//
//  KMPDFEditInsertBlankPageWindow.swift
//  PDF Reader Pro
//
//  Created by tangchao on 2023/11/13.
//

import Cocoa

class KMPDFEditInsertBlankPageWindow: NSWindowController {
    var currentPage: Int = 1
    var insertLocation: Int = 0
    
    @IBOutlet var progress: NSProgressIndicator!
    @IBOutlet var pageCountLabel: NSTextField!
    @IBOutlet var pageSizeLabel: NSTextField!
    @IBOutlet var currentSizeButton: NSButton!
    @IBOutlet var standardButton: NSButton!
    @IBOutlet var customButton: NSButton!
    @IBOutlet var standardComboBox: NSComboBox!
    @IBOutlet var pageWidthTextField: NSTextField!
    @IBOutlet var pageHeightTextField: NSTextField!
    @IBOutlet var companyComboBox: NSComboBox!
    @IBOutlet var orientationLabel: NSTextField!
    @IBOutlet var portraitButton: NSButton!
    @IBOutlet var landscapeButton: NSButton!
    @IBOutlet var positionLabel: NSTextField!
    @IBOutlet var firstButton: NSButton!
    @IBOutlet var lastButton: NSButton!
    @IBOutlet var pageButton: NSButton!
    @IBOutlet var pageTextField: NSTextField!
    @IBOutlet var locationRangePopUpButton: NSPopUpButton!
    @IBOutlet var cancelButton: NSButton!
    @IBOutlet var insertButton: NSButton!
    @IBOutlet var byPageStepper: NSStepper!
    
    var pdfDocument: CPDFDocument?
    
    var insertPages: [CPDFPage] = []
    private var _password: String?
    private var _lastString: String = ""
    private var _insertPageIndex: Int = 0
    var callback: ((CPDFDocument?, String?, [CPDFPage]?, Int) -> Void)?
    
    var pageSize: NSSize = .zero
    var pageRotation: CGFloat = 0
    
    deinit {
        KMPrint("KMPDFEditInsertBlankPageWindow deinit.")
    }
    convenience init(document: CPDFDocument) {
        self.init(windowNibName: "KMPDFEditInsertBlankPageWindow")
        
        //        self.type = KMPDFEditPageEdit;
        self.pdfDocument = document;
    }
    
    convenience init(fileURL documentPath: URL) {
        self.init(windowNibName: "KMPDFEditInsertBlankPageWindow")
        
        //        self.type = KMPDFEditManagement;
        self.currentPage = 1
        self.pdfDocument = CPDFDocument(url: documentPath)
    }
    
    override func windowDidLoad() {
        super.windowDidLoad()
    
        self.insertPages = []
      
        self.progress.isHidden = true
        self.pageTextField.isEditable = false
        
        let paperArray = KMPageSizeTool.paperSize()
        self.standardComboBox.addItems(withObjectValues: paperArray)
        self.standardComboBox.selectItem(at: 1)
        self.companyComboBox.selectItem(at: 0)
        self.standardComboBox.isEditable = false
        self.companyComboBox.isEditable = false
        
        self.firstButton.title = KMLocalizedString("First", nil)
        self.lastButton.title = KMLocalizedString("Last", nil)
        self.pageButton.title = KMLocalizedString("Page", nil)
        self.portraitButton.title = KMLocalizedString("Portrait Pages", nil)
        self.landscapeButton.title = KMLocalizedString("Landscape Pages", nil)
        self.standardButton.title = KMLocalizedString("Standard", nil)
        self.customButton.title = KMLocalizedString("Custom", nil)
        self.orientationLabel.stringValue = KMLocalizedString("Orientation", nil)
        self.cancelButton.title = KMLocalizedString("Cancel", nil)
        
