//
//  KMLightMemberManager.swift
//  PDF Reader Pro
//
//  Created by lizhe on 2023/2/22.
//

import Cocoa

let USER_LOGINSTATE_NOTIFICATION = "kUserLoginStateNotification" //用户登录状态改变通知
let USER_INFO_CHANGE_NOTIFICATION = "kUserInfoChangeNotification" //用户信息改变通知
let ADVANCED_NOTIFICATION = "kAdvancedContentViewShowNotification" //用户高级引导显示

@objc enum KMLightMemberUserState: Int, CaseIterable {
    case unknown = 0//,"unknown"
    case login = 1//"login" //登录
    case logOut = 2//"logOut" //登出
    case cancellation = 3//"cancellation" //注销
}

@objcMembers class KMLightMemberManager: NSObject {
    static let manager = KMLightMemberManager()

    var config: KMLightMemberConfig = KMLightMemberConfig()
    var info: KMLightMemberUserInfo = KMLightMemberUserInfo()
    var token: KMLightMemberToken = KMLightMemberToken()
    
    var userState: KMLightMemberUserState = .unknown //用户状态
    var purchaseState: KMPurchaseManagerState { //订阅状态
        get {
            return KMPurchaseManager.manager.state
        }
    }
     
    /**
     是否显示高级功能视图
     */
    var canShowAdvancedView: Bool = true {
        didSet {
            NotificationCenter.default.post(name: NSNotification.Name(rawValue: ADVANCED_NOTIFICATION), object: nil)
        }
    }

    override init() {
        super.init()
        self.reloadUserInfo()
    }
    
    func logOut() {
        DispatchQueue.main.async {
            self.userState = .logOut
            KMLightMemberCache.cache.clean()
            self.reloadUserInfo()
            NotificationCenter.default.post(name: NSNotification.Name(rawValue: USER_LOGINSTATE_NOTIFICATION), object: nil, userInfo: nil)
        }
    }
    
    func logIn() {
        self.userState = .login
        self.reloadUserInfo()
        NotificationCenter.default.post(name: NSNotification.Name(rawValue: USER_LOGINSTATE_NOTIFICATION), object: nil, userInfo: nil)
    }
    
    func cancellation() {
        self.userState = .cancellation
        self.reloadUserInfo()
        NotificationCenter.default.post(name: NSNotification.Name(rawValue: USER_LOGINSTATE_NOTIFICATION), object: nil, userInfo: nil)
    }
}

//MARK: - 数据
extension KMLightMemberManager {
    /**
     刷新本地用户数据
     */
    func reloadUserInfo() {
        //获取用户信息
        let userInfo = KMLightMemberCache.cache.readData(type: .info)
        if userInfo.count != 0 {
            KMLightMemberUserInfo.parseData(data: userInfo, needSave: false) { [unowned self] data in
                self.info = data
            }
        } else {
            self.info = KMLightMemberUserInfo()
        }
        
        let token = KMLightMemberCache.cache.readData(type: .token)
        if token.count != 0 {
            KMLightMemberToken.parseData(data: token) { [unowned self] data in
                self.token = data
            }
        } else {
            self.token = KMLightMemberToken()
        }
        NotificationCenter.default.post(name: NSNotification.Name(rawValue: USER_INFO_CHANGE_NOTIFICATION), object: nil, userInfo: nil)
    }
    
    /**
     刷新本地用户数据
     */
    func updateNetworkingUserInfo(completion: @escaping (_ isDidLogout: Bool) -> Void) {
        KMRequestServerManager.manager.getUserInfo { [unowned self] success, data, error, isLocal in
            if success {
                self.reloadUserInfo()
                completion(false)
            } else {
                if error?.code == 304 {
                    KMLightMemberManager.manager.logOut()
                    completion(true)
                }
                completion(false)
            }
        }
    }
    
    /**
     token是否生效
     */
    func isTokenValid() async -> Bool {
        var result = false
        
        if self.isLogin() {
            do {
                let (success, error) = try await KMRequestServerManager.manager.getUserInfo2()
//                Thread.sleep(forTimeInterval: 20.0)
                if success {
                    result = true
                } else {
                    if error.code == 304 {
                        KMLightMemberManager.manager.logOut()
                        result = false
                    } else {
                        result = true
                    }
                }
                return result
            } catch {
                return result
            }
        }
        return result
    }
}

//MARK: - 快捷方法
extension KMLightMemberManager {
    //是否已经登录
    func isLogin() -> Bool {
        var result: Bool = false
        if token.access_token != "" {
            result = true
        }
        return result
    }
    
    //是否已经注销
    func isLogOff() -> Bool {
        var result: Bool = false
        return result
    }
    
