//
//  KMHomePopViewController.swift
//  PDF Reader Pro
//
//  Created by wanjun on 2022/10/17.
//

import Cocoa

typealias popCellViewDownCallback = (_ downEntered: Bool, _ count: String) -> Void
typealias popCellViewWillShow = (_ cellView: KMBox, _ index: Int) -> Void

@objcMembers class KMHomePopViewController: NSViewController {
    @IBOutlet weak var customBox: NSBox!
    @IBOutlet weak var customBoxWidthLayoutConstraint: NSLayoutConstraint!
    @IBOutlet weak var customBoxHeightLayoutConstraint: NSLayoutConstraint!
    
    var downCallback: popCellViewDownCallback?
    var viewWillShow: popCellViewWillShow?
    var popCellViewDownString: String?
    var popCellCount: Int?
    var dataArr: [String]?
    var KMHorizontalLine: String = "KMHorizontalLine"
    
    var enterFillColor          : NSColor = KMDesignToken.shared.fill(withToken: "dropdown.m.bg.hov")
    var textColor               : NSColor = .black  // 背景颜色
    var background              : NSColor = .white  // 背景颜色
    var background_hov          : NSColor = .clear  // 背景颜色
    var background_sel          : NSColor = .clear  // 背景颜色
    var background_disabled     : NSColor = .clear  // 背景颜色
    var cornerRadius            : Float = 0.0   // 边框圆角
    var cornerRadius_hov        : Float = 0.0   // 边框圆角
    var cornerRadius_sel        : Float = 0.0   // 边框圆角
    var cornerRadius_disabled   : Float = 0.0   // 边框圆角
    var lineHeight              : CGFloat = 20.0    // 默认 内容行高
    var lineHeight_hov          : CGFloat = 20.0    // 默认 内容行高
    var lineHeight_sel          : CGFloat = 20.0    // 默认 内容行高
    var lineHeight_disabled     : CGFloat = 20.0    // 默认 内容行高
    var font                    : NSFont = NSFont.systemFont(ofSize: 14.0) // 内容字体
    var font_hov                : NSFont = NSFont.systemFont(ofSize: 14.0) // 内容字体
    var font_sel                : NSFont = NSFont.systemFont(ofSize: 14.0) // 内容字体
    var font_disabled           : NSFont = NSFont.systemFont(ofSize: 14.0) // 内容字体

    var _state: KMDesignTokenState = .Norm
    var enabled: Bool = true // 是否可点击
    var canHover: Bool = true // 是否可悬浮
    var disItems: [String] = []
    var selectedItems: [String] = []
    
    var showVerticalScroller: Bool = false
    
    func initWithPopViewDataArr(_ popViewDataArr: [String]) -> Self {
//        self.dataArr = popViewDataArr.reverseObjectEnumerator().allObjects as NSArray
        self.dataArr = popViewDataArr.reversed()
        return self
    }
    
    override func viewDidLoad() {
        super.viewDidLoad()
            
        customBox.fillColor = background//NSColor.km_init(hex: "#FFFFFF")

//        self.updateUI()
    }
    
    override func viewDidAppear() {
        super.viewDidAppear()
        self.updateUI()

    }
    
    // MARK: Private
    
    func updateUI() {
        customBox.fillColor = background
        
        var widthMax: Float = 0;
        let subViews: [NSView] = self.customBox.contentView!.subviews
        for subView in subViews {
            subView.removeFromSuperview()
        }
        for string in self.dataArr ?? []  {
            if !(string as AnyObject).isEqual(to: KMHorizontalLine) {
                let width = self.cellContentAdaptiveWidth(string)
                if widthMax < width {
                    widthMax = width
                }
            }
        }
        var formTopFloat: Float = 4.0
//        for i in (0..<dataArr!.count).reversed() {
        for string in dataArr?.reversed() ?? [] {
            if (string as AnyObject).isEqual(to: KMHorizontalLine) {
                self.createHonrizontalLineWithFrame(CGRect(x: 12.0, y: CGFloat(formTopFloat), width: CGFloat(widthMax)+23, height: 11))
                formTopFloat += 11
            } else {
                popCellViewDownString = string
//                self.createPopViewCellLabelWithFrame(CGRect(x: 4.0, y: CGFloat(formTopFloat), width: CGFloat(widthMax)+47, height: 32), stringValue: string)
                createPopViewCellLabelWithFrame(formTopFloat, stringValue: string)
                formTopFloat += 32;
            }
        }
        
        customBoxWidthLayoutConstraint.constant = CGFloat(widthMax+47)
        customBoxHeightLayoutConstraint.constant = CGFloat(formTopFloat+4.0)
    }
    
