Local Server

.swiftpm/xcode/xcuserdata/kean.xcuserdatad/xcschemes/xcschememanagement.plist

@@ -4,10 +4,20 @@
 <dict>
 	<key>SchemeUserState</key>
 	<dict>
+		<key>GutenbergKit-Package.xcscheme_^#shared#^_</key>
+		<dict>
+			<key>orderHint</key>
+			<integer>0</integer>
+		</dict>
 		<key>GutenbergKit.xcscheme_^#shared#^_</key>
 		<dict>
 			<key>orderHint</key>
-			<integer>1</integer>
+			<integer>2</integer>
+		</dict>
+		<key>GutenbergKitTests.xcscheme_^#shared#^_</key>
+		<dict>
+			<key>orderHint</key>
+			<integer>2</integer>
 		</dict>
 		<key>pg (Playground) 1.xcscheme</key>
 		<dict>
@@ -52,5 +62,13 @@
 			<integer>0</integer>
 		</dict>
 	</dict>
+	<key>SuppressBuildableAutocreation</key>
+	<dict>
+		<key>GutenbergKit</key>
+		<dict>
+			<key>primary</key>
+			<true/>
+		</dict>
+	</dict>
 </dict>
 </plist>

Gutenberg-Info.plist

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>NSAppTransportSecurity</key>
+	<dict/>
+</dict>
+</plist>

Gutenberg.xcodeproj/project.pbxproj

@@ -17,6 +17,7 @@
 /* Begin PBXFileReference section */
 		0C4F598B2BEFF4970028BD96 /* Gutenberg.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = Gutenberg.app; sourceTree = BUILT_PRODUCTS_DIR; };
 		0C61AA062C25109600FA7E46 /*  */ = {isa = PBXFileReference; lastKnownFileType = wrapper; name = ""; sourceTree = "<group>"; };
+		0C6C31992C2AE9CD00F2B038 /* Gutenberg-Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist; path = "Gutenberg-Info.plist"; sourceTree = "<group>"; };
 		0CF6E0402BEFF59600EDEE8A /* Assets.xcassets */ = {isa = PBXFileReference; lastKnownFileType = folder.assetcatalog; path = Assets.xcassets; sourceTree = "<group>"; };
 		0CF6E0422BEFF59600EDEE8A /* Preview Assets.xcassets */ = {isa = PBXFileReference; lastKnownFileType = folder.assetcatalog; path = "Preview Assets.xcassets"; sourceTree = "<group>"; };
 		0CF6E0432BEFF59600EDEE8A /* GutenbergApp.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = GutenbergApp.swift; sourceTree = "<group>"; };
@@ -38,6 +39,7 @@
 		0C4F59822BEFF4970028BD96 = {
 			isa = PBXGroup;
 			children = (
+				0C6C31992C2AE9CD00F2B038 /* Gutenberg-Info.plist */,
 				0C61AA062C25109600FA7E46 /*  */,
 				0CF6E03F2BEFF59600EDEE8A /* GutenbergDemo */,
 				0C4F598C2BEFF4970028BD96 /* Products */,
@@ -290,6 +292,7 @@
 				DEVELOPMENT_TEAM = NR8DLKJ7E6;
 				ENABLE_PREVIEWS = YES;
 				GENERATE_INFOPLIST_FILE = YES;
+				INFOPLIST_FILE = "Gutenberg-Info.plist";
 				INFOPLIST_KEY_UIApplicationSceneManifest_Generation = YES;
 				INFOPLIST_KEY_UIApplicationSupportsIndirectInputEvents = YES;
 				INFOPLIST_KEY_UILaunchScreen_Generation = YES;
@@ -319,6 +322,7 @@
 				DEVELOPMENT_TEAM = NR8DLKJ7E6;
 				ENABLE_PREVIEWS = YES;
 				GENERATE_INFOPLIST_FILE = YES;
+				INFOPLIST_FILE = "Gutenberg-Info.plist";
 				INFOPLIST_KEY_UIApplicationSceneManifest_Generation = YES;
 				INFOPLIST_KEY_UIApplicationSupportsIndirectInputEvents = YES;
 				INFOPLIST_KEY_UILaunchScreen_Generation = YES;

