Open in trust (trustwallet#425)

* Add open in trust action extension

* Add URLNavigatorCoordinator

* 1. OpenInTrustError conforms to LocalizedError
2. update scheme (browse -> browser)
3. lazy init viewModel
4. show browser tab

* code cleanup

* present alert in main thread

* Add localizable strings

* Add URLSchemes constant; use error.localizedDescription

* separate trust://

* update Podfile.lock

* Fix tests

OpenInTrust/Info.plist

@@ -0,0 +1,45 @@
+<?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>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleDisplayName</key>
+	<string>OpenInTrust</string>
+	<key>CFBundleExecutable</key>
+	<string>$(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>XPC!</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+	<key>NSExtension</key>
+	<dict>
+		<key>NSExtensionAttributes</key>
+		<dict>
+			<key>NSExtensionActivationRule</key>
+			<dict>
+				<key>NSExtensionActivationSupportsText</key>
+				<true/>
+				<key>NSExtensionActivationSupportsWebPageWithMaxCount</key>
+				<integer>1</integer>
+				<key>NSExtensionActivationSupportsWebURLWithMaxCount</key>
+				<string>1</string>
+			</dict>
+		</dict>
+		<key>NSExtensionPrincipalClass</key>
+		<string>$(PRODUCT_MODULE_NAME).OpenInTrustController</string>
+		<key>NSExtensionPointIdentifier</key>
+		<string>com.apple.ui-services</string>
+	</dict>
+	<key>LSHasLocalizedDisplayName</key>
+	<true/>
+</dict>
+</plist>

OpenInTrust/Media.xcassets/Contents.json

@@ -0,0 +1,6 @@
+{
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

OpenInTrust/Media.xcassets/ExtensionIcon.appiconset/Contents.json

@@ -0,0 +1,157 @@
+{
+  "images" : [
+    {
+      "size" : "20x20",
+      "idiom" : "iphone",
+      "filename" : "[email protected]",
+      "scale" : "2x"
+    },
+    {
+      "size" : "20x20",
+      "idiom" : "iphone",
+      "filename" : "[email protected]",
+      "scale" : "3x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "iphone",
+      "filename" : "[email protected]",
+      "scale" : "1x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "iphone",
+      "filename" : "[email protected]",
+      "scale" : "2x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "iphone",
+      "filename" : "[email protected]",
+      "scale" : "3x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "iphone",
+      "filename" : "[email protected]",
+      "scale" : "2x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "iphone",
+      "filename" : "[email protected]",
+      "scale" : "3x"
+    },
+    {
+      "size" : "57x57",
+      "idiom" : "iphone",
+      "filename" : "[email protected]",
+      "scale" : "1x"
+    },
+    {
+      "size" : "57x57",
+      "idiom" : "iphone",
+      "filename" : "[email protected]",
+      "scale" : "2x"
+    },
+    {
+      "size" : "60x60",
+      "idiom" : "iphone",
+      "filename" : "[email protected]",
+      "scale" : "2x"
+    },
+    {
+      "size" : "60x60",
+      "idiom" : "iphone",
+      "filename" : "[email protected]",
+      "scale" : "3x"
+    },
+    {
+      "size" : "20x20",
+      "idiom" : "ipad",
+      "filename" : "[email protected]",
+      "scale" : "1x"
+    },
+    {
+      "size" : "20x20",
+      "idiom" : "ipad",
+      "filename" : "[email protected]",
+      "scale" : "2x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "ipad",
+      "filename" : "[email protected]",
+      "scale" : "1x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "ipad",
+      "filename" : "[email protected]",
+      "scale" : "2x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "ipad",
+      "filename" : "[email protected]",
+      "scale" : "1x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "ipad",
+      "filename" : "[email protected]",
+      "scale" : "2x"
+    },
+    {
+      "size" : "50x50",
+      "idiom" : "ipad",
+      "filename" : "[email protected]",
+      "scale" : "1x"
+    },
+    {
+      "size" : "50x50",
+      "idiom" : "ipad",
+      "filename" : "[email protected]",
+      "scale" : "2x"
+    },
+    {
+      "size" : "72x72",
+      "idiom" : "ipad",
+      "filename" : "[email protected]",
+      "scale" : "1x"
+    },
+    {
+      "size" : "72x72",
+      "idiom" : "ipad",
+      "filename" : "[email protected]",
+      "scale" : "2x"
+    },
+    {
+      "size" : "76x76",
+      "idiom" : "ipad",
+      "filename" : "[email protected]",
+      "scale" : "1x"
+    },
+    {
+      "size" : "76x76",
+      "idiom" : "ipad",
+      "filename" : "[email protected]",
+      "scale" : "2x"
+    },
+    {
+      "size" : "83.5x83.5",
+      "idiom" : "ipad",
+      "filename" : "[email protected]",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "ios-marketing",
+      "size" : "1024x1024",
+      "scale" : "1x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

OpenInTrust/OpenInTrust.entitlements

@@ -0,0 +1,5 @@
+<?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/>
+</plist>

OpenInTrust/Types/DispatchMainSafe.swift

@@ -0,0 +1,11 @@
+// Copyright SIX DAY LLC. All rights reserved.
+
+import Foundation
+
+public func dispatch_main_safe(block: @escaping () -> Void) {
+    if Thread.isMainThread {
+        block()
+    } else {
+        DispatchQueue.main.async(execute: block)
+    }
+}

