//
//  KMWatermarkView.swift
//  PDF Reader Pro
//
//  Created by lizhe on 2023/11/14.
//


import Cocoa

enum KMWatermarkManagerType {
    case add
    case edit
    case use
}

typealias KMWatermarkViewOperateCallBack = (_ watermark: KMWatermarkModel, _ countType: Int) -> ()
typealias KMWatermarkViewCancelAction = (_ view: KMWatermarkView) -> Void

class KMWatermarkView: KMBaseXibView, NSTextFieldDelegate, NSComboBoxDelegate, NSTextViewDelegate, CPDFViewDelegate {
    //顶部box
    @IBOutlet var typeBox: NSBox!
    @IBOutlet var txtButton: NSButton!
    @IBOutlet var fileButton: NSButton!
    @IBOutlet var filePathLabel: NSTextField!
    @IBOutlet var browsebutton: NSButton!
    @IBOutlet var ratioLabel: NSTextField!
    @IBOutlet var ratioTextField: NSTextField!
    @IBOutlet var ratioStepper: NSStepper!
    @IBOutlet var fontLabel: NSTextField!
    @IBOutlet var fontComboBox: NSComboBox!
    @IBOutlet var fontSizeLabel: NSTextField!
    @IBOutlet var fontSizeCombobox: NSComboBox!
    @IBOutlet var colorLabel: NSTextField!
    @IBOutlet var colorWell: NSColorWell!
    @IBOutlet var watermarkStringTextView: NSTextView!
    var maskView: KMBookletMaskView?
    
    //底部box
    @IBOutlet var appearanceBox: NSBox!
    @IBOutlet var angleLabel: NSTextField!
    @IBOutlet var angleTextF: NSTextField!
    @IBOutlet var angleStepper: NSStepper!
    @IBOutlet var left45IndicateView: KMAngleIndicateView!
    @IBOutlet var horizontalIndicateView: KMAngleIndicateView!
    @IBOutlet var right45IndicateView: KMAngleIndicateView!
    
    @IBOutlet var alphaLabel: NSTextField!
    @IBOutlet var alphaSlider: NSSlider!
    @IBOutlet var alphaTextField: NSTextField!
    @IBOutlet var alphaStepper: NSStepper!
    @IBOutlet var watermarkPositionLabel: NSTextField!
    @IBOutlet var OnPageButton: NSButton!
    @IBOutlet var backPageButton: NSButton!
    @IBOutlet var positionView: KMPostionIndicateView!
    @IBOutlet var horizentalGapLabel: NSTextField!
    @IBOutlet var verticalGapLabel: NSTextField!
    @IBOutlet var horizentalGapTextField: NSTextField!
    @IBOutlet var verticalFapTextField: NSTextField!
    @IBOutlet var horizentalGapStepper: NSStepper!
    @IBOutlet var verticalGapStepper: NSStepper!
    @IBOutlet var pageRangeLabel: NSTextField!
    @IBOutlet var pageRangeComboBox: NSComboBox!
    
    //保存到模版按钮
    @IBOutlet var saveToTemplateButton: NSButton!
    @IBOutlet var templateNameLabel: NSTextField!
    @IBOutlet var templateNameTextField: NSTextField!
    
    @IBOutlet var isTileWater: NSButton!
    @IBOutlet var spacingHorTextField: NSTextField!
    @IBOutlet var spacingHorStepper: NSStepper!
    @IBOutlet var horizentalIconButton: NSButton!
    @IBOutlet var verticalIconButton: NSButton!
    @IBOutlet var spacingVerTextField: NSTextField!
    @IBOutlet var spacingStepper: NSStepper!
    
    //底部按钮
    @IBOutlet var batchButton: NSButton!
    @IBOutlet var cancelButton: NSButton!
    @IBOutlet var applyButton: NSButton!
    
    //左侧
    @IBOutlet var previewPageButton: NSButton!
    @IBOutlet var nextPageButton: NSButton!
    @IBOutlet var currentPageIndexTextF: NSTextField!
    @IBOutlet var totalPageCountLabel: NSTextField!
    @IBOutlet var pdfView: KMWatermarkPDFView!
    var fontModified: Bool = false
    
    var currentType: Int = 0
    
    var filePath: String = Bundle.main.path(forResource: "Quick Start Guide", ofType: "pdf") ?? ""
    var password: String = ""
    var originalWatermark: KMWatermarkModel = KMWatermarkModel()
    var watermark: KMWatermarkModel = KMWatermarkModel()
    var type: KMWatermarkManagerType = .use {
        didSet {
            if type == .edit {
                
            } else {
                watermark.watermarkID = KMWatermarkManager.defaultManager.fetchAvailableName()
            }
            self.templateNameTextField.stringValue = self.watermark.watermarkID
        }
    }
    var pdfDocument: CPDFDocument? {
        didSet {
            self._fileAttri = KMFileAttribute()
            self._fileAttri?.password = self.pdfDocument?.password ?? ""
            self._fileAttri?.filePath = self.pdfDocument?.documentURL?.path ?? ""
            self.password = pdfDocument?.password ?? ""
            DispatchQueue.main.asyncAfter(deadline: DispatchTime.now() + 0.3) {
                self.pdfView.watermark = self.watermark
                self.pdfView.document = self.pdfDocument
                
                self.pdfView.autoScales = true
                self.pdfView.documentView().enclosingScrollView?.scrollerStyle = .overlay
                self.pdfView.documentView().enclosingScrollView?.hasVerticalScroller = false
                self.pdfView.documentView().enclosingScrollView?.hasHorizontalScroller = false
            }
//            self.reloadData()
        }
    }
    
    var onlyManagerTemplate: Bool = true
    var isHiddenBatchBtn: Bool = false

    private var _fileAttri: KMFileAttribute?
    
    var cancelAction: KMWatermarkViewCancelAction?
    var operateCallBack: KMWatermarkViewOperateCallBack?
    
    convenience init(baseFile filePath: String, watermark: KMWatermarkModel, password: String, type: KMWatermarkManagerType, fileType countType: Int) {
        self.init()
        
        self.filePath = filePath
        self.password = password
        self.originalWatermark = watermark.copy() as! KMWatermarkModel
        self.watermark = watermark.copy() as! KMWatermarkModel
        self.type = type
        self.pdfDocument = CPDFDocument(url: URL(fileURLWithPath: self.filePath))
        self.currentType = countType
        
        if pdfDocument?.isLocked ?? false {
            pdfDocument?.unlock(withPassword: password)
        }
    }
    
    override func setup() {
        pdfView.setDisplay(.singlePage)
        