    func createHonrizontalLineWithFrame(_ frame: CGRect) {
        let box: NSBox = NSBox.init(frame: frame)
        box.boxType = .custom
        box.borderWidth = 0.0
        box.contentViewMargins = NSMakeSize(0, 0)
        customBox.contentView?.addSubview(box)
        box.mas_makeConstraints { (make) in
            make?.leading.equalTo()(frame.origin.x)
            make?.trailing.equalTo()(-frame.origin.x)
            make?.height.equalTo()(frame.size.height)
            make?.top.equalTo()(customBox.mas_top)?.offset()(CGFloat(frame.origin.y))
        }
        
        let lineBox = NSBox.init(frame: CGRect(x: 0, y: 6, width: frame.width, height: 1))
        lineBox.boxType = .separator
        box.addSubview(lineBox)
    }
    
//    func createPopViewCellLabelWithFrame(_ frame: CGRect, stringValue: String) {
//        let box: KMBox = KMBox(frame: frame)
//        box.boxType = .custom
//        box.borderWidth = 0.0
//        box.contentViewMargins = NSMakeSize(0, 0)
//        customBox.contentView?.addSubview(box)
//
//        let boxLabel: NSTextField = NSTextField.init()
//        boxLabel.isEditable = false
//        boxLabel.isBordered = false
//        boxLabel.stringValue = stringValue
//        boxLabel.font = NSFont.systemFont(ofSize: 14.0)
//        boxLabel.translatesAutoresizingMaskIntoConstraints = false
//        boxLabel.backgroundColor = NSColor.clear
//        boxLabel.textColor = NSColor.labelColor
//        box.contentView?.addSubview(boxLabel)
//
//        box.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "H:|-21-[boxLabel]-21-|", metrics: nil, views:["boxLabel": boxLabel]))
//        box.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "V:|-1-[boxLabel]-1-|", metrics: nil, views:["boxLabel": boxLabel]))
//
//        box.contentView?.addConstraint(NSLayoutConstraint(item: boxLabel, attribute:.centerY , relatedBy: .equal, toItem: box.contentView, attribute: .centerY, multiplier: 1, constant: 0))
//        box.moveCallback =  {(mouseEntered: Bool, mouseBox: KMBox) -> Void in
//            if mouseEntered {
//                if #available(macOS 10.14, *) {
//                    box.fillColor = NSColor.controlAccentColor
//                    boxLabel.textColor = NSColor.white
//                } else {
//                    box.fillColor = NSColor.init(red: 71/255.0, green: 126/255.0, blue: 222/255.0, alpha: 1.0)
//                    boxLabel.textColor = NSColor.white
//                }
//            } else {
//                box.fillColor = NSColor.clear
//                boxLabel.textColor = NSColor.labelColor
//            }
//        }
//        box.downCallback = {(downEntered: Bool, mouseBox: KMBox) -> Void in
//            if downEntered {
//                if let callback = self.downCallback {
//                    callback(true, stringValue)
//                }
//            }
//        }
//    }
    
    func createPopViewCellLabelWithFrame(_ mas_top: Float, stringValue: String) {
        var isDisabled = false
        if disItems.contains(stringValue) {
            isDisabled = true
        }
        var isSelected = false
        if (isDisabled == false && self.selectedItems.contains(stringValue)) {
            isSelected = true
        }
        let box: KMBox = KMBox(frame: NSZeroRect)
        box.boxType = .custom
        box.borderWidth = 0.0
        box.contentViewMargins = NSMakeSize(0, 0)
        box.cornerRadius = 4.0
        customBox.contentView?.addSubview(box)
        box.mas_makeConstraints { (make) in
            make?.leading.equalTo()(4.0)
            make?.trailing.equalTo()(-4.0)
            make?.height.equalTo()(32.0)
            make?.top.equalTo()(customBox.mas_top)?.offset()(CGFloat(mas_top))
        }
        
//        let dropdownVC = KMDesignDropdown.init(nibName: "KMDesignDropdown", bundle: nil)
//        box.contentView = dropdownVC.view
//        dropdownVC.dropdown(bg: "dropdown.m.bg.norm", text: "dropdown.m.mac-text.def")
//        dropdownVC.dropdown(bg: "dropdown.m.bg.hov", text: "dropdown.m.mac-text.def", state: .Hov)
//        dropdownVC.dropdown(bg: "dropdown.m.bg.sel", text: "dropdown.m.mac-text.sel", state: .Sel)
//        dropdownVC.dropdown(bg: "dropdown.m.bg.dis", text: "dropdown.m.mac-text.dis", state: .Disabled)
//        dropdownVC.stringValue = str


