import Cocoa
import SystemConfiguration

enum KMAdsState: Int {
    case none = 0
    case initialize
    case requestOk
    case requestFail
    case show
    case finish
}

//最后加载完广告的日期
let kLastLoadingDate = "LastLoadingDate"
//今天加载的频次
let kTodayLoadingNumber = "TodayLoadingNumber"

//评价后最后加载完广告的日期
let kLastLoadingDateAfter = "LastLoadingDateAfter"
//评价后今天加载的频次
let kTodayLoadingNumberAfter = "TodayLoadingNumberAfter"

let kADViewWithTag = 1000

class KMAdsManager: NSObject {
    private var adViews: [KMAdsWebView] = []
    private var isEnableShowAds: Bool = true
    private var appFreeTimeAdsCount: Int = 0
    private var adsState: KMAdsState = .none
    private var appFreeAfterTimeAdsCount: Int = 0

    static let defaultManager = KMAdsManager()

    private override init() {
        super.init()
        adViews = []
        isEnableShowAds = true
        appFreeTimeAdsCount = UserDefaults.standard.integer(forKey: "KMEvaluateBeforeCloseAdsNumbersKey")
        appFreeAfterTimeAdsCount = UserDefaults.standard.integer(forKey: "KMEvaluateAfterCloseAdsNumbersKey")
        adsState = .none
    }

    func beginSheetModal(for view: NSView, directions: KMADViewDirections, animated: Bool, completionHandler handler: @escaping (Int) -> Void) -> Bool {
        return beginSheetModalForView(view, directions: directions, adPosY: 30.0, animated: animated, completionHandler: handler)
    }

    func beginSheetModalForView(_ view: NSView, directions: KMADViewDirections, adPosY posY: CGFloat, animated: Bool, completionHandler handler: @escaping (Int) -> Void) -> Bool {
        
        if let adView = self.adView(at: view) {
            adView.removeFromSuperview()
            adView.adPosY = posY
            view.addSubview(adView)
            
            if adView.adsInfo == nil {
                self.refreshDataInfo(with: adView)
            } else {
                adView.reloadData()
            }
            return false
        }
        
        if !isValidLastShowAds() {
            return false
        }
        
        if !checkTheDate() {
            return false
        }
        
        if !checkNetworkAvailable() {
            return false
        }
        
        switch adsState {
        case .none, .finish:
            adsState = .show
        default:
            break
        }
        
        let adView = KMAdsWebView()
        adView.adPosY = posY
        adView.sortAdsData()
        adView.adDelegate = self
//        adView.tag = kADViewWithTag
        adView.beginSheetModalForView(view: view, directions: directions, animated: animated, completionHandler: handler)
        adViews.append(adView)
        
        self.refreshDataInfo(with: adView)
        
        return true
    }
    
    func refreshDataInfo(with adView: KMAdsWebView) {
        if KMAdsInfoManager.shareInstance.adsInfoArrM != nil {
            if KMAdsInfoManager.shareInstance.adsInfoArrM.count > 0 {
                let adsInfo = KMAdsInfoManager.shareInstance.getRandomAdsInfo()
                if adsInfo?.show == true {
                    adView.adsInfo = adsInfo
                    adView.reloadData()
                } else {
                    adView.isHidden = true
                }
            } else {
                adView.isHidden = true
            }
        }
    }

    func adView(at view: NSView) -> KMAdsWebView? {
        guard let adView = adViews.first else {
            return nil
        }
//        guard let adView = view.viewWithTag(kADViewWithTag) as? KMAdsWebView else {
//            return nil
//        }
        return adView
    }

    func dismissSheetModal(for view: NSView) {
        if let adView = adViews.first {
            adViews.removeAll { $0 == adView }
            adView.stopLoading()
            adView.removeFromSuperview()
        }
//        if let adView = view.viewWithTag(kADViewWithTag) as? KMAdsWebView {
//            adViews.removeAll { $0 == adView }
//            adView.removeFromSuperview()
//        }