//        if (pdfView.documentView() != nil) {
//            pdfView.setDisplay(.singlePage)
//            pdfView.documentView().enclosingScrollView?.scrollerStyle = .overlay
//            pdfView.documentView().enclosingScrollView?.hasVerticalScroller = false
//            pdfView.documentView().enclosingScrollView?.hasHorizontalScroller = false
//        }
        
        for i in 0..<3 {
            for j in 0..<3 {
                if i == Int(watermark.horizontalMode) && j == Int(watermark.verticalMode) {
                    positionView.style = KMPositionIndicateViewStyle(rawValue: i + 3 * j)!
                }
            }
        }
        
        positionView.styleChangedCallBack = { [weak self] in
            guard let self = self else { return }
            self.watermark.horizontalMode = self.positionView.style.rawValue % 3
            self.watermark.verticalMode = self.positionView.style.rawValue / 3
            self.updatePDFView()
        }
        
        currentPageIndexTextF.stringValue = "1"
//        let numberFormatter = currentPageIndexTextF.formatter as! NumberFormatter
//        numberFormatter.maximum = NSNumber(value: pdfDocument!.pageCount)
        pdfView.delegate = self
        
        let formatter = TextFieldFormatter.init()
        formatter.allowedCharacterSet = "-"
        self.angleTextF.formatter = formatter
        angleTextF.delegate = self
        
        let formatter2 = TextFieldFormatter.init()
        formatter2.allowedCharacterSet = "%"
        self.alphaTextField.formatter = formatter2
        alphaTextField.delegate = self
        
        let formatter3 = TextFieldFormatter.init()
        formatter3.allowedCharacterSet = ".-"
        self.horizentalGapTextField.formatter = formatter3
        horizentalGapTextField.delegate = self
        
        let formatter4 = TextFieldFormatter.init()
        formatter4.allowedCharacterSet = ".-"
        self.verticalFapTextField.formatter = formatter4
        verticalFapTextField.delegate = self
        
        let formatter5 = TextFieldFormatter.init()
        formatter5.allowedCharacterSet = ""
        self.spacingHorTextField.formatter = formatter5
        spacingHorTextField.delegate = self
        
        let formatter6 = TextFieldFormatter.init()
        formatter6.allowedCharacterSet = ""
        self.spacingVerTextField.formatter = formatter6
        spacingVerTextField.delegate = self
        
        left45IndicateView.style = .left45
        left45IndicateView.touchCallBack = { [weak self] in
            guard let self = self else { return }
            self.watermark.rotation = -45
            self.angleStepper.doubleValue = self.watermark.rotation
            self.angleTextF.stringValue = "\(self.angleStepper.intValue)"
            self.checkAngle()
            self.updatePDFView()
        }
        
        horizontalIndicateView.style = .horizontal
        horizontalIndicateView.touchCallBack = { [weak self] in
            guard let self = self else { return }
            self.watermark.rotation = 0
            self.angleStepper.doubleValue = 0
            self.angleTextF.stringValue = "\(0)"
            self.checkAngle()
            self.updatePDFView()
        }
        
        right45IndicateView.style = .right45
        right45IndicateView.touchCallBack = { [weak self] in
            guard let self = self else { return }
            self.watermark.rotation = 45
            self.angleStepper.doubleValue = self.watermark.rotation
            self.angleTextF.stringValue = "\(self.angleStepper.intValue)"
            self.checkAngle()
            self.updatePDFView()
        }
        
        saveToTemplateButton.isEnabled = onlyManagerTemplate
        
//        if type == .use {
//            saveToTemplateButton.isHidden = true
//            saveToTemplateButton.state = .off
//        } else {
//            saveToTemplateButton.isHidden = false
//            saveToTemplateButton.state = .on
//        }
    
        if type == .add {
            applyButton.title = NSLocalizedString("Apply", comment: "")
            batchButton.isHidden = true
        } else if type == .edit {
            applyButton.title = NSLocalizedString("Apply", comment: "")
            batchButton.isHidden = true
        } else if type == .use {
            applyButton.title = NSLocalizedString("Save & Apply", comment: "")
        }
        
        filePathLabel.stringValue = ""
        filePathLabel.placeholderString = NSLocalizedString("Select a File", comment: "")
        
        fontSizeCombobox.removeAllItems()
        fontSizeCombobox.addItems(withObjectValues: ["9","10","11","12","13","14","18","24","36","48","64","72","96","144","288"])
        fontSizeCombobox.formatter = TextFieldFormatter()
        
        watermarkStringTextView.delegate = self
        
        pageRangeComboBox.removeAllItems()
        pageRangeComboBox.addItems(withObjectValues: [
            NSLocalizedString("All Pages", comment: ""),
            NSLocalizedString("Odd Pages Only", comment: ""),
            NSLocalizedString("Even Pages Only", comment: ""),
            NSLocalizedString("e.g. 1,3-5,10", comment: "")
        ])
        
        pageRangeComboBox.placeholderString = NSLocalizedString("e.g. 1,3-5,10", comment: "")
        pageRangeComboBox.delegate = nil
        pageRangeComboBox.selectItem(at: 0)
        pageRangeComboBox.isEditable = false
        pageRangeComboBox.delegate = self
        
        fontSizeCombobox.wantsLayer = true
        pageRangeComboBox.wantsLayer = true
        
        fontSizeCombobox.layer?.cornerRadius = 3.0
        pageRangeComboBox.layer?.cornerRadius = 3.0
        
        self.verticalFapTextField.delegate = self
        self.horizentalGapTextField.delegate = self
        self.spacingHorTextField.delegate = self
        self.spacingVerTextField.delegate = self
    }

    
    override func updateLanguage() {
        typeBox.title = NSLocalizedString("Source", comment: "")
        typeBox.titleFont = NSFont.systemFont(ofSize: 13)
        txtButton.title = NSLocalizedString("Text", comment: "")
        fileButton.title = NSLocalizedString("File", comment: "")
        browsebutton.title = NSLocalizedString("Choose...", comment: "")
        ratioLabel.stringValue = "\(NSLocalizedString("Ratio", comment: "")):"
        fontLabel.stringValue = NSLocalizedString("Font", comment: "")
        horizentalIconButton.toolTip = NSLocalizedString("Horizontal Distance", comment: "")
        verticalIconButton.toolTip = NSLocalizedString("Vertical Distance", comment: "")
        fontSizeLabel.stringValue = "\(NSLocalizedString("Font Size", comment: "")):"
        colorLabel.stringValue = "\(NSLocalizedString("Color", comment: "")):"
        templateNameTextField.stringValue = watermark.watermarkID ?? ""
        
        appearanceBox.title = NSLocalizedString("Appearance", comment: "")
        appearanceBox.titleFont = NSFont.systemFont(ofSize: 13)
        angleLabel.stringValue = "\(NSLocalizedString("Rotation", comment: "")):"
        alphaLabel.stringValue = "\(NSLocalizedString("Opacity", comment: "")):"
        watermarkPositionLabel.stringValue = "\(NSLocalizedString("Position", comment: "")):"
        OnPageButton.title = NSLocalizedString("Appear on top of page", comment: "")
        backPageButton.title = NSLocalizedString("Appear behind page", comment: "")
        pageRangeLabel.stringValue = "\(NSLocalizedString("Page Range", comment: "")):"
        isTileWater.title = NSLocalizedString("Tile", comment: "")
        