     

        let boxLabel: NSTextField = NSTextField.init()
        boxLabel.isEditable = false
        boxLabel.isBordered = false
        boxLabel.stringValue = stringValue
        boxLabel.font = NSFont.systemFont(ofSize: 14.0)
        boxLabel.translatesAutoresizingMaskIntoConstraints = false
        boxLabel.backgroundColor = NSColor.clear
        boxLabel.textColor = textColor//NSColor.km_init(hex: "#252629")
        box.contentView?.addSubview(boxLabel)
        boxLabel.mas_makeConstraints { (make) in
            make?.centerY.equalTo()(0.0)
            make?.leading.equalTo()(8.0)
        }
        let textTypography = KMDesignToken.shared.typography(withToken: "dropdown.m.mac-text.def")
        var fontFamily: String = textTypography.fontFamily
        let fontWeight: String = textTypography.fontWeight
        if fontFamily.contains(" ") {
            fontFamily = fontFamily.replacingOccurrences(of: " ", with: "")
        }
        if fontWeight != "" {
            fontFamily = String(format: "%@-%@", fontFamily, fontWeight)
        }
        boxLabel.font = NSFont(name: fontFamily, size: textTypography.fontSize.stringToCGFloat()) ?? NSFont.systemFont(ofSize: textTypography.fontSize.stringToCGFloat())
        let paragraphStyle = NSMutableParagraphStyle()
        paragraphStyle.lineSpacing = textTypography.lineHeight.stringToCGFloat()
        boxLabel.attributedStringValue = NSAttributedString(string: stringValue, attributes: [NSAttributedString.Key.paragraphStyle: paragraphStyle])
        
        box.moveCallback =  {(mouseEntered: Bool, mouseBox: KMBox) -> Void in
            if !isDisabled {
                if isSelected { // 选中没有 hover 效果
                    return
                }
                if mouseEntered {
                    mouseBox.fillColor = self.enterFillColor
                } else {
                    mouseBox.fillColor = NSColor.clear
                }
            }
        }
        box.downCallback = {(downEntered, mouseBox, event) -> Void in
            if !isDisabled {
                if downEntered {
                    mouseBox.fillColor = KMDesignToken.shared.fill(withToken: "dropdown.m.bg.sel")
                    boxLabel.textColor = KMDesignToken.shared.fill(withToken: "dropdown.m.mac-text.sel")
                    if let callback = self.downCallback {
                        callback(true, stringValue)
                    }
                } else {
                    mouseBox.fillColor = KMDesignToken.shared.fill(withToken: "dropdown.m.bg.norm")
                    boxLabel.textColor = KMDesignToken.shared.fill(withToken: "dropdown.m.mac-text.def")
                }
            }
        }
        if isDisabled {
            box.fillColor = KMDesignToken.shared.fill(withToken: "dropdown.m.bg.dis")
            boxLabel.textColor = KMDesignToken.shared.fill(withToken: "dropdown.m.mac-text.dis")
        } else if (isSelected) {
            box.fillColor = KMDesignToken.shared.fill(withToken: "dropdown.m.bg.sel")
            boxLabel.textColor = KMDesignToken.shared.fill(withToken: "dropdown.m.mac-text.sel")
        }
        
        let idx = self.dataArr?.index(of: stringValue) ?? 0
        self.viewWillShow?(box, idx)
    }
    
    func cellContentAdaptiveWidth(_ content: String) -> Float {
        if content.isEmpty {
            return 0
        }
        let attributes = [NSAttributedString.Key.font : NSFont.systemFont(ofSize: 14.0)]
        let rect : CGRect = content.boundingRect(with: CGSize(width: 0, height: 18),options: .usesLineFragmentOrigin, attributes: attributes,context:nil)
        return Float(rect.size.width)
    }
    
    func changePopViewCellData(_ count: Int, content: String) {
        let boxArray: Array<NSView> = customBox.contentView!.subviews
        for subView in boxArray {
            subView.removeFromSuperview()
        }
        
        var dataMutableArr: [String] = Array((dataArr?.reversed())!)
        dataMutableArr[count] = content
        
        dataArr = Array(dataMutableArr.reversed())
        self.updateUI()
    }
    
    // MARK: - Init Views
    
    fileprivate func initBoxLabel() -> NSTextField {
        let label = NSTextField.init()
        label.isEditable = false
        label.isBordered = false
        label.font = NSFont.systemFont(ofSize: 14.0)
        label.translatesAutoresizingMaskIntoConstraints = false
        label.backgroundColor = NSColor.clear
        label.textColor = NSColor.km_init(hex: "#252629")
        return label
    }
}

class KMScrollPopViewController: KMHomePopViewController {
    private var scrollView = NSScrollView()
    private var contentView = NSView()
    
    private var currentItemPosition: NSPoint = .zero
    
    convenience init() {
        self.init(nibName: "KMHomePopViewController", bundle: nil)
    }
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        self.view.addSubview(self.scrollView)
        self.scrollView.documentView = self.contentView
        
