AiKeyboard2025/ios/Runner/FlutterMethodChannelManager.swift

//
//  FlutterMethodChannelManager.swift
//  Runner
//
//  Created by Destiny on 2025/5/8.
//

import Flutter
import UIKit
import StoreKit

class FlutterMethodChannelManager: NSObject {
    
    // 单例模式
    static let shared = FlutterMethodChannelManager()
    
    // 方法通道
    var keyboardChannel: FlutterMethodChannel?
    
    // 私有初始化方法
    private override init() {
        super.init()
    }

    // 设置方法通道
    func setupMethodChannels(controller: FlutterViewController) {
        // 创建键盘相关的方法通道
        keyboardChannel = FlutterMethodChannel(
            name: "keyboard_ios",
            binaryMessenger: controller.binaryMessenger)
        
        // 设置方法调用处理器
        keyboardChannel?.setMethodCallHandler { [weak self] (call, result) in
            guard let self = self else { return }
            
            switch call.method {
            case "saveAuthToken":
                if let args = call.arguments as? [String: Any],
                   let token = args["token"] as? String {
                    KeyboardSharedDataManager.shared.saveToken(token)
                    result(true)
                } else {
                    result(FlutterError(code: "INVALID_ARGUMENTS", message: "无效的参数", details: nil))
                }
            case "clearAuthToken":
                KeyboardSharedDataManager.shared.clearAuthToken()
                result(true)
            case "saveIDFV":
                if let args = call.arguments as? [String: Any],
                   let idfv = args["idfv"] as? String {
                    KeyboardSharedDataManager.shared.saveInitIDFV(idfv)
                    result(true)
                } else {
                    result(FlutterError(code: "INVALID_ARGUMENTS", message: "无效的参数", details: nil))
                }
            case "saveIDFA":
                if let args = call.arguments as? [String: Any],
                   let idfa = args["idfa"] as? String {
                    KeyboardSharedDataManager.shared.saveInitIDFA(idfa)
                    result(true)
                } else {
                    result(FlutterError(code: "INVALID_ARGUMENTS", message: "无效的参数", details: nil))
                }
            case "isKeyboardAdded":
                let isAdd = self.isKeyboardEnabled()
                result(isAdd)
            case "isDefaultKeyboard":
                let isDefault = self.isCustomKeybroad()
                result(isDefault)
            case "openKeyboardGuide":
                KeyboardSharedDataManager.shared.saveIsShowGuide()
                result(true)
            case "isHasDiscount":
                if let args = call.arguments as? [String: Any],
                   let appleGoodId = args["appleGoodId"] as? String {
                    self.checkProductDiscount(appleGoodId: appleGoodId, completion: { hasDiscount in
                        result(hasDiscount)
                    })
                } else {
                    result(FlutterError(code: "INVALID_ARGUMENTS", message: "无效的参数", details: nil))
                }
            default:
                result(FlutterMethodNotImplemented)
            }
        }
    }
    
    // 是否添加键盘
    func isKeyboardEnabled() -> Bool {
        
        // 获取系统中已安装的键盘列表
        let keyboards = UserDefaults.standard.dictionaryRepresentation()
            .filter { $0.key.contains("Keyboard") }
        if let keyboardList = keyboards["AppleKeyboards"] as? [String] {
            
            let keyboardBundleId = "com.qihuan.zhuiaijianpan.AiKeyboard"
            let isAdded = keyboardList.contains(keyboardBundleId)
            return isAdded
        }
        return false
    }
    
    // 是否为默认键盘
    func isCustomKeybroad() -> Bool {
        
        let currentKeyboardName = (((UITextInputMode.activeInputModes as NSArray).filtered(using: NSPredicate(format: "isDisplayed = YES"))).last as? NSObject)?.value(forKey: "extendedDisplayName") as? String
        
        let infoDictionary = Bundle.main.infoDictionary!
        let appDisplayName = infoDictionary["CFBundleDisplayName"] as? String
        
        return currentKeyboardName == appDisplayName
    }
    
}

extension FlutterMethodChannelManager {
    
    private func checkProductDiscount(appleGoodId: String, completion: @escaping (Bool) -> Void) {
        
        if #available(iOS 15.0, *) {
            Task {
                do {
//                    print("开始请求产品信息 (StoreKit 2)")
                    let products = try await Product.products(for: [appleGoodId])
                    print("成功获取产品信息: \(products.count) 个产品")
                    if let product = products.first {
                        // 检查是否有优惠
                        var hasDiscount = await product.subscription?.isEligibleForIntroOffer ?? false
                        
                        DispatchQueue.main.async {
                            completion(hasDiscount)
                        }
                    } else {
                        print("未找到产品")
                        DispatchQueue.main.async {
                            completion(false)
                        }
                    }
                } catch {
                    print("获取产品失败 (StoreKit 2): \(error)")
                    DispatchQueue.main.async {
                        completion(false)
                    }
                }
            }
        }
        
//        // 使用StoreKit查询商品信息
//        let request = SKProductsRequest(productIdentifiers: [appleGoodId])
//        request.delegate = ProductRequestDelegate(completion: { product in
//            if let product = product {
//                // iOS 12.2及以上版本支持促销优惠
//                if #available(iOS 12.2, *) {
//                    // 检查商品是否有促销优惠
//                    let hasDiscount = product.discounts.count > 0
//                    completion(hasDiscount)
//                } else {
//                    completion(false)
//                }
//            } else {
//                completion(false)
//            }
//        })
//        request.start()
    }
}

// 处理StoreKit产品请求的代理
class ProductRequestDelegate: NSObject, SKProductsRequestDelegate {
    
    private let completion: (SKProduct?) -> Void

    init(completion: @escaping (SKProduct?) -> Void) {
        self.completion = completion
        super.init()
    }

    func productsRequest(_ request: SKProductsRequest, didReceive response: SKProductsResponse) {
        if let product = response.products.first {
            completion(product)
        } else {
            completion(nil)
        }
    }

    func request(_ request: SKRequest, didFailWithError error: Error) {
        print("商品请求失败: \(error.localizedDescription)")
        completion(nil)
    }
}