        self.insertButton.title = KMLocalizedString("Insert", nil)
        self.positionLabel.stringValue = KMLocalizedString("Position", nil)
        self.pageSizeLabel.stringValue = KMLocalizedString("Page Size", nil)
        self.currentSizeButton.state = .on
        self.portraitButton.state = .on
        self.standardComboBox.isEnabled = false
        self.pageWidthTextField.isEnabled = false
        self.pageHeightTextField.isEnabled = false
        self.companyComboBox.isEnabled = false
        
        self.pageTextField.formatter = TextFieldFormatter()
        self.pageTextField.delegate = self
            
        let menu = NSMenu()
        _ = menu.addItem(title: KMLocalizedString("After", nil), action: #selector(after_Action), target: self)
        _ = menu.addItem(title: KMLocalizedString("Before", nil), action: #selector(before_Action), target: self)
        self.locationRangePopUpButton.menu = menu
        self.locationRangePopUpButton.isEnabled = false
        
        if let data = self.pdfDocument?.isLocked, data {
            DispatchQueue.main.asyncAfter(deadline: .now()+0.5) {

            }
        } else {
            self.byPageStepper.minValue = 1.0
            self.byPageStepper.maxValue = Double(self.pdfDocument?.pageCount ?? 0)
            
            self.pageCountLabel.stringValue = String(format: "/%ld", self.pdfDocument?.pageCount ?? 0)
        }
        
        if (self.insertLocation == 2) {
            self.lastButton.state = .on
        } else if (self.insertLocation == 3) {
            self.pageButton.state = .on
            self.locationRangePopUpButton.isEnabled = true
            self.pageTextField.isEditable = true
            self.byPageStepper.isEnabled = true
        } else {
            self.firstButton.state = .on
        }
        
        self.pageTextField.stringValue = String(format: "%ld", self.currentPage)
        self.byPageStepper.integerValue = Int(self.pageTextField.stringValue) ?? 0
        let tSize = KMPageSizeTool.getPaperSize(paperName:self.standardComboBox.stringValue)
        self.pageWidthTextField.stringValue = KMPageSizeTool.conversion(withUnit: self.companyComboBox.stringValue, value: tSize.width)
        self.pageHeightTextField.stringValue = KMPageSizeTool.conversion(withUnit: self.companyComboBox.stringValue, value: tSize.height)
        self.standardComboBox.stringValue = String(format: "%@(%@ x %@mm)", KMLocalizedString("A4", nil),"210","297")
        self._lastString = "mm"
        
        let page = self.pdfDocument?.page(at: UInt(self.currentPage-1)) as? CPDFPage
        let rect = page?.bounds(for: .mediaBox) ?? .zero
        let width = KMPageSizeTool.conversion(withUnit: "mm", value: (NSWidth(rect)/595 * 210))
        let height = KMPageSizeTool.conversion(withUnit: "mm", value: (NSHeight(rect)/842 * 297))
        self.currentSizeButton.title = String(format: "%@(%@ x %@mm)", KMLocalizedString("Current Size", nil),width,height)
    }
    
    @IBAction func byPageStepperAction(_ sender: AnyObject?) {
        self.pageTextField.stringValue = String(format: "%ld", self.byPageStepper.integerValue)
    }
    
    @IBAction func buttonItemClicked_Location(_ sender: AnyObject?) {
        if (self.pageButton.isEqual(to: sender)) {
            self.pageTextField.isEditable = true
            self.locationRangePopUpButton.isEnabled = true
            self.byPageStepper.isEnabled = true
        } else{
            self.pageTextField.isEditable = false
            self.locationRangePopUpButton.isEnabled = false
            self.byPageStepper.isEnabled = false
        }
    }
    
    @IBAction func buttonItenClicked_Size(_ sender: NSButton?) {
        self.currentSizeButton.state = .off
        self.standardButton.state = .off
        self.customButton.state = .off
        sender?.state = .on
        if(sender == self.currentSizeButton) {
            self.standardComboBox.isEnabled = false
            self.pageWidthTextField.isEnabled = false
            self.pageHeightTextField.isEnabled = false
            self.companyComboBox.isEnabled = false
        } else if (sender == self.standardButton) {
            self.standardComboBox.isEnabled = true
            self.pageWidthTextField.isEnabled = false
            self.pageHeightTextField.isEnabled = false
            self.companyComboBox.isEnabled = false
        } else if (sender == self.customButton) {
            self.standardComboBox.isEnabled = false
            self.pageWidthTextField.isEnabled = true
            self.pageHeightTextField.isEnabled = true
            self.companyComboBox.isEnabled = true
        }
    }
    
