
+            reducer: { ChatTabItem() }
         )
     }
 
@@ -52,3 +52,4 @@ public extension EnvironmentValues {
         set { self[ChatTabPoolEnvironmentKey.self] = newValue }
     }
 }
+