//
//  KMWinBackWindowController.swift
//  PDF Reader Pro
//
//  Created by User-Tangchao on 2025/1/13.
//

import Cocoa
import StoreKit
import SwiftUI

//class KMWinBackModel: NSObject {
//    var originalPrice: Double = 0
//    
//}

@objcMembers class KMIAPTransaction: NSObject {
    var transactionIdentifier: String?
    var productIdentifier: String?
    
    override init() {
        super.init()
        self.transactionIdentifier = ""
        self.productIdentifier = ""
    }
}

let KMWinBackIAPProductPurchasedNotificationName = "KMWinBackIAPProductPurchasedNotification"

class KMWinBackWindowController: KMBaseWindowController {
    static let shared = KMWinBackWindowController(windowNibName: "KMWinBackWindowController")
    
    @IBOutlet weak var contentBox: NSBox!
    @IBOutlet weak var backgroundIv: NSImageView!
    @IBOutlet weak var iconIv: NSImageView!
    @IBOutlet weak var titleLabel: NSTextField!
    @IBOutlet weak var subTitleLabel: NSTextField!
    @IBOutlet weak var despBox: NSBox!
    @IBOutlet weak var buttonBox: NSBox!
    
    private lazy var despView_: KMWinBackDespView = {
        let view = KMWinBackDespView()
        return view
    }()
    
    private lazy var buttonView_: KMWinBackButtonView = {
        let view = KMWinBackButtonView()
        return view
    }()
    
    private let showCountKey_ =                     "WinBackWindowShowCount"
    private let lastShowTimeKey_ =                  "WinBackWindowLastShowTime"
    
    private var origialPrice_: String = ""
    
    private var offerId_: String?
    private var displayPriceString_: String = ""
    
    override func windowDidLoad() {
        super.windowDidLoad()
        
        window?.standardWindowButton(.zoomButton)?.isHidden = true
        window?.standardWindowButton(.miniaturizeButton)?.isHidden = true
        window?.delegate = self
        
        despBox.borderWidth = 0
        despBox.cornerRadius = 4
        despBox.contentView = despView_
        buttonBox.borderWidth = 0
        buttonBox.cornerRadius = 4
        buttonBox.contentView = buttonView_

        backgroundIv.image = NSImage(named: "KMImageNameWinBackBg")
        backgroundIv.image?.size = window?.frame.size ?? NSMakeSize(520, 540)
        iconIv.image = NSImage(named: "KMImageNameWinBackIcon")
        
        titleLabel.stringValue = NSLocalizedString("PDF Reader Pro", comment: "")
        titleLabel.font = .SFProTextRegularFont(20)
        
        despView_.titleLabel.stringValue = NSLocalizedString("PDF Reader Pro Advanced\n - 6 Months Plan", comment: "")
        despView_.tipLabel.stringValue = NSLocalizedString("Because you were previously subscribed to PDF Reader Pro, we are now delivering a special offer to you. ", comment: "")
        despView_.iconIv.image = NSImage(named: "KMImageNameWinBackDespIcon")
        
        buttonView_.backgroundView.xRadius = 4
        buttonView_.backgroundView.yRadius = 4

        buttonView_.button.font = .SFProTextRegularFont(16)
        buttonView_.itemClick = { [weak self] idx, _ in
            self?.purchase()
        }
            
        origialPrice_ = _fetchOrigialPrice() ?? ""
        
        interfaceThemeDidChanged(self.window?.appearance?.name ?? .aqua)
        
        if #available(macOS 15.0, *) {
            var rootView = CPDFOfferSubscriptionStoreView()
            rootView.eligibleOffersCallback = { offertIds in
                KMPrint("你符合赢回的优惠卷：")
                KMPrint(offertIds)
                if offertIds.isEmpty == false {
                    if let data = offertIds.first, data.isEmpty == false {
                        if let data = self.offerId_, data.isEmpty == false {
                            return
                        }
                        
                        if self.needShow() {
                            self._selectOffer(offerId: data)
                            
                            self.showWindow(nil)
                            
                            self._saveRecord()
                            
                            self.window?.makeKeyAndOrderFront(nil)
                        } else {
                            KMPrint("Win Back：不需要显示")
                            