        OnPageButton.toolTip = NSLocalizedString("Appear on top of page", comment: "")
        backPageButton.toolTip = NSLocalizedString("Appear behind page", comment: "")
        pageRangeLabel.toolTip = "\(NSLocalizedString("Page Range", comment: "")):"
        
        horizentalGapLabel.stringValue = "X:"
        verticalGapLabel.stringValue = "Y:"
        
        saveToTemplateButton.title = NSLocalizedString("Add to Template", comment: "")
        
        templateNameLabel.stringValue = NSLocalizedString("Name:", comment: "")
        
        batchButton.title = NSLocalizedString("Batch", comment: "")
        cancelButton.title = NSLocalizedString("Cancel", comment: "")
    }
    
    override func reloadData() {
        guard let pdfDocument = pdfDocument else { return }
        let opacity = round(watermark.opacity * 100) / 100
        
        watermarkStringTextView.string = watermark.text
        colorWell.color = watermark.getTextColor()
        
        totalPageCountLabel.stringValue = "/ \(pdfDocument.pageCount)"
        
        fontSizeCombobox.stringValue = "\(Int(watermark.getTextFontSize()))"
        angleStepper.doubleValue = Double(watermark.rotation)
        angleTextF.stringValue = "\(angleStepper.intValue)"
        
        OnPageButton.state = watermark.isFront ? .on : .off
        backPageButton.state = watermark.isFront ? .off : .on
        
        alphaSlider.doubleValue = watermark.opacity
        alphaStepper.doubleValue = watermark.opacity
        alphaTextField.stringValue = "\(Int(opacity * 100))%"
        ratioStepper.doubleValue = watermark.scale
        ratioTextField.stringValue = "\(Int(opacity * 100))%"
        fontComboBox.stringValue = "\(watermark.getTextFontSize() )"
        filePathLabel.stringValue = watermark.imagePath 
        batchButton.isHidden = isHiddenBatchBtn
        if !isHiddenBatchBtn {
            self.batchButton.isHidden = type != .use
        }
        if currentType == 0 {
            changeTypeBoxState(isTextWatermark: true)
        } else {
            changeTypeBoxState(isTextWatermark: false)
        }
        
        switch watermark.pageRangeType {
        case .all:
            pageRangeComboBox.isEditable = false
            pageRangeComboBox.selectItem(at: 0)
        case .odd:
            pageRangeComboBox.isEditable = false
            pageRangeComboBox.selectItem(at: 1)
        case .even:
            pageRangeComboBox.isEditable = false
            pageRangeComboBox.selectItem(at: 2)
        case .other:
            pageRangeComboBox.isEditable = true
            pageRangeComboBox.selectItem(at: 3)
            pageRangeComboBox.stringValue = watermark.pagesString
        }
        
        for i in 0..<3 {
            for j in 0..<3 {
                if i == Int(watermark.horizontalMode) && j == Int(watermark.verticalMode) {
                    self.positionView.style = KMPositionIndicateViewStyle(rawValue: i + 3 * j)!
                }
            }
        }
        
        verticalGapStepper.doubleValue = Double(watermark.verticalSpace)
        verticalFapTextField.stringValue = "\(verticalGapStepper.doubleValue)"
        horizentalGapStepper.doubleValue = Double(watermark.horizontalSpace)
        horizentalGapTextField.stringValue = "\(horizentalGapStepper.doubleValue)"
        
        spacingHorTextField.stringValue = "\(watermark.tileHorizontalSpace)"
        spacingVerTextField.stringValue = "\(watermark.tileVerticalSpace)"
        spacingHorStepper.doubleValue = Double(watermark.tileHorizontalSpace)
        spacingStepper.doubleValue = Double(watermark.tileVerticalSpace)
        
        if watermark.isTilePage {
            isTileWater.state = .on
            spacingHorTextField.isEnabled = true
            spacingHorStepper.isEnabled = true
            spacingVerTextField.isEnabled = true
            spacingStepper.isEnabled = true
        } else {
            isTileWater.state = .off
            spacingHorTextField.isEnabled = false
            spacingHorStepper.isEnabled = false
            spacingVerTextField.isEnabled = false
            spacingStepper.isEnabled = false
        }
        
        pageRangeComboxAction(Any.self)
        checkAngle()
    }
    
    override func addNotification() {
        NotificationCenter.default.addObserver(self, selector: #selector(pageChangeNotification), name: NSNotification.Name.CPDFViewPageChanged, object: self.pdfView)
    }
    func updatePDFView() {
        //        pdfView.needsDisplay = true
        km_synchronized(self) {
            self.pdfView.setNeedsDisplayForVisiblePages()
        }
    }
    
    func checkAngle() {
        left45IndicateView.isSelcted = false
        horizontalIndicateView.isSelcted = false
        right45IndicateView.isSelcted = false
        
        switch watermark.rotation {
        case -45:
            left45IndicateView.isSelcted = true
        case 0:
            horizontalIndicateView.isSelcted = true
        case 45:
            right45IndicateView.isSelcted = true
        default:
            break
        }
    }
    
    func changeTypeBoxState(isTextWatermark: Bool) {
        if isTextWatermark {
            txtButton.state = .on
            watermarkStringTextView.isEditable = true
            watermarkStringTextView.isSelectable = true
            fontSizeCombobox.isEnabled = true
            colorWell.isEnabled = true
            
            fileButton.state = .off
            browsebutton.isEnabled = false
            ratioTextField.isEnabled = false
            ratioStepper.isEnabled = false
            
            watermark.text = watermarkStringTextView.string
            watermarkStringTextView.string = watermarkStringTextView.string
            watermark.image = nil
            