Gutenberg.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved

@@ -0,0 +1,14 @@
+{
+  "pins" : [
+    {
+      "identity" : "embassy",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/envoy/Embassy.git",
+      "state" : {
+        "revision" : "8469f2c1b334a7c1c3566e2cb2f97826c7cca898",
+        "version" : "4.1.6"
+      }
+    }
+  ],
+  "version" : 2
+}

Gutenberg.xcodeproj/xcuserdata/kean.xcuserdatad/xcschemes/xcschememanagement.plist

@@ -7,7 +7,7 @@
 		<key>Gutenberg.xcscheme_^#shared#^_</key>
 		<dict>
 			<key>orderHint</key>
-			<integer>0</integer>
+			<integer>1</integer>
 		</dict>
 	</dict>
 </dict>

GutenbergDemo/ContentView.swift

@@ -12,7 +12,10 @@ struct ContentView: View {
 
 struct EditorView: UIViewControllerRepresentable {
     func makeUIViewController(context: Context) -> EditorViewController {
-        EditorViewController(service: .init(client: Client()))
+        let viewController = EditorViewController(service: .init(client: Client()))
+        viewController.webView.isInspectable = true
+        return viewController
+
     }
 
     func updateUIViewController(_ uiViewController: EditorViewController, context: Context) {

Package.swift

@@ -9,13 +9,18 @@ let package = Package(
     products: [
         .library(name: "GutenbergKit", targets: ["GutenbergKit"])
     ],
+    dependencies: [
+        .package(url: "https://github.com/envoy/Embassy.git", from: "4.0.0"),
+    ],
     targets: [
         .target(
             name: "GutenbergKit",
+            dependencies: [.product(name: "Embassy", package: "Embassy")],
             resources: [.copy("Gutenberg")]
         ),
         .testTarget(
             name: "GutenbergKitTests",
-            dependencies: ["GutenbergKit"]),
+            dependencies: ["GutenbergKit"]
+        )
     ]
 )

Sources/GutenbergKit/Sources/EditorLocalServer.swift

@@ -0,0 +1,125 @@
+import Embassy
+import Foundation
+
+// FIXME: rework
+// This is just for the demo and is absolutely NOT production ready. It should
+// be replaced with another framework.
+final class EditorLocalServer {
+    var eventLoop: EventLoop!
+    var eventLoopThreadCondition: NSCondition!
+    var eventLoopThread: Thread!
+    var server: DefaultHTTPServer!
+
+    func run() throws {
+        NSLog("\(Date.now.timeIntervalSince1970))): EditorLocalServer.run")
+
+        eventLoop = try SelectorEventLoop(selector: try KqueueSelector())
+
+        server = DefaultHTTPServer(eventLoop: eventLoop, port: EditorConstants.port, app: makeApp())
+        try server.start()
+
+        NSLog("\(Date.now.timeIntervalSince1970): EditorLocalServer.didStart")
+
+        eventLoopThreadCondition = NSCondition()
+        eventLoopThread = Thread(target: self, selector: #selector(runEventLoop), object: nil)
+        eventLoopThread.start()
+
+        NSLog("\(Date.now.timeIntervalSince1970): EditorLocalServer.didStartThread")
+    }
+
+    private func makeApp() -> SWSGI {
+        { (environment: [String: Any], startResponse: ((String, [(String, String)]) -> Void), sendBody: ((Data) -> Void)) in
+
+            guard let request = HTTPRequest(environment: environment) else {
+                return
+            }
+
+            NSLog("\(Date.now.timeIntervalSince1970): request: \(request)")
+
+            let path = request.path
+            if path.hasPrefix("/\(EditorConstants.gutenbergLocalPath)"), let url = URL(string: path) {
+                let resource = url.deletingPathExtension().lastPathComponent
+                let subdirectory = url.deletingLastPathComponent().absoluteString
+
+                guard let fileURL = Bundle.module.url(forResource: resource, withExtension: url.pathExtension, subdirectory: subdirectory) else {
+                    // TODO: safe error handling
+                    fatalError("missing resource: \(path)")
+                }
+
+                let data = try! Data(contentsOf: fileURL)
+
+                // TODO: send date
+                // TODO: pass proper contnet-type
+
+                let contentTypes = [
+                    "js": "text/javascript",
+                    "html": "text/html",
+                    "css": "text/css"
+                ]
+
+                startResponse("200 OK", [
+                    ("Content-Length", String(data.count)),
+                    ("Content-Type", "\(contentTypes[url.pathExtension]!); charset=utf-8")
+                ])
+                // TODO: copy these outside of the module?
+
+                sendBody(data)
+                sendBody(Data())
+
+                return
+            }
+
+            // TODO: throw error
+            NSLog("unhandled request: \(request)")
+
+        }
+    }
+
+
+    @objc private func runEventLoop() {
+        NSLog("\(Date.now.timeIntervalSince1970): EditorLocalServer.runEventLoop")
+        eventLoop.runForever()
+        eventLoopThreadCondition.lock()
+        eventLoopThreadCondition.signal()
+        eventLoopThreadCondition.unlock()
+    }
+}
+
+enum EditorConstants {
+    static let port = 47197
+    static let gutenbergLocalPath = "Gutenberg"
+}
+
+//"SERVER_NAME": "[::1]",
+//"SERVER_PROTOCOL" : "HTTP/1.1",
+//"SERVER_PORT" : "53479",
+//"REQUEST_METHOD": "GET",
+//"SCRIPT_NAME" : "",
+//"PATH_INFO" : "/",
+//"HTTP_HOST": "[::1]:8889",
+//"HTTP_USER_AGENT" : "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.102 Safari/537.36",
+//"HTTP_ACCEPT_LANGUAGE" : "en-US,en;q=0.8,zh-TW;q=0.6,zh;q=0.4,zh-CN;q=0.2",
+//"HTTP_CONNECTION" : "keep-alive",
+//"HTTP_ACCEPT" : "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8",
+//"HTTP_ACCEPT_ENCODING" : "gzip, deflate, sdch",
+//"swsgi.version" : "0.1",
+//"swsgi.input" : (Function),
+//"swsgi.error" : "",
+//"swsgi.multiprocess" : false,
+//"swsgi.multithread" : false,
+//"swsgi.url_scheme" : "http",
+//"swsgi.run_once" : false
+
+private struct HTTPRequest {
+    let method: String
+    let path: String
+
+    init?(environment: [String: Any]) {
+        guard let method = environment["REQUEST_METHOD"] as? String,
+              let path = environment["PATH_INFO"] as? String else {
+            return nil
+        }
+        self.method = method
+        self.path = path
+    }
+}