                            self.window?.close()
                        }
                    }
                }
            }
            let hostingView = NSHostingView(rootView: rootView)
            
            hostingView.frame = NSRect(x: 0, y: 0, width: 1000, height: 1000)
            contentBox.addSubview(hostingView, positioned: .below, relativeTo: backgroundIv)
            
            hostingView.isHidden = true
        } else {
            self.window?.close()
        }
        
//        https://api.storekit.itunes.apple.com/inApps/v1/subscriptions/{transactionId}
//        https://api.storekit-sandbox.itunes.apple.com/inApps/v1/subscriptions/{transactionId}
        
        // /2000000828945111
//        let url = "https://api.storekit-sandbox.itunes.apple.com/inApps/v1/subscriptions"
////        let urlString = KMMemberCenterConfig().activityBaseURL() + url
//        // ["transactionId" : "2000000828945111"]
//        KMRequestServer.requestServer.request(urlString: url, method: .get, params: nil) { requestSerializer in
////            requestSerializer.setValue("Bearer " + token, forHTTPHeaderField: "Authorization")
//        } completion: { task, responseObject, error in
//            guard let dict = responseObject as? [String : Any] else {
////                callback(false, nil, error)
//                return
//            }
//            
//            let model = KMRequestResultModel(dict: dict)
////            callback(model.isSuccess(), model, error)
//        }
//        KMRequestServer.requestServer.request(urlString: url, method: .get, params: nil, completion:?)
        
//        Self.GET(urlString: url, parameter: nil) { success , result , err in
//            KMPrint("")
//        }
    }
    
    public class func GET(urlString: String, parameter: [String : String]? = nil, headers: [String : String]? = nil, callback:@escaping ((Bool, [String : Any]?, String?)->Void)) {
//        var _urlString = "\(self.baseUrl)"+urlString
        var _urlString = urlString
        if let data = parameter, !data.isEmpty {
            _urlString.append("?")
            var i = 0
            for (key, value) in data {
                _urlString.append("\(key)=\(value)")
                if (data.count > 1 && i != data.count-1) {
                    _urlString.append("&")
                }
                i += 1
            }
        }
        
        let url: URL = URL(string: _urlString)!
         
        let session = URLSession.shared
        var request = URLRequest(url: url)
        request.httpMethod = "GET"
        request.setValue("application/json; charset=UTF-8", forHTTPHeaderField: "Content-Type")
        if let _headers = headers {
            for (key, value) in _headers {
                request.setValue(value, forHTTPHeaderField: key)
            }
        }
        request.timeoutInterval = 60.0
        session.configuration.timeoutIntervalForRequest = 30.0
        
        let task: URLSessionDataTask = session.dataTask(with: request) { data , response, error in
            DispatchQueue.main.async {
                if let _ = error {
                    callback(false, nil, error.debugDescription)
                    return
                }
                guard let _data = data else {
                    callback(false, nil, error.debugDescription)
                    return
                }
                if let result = self.JsonDataParse(data: _data) {
//                    let resultMap = KMRequestResultModel(dict: result)
//                    var dataDict: [String : Any] = [:]
//                    if let data = resultMap.data as? [String : Any] {
//                        dataDict = data
//                    } else {
//                        if let dataArray = resultMap.data as? [Any] {
//                            var i = 0
//                            for dict in dataArray {
//                                dataDict["\(i)"] = dict
//                                i += 1
//                            }
//                        }
//                    }
//
//                    callback(resultMap.isSuccess(), dataDict, error.debugDescription)
//                    return
                }
//                callback(false, nil, error.debugDescription)
            }
        }
        task.resume()
    }
    
    private class func JsonDataParse(data: Data) -> Dictionary<String,Any>? {
        let result = try?JSONSerialization.jsonObject(with: data, options: .mutableContainers)
        return result as? Dictionary<String, Any>
    }
    
    override func interfaceThemeDidChanged(_ appearance: NSAppearance.Name) {
        super.interfaceThemeDidChanged(appearance)