//        self.scrollView.documentView?.backgroundColor(NSColor.km_init(hex: "#FFFFFF"))
//        customBox.fillColor = NSColor.km_init(hex: "#FFFFFF")
        self.scrollView.documentView?.backgroundColor(self.background)
        self.scrollView.hasVerticalScroller = self.showVerticalScroller
        
        self.scrollView.borderType = .noBorder
        self.scrollView.drawsBackground = false
    }
    
    override func viewDidAppear() {
        super.viewDidAppear()
        
        DispatchQueue.main.async {
            let contentView = self.scrollView.contentView
            let pageH = NSHeight(self.scrollView.bounds)
//            KMPrint(NSHeight(self.contentView.bounds))
//            KMPrint(pageH)
//            KMPrint(self.currentItemPosition)

            var numberPages: Int = 0
            var currentPage: Int = 0
            var scrollY: CGFloat = 0
            if (pageH > 0) {
                numberPages = Int(NSHeight(self.contentView.bounds) / pageH) + 1
                currentPage = Int((self.currentItemPosition.y + 32 + 4 * 2) / pageH)
//                KMPrint(numberPages)
//                KMPrint(currentPage)
                
//                let _currentPage = numberPages - currentPage - 1
//                KMPrint(_currentPage)
                if (currentPage == (numberPages - 1)) {
                    scrollY = 0
                } else {
                    scrollY = NSHeight(self.contentView.bounds) - pageH * CGFloat(currentPage+1)
                }
            }
            
//            KMPrint(scrollY)
            contentView.scroll(to: NSPoint(x: 0, y: scrollY))
        }
    }
    
    override func viewDidLayout() {
        super.viewDidLayout()
        
        self.scrollView.frame = NSMakeRect(0, 0, NSWidth(self.view.frame), NSHeight(self.view.window!.frame))
        self.contentView.frame = NSMakeRect(0, 0, NSWidth(self.customBox.frame), NSHeight(self.customBox.frame)+30)
//        self.contentView.frame = self.customBox.bounds
    }
    
    override func updateUI() {
        customBox.fillColor = background
        
        var widthMax: Float = 0
        for subView in self.contentView.subviews {
            subView.removeFromSuperview()
        }
        for string in self.dataArr ?? []  {
            if ((string as AnyObject).isEqual(to: KMHorizontalLine)) {
                continue
            }
            let width = self.cellContentAdaptiveWidth(string)
            if (widthMax < width) {
                widthMax = width
            }
        }
        var formTopFloat: Float = 4.0
        for string in dataArr?.reversed() ?? [] {
            if (string as AnyObject).isEqual(to: KMHorizontalLine) {
                self.createHonrizontalLineWithFrame(CGRect(x: 12.0, y: CGFloat(formTopFloat), width: CGFloat(widthMax)+23, height: 11))
                formTopFloat += 11
            } else {
                self.popCellViewDownString = string
                self.createPopViewCellLabelWithFrame(formTopFloat, stringValue: string)
                formTopFloat += 32
            }
        }
        
        self.customBoxWidthLayoutConstraint.constant = CGFloat(widthMax+47)
        self.customBoxHeightLayoutConstraint.constant = CGFloat(formTopFloat+4.0)
    }
    
    override func createHonrizontalLineWithFrame(_ frame: CGRect) {
        let box: NSBox = NSBox.init(frame: frame)
        box.boxType = .custom
        box.borderWidth = 0.0
        box.contentViewMargins = NSMakeSize(0, 0)
        self.contentView.addSubview(box)
        
        let lineBox = NSBox.init(frame: CGRect(x: 0, y: 6, width: frame.width, height: 1))
        lineBox.boxType = .separator
        box.addSubview(lineBox)
    }
    
    override func createPopViewCellLabelWithFrame(_ mas_top: Float, stringValue: String) {
        var isDisabled = false
        if (self.disItems.contains(stringValue)) {
            isDisabled = true
        }
        var isSelected = false
        if (isDisabled == false && self.selectedItems.contains(stringValue)) {
            isSelected = true
        }
        
        if (isSelected && self.selectedItems.first == stringValue) {
            self.currentItemPosition = NSPoint(x: 0, y: Int(mas_top))
        }
        
