//
//  KMEditPDFPopToolBarController.swift
//  PDF Reader Pro
//
//  Created by tangchao on 2024/6/18.
//

import Cocoa

@objc enum KMEditPDFToolbarItemKey: Int {
    case color
    case fontStyle
    case fontAdd
    case fontReduce
    case fontBold
    case fontItalic
    case textAlignment
    
    case leftRotate
    case rightRotate
    case reverseX // 左右翻转
    case reverseY // 上下翻转
    case crop
    case replace
    case export
    
    case alignmentLeft
    case alignmentRight
    case alignmentCenterX
    case alignmentjustifiedX // 左右两端对齐
    case alignmentTop
    case alignmentBottom
    case alignmentCenterY
    case alignmentjustifiedY // 上下两端对齐
    
    case separator // 分割线
}

class KMSeparatorLineView: NSView {
    var strokeColor: NSColor = .black {
        didSet {
            self.needsDisplay = true
        }
    }
    
    override func draw(_ dirtyRect: NSRect) {
        super.draw(dirtyRect)
        
        let rect = self.bounds
        let ctx = NSGraphicsContext.current?.cgContext
        ctx?.saveGState()
        ctx?.setLineWidth(1)
        ctx?.setStrokeColor(self.strokeColor.cgColor)
        let startP = NSPoint(x: rect.size.width*0.5, y: 6+2)
        ctx?.move(to: startP)
        let endP = NSPoint(x: rect.size.width*0.5, y: rect.size.height-8)
        ctx?.addLine(to: endP)
        ctx?.strokePath()
        ctx?.restoreGState()
    }
}

struct KMEditPDFToolbarStyle: OptionSet {
    let rawValue: Int
    
    static var text  = KMEditPDFToolbarStyle(rawValue: 1 << 0)
    static var image   = KMEditPDFToolbarStyle(rawValue: 1 << 1)
}

class KMEditPDFToolbarItemView: NSView {
    private lazy var contentBox_: NSBox = {
        let view = NSBox()
        view.boxType = .custom
        view.titlePosition = .noTitle
        view.contentViewMargins = .zero
        view.borderWidth = 0
        return view
    }()
    
    var view: NSView? {
        didSet {
            if let data = self.view {
                self.contentBox_.contentView = data
            }
            
            self.needsLayout = true
        }
    }
    
    var obj: AnyObject?
    
    convenience init() {
        self.init(frame: .zero)
        self.addSubview(self.contentBox_)
    }
    
    override func layout() {
        super.layout()
        
        let height = NSHeight(self.bounds)
        let width = NSWidth(self.bounds)
//        let boxFrame = self.contentBox_.contentView?.frame ?? .zero
//        let boxX = (width - boxFrame.size.width) * 0.5
//        let boxY = (height - boxFrame.size.height) * 0.5
//        self.contentBox_.frame = NSMakeRect(boxX, boxY, boxFrame.size.width, boxFrame.size.height)
        self.contentBox_.frame = self.bounds
        
//        KMPrint("-------- \(boxFrame)")
    }
}

class KMEditPDFColorView: NSView {
    lazy var box: NSBox = {
        let view = NSBox()
        view.boxType = .custom
        view.titlePosition = .noTitle
        view.contentViewMargins = .zero
        view.borderWidth = 1
        view.cornerRadius = 4
        view.borderColor = NSColor(hex: "#DFE1E5")
        return view
    }()
    
    lazy var colorBtn: NSButton = {
        let view = NSButton()
        view.isBordered = false
        view.title = ""
        view.wantsLayer = true
        view.layer?.cornerRadius = 10
        
        view.layer?.backgroundColor = .black
        view.target = self
        view.action = #selector(buttonClick)
        return view
    }()
    
    lazy var plateBtn: NSButton = {
        let view = NSButton()
        view.isBordered = false
        view.title = ""
        view.wantsLayer = true
        view.layer?.cornerRadius = 10
        view.layer?.masksToBounds = true
        view.image = NSImage(named: "view_color")
        return view
    }()
    
    override init(frame frameRect: NSRect) {
        super.init(frame: frameRect)
        
        self.initSubView()
    }
    
    required init?(coder: NSCoder) {
        super.init(coder: coder)
        
        self.initSubView()
    }
    
    convenience init() {
        self.init(frame: .init(x: 0, y: 0, width: 56, height: 32))
    }
    
    func initSubView() {
        self.addSubview(self.box)
        self.box.contentView?.addSubview(self.colorBtn)
        self.box.contentView?.addSubview(self.plateBtn)
    }
    
    override func layout() {
        super.layout()
        
        let height = NSHeight(self.bounds)
        self.box.frame = self.bounds
        
        let btnWH: CGFloat = 20
        let btnY: CGFloat = (height - btnWH) * 0.5
        let colorX: CGFloat = 4
        self.colorBtn.frame = NSMakeRect(colorX, btnY, btnWH, btnWH)
        
        let plateX: CGFloat = NSMaxX(self.colorBtn.frame) + 8
        self.plateBtn.frame = NSMakeRect(plateX, btnY, btnWH, btnWH)
    }
    