        KMMainThreadExecute {
            if KMAppearance.isDarkMode() {
                self.titleLabel.textColor = .white
                
                let attri = NSMutableAttributedString(string: NSLocalizedString("Special Offer - ", comment: ""), attributes: [.font : NSFont.SFProTextRegularFont(32), .foregroundColor : NSColor.white])
                attri.append(.init(string: self.displayPriceString_, attributes: [.font : NSFont.SFProTextRegularFont(32), .foregroundColor : NSColor(hex: "#FD7272")]))
                attri.append(.init(string: self.origialPrice_, attributes: [.font : NSFont.SFProTextRegularFont(24), .foregroundColor : NSColor(hex: "#7E7F85"), .strikethroughStyle : NSUnderlineStyle.single.rawValue]))
                let style = NSMutableParagraphStyle()
                style.alignment = .center
                attri.addAttribute(.paragraphStyle, value: style, range: NSMakeRange(0, attri.length))
                self.subTitleLabel.attributedStringValue = attri
                
                self.despBox.fillColor = NSColor.white.withAlphaComponent(0.15)
                self.despView_.titleLabel.textColor = .white

                let despAttri = NSMutableAttributedString(string: NSLocalizedString("First 6 months", comment: "")+" ", attributes: [.font : NSFont.SFProTextRegularFont(14), .foregroundColor : NSColor.white])
                despAttri.append(.init(string: self.displayPriceString_, attributes: [.font : NSFont.SFProTextRegularFont(14), .foregroundColor : NSColor(hex: "#227AFF")]))
                let string = ", " + String(format: NSLocalizedString("then %@ for 6 months.", comment: ""), self.origialPrice_)
                despAttri.append(.init(string: string, attributes: [.font : NSFont.SFProTextRegularFont(14), .foregroundColor : NSColor.white]))
                self.despView_.subTitleLabel.attributedStringValue = despAttri
                
                self.despView_.hLine.layer?.backgroundColor = NSColor.white.withAlphaComponent(0.15).cgColor
                
                self.despView_.tipLabel.textColor = NSColor(hex: "#C8C9CC")
            } else {
                self.titleLabel.textColor = NSColor(hex: "#0E1114")
                
                let attri = NSMutableAttributedString(string: NSLocalizedString("Special Offer - ", comment: ""), attributes: [.font : NSFont.SFProTextRegularFont(32), .foregroundColor : NSColor(hex: "#000150")])
                attri.append(.init(string: self.displayPriceString_, attributes: [.font : NSFont.SFProTextRegularFont(32), .foregroundColor : NSColor(hex: "#FD7272")]))
                attri.append(.init(string: self.origialPrice_, attributes: [.font : NSFont.SFProTextRegularFont(24), .foregroundColor : NSColor(hex: "#757780"), .strikethroughStyle : NSUnderlineStyle.single.rawValue]))
                let style = NSMutableParagraphStyle()
                style.alignment = .center
                attri.addAttribute(.paragraphStyle, value: style, range: NSMakeRange(0, attri.length))
                self.subTitleLabel.attributedStringValue = attri
                
                self.despBox.fillColor = .white
                self.despView_.titleLabel.textColor = NSColor(hex: "#0E1114")
                
                let despAttri = NSMutableAttributedString(string: NSLocalizedString("First 6 months", comment: "")+" ", attributes: [.font : NSFont.SFProTextRegularFont(14), .foregroundColor : NSColor(hex: "#000150")])
                despAttri.append(.init(string: self.displayPriceString_, attributes: [.font : NSFont.SFProTextRegularFont(14), .foregroundColor : NSColor(hex: "#4982E6")]))
                let string = ", " + String(format: NSLocalizedString("then %@ for 6 months.", comment: ""), self.origialPrice_)
                despAttri.append(.init(string: string, attributes: [.font : NSFont.SFProTextRegularFont(14), .foregroundColor : NSColor(hex: "#000150")]))
                self.despView_.subTitleLabel.attributedStringValue = despAttri
                
                self.despView_.hLine.layer?.backgroundColor = NSColor.black.withAlphaComponent(0.15).cgColor
                
                self.despView_.tipLabel.textColor = NSColor(hex: "#757780")
            }
            
            self.buttonView_.backgroundView.colors = [NSColor(hex: "#F8965A"), NSColor(hex: "#FD7171")]
            
            self.buttonView_.button.title = NSLocalizedString("Get Special Offer - Advanced 6 Mos", comment: "")
            self.buttonView_.button.setTitleColor(.white)
        }
    }
    
