Underlying VPN Logic

ios/Shared/FilePath.swift

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+//
+//  FilePath.swift
+//  SingBoxPacketTunnel
+//
+//  Created by GFWFighter on 7/25/1402 AP.
+//
+
+import Foundation
+
+public enum FilePath {
+    public static let packageName = {
+        Bundle.main.infoDictionary?["BASE_BUNDLE_IDENTIFIER"] as? String ?? "unknown"
+    }()
+}
+
+public extension FilePath {
+    static let groupName = "group.\(packageName)"
+
+    private static let defaultSharedDirectory: URL! = FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: FilePath.groupName)
+
+    static let sharedDirectory = defaultSharedDirectory!
+
+    static let cacheDirectory = sharedDirectory
+        .appendingPathComponent("Library", isDirectory: true)
+        .appendingPathComponent("Caches", isDirectory: true)
+    
+    static let assetsDirectory = cacheDirectory.appendingPathComponent("Assets", isDirectory: true)
+
+    static let workingDirectory = cacheDirectory.appendingPathComponent("Working", isDirectory: true)
+}
+
+public extension URL {
+    var fileName: String {
+        var path = relativePath
+        if let index = path.lastIndex(of: "/") {
+            path = String(path[path.index(index, offsetBy: 1)...])
+        }
+        return path
+    }
+}