UI & Data persistence for Send Special Keys menu

Limelight/Input/KeyManager.swift

@@ -0,0 +1,126 @@
+//
+//  KeyManager.swift
+//  Moonlight-ZWM
+//
+//  Created by ZWM on 2024/7/23.
+//  Copyright © 2024 Moonlight Game Streaming Project. All rights reserved.
+//
+
+import Foundation
+import UIKit
+
+@objc public class KeyManager: NSObject {
+    @objc public static let shared = KeyManager()
+
+    private var strings: [String] = []
+    private let keyMappings: [String: UInt16] = [
+        "CTRL": 0x11,
+        "ALT": 0x12,
+        "DEL": 0x2E,
+        "F1": 0x70,
+        "F2": 0x71
+    ]
+    
+    private weak var viewController: KeyManagerViewController?
+    
+    private override init() {
+        super.init()
+        loadStrings()
+    }
+    
+    @objc public func createTestKeyMappings() -> [String: UInt16] {
+        return keyMappings
+    }
+    
+    @objc public func extractKeyStrings(from input: String) -> [String]? {
+        let keys = keyMappings.keys.joined(separator: "|")
+        let pattern = "^((?:\(keys))(?:\\+\(keys))*)$"
+        
+        guard let regex = try? NSRegularExpression(pattern: pattern, options: []) else {
+            return nil
+        }
+        
+        let range = NSRange(location: 0, length: input.utf16.count)
+        guard let match = regex.firstMatch(in: input, options: [], range: range) else {
+            return nil
+        }
+        
+        let matchedString = (input as NSString).substring(with: match.range(at: 1))
+        let keyStrings = matchedString.split(separator: "+").map { String($0) }
+        return keyStrings
+    }
+    
+    @objc public func addString(_ string: String) {
+        /* guard isValidString(string) else {
+            return
+        } */
+        strings.append(string)
+        saveStrings()
+        viewController?.reloadTableView()
+    }
+    
+    @objc public func deleteString(at index: Int) {
+        guard index >= 0 && index < strings.count else {
+            return
+        }
+        strings.remove(at: index)
+        saveStrings()
+        viewController?.reloadTableView()
+    }
+    
+    @objc public func getAllStrings() -> [String] {
+        return strings
+    }
+    
+    private func isValidString(_ string: String) -> Bool {
+        let keys = keyMappings.keys.joined(separator: "|")
+        let pattern = "^((?:\(keys))(?:\\+\(keys))*)$"
+        
+        guard let regex = try? NSRegularExpression(pattern: pattern, options: []) else {
+            return false
+        }
+        
+        let range = NSRange(location: 0, length: string.utf16.count)
+        return regex.firstMatch(in: string, options: [], range: range) != nil
+    }
+    
+    private func loadStrings() {
+        if let savedStrings = UserDefaults.standard.array(forKey: "savedStrings") as? [String] {
+            strings = savedStrings
+        }
+    }
+    
+    private func saveStrings() {
+        UserDefaults.standard.set(strings, forKey: "savedStrings")
+    }
+    
+    @objc public func setupViewController(_ viewController: KeyManagerViewController) {
+        self.viewController = viewController
+        let addButton = UIBarButtonItem(barButtonSystemItem: .add, target: self, action: #selector(promptForNewString))
+        viewController.navigationItem.rightBarButtonItem = addButton
+        viewController.navigationItem.title = "Manage Strings"
+        
+        
+        viewController.tableView.delegate = viewController
+        viewController.tableView.dataSource = viewController
+        //viewController.tableView.backgroundColor = UIColor.black.withAlphaComponent(0.5)
+
+    }
+    
+    @objc private func promptForNewString() {
+        guard let topController = UIApplication.shared.keyWindow?.rootViewController else {
+            return
+        }
+        
+        let alert = UIAlertController(title: "New String", message: "Enter a new string", preferredStyle: .alert)
+        alert.addTextField()
+        
+        let submitAction = UIAlertAction(title: "Add", style: .default) { [unowned alert] _ in
+            let newString = alert.textFields![0].text ?? ""
+            self.addString(newString)
+        }
+        
+        alert.addAction(submitAction)
+        topController.present(alert, animated: true)
+    }
+}