OpenInTrust/Types/OpenInTrustError+Message.swift

@@ -0,0 +1,21 @@
+// Copyright SIX DAY LLC. All rights reserved.
+
+import Foundation
+
+extension OpenInTrustError {
+
+    public var errorDescription: String? {
+        switch self {
+        case .invalidContext:
+            return NSLocalizedString("openintrust.error.context", value: "Extension context is invalid", comment: "")
+        case .invalidProvider:
+            return NSLocalizedString("openintrust.error.provider", value: "Extension item provider is invalid", comment: "")
+        case .invalidURL:
+            return NSLocalizedString("openintrust.error.url", value: "Can't find valid url", comment: "")
+        case .loadItemFailed:
+            return NSLocalizedString("openintrust.error.loadItem", value: "Can't find valid url", comment: "")
+        case .cancel:
+            return NSLocalizedString("openintrust.error.cancel", value: "Canceled by user", comment: "")
+        }
+    }
+}

OpenInTrust/Types/OpenInTrustError.swift

@@ -0,0 +1,11 @@
+// Copyright SIX DAY LLC. All rights reserved.
+
+import UIKit
+
+enum OpenInTrustError: LocalizedError {
+    case invalidContext
+    case invalidProvider
+    case invalidURL
+    case loadItemFailed
+    case cancel
+}

OpenInTrust/Types/OpenInTrustScheme.swift

@@ -0,0 +1,13 @@
+// Copyright SIX DAY LLC. All rights reserved.
+
+import Foundation
+
+struct SchemeBuilder {
+    let target: URL
+    let scheme = "trust"
+
+    func build() -> URL {
+        let url = URL(string: "\(scheme)://browser?target=\(target.absoluteString)") ?? URL(string: "\(scheme)://")!
+        return url
+    }
+}

OpenInTrust/ViewControllers/OpenInTrustController.swift

@@ -0,0 +1,97 @@
+// Copyright SIX DAY LLC. All rights reserved.
+
+import UIKit
+import MobileCoreServices
+
+class OpenInTrustController: UIViewController {
+
+    lazy var viewModel: OpenInTrustViewModel = {
+        let viewModel = OpenInTrustViewModel(context: self.extensionContext ?? NSExtensionContext())
+        return viewModel
+    }()
+    override var preferredStatusBarStyle: UIStatusBarStyle {
+        return .lightContent
+    }
+
+    override var prefersStatusBarHidden: Bool {
+        return false
+    }
+
+    override func loadView() {
+        view = UIView()
+        view.backgroundColor = .white
+        view.alpha = 0.3
+    }
+
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        run()
+    }
+
+    func run() {
+        guard extensionContext != .none else {
+            showError(.invalidContext)
+            return
+        }
+        guard let provider = viewModel.findItemProvider() else {
+            return showError(.invalidProvider)
+        }
+
+        viewModel.loadItem(provider: provider) { [unowned self] (result) in
+            switch result {
+            case .success(let url):
+                self.openInTrust(url: url)
+            case .failure(let error):
+                self.showError(error)
+            }
+        }
+    }
+
+    func done() {
+        self.viewModel.context.completeRequest(returningItems: nil, completionHandler: nil)
+    }
+
+    func cancel(_ error: OpenInTrustError) {
+        self.viewModel.context.cancelRequest(withError: error)
+    }
+
+    private func openInTrust(url: URL) {
+        let alert = UIAlertController(title: viewModel.confirmAlertTitle, message: String(format: viewModel.confirmAlertMessage, url.absoluteString), preferredStyle: .alert)
+        alert.addAction(UIAlertAction(title: self.viewModel.alertOK, style: .default, handler: { [unowned self] _ in
+            let builder = SchemeBuilder(target: url)
+            self.openUrl(builder.build())
+            self.done()
+        }))
+        alert.addAction(UIAlertAction(title: self.viewModel.alertCancel, style: .cancel, handler: { [unowned self] _ in
+            self.done()
+        }))
+        alert.popoverPresentationController?.sourceView = view
+        alert.popoverPresentationController?.sourceRect = view.frame
+        dispatch_main_safe {
+            self.present(alert, animated: true, completion: nil)
+        }
+    }
+
+    private func openUrl(_ url: URL) {
+        var responder = self as UIResponder?
+        while let r = responder {
+            let sel = NSSelectorFromString("openURL:")
+            if r.responds(to: sel) {
+                r.perform(sel, with: url)
+            }
+            responder = r.next
+        }
+    }
+
+    private func showError(_ error: OpenInTrustError) {
+        let alert = UIAlertController(title: viewModel.errorAlertTitle, message: error.localizedDescription, preferredStyle: .alert)
+        alert.addAction(UIAlertAction(title: viewModel.alertOK, style: .default, handler: { [unowned self] _ in
+            self.cancel(error)
+        }))
+        alert.popoverPresentationController?.sourceView = view
+        alert.popoverPresentationController?.sourceRect = view.frame
+        dispatch_main_safe {
+            self.present(alert, animated: true, completion: nil)
+        }
+    }
+}