From 7e8eaca72eae910d6d3b6272c263c6c3a10b755c Mon Sep 17 00:00:00 2001
From: Hiroshi Kimura <muukii.app@gmail.com>
Date: Tue, 16 May 2023 13:14:22 +0900
Subject: [PATCH] Add SwiftUIHostingViewController (#5)

---
 .../SwiftUIHostingViewController.swift        | 40 +++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 Sources/SwiftUIHosting/SwiftUIHostingViewController.swift

diff --git a/Sources/SwiftUIHosting/SwiftUIHostingViewController.swift b/Sources/SwiftUIHosting/SwiftUIHostingViewController.swift
new file mode 100644
index 0000000..8c2e2ac
--- /dev/null
+++ b/Sources/SwiftUIHosting/SwiftUIHostingViewController.swift
@@ -0,0 +1,40 @@
+import SwiftUI
+
+open class SwiftUIHostingViewController: UIViewController {
+
+  public let configuration: SwiftUIHostingView.Configuration
+  private let content: (UIViewController) -> AnyView
+
+  public init<Content: View>(
+    configuration: SwiftUIHostingView.Configuration = .init(),
+    content: @escaping (Self) -> Content
+  ) {
+    self.configuration = configuration
+    self.content = { AnyView(content(unsafeDowncast($0, to: Self.self))) }
+    super.init(nibName: nil, bundle: nil)
+  }
+
+  @available(*, unavailable)
+  public required init?(coder: NSCoder) {
+    fatalError("init(coder:) has not been implemented")
+  }
+
+  open override func viewDidLoad() {
+
+    let _content = content(self)
+
+    let contentView = SwiftUIHostingView(configuration: configuration) { _content }
+
+    view.addSubview(contentView)
+    contentView.translatesAutoresizingMaskIntoConstraints = false
+
+    NSLayoutConstraint.activate([
+      contentView.topAnchor.constraint(equalTo: view.topAnchor),
+      contentView.rightAnchor.constraint(equalTo: view.rightAnchor),
+      contentView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
+      contentView.leftAnchor.constraint(equalTo: view.leftAnchor),
+    ])
+
+  }
+
+}