    @objc func buttonClick(_ sender: NSButton) {
        
    }
}

@objc protocol KMEditPDFToolbarViewDelegate: NSObjectProtocol {
    @objc optional func numberOfItems(in toolbarView: KMEditPDFToolbarView) -> Int
    @objc optional func toolbarView(_ toolbarView: KMEditPDFToolbarView, viewFor index: Int) -> NSView?
    
    @objc optional func toolbarView(_ toolbarView: KMEditPDFToolbarView, sizeForItemAt index: Int) -> NSSize

//    @objc optional func toolbarView(_ toolbarView: KMEditPDFToolbarView, insetForSectionAt section: Int) -> NSEdgeInsets
//    @objc optional func toolbarView(_ toolbarView: KMEditPDFToolbarView, minimumLineSpacingForSectionAt section: Int) -> CGFloat
//    @objc optional func toolbarView(_ toolbarView: KMEditPDFToolbarView, minimumInteritemSpacingForSectionAt section: Int) -> CGFloat
}

class KMEditPDFToolbarView: NSView {
    weak var delegate: KMEditPDFToolbarViewDelegate?
    
    convenience init() {
        self.init(frame: .zero)
    }
    
    var inset: NSEdgeInsets = NSEdgeInsets(top: 0, left: 0, bottom: 0, right: 0) {
        didSet {
            self.needsLayout = true
        }
    }
    
    func reloadData() {
        for sv in self.subviews {
            sv.removeFromSuperview()
        }
        
        guard let num = self.delegate?.numberOfItems?(in: self) else {
            return
        }
        for i in 0 ..< num {
            if let view = self.delegate?.toolbarView?(self, viewFor: i) {
                self.addSubview(view)
            }
        }
        
        self.needsLayout = true
    }
    
    override func layout() {
        super.layout()
        
        let height = NSHeight(self.bounds)
        
        let leftMargin = self.inset.left
        let topMargin = self.inset.top
        var x = leftMargin
        let vSpace: CGFloat = 2
        for (i, sv) in self.subviews.enumerated() {
            if let size = self.delegate?.toolbarView?(self, sizeForItemAt: i) {
                let y = topMargin
                var frame = NSRect(x: x, y: y, width: size.width, height: size.height)
                x += (size.width + vSpace)
                sv.frame = frame
            }
        }
    }
}

@objcMembers class KMEditPDFPopToolBarWindow: NSWindow {
    static let shared = KMEditPDFPopToolBarWindow()
    
    var style: KMEditPDFToolbarStyle = .text
    var isMultiple: Bool = false
    
    var itemClick: ((KMEditPDFToolbarItemKey, Any?)->Void)?
    
    convenience init() {
        let rect = NSRect(x: 0, y: 0, width: 400, height: 44)
        let styleMask: NSWindow.StyleMask = [.fullSizeContentView]
        self.init(contentRect: rect, styleMask: styleMask, backing: .buffered, defer: false)
    }
    
    override init(contentRect: NSRect, styleMask style: NSWindow.StyleMask, backing backingStoreType: NSWindow.BackingStoreType, defer flag: Bool) {
        super.init(contentRect: contentRect, styleMask: style, backing: backingStoreType, defer: flag)
        
        let contentViewC = KMEditPDFPopToolBarController()
        self.contentViewController = contentViewC
        
        self.titlebarAppearsTransparent = true
        self.titleVisibility = .hidden
//        self.level = .popUpMenu
//        self.isMovableByWindowBackground = false
        self.isMovable = false
        
        self.contentView?.wantsLayer = true
        self.contentView?.layer?.cornerRadius = 4
        self.contentView?.layer?.masksToBounds = true
        
        self.backgroundColor = .clear
        
        contentViewC.itemClick = { [weak self] itemKey, obj in
            self?.itemClick?(itemKey, obj)
        }
    }
    
    func show(relativeTo positioningRect: NSRect, of positioningView: NSView, preferredEdge: NSRectEdge) {
        let contentViewC = (self.contentViewController as? KMEditPDFPopToolBarController)
        
