Add Safari Web Extension

.gitignore

@@ -1,3 +1,11 @@
 .DS_Store
 *.pem
 *.zip
+xcuserdata/
+*.hmap
+*.ipa
+*.dSYM.zip
+*.dSYM
+timeline.xctimeline
+playground.xcworkspace
+.build/

safari/recipe-filter/recipe-filter Extension/Info.plist

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+<?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>CFBundleDevelopmentRegion</key>
+	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleDisplayName</key>
+	<string>recipe-filter Extension</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>$(PRODUCT_BUNDLE_PACKAGE_TYPE)</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+	<key>LSMinimumSystemVersion</key>
+	<string>$(MACOSX_DEPLOYMENT_TARGET)</string>
+	<key>NSExtension</key>
+	<dict>
+		<key>NSExtensionPointIdentifier</key>
+		<string>com.apple.Safari.web-extension</string>
+		<key>NSExtensionPrincipalClass</key>
+		<string>$(PRODUCT_MODULE_NAME).SafariWebExtensionHandler</string>
+	</dict>
+</dict>
+</plist>

safari/recipe-filter/recipe-filter Extension/SafariWebExtensionHandler.swift

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+//
+//  SafariWebExtensionHandler.swift
+//  recipe-filter Extension
+//
+//  Created by sean on 2/16/21.
+//
+
+import SafariServices
+import os.log
+
+let SFExtensionMessageKey = "message"
+
+class SafariWebExtensionHandler: NSObject, NSExtensionRequestHandling {
+
+	func beginRequest(with context: NSExtensionContext) {
+        let item = context.inputItems[0] as! NSExtensionItem
+        let message = item.userInfo?[SFExtensionMessageKey]
+        os_log(.default, "Received message from browser.runtime.sendNativeMessage: %@", message as! CVarArg)
+
+        let response = NSExtensionItem()
+        response.userInfo = [ SFExtensionMessageKey: [ "Response to": message ] ]
+
+        context.completeRequest(returningItems: [response], completionHandler: nil)
+    }
+
+}

safari/recipe-filter/recipe-filter Extension/recipe_filter_Extension.entitlements

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+<?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>com.apple.security.app-sandbox</key>
+    <true/>
+    <key>com.apple.security.files.user-selected.read-only</key>
+    <true/>
+</dict>
+</plist>