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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
import UIKit
private let internalSchemes: Set<String> = ["http", "https", "ftp", "file", "about", "javascript", "data"]
class RequestHandler {
func handle(request: URLRequest, alertCallback: (UIAlertController) -> Void) -> Bool {
guard let url = request.url,
let scheme = request.url?.scheme?.lowercased() else {
return false
}
// If the URL isn't a scheme the browser can open, let the system handle it if
// it's a scheme we want to support.
guard internalSchemes.contains(scheme) else {
guard let components = URLComponents(url: url, resolvingAgainstBaseURL: false) else {
return false
}
let title = components.path
switch scheme {
case "tel":
// Don't present our dialog as the system presents its own
UIApplication.shared.open(url, options: [:])
case "facetime", "facetime-audio":
let alert = RequestHandler.makeAlert(title: title, action: "FaceTime", forURL: url)
alertCallback(alert)
case "mailto":
let alert = RequestHandler.makeAlert(title: title, action: UIConstants.strings.externalLinkEmail, forURL: url)
alertCallback(alert)
default:
let openAction = UIAlertAction(title: UIConstants.strings.open, style: .default) { _ in
UIApplication.shared.open(url, options: [:])
}
let cancelAction = UIAlertAction(title: UIConstants.strings.externalLinkCancel, style: .cancel) { _ in
}
let alert = UIAlertController(title: String(format: UIConstants.strings.externalAppLink, AppInfo.productName),
message: nil,
preferredStyle: .alert)
alert.addAction(cancelAction)
alert.addAction(openAction)
alert.preferredAction = openAction
alertCallback(alert)
}
return false
}
guard scheme == "http" || scheme == "https",
let host = url.host?.lowercased() else {
return true
}
switch host {
case "maps.apple.com":
let alert = RequestHandler.makeAlert(title: String(format: UIConstants.strings.externalAppLinkWithAppName, AppInfo.productName, "Maps"), action: UIConstants.strings.open, forURL: url)
alertCallback(alert)
return false
case "itunes.apple.com":
let alert = RequestHandler.makeAlert(title: String(format: UIConstants.strings.externalAppLinkWithAppName, AppInfo.productName, "App Store"), action: UIConstants.strings.open, forURL: url)
alertCallback(alert)
return false
default:
return true
}
}
private static func makeAlert(title: String, action: String, forURL url: URL) -> UIAlertController {
let openAction = UIAlertAction(title: action, style: .default) { _ in
UIApplication.shared.open(url, options: [:])
}
let alert = UIAlertController(title: title, message: nil, preferredStyle: .alert)
alert.addAction(UIAlertAction(title: UIConstants.strings.externalLinkCancel, style: .cancel, handler: nil))
alert.addAction(openAction)
alert.preferredAction = openAction
return alert
}
}