[WIP] Adding support for beatsaver:// links

BeatmapAR/AppDelegate.swift

@@ -4,6 +4,7 @@ import UIKit
 class AppDelegate: UIResponder, UIApplicationDelegate {
 
     var window: UIWindow?
+    let backgroundDownloadQueue = DispatchQueue(label: "DownloadQueue", qos: .background)
 
     func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
         let window = UIWindow(frame: UIScreen.main.bounds)
@@ -18,20 +19,36 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
         open url: URL,
         options: [UIApplication.OpenURLOptionsKey: Any] = [:]
     ) -> Bool {
-
         let manager = FileManager.default
-        guard url.isFileURL,
-            let documentsURL = manager.urls(for: .documentDirectory, in: .userDomainMask).first
-        else {
+        guard let documentsURL = manager.urls(for: .documentDirectory, in: .userDomainMask).first else {
             return false
         }
 
-        try? manager.moveItem(
-            at: url,
-            to: documentsURL.appendingPathComponent(url.lastPathComponent)
-        )
+        if url.scheme == "beatsaver",
+            let beatSaverId = url.host,
+            let downloadURL = URL(string: "https://beatsaver.com/api/download/key/\(beatSaverId)") {
 
-        return true
+            // FIXME: Display a download screen instead...
+            backgroundDownloadQueue.async {
+                if let beatmapData = try? Data(contentsOf: downloadURL) {
+                    try? beatmapData.write(
+                        to: documentsURL.appendingPathComponent("\(beatSaverId).zip"),
+                        options: .atomicWrite
+                    )
+                }
+            }
+
+            return true
+        } else if url.isFileURL {
+            try? manager.moveItem(
+                at: url,
+                to: documentsURL.appendingPathComponent(url.lastPathComponent)
+            )
+
+            return true
+        } else {
+            return false
+        }
     }
 
     func applicationWillResignActive(_ application: UIApplication) {

project.yml

@@ -56,6 +56,11 @@ targets:
            UTTypeTagSpecification:
              public.filename-extension: zip
              public.mime-type: application/zip
+        CFBundleURLTypes:
+          - CFBundleTypeRole: Editor
+            CFBundleURLName: beatsaver
+            CFBundleURLSchemes:
+              - beatsaver
     sources:
       - path: README.md
         buildPhase: none