    @IBAction func buttonItemClicked_Orientation(_ sender: NSButton?) {
        self.portraitButton.state = .off
        self.landscapeButton.state = .off
        sender?.state = .on
        var width = self.pageWidthTextField.stringValue
        var height = self.pageHeightTextField.stringValue
        if(self.pageWidthTextField.stringValue.stringToCGFloat() > self.pageHeightTextField.floatValue.cgFloat) {
            width = self.pageHeightTextField.stringValue
            height =  self.pageWidthTextField.stringValue
        }
        if(self.portraitButton.state == .on) {
            self.pageWidthTextField.stringValue = width
            self.pageHeightTextField.stringValue = height
        } else {
            self.pageWidthTextField.stringValue = height
            self.pageHeightTextField.stringValue = width
        }
    }
    
    @IBAction func buttonItemClicked_Cancel(_ sender: AnyObject?) {
        self.pdfDocument = nil
        guard let block = self.callback else {
            return
        }
        block(self.pdfDocument, nil, nil, 0)
    }
    
    @IBAction func comboBoxItemClick_SplitSize(_ sender: AnyObject?) {
        if (self.standardComboBox.indexOfSelectedItem > self.standardComboBox.objectValues.count) {
            return
        }
        self.pageWidthTextField.isEnabled = false
        self.pageHeightTextField.isEnabled = false
        let size = self.standardComboBox.objectValues[self.standardComboBox.indexOfSelectedItem] as? String ?? ""
        let tSize = KMPageSizeTool.getPaperSize(paperName:size)
        let width = KMPageSizeTool.conversion(withUnit: "mm", value: tSize.width)
        let height = KMPageSizeTool.conversion(withUnit: "mm", value: tSize.height)
        self.standardComboBox.stringValue = String(format: "%@(%@ x %@mm)", size,width,height)
    }
    
    @IBAction func comboBoxItemClick_customSize(_ sender: AnyObject?) {
        let height = self.pageHeightTextField.stringValue.stringToCGFloat()
        let width = self.pageWidthTextField.stringValue.stringToCGFloat()
        self.pageWidthTextField.stringValue = KMPageSizeTool.conversion(with: self.companyComboBox.stringValue, from: self._lastString, value: width)
        self.pageHeightTextField.stringValue = KMPageSizeTool.conversion(with: self.companyComboBox.stringValue, from: self._lastString, value: height)
        self._lastString = self.companyComboBox.stringValue
    }
    