            if watermarkStringTextView.string.isEmpty == false {
                applyButton.isEnabled = true
                batchButton.isEnabled = true
            } else {
                applyButton.isEnabled = false
                batchButton.isEnabled = false
            }
        } else {
            txtButton.state = .off
            watermarkStringTextView.isEditable = false
            watermarkStringTextView.isSelectable = false
            fontSizeCombobox.isEnabled = false
            colorWell.isEnabled = false
            
            fileButton.state = .on
            browsebutton.isEnabled = true
            ratioTextField.isEnabled = true
            ratioStepper.isEnabled = true
            
            watermark.text = ""
            if let _image = NSImage(contentsOfFile: watermark.imagePath ) {
                watermark.image = _image
            }
            
            if filePathLabel.stringValue.isEmpty == false {
                applyButton.isEnabled = true
                batchButton.isEnabled = true
            } else {
                applyButton.isEnabled = false
                batchButton.isEnabled = false
            }
        }
        updatePDFView()
    }
    
    func checkPageRangeValidate(_ pageRangeString: String) -> Bool {
        var fileAttribute = self._fileAttri
        if fileAttribute == nil {
            fileAttribute = KMFileAttribute()
            fileAttribute?.password = self.pdfDocument?.password ?? ""
            fileAttribute?.filePath = self.pdfDocument?.documentURL.path ?? ""
            self._fileAttri = fileAttribute
        }
        
        fileAttribute?.bAllPage = false
        fileAttribute?.pagesString = self.pageRangeComboBox.stringValue
        
        var pageRange: KMPageRange = .all
        let pageRangeType: KMWatermarkeModelPageRangeType = watermark.pageRangeType
        if pageRangeType == .all {
            pageRange = .all
        } else if pageRangeType == .even {
            pageRange = .even
        } else if pageRangeType == .odd {
            pageRange = .odd
        } else if pageRangeType == .other {
            pageRange = .custom
        }
         
        fileAttribute?.pagesType = pageRange
        
        if let cnt = fileAttribute?.fetchSelectPages().count, cnt == 0 {
            return false
        }
        return true
    }
    
    @objc func controlTextDidEndEditing(_ obj: Notification) {
        if obj.object as? NSComboBox == self.fontSizeCombobox {
            var textSize = CGFloat(Int(self.fontSizeCombobox.stringValue) ?? 0)
            if textSize == 0 {
                textSize = 48
                if self.watermark.isTilePage {
                    textSize = 18
                }
            }
            self.watermark.textFont = KMWatermarkAdjectiveText.font(name: "Helvetica", size: textSize)
            self.fontSizeCombobox.stringValue = "\(Int(textSize))"
            self.updatePDFView()
        } else if obj.object as? NSTextField == self.ratioTextField {
            let formatter = self.ratioTextField.formatter as? NumberFormatter
            _ = formatter?.number(from: self.ratioTextField.stringValue)?.floatValue ?? 0
            self.ratioStepper.doubleValue = Double(self.watermark.scale)
            self.updatePDFView()
        } else if obj.object as? NSTextField == self.angleTextF {
            self.watermark.rotation = CGFloat(Int(self.angleTextF.stringValue) ?? 0)
            self.angleStepper.doubleValue = self.watermark.rotation
            self.checkAngle()
            self.updatePDFView()
        } else if obj.object as? NSTextField == self.alphaTextField {
            let floatValue = self.alphaTextField.stringValue.replacingOccurrences(of: "%", with: "").stringToCGFloat() * 0.01
            
            self.alphaSlider.doubleValue = Double(floatValue)
            self.alphaStepper.doubleValue = Double(floatValue)
            self.watermark.opacity = Double(floatValue)
            self.updatePDFView()
        } else if obj.object as? NSComboBox == self.pageRangeComboBox {
            if self.pageRangeComboBox.indexOfSelectedItem == -1 {
                if !self.checkPageRangeValidate(self.pageRangeComboBox.stringValue) {
                    let alert = NSAlert()
                    alert.alertStyle = .critical
                    alert.messageText = "\(String(describing: self.pdfDocument?.documentURL.lastPathComponent)) \(NSLocalizedString("Invalid page range or the page number is out of range. Please try again.", comment: ""))"
                    alert.runModal()
                    self.window?.makeFirstResponder(self.pageRangeComboBox)
                    return
                } else {
                    self.watermark.pagesString = self.pageRangeComboBox.stringValue
                    self.updatePDFView()
                }
            }
        } else if obj.object as? NSTextField == self.verticalFapTextField {
            self.watermark.verticalSpace = CGFloat(Int(self.verticalFapTextField.stringValue) ?? 0)
            self.verticalGapStepper.doubleValue = Double(self.watermark.verticalSpace)
            self.updatePDFView()
        } else if obj.object as? NSTextField == self.horizentalGapTextField {
            self.watermark.horizontalSpace = CGFloat(Int(self.horizentalGapTextField.stringValue) ?? 0)
            self.horizentalGapStepper.doubleValue = Double(self.watermark.horizontalSpace)
            self.updatePDFView()
        } else if obj.object as? NSTextField == self.currentPageIndexTextF {
            self.pdfView.go(toPageIndex: (Int(self.currentPageIndexTextF.stringValue) ?? 0 - 1), animated: false)
        } else if obj.object as? NSTextField == self.spacingHorTextField {
            self.watermark.tileHorizontalSpace = CGFloat(Int(self.spacingHorTextField.stringValue) ?? 0)
            self.spacingHorStepper.doubleValue = Double(self.watermark.tileHorizontalSpace)
            self.updatePDFView()
        } else if obj.object as? NSTextField == self.spacingVerTextField {
            self.watermark.tileVerticalSpace = CGFloat(Int(self.spacingVerTextField.stringValue) ?? 0)
            self.spacingStepper.doubleValue = Double(self.watermark.tileVerticalSpace)
            self.updatePDFView()
        }
    }
    
    @objc func comboBoxSelectionDidChange(_ notification: Notification) {
        if notification.object as? NSComboBox == self.pageRangeComboBox {
            self.pageRangeComboBox.isEditable = false
            if self.pageRangeComboBox.indexOfSelectedItem == 0 {
                self.watermark.pageRangeType = .all
            } else if self.pageRangeComboBox.indexOfSelectedItem == 1 {
                self.watermark.pageRangeType = .odd
            } else if self.pageRangeComboBox.indexOfSelectedItem == 2 {
                self.watermark.pageRangeType = .even
            } else {
                self.watermark.pageRangeType = .other
                self.pageRangeComboBox.stringValue = ""
                self.pageRangeComboBox.isEditable = true
                self.window?.makeFirstResponder(self.pageRangeComboBox)
            }
        }
    }
    