    // MARK: - Private Methods
    
    private func _showCenter(animate: Bool){
        guard let screenFrame = NSScreen.main?.frame else {
            return
        }
        guard let win = self.window else {
            return
        }
        
        var frame = win.frame
        frame.origin.y = (screenFrame.size.height-frame.size.height)*0.5
        frame.origin.x = (screenFrame.size.width-frame.size.width)*0.5
        win.setFrame(frame, display: true, animate: animate)
    }
    
    // MARK: - Private Methods
    
    private func _saveRecord() {
        let lastShowTime = KMDataManager.ud_double(forKey: lastShowTimeKey_)
        if lastShowTime <= 0 {
            let cnt = KMDataManager.ud_integer(forKey: showCountKey_)
            KMDataManager.ud_set(cnt+1, forKey: showCountKey_)
            
            let date = Date().timeIntervalSince1970
            KMDataManager.ud_set(date, forKey: lastShowTimeKey_)
            return
        }
        
        let date = Date(timeIntervalSince1970: lastShowTime)
        
        let calendar = Calendar.current
        let unit: Set<Calendar.Component> = [.day,.month,.year]
        let nowComps = calendar.dateComponents(unit, from: Date())
        let selfCmps = calendar.dateComponents(unit, from: date)
        
        let theYear = selfCmps.year ?? 0
        let theMonth = selfCmps.month ?? 0
        let theDay = selfCmps.day ?? 0
        let otherYear = nowComps.year ?? 0
        let otherMonth = nowComps.month ?? 0
        let otherDay = nowComps.day ?? 0
        
        if otherYear > theYear || otherMonth > theMonth {
            let cnt = KMDataManager.ud_integer(forKey: showCountKey_)
            KMDataManager.ud_set(cnt+1, forKey: showCountKey_)
            
            let date = Date().timeIntervalSince1970
            KMDataManager.ud_set(date, forKey: lastShowTimeKey_)
            return
        }
        
        if otherDay - theDay >= 1 {
            let cnt = KMDataManager.ud_integer(forKey: showCountKey_)
            KMDataManager.ud_set(cnt+1, forKey: showCountKey_)
            
            let date = Date().timeIntervalSince1970
            KMDataManager.ud_set(date, forKey: lastShowTimeKey_)
            return
        }
    }
    
    private func _fetchOrigialPrice() -> String? {
        return IAPProductsManager.default().fourDevicesAllAccessPackNew6Months_lite?.price()
    }
    
    private func _selectOffer(offerId: String) {
        offerId_ = offerId
        if #available(macOS 12.0, *) {
            winbackOffers(productId: "com.pdfreaderpro.mac_free.member.all_access_pack_advanced_6months.001") { offsers in
                for offse in offsers {
                    let data = offse.id
                    if data == offerId {
                        self.displayPriceString_ = offse.displayPrice
                        
                        self.interfaceThemeDidChanged(self.window?.appearance?.name ?? .aqua)
                    }
                }
            }
        } else {
            
        }
    }
    
    private func _showAlert(message: String) {
        KMMainThreadExecute {
            let alert = NSAlert()
            alert.alertStyle = .critical
            alert.messageText = message
            alert.addButton(withTitle: NSLocalizedString("OK", comment: ""))
            alert.runModal()
        }
    }
    
    private func _beginLoading() {
        self.window?.contentView?.beginLoading()
    }
    
    private func _endLoading() {
        self.window?.contentView?.endLoading()
    }
    
    // MARK: - Public Methods
    
    public func openWindow() {
//        self.showWindow(nil)
        
        if #available(macOS 12.0, *) {
            winbackOffers(productId: "com.pdfreaderpro.mac_free.member.all_access_pack_advanced_6months.001") { [weak self] offers in
                if offers.isEmpty { // 商品没有配置 Win Back 优惠卷
                    self?.window?.setIsVisible(false)
                    self?.window?.close()
                } else {
                    self?.showWindow(nil)
                    
                    self?.window?.setIsVisible(false)
                    self?.window?.close()
                }
            }
        } else {
            window?.setIsVisible(false)
            window?.close()
        }
    }
    
    public func needShow() -> Bool {
        if #available(macOS 15.0, iOS 18.0, *) {
            if KMDataManager.ud_integer(forKey: showCountKey_) >= 3 {
#if DEBUG
                return true
#else
                return false
#endif
            }
            