        adsState = .finish
    }

    func showFreeTimeAdsInfo() {
        print("KMPurchaseCompareWindowController")
    }

    func checkNetworkAvailable() -> Bool {
        guard let reachability = SCNetworkReachabilityCreateWithName(nil, "www.apple.com") else {
            return false
        }

        var flags: SCNetworkReachabilityFlags = SCNetworkReachabilityFlags(rawValue: 0)
        if SCNetworkReachabilityGetFlags(reachability, &flags) {
            let isDataSourceAvailable = flags.contains(.reachable) && !flags.contains(.connectionRequired)
            return isDataSourceAvailable
        }

        return false
    }

    func refreshLoadingDate() {
        var todayLoadingNumber = 0

        if !UserDefaults.standard.bool(forKey: "kUserHaveClickRateUsKey") {
            todayLoadingNumber = UserDefaults.standard.integer(forKey: kTodayLoadingNumber)
            todayLoadingNumber += 1
            UserDefaults.standard.set(todayLoadingNumber, forKey: kTodayLoadingNumber)
            let date = Date()
            let formatter = DateFormatter()
            formatter.dateFormat = "yyyy-MM-dd"
            let str = formatter.string(from: date)
            UserDefaults.standard.set(str, forKey: kLastLoadingDate)
        } else {
            todayLoadingNumber = UserDefaults.standard.integer(forKey: kTodayLoadingNumberAfter)
            todayLoadingNumber += 1
            UserDefaults.standard.set(todayLoadingNumber, forKey: kTodayLoadingNumberAfter)
            let date = Date()
            let formatter = DateFormatter()
            formatter.dateFormat = "yyyy-MM-dd"
            let str = formatter.string(from: date)
            UserDefaults.standard.set(str, forKey: kLastLoadingDateAfter)
        }
    }

    func checkTheDate() -> Bool {
        if !UserDefaults.standard.bool(forKey: "kUserHaveClickRateUsKey") {
            let dateToday = Date()
            let formatter = DateFormatter()
            formatter.dateFormat = "yyyy-MM-dd"
            let str = formatter.string(from: dateToday)
            let string = UserDefaults.standard.string(forKey: kLastLoadingDate) ?? "1990-01-01"
            let dateFormatter = DateFormatter()
            dateFormatter.dateFormat = "yyyy-MM-dd"
            guard let lastDate = dateFormatter.date(from: string) else {
                return false
            }

            let isToday = Calendar.current.isDateInToday(lastDate)
            if !isToday {
                UserDefaults.standard.set(0, forKey: kTodayLoadingNumber)
                return true
            } else {
                var todayLoadingNumber = 0
                if UserDefaults.standard.integer(forKey: kTodayLoadingNumber) != 0 {
                    todayLoadingNumber = UserDefaults.standard.integer(forKey: kTodayLoadingNumber)
                }
                if todayLoadingNumber >= KMKdanRemoteConfig.remoteConfig.refreshAdsRate() {
                    return false
                }
            }
        } else {
            let dateToday = Date()
            let formatter = DateFormatter()
            formatter.dateFormat = "yyyy-MM-dd"
            let str = formatter.string(from: dateToday)
            let string = UserDefaults.standard.string(forKey: kLastLoadingDateAfter) ?? str
            let dateFormatter = DateFormatter()
            dateFormatter.dateFormat = "yyyy-MM-dd"
            guard let lastDate = dateFormatter.date(from: string) else {
                return false
            }

            let isToday = Calendar.current.isDateInToday(lastDate)
            if !isToday {
                UserDefaults.standard.set(0, forKey: kTodayLoadingNumberAfter)
                return true
            } else {
                var todayLoadingNumber = 0
                if UserDefaults.standard.integer(forKey: kTodayLoadingNumberAfter) != 0 {
                    todayLoadingNumber = UserDefaults.standard.integer(forKey: kTodayLoadingNumberAfter)
                }
                if todayLoadingNumber >= KMKdanRemoteConfig.remoteConfig.refreshAdsRateEvaluateAfter() {
                    return false
                }
            }
        }
        return true
    }