    @objc func textDidChange(_ notification: Notification) {
        if notification.object as? NSTextView == self.watermarkStringTextView {
            self.watermark.text = self.watermarkStringTextView.string
            self.applyButton.isEnabled = !self.watermark.text.isEmpty
            self.batchButton.isEnabled = !self.watermark.text.isEmpty
            self.updatePDFView()
        }
    }
    
    func isDamageImage(_ image: NSImage?, imagePath path: String) -> Bool {
        let addImageAnnotation = (NSSearchPathForDirectoriesInDomains(.applicationSupportDirectory, .userDomainMask, true).last! as NSString).appendingPathComponent(Bundle.main.bundleIdentifier!)
        if !FileManager.default.fileExists(atPath: addImageAnnotation) {
            try? FileManager.default.createDirectory(atPath: addImageAnnotation, withIntermediateDirectories: false, attributes: nil)
        }
        
        let data = image?.tiffRepresentation
        let imageRep = NSBitmapImageRep(data: data!)
        imageRep?.size = image?.size ?? NSSize.zero
        var imageData: Data?
        if path.lowercased() == "png" {
            imageData = imageRep?.representation(using: .png, properties: [:])
        } else {
            imageData = imageRep?.representation(using: .jpeg, properties: [:])
        }
        
        let rPath = (addImageAnnotation as NSString).appendingPathComponent("waterAnnotation.png")
        if ((try? imageData?.write(to: URL(fileURLWithPath: rPath), options: .atomic)) == nil) {
            return true
        } else {
            return false
        }
    }
    
    func tagString() -> String {
        let dateFormatter = DateFormatter()
        dateFormatter.dateFormat = "yyMMddHHmmss"
        return "\(dateFormatter.string(from: Date()))\(arc4random() % 10000)"
    }
    
    // MARK: - Action
    
    // NSNotification
    @objc func pageChangeNotification(_ notification: Notification) {
        currentPageIndexTextF.stringValue = "\(pdfView.currentPage().pageIndex() + 1)"
    }
    
    // 开始转圈，隐藏转圈提示
    func showWaitting() {
        if maskView == nil {
            maskView = KMBookletMaskView(frame: NSRect(x: 0, y: 0, width: window?.frame.size.width ?? 0, height: window?.frame.size.height ?? 0))
        }
        window?.contentView?.addSubview(maskView!)
    }
    
    func hideWaitting() {
        maskView?.removeFromSuperview()
    }
    
    override func mouseDown(with event: NSEvent) {
        super.mouseDown(with: event)
        window?.makeFirstResponder(nil)
    }
}

extension KMWatermarkView {
    @IBAction func buttonClicked_SwitchTextWatermark(_ sender: Any) {
        currentType = 0
        changeTypeBoxState(isTextWatermark: true)
    }
    
    @IBAction func buttonClicked_SwitchFileWaterMark(_ sender: Any) {
        currentType = 1
        changeTypeBoxState(isTextWatermark: false)
    }
    
    @IBAction func buttonClicked_BrowseFile(_ sender: Any) {
        let openPanel = NSOpenPanel()
        openPanel.canChooseDirectories = false
        openPanel.canChooseFiles = true
        openPanel.allowsMultipleSelection = false
        openPanel.allowedFileTypes = ["jpg", "jpeg", "png", "pdf"]
        
        openPanel.beginSheetModal(for: window!) { (result) in
            if result == NSApplication.ModalResponse.OK {
                guard let url = openPanel.url else { return }
                let filePath = url.path
                
                if filePath.extension.lowercased() == ".pdf" {
                    let pdf = CPDFDocument(url: url)
                    guard !pdf!.isEncrypted else { return }
                    
                    self.showWaitting()
                    
                    let convert = KMPDFConvert()
                    convert.convertType = .png
                    convert.filePath = url.path
                    convert.pages = [1]
                    convert.outputFolderPath = (NSSearchPathForDirectoriesInDomains(.applicationSupportDirectory, .userDomainMask, true).last! as NSString).appendingPathComponent(Bundle.main.bundleIdentifier!)
                    convert.outputFileName = "pdfConvertPng"
                    
                    KMPDFConvertManager.defaultManager.convert(convert: convert, completion: { (finished, error) in
                        self.hideWaitting()
                        if finished {
                            let outputFilePath = convert.outputFilePath
                            if FileManager.default.fileExists(atPath: outputFilePath) {
                                let fimagePath = (try? FileManager.default.subpaths(atPath: outputFilePath))?.first
                                let pdfPath = convert.outputFilePath + "/" + fimagePath!
                                var newPath = (convert.outputFolderPath as NSString).appendingPathComponent(self.tagString())
                                newPath = (newPath as NSString).appendingPathComponent(((url.path as NSString).lastPathComponent as NSString).deletingPathExtension + ".png")
                                
                                do {
                                    try FileManager.default.copyItem(atPath: pdfPath, toPath: newPath)
                                    try FileManager.default.removeItem(atPath: convert.outputFilePath)
                                } catch {
                                    print(error.localizedDescription)
                                }
                                
                                let image = NSImage(contentsOfFile: pdfPath)
                                if self.isDamageImage(image, imagePath: pdfPath) {
                                    let alert = NSAlert()
                                    alert.alertStyle = .critical
                                    alert.messageText = "The file \"\(url.lastPathComponent)\" could not be opened."
                                    alert.informativeText = "It may be damaged or use a file format that PDFull doesn’t recognize."
                                    alert.addButton(withTitle: "Cancel")
                                    alert.beginSheetModal(for: NSApp.mainWindow!) { (response) in
                                        if response == NSApplication.ModalResponse.alertFirstButtonReturn {
                                            // Cancel button clicked
                                        }
                                    }
                                    return
                                }
                                