    @IBAction func buttonItemClicked_Insert(_ sender: AnyObject?) {
        self.window?.makeFirstResponder(nil)
        var pages: [CPDFPage] = []
        var height: CGFloat = 0
        var width: CGFloat = 0
        if(self.currentSizeButton.state == .on) {
            let page = self.pdfDocument?.page(at: UInt(self.currentPage-1)) as? CPDFPage
            let rect = page?.bounds(for: .mediaBox) ?? .zero
            let w = KMPageSizeTool.conversion(withUnit: "mm", value: (NSWidth(rect)/595 * 210))
            let h = KMPageSizeTool.conversion(withUnit: "mm", value: (NSHeight(rect)/842 * 297))
            width = w.stringToCGFloat()
            height = h.stringToCGFloat()
        } else if self.standardButton.state == .on {
            var selectedItem = self.standardComboBox.indexOfSelectedItem
            if (selectedItem < 0 || selectedItem > self.standardComboBox.objectValues.count) {
                let string = self.standardComboBox.stringValue
                var size: String? = nil
                for (i, obj) in self.standardComboBox.objectValues.enumerated() {
                    if string.contains(obj as? String ?? "") {
                        selectedItem = i
                        size = obj as? String
                        break
                    }
                }
                guard let _ = size else {
                    return
                }
            }
            let size = self.standardComboBox.objectValues[selectedItem] as? String ?? ""
            let tSize = KMPageSizeTool.getPaperSize(paperName: size)
            width = KMPageSizeTool.conversion(withUnit: "mm", value: tSize.width).stringToCGFloat()
            height = KMPageSizeTool.conversion(withUnit: "mm", value: tSize.height).stringToCGFloat()
        } else if (self.customButton.state == .on) {
            height = self.pageHeightTextField.floatValue.cgFloat
            width = self.pageWidthTextField.floatValue.cgFloat
            width = KMPageSizeTool.conversion(with: "mm", from: self.companyComboBox.stringValue, value: width).stringToCGFloat()
            height = KMPageSizeTool.conversion(with: "mm", from: self.companyComboBox.stringValue, value: height).stringToCGFloat()
            if(!(width > 0 && height > 0)) {
                let alert = NSAlert()
                alert.alertStyle = .critical
                alert.messageText = KMLocalizedString("Please enter the correct size.", nil)
                alert.runModal()
                return
            }
        }

        var page = CPDFPage()
        page.setBounds(NSMakeRect(0, 0, width * 595 / 210, height * 842 / 297), for: .mediaBox)
        self.pageSize = NSMakeSize(width * 595 / 210, height * 842 / 297)
        if(self.landscapeButton.state == .on && self.customButton.state == .off) {
            page.rotation = 90
            self.pageRotation = 90
        } else {
            if self.customButton.state == .on && self.landscapeButton.state == .on {
                self.pageRotation = 90
            }
        }
        pages.append(page)

        var index = 0
        if (self.firstButton.state == .on) {
            index = 0
        } else if (self.lastButton.state == .on) {
            index =  Int(self.pdfDocument?.pageCount ?? 0)
        } else {
            index = Int(self.pageTextField.stringValue) ?? 0
            if ((1 == self.locationRangePopUpButton.indexOfSelectedItem)) {
                index = index - 1
            }
        }

        for page in pages {
            self.insertPages.append(page)
        }
        self._insertPageIndex = index
        guard let block = self.callback else {
            return
        }
        block(self.pdfDocument, self._password, self.insertPages, self._insertPageIndex)
    }
    
    @IBAction func after_Action(_ sender: AnyObject?) {
        
    }
    
    @IBAction func before_Action(_ sender: AnyObject?) {
        
    }
}

extension KMPDFEditInsertBlankPageWindow: NSTextFieldDelegate {
    func controlTextDidChange(_ obj: Notification) {
        let textField = obj.object as? NSTextField
        if (textField == self.pageTextField) {
            if let sValue = Int(textField!.stringValue), sValue <= 0 {
                self.pageTextField.stringValue = "1"
                self.byPageStepper.integerValue = 1
                
            } else if let sValue = Double(textField!.stringValue), sValue > self.byPageStepper.maxValue {
                self.pageTextField.stringValue = String(format: "%.0f", self.byPageStepper.maxValue)
                self.byPageStepper.doubleValue = self.byPageStepper.maxValue
            } else {
                self.byPageStepper.integerValue = Int(self.pageTextField.stringValue) ?? 0
            }
        } else if (textField == self.pageWidthTextField) {
            if let fValue = textField?.floatValue, fValue > self.pageHeightTextField.floatValue {
                self.portraitButton.state = .off
                self.landscapeButton.state = .on
            } else {
                self.portraitButton.state = .on
                self.landscapeButton.state = .off
            }
        } else if (textField == self.pageHeightTextField) {
            if let fValue = textField?.floatValue, fValue > self.pageWidthTextField.floatValue {
                self.portraitButton.state = .on
                self.landscapeButton.state = .off
            } else {
                self.portraitButton.state = .off
                self.landscapeButton.state = .on
            }
        }
    }
}