        var width: CGFloat = 392
        if self.style.contains(.text) {
            if self.style.contains(.image) { // text + image
                contentViewC?.itemKeys = [.alignmentLeft, .alignmentCenterX, .alignmentRight, .alignmentjustifiedX, .alignmentTop, .alignmentCenterY, .alignmentBottom, .alignmentjustifiedY]
                width = 320
            } else { // text
                if self.isMultiple {
                    width = 478
                    contentViewC?.itemKeys = [.color, .fontStyle, .fontAdd, .fontReduce, .fontBold, .fontItalic, .textAlignment, .separator, .alignmentLeft, .alignmentTop]
                } else {
                    width = 392
                    contentViewC?.itemKeys = [.color, .fontStyle, .fontAdd, .fontReduce, .fontBold, .fontItalic, .textAlignment]
                }
            }
        } else {
            if self.style.contains(.image) { // image
                if self.isMultiple {
                    width = 396
                    contentViewC?.itemKeys = [.leftRotate, .rightRotate, .separator, .reverseX, .reverseY, .separator, .crop, .replace, .export, .separator, .alignmentLeft, .alignmentTop]
                } else {
                    width = 304
                    contentViewC?.itemKeys = [.leftRotate, .rightRotate, .separator, .reverseX, .reverseY, .separator, .crop, .replace, .export]
                }
            } else { // none
                
            }
        }
        
//        var position = positioningView.convert(positioningRect.origin, to: nil)
        var position = NSEvent.mouseLocation
        position.y += 20
        position.x -= 60
//        self.setFrameOrigin(position)
        let frame = NSMakeRect(position.x, position.y, width, 44)
        self.setFrame(frame, display: true)
        
        self.contentViewController?.view.frame = NSMakeRect(0, 0, width, 44)
        self.orderFront(nil)
//        self.makeKeyAndOrderFront(nil)
    }
    
    override var isMainWindow: Bool {
        return true
    }
    
    override var isKeyWindow: Bool {
        return true
    }
}

class KMEditPDFPopToolBarController: NSViewController {
    deinit {
        KMPrint("KMEditPDFPopToolBarController deinit.")
    }
    
    convenience init() {
        self.init(nibName: "KMEditPDFPopToolBarController", bundle: nil)
    }
    
    var toolbarView: KMEditPDFToolbarView?
    var itemKeys: [KMEditPDFToolbarItemKey] = [] {
        didSet {
            self.toolbarView?.reloadData()
        }
    }
    
    var itemClick: ((KMEditPDFToolbarItemKey, Any?)->Void)?
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do view setup here.
        
        self.view.wantsLayer = true
        self.view.layer?.backgroundColor = .white

        let toolbarView = KMEditPDFToolbarView()
        self.toolbarView = toolbarView
        toolbarView.frame = self.view.bounds
        toolbarView.autoresizingMask = [.width, .height]
        self.view.addSubview(toolbarView)
        toolbarView.delegate = self
        toolbarView.inset = .init(top: 6, left: 4, bottom: 0, right: 0)
        
        toolbarView.reloadData()
    }
    
    @objc func _buttonClick(_ sender: NSButton) {
        let idx = sender.tag
        if idx >= 0 && idx < self.itemKeys.count {
            self.itemClick?(self.itemKeys[idx], nil)
        }
    }
}

extension KMEditPDFPopToolBarController: KMEditPDFToolbarViewDelegate {
    func numberOfItems(in toolbarView: KMEditPDFToolbarView) -> Int {
        return self.itemKeys.count
    }
    
    func toolbarView(_ toolbarView: KMEditPDFToolbarView, viewFor index: Int) -> NSView? {
        let itemKey = self.itemKeys[index]
        if itemKey == .color {
            let colorView = KMEditPDFToolbarItemView()
            let view = KMEditPDFColorView()
            colorView.view = view
            return colorView
        } else if itemKey == .fontStyle {
            let fontStyleView = KMEditPDFToolbarItemView()

            let viewC = KMDesignSelect.init(withType: .Combox)
            viewC.isScrollPop = true
            fontStyleView.view = viewC.view
            fontStyleView.obj = viewC
            