                                self.filePathLabel.stringValue = url.path
                                self.watermark.imagePath = pdfPath
                                self.watermark.image = NSImage(contentsOfFile: pdfPath)
                                self.watermark.text = ""
                                self.templateNameTextField.stringValue = self.watermark.watermarkID
                                self.applyButton.isEnabled = true
                                self.batchButton.isEnabled = true
                                self.pdfView.setNeedsDisplay(NSRect.zero)
                            }
                        }
                    })
                } else {
                    let image = NSImage(contentsOfFile: url.path)
                    if self.isDamageImage(image, imagePath: url.path) {
                        let alert = NSAlert()
                        alert.alertStyle = .critical
                        alert.messageText = "The file \"\(url.lastPathComponent)\" could not be opened."
                        alert.informativeText = "It may be damaged or use a file format that PDFull doesn’t recognize."
                        alert.addButton(withTitle: "Cancel")
                        alert.beginSheetModal(for: NSApp.mainWindow!) { (response) in
                            if response == NSApplication.ModalResponse.alertFirstButtonReturn {
                                // Cancel button clicked
                            }
                        }
                        return
                    }
                    
                    self.filePathLabel.stringValue = url.path
                    self.watermark.imagePath = url.path
                    self.watermark.image = NSImage(contentsOfFile: url.path)
                    self.watermark.text = ""
                    self.templateNameTextField.stringValue = self.watermark.watermarkID
                    self.applyButton.isEnabled = true
                    self.batchButton.isEnabled = true
                    self.pdfView.setNeedsDisplay(NSRect.zero)
                }
            }
        }
    }
    
    @IBAction func buttonClicked_Batch(_ sender: Any) {
        let needSave = saveToTemplateButton.state == .on
        
        if needSave {
            if templateNameTextField.stringValue.isEmpty {
                self.watermark.watermarkID = templateNameTextField.stringValue
            } else {
                self.watermark.watermarkID = KMWatermarkManager.defaultManager.fetchAvailableName()
            }
            
            let result = KMWatermarkManager.defaultManager.addWatermark(watermark: self.watermark)
            if !result {
                return
            }
        }
        
        if let operateCallBack = self.operateCallBack {
            operateCallBack(self.watermark, currentType)
        }
        
//        self.cancelAction?(self)
    }
    
    @IBAction func buttonClicked_Cancel(_ sender: Any) {
        self.pdfView.watermark = nil
        self.pdfView.background = nil
        self.pdfView.headerFooter = nil
        
        self.cancelAction?(self)
    }
    
    @IBAction func buttonClicked_Done(_ sender: Any) {
        guard let pdfDocument = pdfDocument else { return }
        
        if self.watermark.imagePath.count == 0 {
            if self.watermark.text.isEmpty {
                return
            }
        }
        
        if checkPageRangeValidate(pageRangeComboBox.stringValue) {
            watermark.pagesString = pageRangeComboBox.stringValue
            self.updatePDFView()
            window?.makeFirstResponder(self)
        }

        let needSave = saveToTemplateButton.state == .on
        var pages = [Int]()

        switch pageRangeComboBox.indexOfSelectedItem {
        case 0:
            pages = Array(0..<Int(pdfDocument.pageCount))
        case 1:
            pages = Array(stride(from: 0, to: Int(pdfDocument.pageCount), by: 2))
        case 2:
            pages = Array(stride(from: 1, to: Int(pdfDocument.pageCount), by: 2))
        default:
            var fileAttribute = self._fileAttri
            if fileAttribute == nil {
                fileAttribute = KMFileAttribute()
                fileAttribute?.password = pdfDocument.password ?? ""
                fileAttribute?.filePath = pdfDocument.documentURL?.path ?? ""
                self._fileAttri = fileAttribute
            }
            fileAttribute?.bAllPage = false
            fileAttribute?.pagesType = .custom
            
            fileAttribute?.pagesString = pageRangeComboBox.stringValue

            let selectPages = fileAttribute?.fetchSelectPages() ?? []
            if selectPages.count != 0 {
                pages = selectPages.map { $0 - 1 }
            } else {
                let alert = NSAlert()
                alert.alertStyle = .critical
                alert.messageText = "\(fileAttribute?.filePath.lastPathComponent ?? "") \(NSLocalizedString("Invalid page range or the page number is out of range. Please try again.", comment: ""))"
                alert.runModal()
                return
            }
        }

        watermark.pagesString = pages.isEmpty ? "" : pages.map { "\($0)" }.joined(separator: ",")
        
        
        if needSave {
            if self.templateNameTextField.stringValue.isEmpty {
                self.watermark.watermarkID = KMWatermarkManager.defaultManager.fetchAvailableName()
            } else {
                self.watermark.watermarkID = self.templateNameTextField.stringValue
            }
            
            if KMWatermarkManager.defaultManager.watermarks.contains(self.originalWatermark) {
                let _ = KMWatermarkManager.defaultManager.removeWatermark(watermark: self.originalWatermark)
                let _ = KMWatermarkManager.defaultManager.addWatermark(watermark: self.watermark)
            } else {
                let _ = KMWatermarkManager.defaultManager.addWatermark(watermark: self.watermark)
            }
        }
        
        if self.type == .edit || self.type == .add {
            if let operateCallBack = self.operateCallBack {
                operateCallBack(self.watermark, currentType)
            }
            
            self.cancelAction?(self)
        } else if self.type == .use {
            let fileName = "\(pdfDocument.documentURL?.deletingPathExtension().lastPathComponent ?? NSLocalizedString("Untitled", comment: ""))_Watermark"
            let savePanelAccessoryViewController = KMSavePanelAccessoryController()
            let savePanel = NSSavePanel()
            savePanel.nameFieldStringValue = fileName
            savePanel.allowedFileTypes = ["pdf"]
            savePanel.accessoryView = savePanelAccessoryViewController.view
            
            savePanel.beginSheetModal(for: self.window!) { [unowned self] result in
                if result == NSApplication.ModalResponse.OK {
                    self.addWatermark(model: self.watermark, toPath: savePanel.url!.path) { success in
                        if success {
                            if savePanelAccessoryViewController.openAutomaticButton.state == .on {
                                NSDocumentController.shared.openDocument(withContentsOf: savePanel.url!, display: true) { (document, documentWasAlreadyOpen, error) in
                                }
                            } else {
                                NSWorkspace.shared.activateFileViewerSelecting([savePanel.url!])
                            }
                            self.cancelAction?(self)
                        }
                    }
                }
            }
        }
    }
    
    @IBAction func colorWellColorChanged(_ sender: NSColorWell) {
        let convertedColor = sender.color.usingColorSpaceName(NSColorSpaceName.deviceRGB)
        if let rgbColor = convertedColor {
            self.watermark.textColor = KMWatermarkAdjectiveText.color(red: rgbColor.redComponent, green: rgbColor.greenComponent, blue: rgbColor.blueComponent, alpha: rgbColor.alphaComponent)
            updatePDFView()
        }
    }
    
    @IBAction func radioStepperAction(_ sender: NSStepper) {
        self.ratioTextField.stringValue = "\(Int(sender.doubleValue * 100))%"
        self.watermark.scale = sender.doubleValue
        updatePDFView()
    }
    
