//
//  KMPrintPreviewView.swift
//  PDF Reader Pro
//
//  Created by lizhe on 2022/12/8.
//

import Cocoa

class KMPrintPreviewView: KMBaseXibView {
    @IBOutlet weak var previewContentView: NSView!
    @IBOutlet weak var previewView: PDFView!
    @IBOutlet weak var posterPreView: KMPrintPosterPreviewView!
    
    @IBOutlet weak var titleLabel: NSTextField!
    @IBOutlet weak var previousButton: NSButton!
    
    @IBOutlet weak var nextButton: NSButton!
    
    @IBOutlet weak var currentPageTextField: KMBaseTextField!
    @IBOutlet weak var pageCountLabel: NSTextField!

    @IBOutlet weak var partitionLabel: NSTextField!
    
    var isPrintPreView: Bool = true
    var reversePrintOrder: Bool = false
    var password: String = ""
    var model: KMPrintModel? {
        didSet {
            self.reloadData()
        }
    }
    
    private lazy var presenter: KMPrintPreviewPresenter = KMPrintPreviewPresenter()
    var pdfDocument: PDFDocument? {
        didSet {
            self.previewView.document = pdfDocument //PDFDocument(url: pdfDocument!.documentURL)
            self.previewView.document?.unlock(withPassword: password)
            self.previewView.autoScales = true
            self.previewView.displayMode = .singlePage
            self.previewView.documentView?.enclosingScrollView?.scrollerStyle = .overlay
            if model?.page.operation.type == .poster {
//                self.presenter.pdfView = self.previewView
                self.presenter.initPresenter(delegate: self, view: self.previewView)
            } else {
                self.presenter.initPresenter(delegate: self, view: self.previewView)
            }
            self.reloadData()
        }
//        didSet {
//            
//            if self.previewView.document != nil {
//                self.previewView.needsDisplay = true
//                self.reloadData()
//            } else {
//                
//                var pdfDocument2 = PDFDocument(url: pdfDocument!.documentURL)
//                var tempDocument = PDFDocument()
//                
//                var pages: [PDFPage] = []
//                for i in 0..<pdfDocument2!.pageCount {
//                    let page: PDFPage = (pdfDocument2?.page(at: i))!
//                    pages.append(page)
//                }
//                
//                for i in 0..<pdfDocument2!.pageCount {
//                    let tempPage: PDFPage = pages[i]
//                    let page = KMPrintPage()
//                    page.pages = pages
//                    page.page = pages[i]
//                    page.data = model
//                    page.drawBlock = { box, context, pages, page, data in
//                        KMPrintPresenter.drawPage(context: context, page: page, model: data)
//                    }
//                    page.setBounds(tempPage.bounds(for: .cropBox), for: .cropBox)
//                    tempDocument.insert(page, at: Int(i))
//                }
//                
//                
//                self.previewView.document = tempDocument
//                self.previewView.autoScales = true
//                self.previewView.displayMode = .singlePage
//                self.previewView.documentView?.enclosingScrollView?.scrollerStyle = .overlay
//                if model?.page.operation.type == .poster {
//                    
//                } else {
//                    self.presenter.initPresenter(delegate: self, view: self.previewView)
//                }
//                self.previewView.needsDisplay = true
//                self.reloadData()
//            }
//        }
    }
    
    deinit {
//        self.delegate = nil
    }

    override func draw(_ dirtyRect: NSRect) {
        super.draw(dirtyRect)

        // Drawing code here.
        
    }
    
    override func setup() {
        super.setup()
        
//        self.previewContentView.wantsLayer = true
//        self.previewContentView.layer?.backgroundColor = NSColor.km_init(hex: "#F7F8FA").cgColor
        
        self.currentPageTextField.textField.font = NSFont.SFProTextRegularFont(12.0)
//        self.currentPageTextField.textField.textColor = NSColor.km_init(hex: "#252629")
        self.currentPageTextField.textDidEndEditing = {[weak self] (string) in
            self?.presenter.toPage(index: max((Int(string) ?? 0) - 1, 0))
        }
        