    func updateShowAdsDate() {
        let defaults = UserDefaults.standard

        let format = DateFormatter()
        format.dateFormat = "yyyy-MM-dd HH:mm:ss ZZZ"
        let currentDate = Date()
        let strCurDate = format.string(from: currentDate)

        defaults.setValue(strCurDate, forKey: "km_app_show_ads_date")
        defaults.synchronize()
    }

    func isValidLastShowAds() -> Bool {
        let defaults = UserDefaults.standard
        var tAdsFlag = false

        if let startStr = defaults.string(forKey: "km_app_show_ads_date") {
            let format = DateFormatter()
            format.dateFormat = "yyyy-MM-dd HH:mm:ss ZZZ"

            guard let startD = format.date(from: startStr) else {
                return false
            }

            var closeDate = 0

            if !UserDefaults.standard.bool(forKey: "kUserHaveClickRateUsKey") {
                closeDate = KMKdanRemoteConfig.remoteConfig.closeIntervalDate()
            } else {
                closeDate = KMKdanRemoteConfig.remoteConfig.closeIntervalDateEvaluateAfter()
            }

            let tCurDate = Date(timeIntervalSinceNow: TimeInterval(-closeDate))

            let result = tCurDate.compare(startD)
            if result == .orderedDescending {
                tAdsFlag = true
            }
        } else {
            if !UserDefaults.standard.bool(forKey: "kUserHaveClickRateUsKey") {
                tAdsFlag = KMKdanRemoteConfig.remoteConfig.isDisplayAds()
            } else {
                tAdsFlag = KMKdanRemoteConfig.remoteConfig.isDisplayAdsEvaluateAfter()
            }
        }

        return tAdsFlag
    }
}

extension KMAdsManager: AdsWebViewDelegate {
    // MARK: - KMADViewDelegate
    func kmAdViewClose(_ tView: KMAdsWebView) {
        for view in self.adViews {
            view.stopLoading()
            view.removeFromSuperview()
        }
        self.adViews.removeAll()

        self.adsState = .finish
        self.updateShowAdsDate()

        if !UserDefaults.standard.bool(forKey: "kUserHaveClickRateUsKey") {
            self.appFreeTimeAdsCount = (self.appFreeTimeAdsCount + 1) % KMKdanRemoteConfig.remoteConfig.appEvaluateBeforeAdsCount()
            UserDefaults.standard.set(self.appFreeTimeAdsCount, forKey: "KMEvaluateBeforeCloseAdsNumbersKey")
            if 0 == (self.appFreeTimeAdsCount % KMKdanRemoteConfig.remoteConfig.appEvaluateBeforeAdsCount()) {
                self.showFreeTimeAdsInfo()
            }
        } else {
            self.appFreeAfterTimeAdsCount = (self.appFreeAfterTimeAdsCount + 1) % KMKdanRemoteConfig.remoteConfig.appEvaluateAfterAdsCount()
            UserDefaults.standard.set(self.appFreeAfterTimeAdsCount, forKey: "KMEvaluateAfterCloseAdsNumbersKey")
            if 0 == (self.appFreeAfterTimeAdsCount % KMKdanRemoteConfig.remoteConfig.appEvaluateAfterAdsCount()) {
                self.showFreeTimeAdsInfo()
            }
        }
    }

    func kmAdViewClicked(_ tView: KMAdsWebView) {
        for view in self.adViews {
            view.stopLoading()
            view.removeFromSuperview()
        }
        self.adViews.removeAll()

        self.adsState = .finish
        self.updateShowAdsDate()
    }
}