    //是否能使用高级功能
    func canUseAdvanced(needNetworking: Bool = false) async -> Bool {
        var result: Bool = false
        
        var tokenValid = true
        if needNetworking {
            tokenValid = await self.isTokenValid()
        }
        KMPrint(tokenValid)
        if tokenValid && info.isInFreeUseTime || (self.purchaseState == .subscription || self.purchaseState == .trial) {
            result = true
        }
        return result
    }
    
//    //是否能使用付费功能
//    func canPayFunction(needNetworking: Bool = false) async -> Bool {
//        var result: Bool = false
//        //先确认可以使用高级功能，再确认是否已经订阅
//        if await self.canUseAdvanced(needNetworking: needNetworking) && (self.purchaseState == .subscription || self.purchaseState == .trial) {
//            result = true
//        }
//        return result
//    }
    
    //是否能使用付费功能
    func canPayFunction() -> Bool {
        var result: Bool = false
        //先确认可以使用高级功能，再确认是否已经订阅
        if (self.purchaseState == .subscription || self.purchaseState == .trial) {
            result = true
        }
        return result
    }
    
    //是否显示订单信息
    func existOrderInfo() -> Bool {
        return self.info.existOrderInfo ?? false
    }
}

//MARK: 登录注册界面弹出逻辑
/*
 弹出策略：
 每日首次进入阅读页，自动弹出【注册弹窗】；关闭弹窗后，当日不再弹出，次日零点重置
 注意：首次进入阅读页之前，通过其他方式弹出过【注册弹窗】，则进入阅读页不再主动弹出
 **/
extension KMLightMemberManager {
    //检查是否需要弹起注册登录框
    func checkPopupRegister() -> Bool {
        var needPop = false
        self.resetRegisterPopupStatus()
        
        var info: [String : Any] = [:]
        if (UserDefaults.standard.value(forKey: "CheckPopupRegistration") == nil) {
            
        } else {
            info = (UserDefaults.standard.value(forKey: "CheckPopupRegistration") as! [String : Any])
        }
        
        let isPopupShownToday = info["isPopupShownToday"] as? Bool ?? false
        var lastPopupDate = info["lastPopupDate"] as? Date
        
        // 检查是否已经弹出过注册弹窗
        if (!isPopupShownToday) {
            // 获取当前日期
            let currentDate = Date()

            // 检查上次弹窗显示的日期是否为空，或者不是当天
            if lastPopupDate == nil || (lastPopupDate != nil &&
                                        !Calendar.current.isDate(lastPopupDate!, inSameDayAs: currentDate)) {
                // 更新上次弹窗显示的日期为当前日期
                lastPopupDate = currentDate
                info.updateValue(lastPopupDate!, forKey: "lastPopupDate")
                info.updateValue(true, forKey: "isPopupShownToday")
                UserDefaults.standard.set(info, forKey: "CheckPopupRegistration")
                UserDefaults.standard.synchronize()
                needPop = true
            }
        }
        return needPop
    }
    
    func updatePopupShownToday(isPop: Bool) {
        var info: [String : Any] = [:]
        if (UserDefaults.standard.value(forKey: "CheckPopupRegistration") == nil) {
            
        } else {
            info = (UserDefaults.standard.value(forKey: "CheckPopupRegistration") as! [String : Any])
        }
        info.updateValue(isPop, forKey: "isPopupShownToday")
        UserDefaults.standard.set(info, forKey: "CheckPopupRegistration")
        UserDefaults.standard.synchronize()
    }
    
    func resetRegisterPopupStatus() {
        var info: [String : Any] = [:]
        if (UserDefaults.standard.value(forKey: "CheckPopupRegistration") == nil) {
            
        } else {
            info = (UserDefaults.standard.value(forKey: "CheckPopupRegistration") as! [String : Any])
        }
        
        var isPopupShownToday = info["isPopupShownToday"]
        let lastPopupDate = info["lastPopupDate"] as? Date
        
        // 获取当前日期和时间
        let currentDate = Date()
        // 获取当前日历
        let calendar = Calendar.current
        // 获取当天的午夜时间
        let midnight = calendar.startOfDay(for: currentDate)
        // 检查上次弹窗显示的日期是否早于当天的午夜时间
        if let lastPopupDate = lastPopupDate, lastPopupDate < midnight {
            // 重置弹窗状态
            isPopupShownToday = false
            
            info.updateValue(isPopupShownToday!, forKey: "isPopupShownToday")
//            info.updateValue(NSDate(), forKey: "lastPopupDate")
            UserDefaults.standard.set(info, forKey: "CheckPopupRegistration")
            UserDefaults.standard.synchronize()
        }
    }
}