    @IBAction func angleStepperAction(_ sender: NSStepper) {
        self.angleTextF.stringValue = "\(sender.doubleValue)"
        self.watermark.rotation = sender.doubleValue
        checkAngle()
        updatePDFView()
    }
    
    @IBAction func alphaSliderAction(_ sender: NSSlider) {
        self.watermark.opacity = sender.doubleValue
        self.alphaStepper.doubleValue = sender.doubleValue
        self.alphaTextField.stringValue = "\(Int(sender.doubleValue * 100))%"
        updatePDFView()
    }
    
    @IBAction func verticalStepperAction(_ sender: NSStepper) {
        self.verticalFapTextField.stringValue = "\(sender.doubleValue)"
        self.watermark.verticalSpace = sender.doubleValue
        updatePDFView()
    }
    
    @IBAction func tileVerticalStepperAction(_ sender: NSStepper) {
        self.watermark.tileVerticalSpace = sender.doubleValue
        self.spacingVerTextField.stringValue = "\(sender.doubleValue)"
        self.watermark.tileVerticalSpace = sender.doubleValue
        updatePDFView()
    }
    
    @IBAction func horizentalStepperAction(_ sender: NSStepper) {
        self.watermark.horizontalSpace = sender.doubleValue
        self.horizentalGapTextField.stringValue = "\(sender.doubleValue)"
        self.watermark.horizontalSpace = sender.doubleValue
        updatePDFView()
    }
    
    @IBAction func tileHorizentalStepperAction(_ sender: NSStepper) {
        self.watermark.tileHorizontalSpace = sender.doubleValue
        self.spacingHorTextField.stringValue = "\(sender.doubleValue)"
        self.watermark.tileHorizontalSpace = sender.doubleValue
        updatePDFView()
    }
    
    @IBAction func alphaSteperAction(_ sender: NSStepper) {
        self.alphaTextField.stringValue = "\(Int(sender.doubleValue * 100))%"
        self.watermark.opacity = sender.doubleValue
        self.alphaSlider.doubleValue = sender.doubleValue
        updatePDFView()
    }
    
    @IBAction func onPageButtonAction(_ sender: Any) {
        self.backPageButton.state = .off
        self.watermark.isFront = true
        updatePDFView()
    }
    
    @IBAction func backPageButtonAction(_ sender: Any) {
        self.OnPageButton.state = .off
        self.watermark.isFront = false
        updatePDFView()
    }
    
    @IBAction func onPageTileButtonAction(_ sender: Any) {
        self.watermark.isTilePage = !self.watermark.isTilePage
        
        if self.type != .edit && !self.fontModified && self.txtButton.state == .on {
            if self.watermark.isTilePage {
                let textSize = self.watermark.getTextFontSize() == 48 ? 18 : self.watermark.getTextFontSize()
                self.isTileWater.state = .on
                self.fontSizeCombobox.stringValue = "\(Int(textSize))"
                self.watermark.textFont = KMWatermarkAdjectiveText.font(name: "Helvetica", size: textSize)
            } else {
                let textSize = self.watermark.getTextFontSize() == 18 ? 48 : self.watermark.getTextFontSize()
                self.fontSizeCombobox.stringValue = "\(Int(textSize))"
                self.watermark.textFont = KMWatermarkAdjectiveText.font(name: "Helvetica", size: textSize)
            }
        }
        
        self.spacingHorTextField.isEnabled = self.watermark.isTilePage
        self.spacingHorStepper.isEnabled = self.watermark.isTilePage
        self.spacingVerTextField.isEnabled = self.watermark.isTilePage
        self.spacingStepper.isEnabled = self.watermark.isTilePage
        
        updatePDFView()
    }
    
    @IBAction func goPrevious(_ sender: Any) {
        if pdfView.canGoToPreviousPage() {
            pdfView.goToPreviousPage(sender)
        }
        let index = pdfDocument?.index(for: pdfView.currentPage())
//        currentPageIndexTextF.stringValue = "\(index! + 1)"
    }
    
    @IBAction func goNext(_ sender: Any) {
        if pdfView.canGoToNextPage() {
            pdfView.goToNextPage(sender)
        }
        
        let index = pdfDocument!.index(for: pdfView.currentPage())
//        currentPageIndexTextF.stringValue = "\(index + 1)"
    }
    
    @IBAction func fontSizeComboxAction(_ sender: NSComboBox) {
        let textSize = CGFloat(Int(fontSizeCombobox.stringValue) ?? 0)
        self.watermark.textFont = KMWatermarkAdjectiveText.font(name: "Helvetica", size: textSize)
        fontModified = true
        updatePDFView()
    }
    
    @IBAction func pageRangeComboxAction(_ sender: Any) {
        pageRangeComboBox.isEditable = false
        var pages = [Int]()
        
        switch pageRangeComboBox.indexOfSelectedItem {
        case 0:
            for i in 0..<pdfDocument!.pageCount {
                pages.append(Int(i))
            }
            watermark.pageRangeType = .all
        case 1:
            for i in 0..<pdfDocument!.pageCount where i % 2 == 0 {
                pages.append(Int(i))
            }
            watermark.pageRangeType = .odd
        case 2:
            for i in 0..<pdfDocument!.pageCount where i % 2 != 0 {
                pages.append(Int(i))
            }
            watermark.pageRangeType = .even
        default:
            var fileAttribute = self._fileAttri
            if fileAttribute == nil {
                fileAttribute = KMFileAttribute()
                fileAttribute?.filePath = pdfDocument?.documentURL?.path ?? ""
                self._fileAttri = fileAttribute
            }
            
            fileAttribute?.bAllPage = false
            fileAttribute?.pagesString = pageRangeComboBox.stringValue
            watermark.pageRangeType = .other
            pageRangeComboBox.isEditable = true
            window?.makeFirstResponder(pageRangeComboBox)
            
            let selectPages = fileAttribute?.fetchSelectPages() ?? []
            pages = selectPages.map { $0 - 1 }
        }
        
        if !pages.isEmpty {
            watermark.pagesString = pages.map { "\($0)" }.joined(separator: ",")
        } else {
            watermark.pagesString = ""
        }
        