            let lastShowTime = KMDataManager.ud_double(forKey: lastShowTimeKey_)
            if lastShowTime > 0 {
                let date = Date(timeIntervalSince1970: lastShowTime)
                if date.isToday() {
#if DEBUG
#else
                    return false
#endif
                }
            }
            
            if KMNewUserGiftManager.default.loginProgressState == .none || KMNewUserGiftManager.default.fetchReceiptProgressState == .none {
                return false
            }
            
            let member = KMMemberInfo.shared
//            if member.isLogin {
//                if member.is_advanced() && member.is_subscribe() && (member.is_year() || member.is_half_year()) {
//                    return false
//                }
//            }
            if member.isMemberAllFunction { // 有本地或账号权益
                return false
            }
            
            return true
        }
        return false
    }
    
    public func clearRecord() {
        KMDataManager.ud_set(0, forKey: showCountKey_)
        KMDataManager.ud_set(0, forKey: lastShowTimeKey_)
    }
    
    @available(macOS 12.0, *)
    public func winbackOffers(productId: String?, callback: (([Product.SubscriptionOffer])->Void)?) {
        if #available(macOS 15.0, iOS 18.0, *) {
            guard let theProductId = productId else {
                callback?([])
                return
            }
            
            Task {
                let products = try await Product.products(for: [theProductId])
                guard let product = products.first else {
                    callback?([])
                    return
                }
                
                guard let subscriptionInfo = product.subscription else {
                    callback?([])
                    return
                }
                
                callback?(subscriptionInfo.winBackOffers)
            }
        } else {
            callback?([])
        }
    }
    
    public func purchase() {
        Task { @MainActor in
            // 加载产品
            if #available(macOS 15.0, *) {
                let products = try? await Product.products(for: ["com.pdfreaderpro.mac_free.member.all_access_pack_advanced_6months.001"])
                guard let product = products?.first else {
                    _showAlert(message: "未找到指定的产品")
                    return
                }
                
                // 确保产品为订阅类型
                guard let subscriptionInfo = product.subscription else {
                    _showAlert(message: "该产品不是订阅类型")
                    return
                }
                
                // 查找可用的 Win-Back Offer
                KMPrint("product：\(product)")
                KMPrint("subscriptionInfo.winBackOffers：\(subscriptionInfo.winBackOffers)")
                let offers = subscriptionInfo.winBackOffers

                var off: Product.SubscriptionOffer?
                for offer in offers {
                    if self.offerId_ == offer.id {
                        off = offer
                        break
                    }
                }
                
                guard let winBackOffer = off else {
                    KMPrint("没有找到适合用户的 Win-Back Offer")
                    _showAlert(message: "No Offer")
                    return
                }
                
                // 使用 Win-Back Offer 创建购买选项
                let purchaseOption = Product.PurchaseOption.winBackOffer(winBackOffer)
                
                self._beginLoading()
                // 发起购买
                let purchaseResult = try await product.purchase(options: [purchaseOption])
                switch purchaseResult {
                case .success(let verificationResult):
                    self._endLoading()
                    
                    switch verificationResult {
                    case .verified(let transaction):
                        KMPrint("购买成功：\(transaction.id)")
                        await transaction.finish()
                        
                        DispatchQueue.main.asyncAfter(deadline: .now()+1) {
                            self.window?.close()
                            
                            let man = IAPProductsManager.default()
                            man?.winbackIAPPurchased(withProdcutId: transaction.productID, transactionId: "\(transaction.id)")
                        }
                        
                        
                    case .unverified(_, let error):
                        KMPrint("验证失败：\(error)")
                    }
                case .userCancelled:
                    KMPrint("用户取消了购买")
                    self._endLoading()
                case .pending:
                    KMPrint("购买失败")
                @unknown default:
                    KMPrint("购买失败")
                }
            }
        }
    }
}

// MARK: - NSWindowDelegate

extension KMWinBackWindowController: NSWindowDelegate {
    func windowDidResize(_ notification: Notification) {
        guard let data = window?.isEqual(to: notification.object), data == true else {
            return
        }
        backgroundIv.image?.size = window?.frame.size ?? NSMakeSize(520, 540)
    }
}