//        self.partitionLabel.textColor = NSColor.km_init(hex: "#252629")
        
        self.titleLabel.font = NSFont.SFProTextRegularFont(12.0)
//        self.titleLabel.textColor = NSColor.km_init(hex: "#616469")
        
        self.pageCountLabel.font = NSFont.SFProTextRegularFont(12.0)
//        self.pageCountLabel.textColor = NSColor.km_init(hex: "#252629")
        
        self.previousButton.wantsLayer = true
        self.previousButton.layer?.borderWidth = 1
//        self.previousButton.layer?.borderColor = NSColor.km_init(hex: "#DFE1E5").cgColor
        self.previousButton.layer?.cornerRadius = 4
//        self.previousButton.image = NSImage(named: "icon_btn_pagination_back_norm")
        
        self.nextButton.wantsLayer = true
        self.nextButton.layer?.borderWidth = 1
//        self.nextButton.layer?.borderColor = NSColor.km_init(hex: "#DFE1E5").cgColor
        self.nextButton.layer?.cornerRadius = 4
//        self.nextButton.image = NSImage(named: "icon_btn_pagination_lastpage_dis")
    }
    
    func notification() {
        NotificationCenter.default.addObserver(self, selector: #selector(PDFViewDocumentChangedNotification), name: NSNotification.Name.CPDFViewPageChanged, object: nil)
    }
    
    //刷新PDFPreview
    override func reloadData() {
        super.reloadData()

        //UI 显示
        if self.pdfDocument != nil {
            guard let model = model else { return }
            
            let page = self.previewView.currentPage
            let size =  model.paper.info.size
            
            if page != nil {
                let pageIndex = self.previewView.document?.index(for: page ?? PDFPage())
                self.currentPageTextField.stringValue = (pageIndex! + 1).description
                self.pageCountLabel.stringValue = (self.previewView.document?.pageCount.description)!
                
                self.titleLabel.stringValue = NSLocalizedString("Size", comment: "") + ":" + size.width.description + NSLocalizedString("mm", comment: "") + "*" + String(size.height.description) + NSLocalizedString("mm", comment: "")
            }
        }
    }
    
    //MARK: 通知
    @objc func PDFViewDocumentChangedNotification(_ notification: Notification) -> Void {
//        self.reloadData()
    }
}

protocol KMPrintPreviewViewAction { }
extension KMPrintPreviewView: KMPrintPreviewViewAction {
    @IBAction func nextButton(_ sender: NSButton) {
        self.presenter.nextPage()
    }
    
    @IBAction func previousAction(_ sender: NSButton) {
        self.presenter.previousPage()
    }
    
    func toPageIndex(_ index: UInt = 0) {
        self.presenter.toPage(index: Int(index))
    }
}

extension KMPrintPreviewView: KMPrintPreviewPresenterDelegate {
    func dataDidChange(presenter: KMPrintPreviewPresenter, view: PDFView) {
        self.reloadData()
    }
    
    func documentDidChange(presenter: KMPrintPreviewPresenter, document: PDFDocument) {
        self.previewView.document = document
        self.reloadData()
    }
}

extension KMPrintPreviewView {
    func updatePosterPreView() {
        guard let model = model else { return }
        if model.page.operation.type == .poster {
            var size = self.previewView.frame.size
            let rect = self.previewView.currentPage?.bounds(for: .cropBox)
            let scale = self.previewView.scaleFactor
            let offest = NSMakePoint((rect?.origin.x)! * scale, (rect?.origin.y)! * scale)
            size = NSMakeSize(rect!.size.width * scale, rect!.size.height * scale)
            
            var point = CGPoint(x: 1, y: 1)
            if model.page.operation.poster.type == .tile {
                point = model.page.operation.poster.tilePoint
            } else {
                point = model.page.operation.pageOfPaper.point
            }

            var horizontals: [Int] = []
            var verticals: [Int] = []
            
            let pointX: Int = Int(point.x)
            let pointY: Int = Int(point.y)
            for i in 0..<pointX {
                if i != 0 {
                    horizontals.append(Int(size.width) * i / (pointX) + Int(offest.x))
                }
            }
            
            for i in 0..<pointY {
                if i != 0 {
                    verticals.append(Int(size.height) * i / (pointY) + Int(offest.y))
                }
            }
            
            self.posterPreView.horizontals = horizontals
            self.posterPreView.verticals = verticals
    //        self.posterPreView.spaceWidth = spaceWidth
    //        self.posterPreView.spaceHeight = spaceHeight
            self.posterPreView.scale = 1
            self.posterPreView.needsDisplay = true
            
            if model.page.range.reversePrintOrder != reversePrintOrder {
                reversePrintOrder = model.page.range.reversePrintOrder
//                guard let url = self.previewView.document?.documentURL else { return }
                guard let pdfDocument = self.previewView.document else { return }
                
//                if model.page.range.reversePrintOrder {
                    // 逆序排列页面
                    let pageCount = pdfDocument.pageCount
                    let reversedPDFDocument = PDFDocument()
                    for pageIndex in (0..<pageCount).reversed() {
                        if let page = pdfDocument.page(at: pageIndex) {
                            reversedPDFDocument.insert(page, at: reversedPDFDocument.pageCount)
                        }
                    }
                    self.previewView.document = reversedPDFDocument
//                } else {
//                    self.previewView.document = pdfDocument
//                }
            }
        }
    }
}