From b4f10420ce30ff398b11be5232de56e34333bbd7 Mon Sep 17 00:00:00 2001
From: Kyle <kyle201817146@gmail.com>
Date: Mon, 26 Feb 2024 02:10:26 +0800
Subject: [PATCH] Add GraphDelegate and update App related

---
 .../AppOrganization/Graph/AppGraph.swift      | 10 ++++-
 .../TODO/OpenSwiftUIApplication.swift         |  4 +-
 .../Internal/Graph/GraphDelegate.swift        | 13 ++++++
 .../Internal/Graph/GraphHost.swift            | 43 ++++++++++++++++---
 4 files changed, 61 insertions(+), 9 deletions(-)
 create mode 100644 Sources/OpenSwiftUI/Internal/Graph/GraphDelegate.swift

diff --git a/Sources/OpenSwiftUI/AppStructure/AppOrganization/Graph/AppGraph.swift b/Sources/OpenSwiftUI/AppStructure/AppOrganization/Graph/AppGraph.swift
index e0d489d..e3931b6 100644
--- a/Sources/OpenSwiftUI/AppStructure/AppOrganization/Graph/AppGraph.swift
+++ b/Sources/OpenSwiftUI/AppStructure/AppOrganization/Graph/AppGraph.swift
@@ -35,8 +35,16 @@ final class AppGraph: GraphHost {
     }()
     
     var didCollectLaunchProfile: Bool = false
+
+    // TODO
+    init(app: some App) {
+        let data = GraphHost.Data()
+        super.init(data: data)
+    }
     
-    init(app _: some App) {}
+    // MARK: - Override Methods
+
+    // MARK: - Profile related
     
     func extendedLaunchTestName() -> String? { nil }
     
diff --git a/Sources/OpenSwiftUI/AppStructure/AppOrganization/TODO/OpenSwiftUIApplication.swift b/Sources/OpenSwiftUI/AppStructure/AppOrganization/TODO/OpenSwiftUIApplication.swift
index 54dc1d8..d34fd4a 100644
--- a/Sources/OpenSwiftUI/AppStructure/AppOrganization/TODO/OpenSwiftUIApplication.swift
+++ b/Sources/OpenSwiftUI/AppStructure/AppOrganization/TODO/OpenSwiftUIApplication.swift
@@ -32,12 +32,10 @@ import Foundation
 #endif
 
 func runApp(_ app: some App) -> Never {
-    #if canImport(Darwin)
     let graph = AppGraph(app: app)
     graph.startProfilingIfNecessary()
-//    graph.instantiate()
+    graph.instantiate()
     AppGraph.shared = graph
-    #endif
     KitRendererCommon()
 }
 
diff --git a/Sources/OpenSwiftUI/Internal/Graph/GraphDelegate.swift b/Sources/OpenSwiftUI/Internal/Graph/GraphDelegate.swift
new file mode 100644
index 0000000..0ab76db
--- /dev/null
+++ b/Sources/OpenSwiftUI/Internal/Graph/GraphDelegate.swift
@@ -0,0 +1,13 @@
+//
+//  GraphDelegate.swift
+//  OpenSwiftUI
+//
+//  Created by Kyle on 2024/2/26.
+//  Lastest Version: iOS 15.5
+//  Status: Complete
+
+protocol GraphDelegate: AnyObject {
+    func updateGraph<V>(body: (GraphHost) -> V) -> V
+    func graphDidChange()
+    func preferencesDidChange()
+}
diff --git a/Sources/OpenSwiftUI/Internal/Graph/GraphHost.swift b/Sources/OpenSwiftUI/Internal/Graph/GraphHost.swift
index fab39cf..476179e 100644
--- a/Sources/OpenSwiftUI/Internal/Graph/GraphHost.swift
+++ b/Sources/OpenSwiftUI/Internal/Graph/GraphHost.swift
@@ -3,21 +3,50 @@
 internal import OpenGraphShims
 
 class GraphHost {
-    
-//    var data: Data
-//    var isInstantiated: Swift.Bool
+    var data: Data
+    var isInstantiated: Bool
 //    var hostPreferenceValues: OptionalAttribute<PreferenceList>
 //    var lastHostPreferencesSeed: VersionSeed
-//    var pendingTransactions: [SwiftUI.(AsyncTransaction in _30C09FF16BC95EC5173809B57186CAC3)]
+//    var pendingTransactions: [AsyncTransaction]
 //    var inTransaction: Bool
 //    var continuations: [() -> ()]
 //    var mayDeferUpdate: Bool
 //    var removedState: RemovedState
     
+    // FIXME
     static var isUpdating = false
+    
+    //    private static let shared = OGGraphCreate()
 
+    // MARK: - non final methods
     
-//    private static let shared = OGGraphCreate()
+    init(data: Data) {
+        self.data = data
+        isInstantiated = false
+        // TODO
+    }
+    
+    func invalidate() {
+        // TODO
+    }
+    
+    var graphDelegate: GraphDelegate? { nil }
+    var parentHost: GraphHost? { nil }
+    func instantiateOutputs() {}
+    func uninstantiateOutputs() {}
+    func timeDidChange() {}
+    func isHiddenForReuseDidChange() {}
+    
+    // MARK: - final methods
+    
+    final func instantiate() {
+        guard !isInstantiated else {
+            return
+        }
+        graphDelegate?.updateGraph { _ in }
+        instantiateOutputs()
+        isInstantiated = true
+    }
 }
 
 // MARK: - GraphHost.Data
@@ -40,6 +69,10 @@ extension GraphHost {
         @Attribute
         var transaction: Transaction
         var inputs: _GraphInputs
+        
+        init() {
+            fatalError("TODO")
+        }
     }
 }