        let box: KMBox = KMBox(frame: NSZeroRect)
        box.boxType = .custom
        box.borderWidth = 0.0
        box.contentViewMargins = NSMakeSize(0, 0)
        box.cornerRadius = 4.0
        self.contentView.addSubview(box)
        box.mas_makeConstraints { (make) in
            make?.leading.equalTo()(4.0)
            make?.trailing.equalTo()(-4.0)
            make?.height.equalTo()(32.0)
            make?.top.equalTo()(self.customBox.mas_top)?.offset()(CGFloat(mas_top))
        }
        
        let boxLabel = self.initBoxLabel()
        boxLabel.stringValue = stringValue
        box.contentView?.addSubview(boxLabel)
        boxLabel.mas_makeConstraints { (make) in
            make?.centerY.equalTo()(0.0)
            make?.leading.equalTo()(8.0)
            make?.trailing.mas_equalTo()(0)
        }
        let textTypography = KMDesignToken.shared.typography(withToken: "dropdown.m.mac-text.def")
        var fontFamily: String = textTypography.fontFamily
        let fontWeight: String = textTypography.fontWeight
        if (fontFamily.contains(" ")) {
            fontFamily = fontFamily.replacingOccurrences(of: " ", with: "")
        }
        if (fontWeight != "") {
            fontFamily = String(format: "%@-%@", fontFamily, fontWeight)
        }
        
        if NSFont(name: stringValue, size: 12) != nil {
            fontFamily = stringValue
        } else {
            debugPrint("不支持字体" + stringValue)
        }
        
        if stringValue == "Al Tarikh" ||
            stringValue == "Corsiva Hebrew" ||
            stringValue == "DIN Condensed" ||
            stringValue == "Damascus" {
//            boxLabel.font = NSFont.systemFont(ofSize: 14)
//            boxLabel.stringValue = stringValue
            boxLabel.attributedStringValue = NSAttributedString(string: stringValue, attributes: [NSAttributedString.Key.font : NSFont.systemFont(ofSize: 14)])
        } else {
            boxLabel.font = NSFont(name: fontFamily, size: textTypography.fontSize.stringToCGFloat()) ?? NSFont.systemFont(ofSize: textTypography.fontSize.stringToCGFloat())
            let paragraphStyle = NSMutableParagraphStyle()
            paragraphStyle.lineSpacing = textTypography.lineHeight.stringToCGFloat()
            boxLabel.attributedStringValue = NSAttributedString(string: stringValue, attributes: [NSAttributedString.Key.paragraphStyle: paragraphStyle])
        }
        
        if (isDisabled) {
            box.fillColor = KMDesignToken.shared.fill(withToken: "dropdown.m.bg.dis")
            boxLabel.textColor = KMDesignToken.shared.fill(withToken: "dropdown.m.mac-text.dis")
        } else if (isSelected) {
            box.fillColor = KMDesignToken.shared.fill(withToken: "dropdown.m.bg.sel")
            boxLabel.textColor = KMDesignToken.shared.fill(withToken: "dropdown.m.mac-text.sel")
        } else {
            boxLabel.textColor = self.textColor
        }
        
        box.moveCallback =  { mouseEntered, mouseBox in
            if (isDisabled) {
                return
            }
            if (isSelected) { // 选中没有 hover 效果
                return
            }
//            if (mouseEntered) {
//                mouseBox.fillColor = KMDesignToken.shared.fill(withToken: "dropdown.m.bg.hov")
//            } else {
//                mouseBox.fillColor = NSColor.clear
//            }
            if mouseEntered {
                mouseBox.fillColor = self.enterFillColor
            } else {
                mouseBox.fillColor = NSColor.clear
            }
        }
        box.downCallback = { [unowned self] downEntered, mouseBox, _ in
            if (isDisabled) {
                return
            }
            
            if (downEntered) {
                mouseBox.fillColor = KMDesignToken.shared.fill(withToken: "dropdown.m.bg.sel")
                boxLabel.textColor = KMDesignToken.shared.fill(withToken: "dropdown.m.mac-text.sel")
  
                guard let callback = self.downCallback else {
                    return
                }
                callback(true, stringValue)
            } else {
                mouseBox.fillColor = KMDesignToken.shared.fill(withToken: "dropdown.m.bg.norm")
                boxLabel.textColor = KMDesignToken.shared.fill(withToken: "dropdown.m.mac-text.def")
            }
        }
        
        let idx = self.dataArr?.index(of: stringValue) ?? 0
        self.viewWillShow?(box, idx)
    }
}