        updatePDFView()
    }
}

extension KMWatermarkView {
    class func addWatermarkForOutSide(document: CPDFDocument, model: KMWatermarkModel, toPath: String, completion: @escaping (_ result: Bool) -> ()) {
        DispatchQueue.main.async {
            let wm = KMWatermarkView()
            wm.pdfView = KMWatermarkPDFView()
            wm.pdfView.document = document
            wm.password = document.password ?? ""
            wm.addWatermark(model: model, toPath: toPath, completion: completion)
        }
    }
    func addWatermark(model: KMWatermarkModel, toPath: String, completion: @escaping (_ result: Bool) -> ()) {
        DispatchQueue.global().async {
            let waterDocument = CPDFDocument(url: self.pdfView.document.documentURL)

            guard let waterDocumentT = waterDocument else { return }
            if self.password.isEmpty == false {
                waterDocumentT.unlock(withPassword: self.password)
            }
            var property: CPDFWatermark!
            var scale: CGFloat = model.scale
            if model.image != nil {
                property = CPDFWatermark(document: waterDocument, type: .image)
                property.image = model.image
            } else {
                property = CPDFWatermark(document: waterDocument, type: .text)
                property.text = model.text
                property.textColor = model.getTextColor()
                scale = model.getTextFontSize() / 24.0
            }
            
            property.scale = scale
            property.rotation = -model.rotation
            property.opacity = model.opacity
            property.tx = model.horizontalSpace
            property.ty = model.verticalSpace
            property.isFront = model.isFront
            var pageString: String = ""
            if (model.pageRangeType == .all) {
                for i in 0..<waterDocumentT.pageCount {
                    pageString.append("\(i)")
                    
                    if (i != waterDocumentT.pageCount-1) {
                        pageString.append(",")
                    }
                }
            } else if (model.pageRangeType == .odd) {
                for i in 0 ..< waterDocumentT.pageCount {
                    if (i % 2 == 0) {
                        pageString.append("\(i)")
                    } else {
                        continue
                    }
                    
                    if (i != waterDocumentT.pageCount-1) {
                        pageString.append(",")
                    }
                }
            } else if (model.pageRangeType == .even) {
                for i in 0 ..< waterDocumentT.pageCount {
                    if (i % 2 == 1) {
                        pageString.append("\(i)")
                    } else {
                        continue
                    }
                    
                    if (i != waterDocumentT.pageCount-1) {
                        pageString.append(",")
                    }
                }
            } else {
                pageString = model.pagesString
            }
            property.pageString = pageString
            property.isTilePage = model.isTilePage
            property.horizontalSpacing = model.tileHorizontalSpace / scale
            property.verticalSpacing = model.tileVerticalSpace / scale
            if (model.verticalMode == 0) {
                property.verticalPosition = .top
            } else if (model.verticalMode == 1) {
                property.verticalPosition = .center
            } else if (model.verticalMode == 2) {
                property.verticalPosition = .bottom
            }
            
            if (model.horizontalMode == 0) {
                property.horizontalPosition = .left
            } else if (model.horizontalMode == 1) {
                property.horizontalPosition = .center
            } else if (model.horizontalMode == 2) {
                property.horizontalPosition = .right
            }
            model.watermark = property
            
            waterDocumentT.addWatermark(property)
            
            /// 保存到临时路径
            let documentPath = NSTemporaryDirectory()
            let tempPath: String = "\(documentPath)/\(toPath.lastPathComponent)"
            if (FileManager.default.fileExists(atPath: tempPath)) {
                try?FileManager.default.removeItem(atPath: tempPath)
            }
            
            let result = waterDocumentT.write(to: URL(fileURLWithPath: tempPath))
            if (result) {
                if (FileManager.default.fileExists(atPath: toPath)) {
                    try?FileManager.default.removeItem(atPath: toPath)
                }
                
                try?FileManager.default.moveItem(atPath: tempPath, toPath: toPath)
            } else {
                try?FileManager.default.removeItem(atPath: tempPath)
            }
            
            DispatchQueue.main.async {
                completion(result)
            }
        }
        
//        static func loadAllWatermarks() {
//            self.watermarkArray.removeAll()
//            let watermarks: Array<CPDFWatermark> = self.preView.document.watermarks()
//            for watermark in watermarks {
//                let model = KMWatermarkModel()
//                model.scale = watermark.scale
//                model.rotation = -watermark.rotation
//                model.opacity = watermark.opacity
//                model.verticalSpace = watermark.tx
//                model.horizontalSpace = watermark.ty
//                model.pagesString = watermark.pageString
////                model.textColor = watermark.textColor
//                model.isFront = watermark.isFront
//                model.isTilePage = watermark.isTilePage
//                model.tileVerticalSpace = watermark.verticalSpacing
//                model.tileHorizontalSpace = watermark.horizontalSpacing
//                
//                if (watermark.type == .text) {
//                    model.text = watermark.text
////                    model.textFont
//                    model.scale = watermark.scale * 24
//                } else if (watermark.type == .image) {
//                    model.image = watermark.image
//                }
//                
//                if (watermark.verticalPosition == .top) {
//                    model.verticalMode = 0
//                } else if (watermark.verticalPosition == .center) {
//                    model.verticalMode = 1
//                } else if (watermark.verticalPosition == .bottom) {
//                    model.verticalMode = 2
//                }
//                
//                if (watermark.horizontalPosition == .left) {
//                    model.horizontalMode = 0
//                } else if (watermark.horizontalPosition == .center) {
//                    model.horizontalMode = 1
//                } else if (watermark.horizontalPosition == .right) {
//                    model.horizontalMode = 2
//                }
//                
//                model.watermark = watermark
//                self.watermarkArray.append(model)
//            }
//        }
    }
    
    func deleteWatermarks(toPath: String, completion: @escaping (_ result: Bool) -> ()) -> () {
        if (self.pdfView.document.watermarks().count <= 0) {
            completion(false)
        }
        DispatchQueue.global().async {
            let array: Array<CPDFWatermark> = self.pdfView.document.watermarks()
            for model in array {
                self.pdfView.document.removeWatermark(model)
            }

            /// 保存到临时路径
            let documentPath = NSTemporaryDirectory()
            let tempPath: String = "\(documentPath)/\(toPath.lastPathComponent)"
            if (FileManager.default.fileExists(atPath: tempPath)) {
                try?FileManager.default.removeItem(atPath: tempPath)
            }

            let result = self.pdfView.document.write(to: URL(fileURLWithPath: tempPath))
            if (result) {
                if (FileManager.default.fileExists(atPath: toPath)) {
                    try?FileManager.default.removeItem(atPath: toPath)
                }

                try?FileManager.default.moveItem(atPath: tempPath, toPath: toPath)
            } else {
                try?FileManager.default.removeItem(atPath: tempPath)
            }

            DispatchQueue.main.async {
                completion(result)
            }
        }
    }
}