            let familyNames = CPDFFont.familyNames
            viewC.removeAllItems()
            viewC.addItems(withObjectValues: familyNames)
            viewC.selectItem(at: 0)
            viewC.delete = self
            return fontStyleView
        } else if itemKey == .separator {
            let colorView = KMEditPDFToolbarItemView()
            let view = KMSeparatorLineView()
            view.strokeColor = NSColor(hex: "#DADBDE")
            colorView.view = view
            return colorView
        }
        let colorView = KMEditPDFToolbarItemView()
        let viewC = KMDesignButton(withType: .Image)
        colorView.view = viewC.view
        colorView.obj = viewC
        viewC.pagination()
        viewC.tag = index
        viewC.target = self
        viewC.action = #selector(_buttonClick)
        if itemKey == .fontAdd {
            viewC.image = NSImage(named: "KMImageNameEditPDFFontAdd")!
        } else if itemKey == .fontReduce {
            viewC.image = NSImage(named: "KMImageNameEditPDFFontReduce")!
        } else if itemKey == .fontBold {
            viewC.image = NSImage(named: "KMImageNameEditPDFFontBold")!
        } else if itemKey == .fontItalic {
            viewC.image = NSImage(named: "KMImageNameEditPDFFontItalic")!
        } else if itemKey == .textAlignment {
            viewC.image = NSImage(named: "KMImageNameEditPDFAlignCenterSelect")!
        }
        // 图片
        else if itemKey == .leftRotate {
            viewC.image = NSImage(named: "KMImageNameEditPDFRotationLeft")!
        } else if itemKey == .rightRotate {
            viewC.image = NSImage(named: "KMImageNameEditPDFRotationRight")!
        } else if itemKey == .reverseX {
            viewC.image = NSImage(named: "KMImageNameEditPDFReverseX")!
        } else if itemKey == .reverseY {
            viewC.image = NSImage(named: "KMImageNameEditPDFReverseY")!
        } else if itemKey == .crop {
            viewC.image = NSImage(named: "KMImageNameEditPDFCrop")!
        } else if itemKey == .replace {
            viewC.image = NSImage(named: "KMImageNameEditPDFReplace")!
        } else if itemKey == .export {
            viewC.image = NSImage(named: "KMImageNameEditPDFExport")!
        }
        // 对齐
        else if itemKey == .alignmentLeft {
            viewC.image = NSImage(named: "KMImageNameEditPDFImage45_1")!
        } else if itemKey == .alignmentCenterX {
            viewC.image = NSImage(named: "KMImageNameEditPDFImage46_1")!
        } else if itemKey == .alignmentRight {
            viewC.image = NSImage(named: "KMImageNameEditPDFImage47_1")!
        } else if itemKey == .alignmentjustifiedX { 
            viewC.image = NSImage(named: "KMImageNameEditPDFImage21_1")!
        } else if itemKey == .alignmentTop {
            viewC.image = NSImage(named: "KMImageNameEditPDFImage48_1")!
        } else if itemKey == .alignmentCenterY {
            viewC.image = NSImage(named: "KMImageNameEditPDFImage49_1")!
        } else if itemKey == .alignmentBottom {
            viewC.image = NSImage(named: "KMImageNameEditPDFImage50_1")!
        } else if itemKey == .alignmentjustifiedY {
            viewC.image = NSImage(named: "KMImageNameEditPDFImage20_1")!
        }
        return colorView
    }
    
    func toolbarView(_ toolbarView: KMEditPDFToolbarView, sizeForItemAt index: Int) -> NSSize {
        let itemKey = self.itemKeys[index]
        if itemKey == .color {
            return NSMakeSize(56, 32)
        } else if itemKey == .fontStyle {
            return NSMakeSize(148, 32)
        } else if itemKey == .separator {
            return NSMakeSize(16, 32)
        }
        return NSMakeSize(32, 32)
    }
}

extension KMEditPDFPopToolBarController: KMSelectPopButtonDelegate {
    func km_comboBoxSelectionDidChange(_ obj: KMDesignSelect) {
//        if (self.lineWidthVC == obj) {
//            let index = self.lineWidthVC.indexOfSelectedItem
//            if index < 0 {
//                return
//            }
//
//            let width = self.lineWidthVC.stringValue.replacingOccurrences(of: "pt", with: "")
//            if annotationModel.stampAnnotationType() == .signDot {
//                annotationModel.setNoteWidth(CGFloat(width.stringToCGFloat())*5)
//                annotationModel.setNoteHeight(CGFloat(width.stringToCGFloat())*5)
//            } else {
//                annotationModel.setLineWidth(width.stringToCGFloat())
//            }
//        } else if (self.opacityVC == obj) {
//            let index = self.opacityVC.indexOfSelectedItem
//            if index < 0 {
//                return
//            }
//
//            let opacity = self.opacityVC.stringValue.replacingOccurrences(of: "%", with: "")
//            self.opacitySlider.floatValue = Float(opacity.stringToCGFloat()/100)
//            annotationModel.setOpacity(opacity.stringToCGFloat()/100)
//        }
//
//        refreshUI()
//        updateAnnotation()
    }
    
    func km_controlTextDidEndEditing(_ obj: KMDesignSelect) {
        
    }
}