Sources/GutenbergKit/Sources/EditorService.swift

@@ -7,6 +7,7 @@ import Foundation
 @MainActor
 public final class EditorService {
     private let client: EditorNetworkingClient
+    private let server: EditorLocalServer
 
     @Published private(set) var blockTypes: [EditorBlockType] = []
     @Published private(set) var rawBlockTypesResponseData: Data?
@@ -15,6 +16,11 @@ public final class EditorService {
 
     public init(client: EditorNetworkingClient) {
         self.client = client
+        self.server = EditorLocalServer()
+    }
+
+    func run() throws {
+        try server.run()
     }
 
     /// Prefetches the settings used by the editor.

Sources/GutenbergKit/Sources/EditorViewController.swift

@@ -83,7 +83,11 @@ public final class EditorViewController: UIViewController, GutenbergEditorContro
 //
 //        }.store(in: &cancellables)
 
-        loadEditor()
+        do {
+            try loadEditor()
+        } catch {
+            delegate?.editor(self, didEncounterCriticalError: error)
+        }
     }
 
     // TODO: move
@@ -106,9 +110,15 @@ public final class EditorViewController: UIViewController, GutenbergEditorContro
         }
     }
 
-    private func loadEditor() {
-        let reactAppURL = Bundle.module.url(forResource: "index", withExtension: "html", subdirectory: "Gutenberg")!
-        webView.loadFileURL(reactAppURL, allowingReadAccessTo: Bundle.module.resourceURL!)
+    private func loadEditor() throws {
+        try service.run()
+
+        // FIXME: for some reason it adds 2 seconds delay
+        let localAppURL = URL(string: "http://localhost:\(EditorConstants.port)/\(EditorConstants.gutenbergLocalPath)/index.html")!
+        webView.load(URLRequest(url: localAppURL))
+
+//        let reactAppURL = Bundle.module.url(forResource: "index", withExtension: "html", subdirectory: "Gutenberg")!
+//        webView.loadFileURL(reactAppURL, allowingReadAccessTo: Bundle.module.resourceURL!)
     }
 
     // MARK: - Public API