//
//  KMPreferenceWindowController.swift
//  PDF Master
//
//  Created by tangchao on 2023/2/2.
//

import Cocoa

protocol KMPreferenceDealDataChangeProtocol: NSObjectProtocol {
    func refreshUI()
}

class KMPreferenceWindowController: NSWindowController {
    
    static let shared = KMPreferenceWindowController(windowNibName: "KMPreferenceWindowController")

    @IBOutlet weak var titleBarBox: NSBox!
    @IBOutlet weak var contentBox: NSBox!
    
    @IBOutlet weak var bottomBarBox: NSBox!
    @IBOutlet weak var resetButton: NSButton!
    @IBOutlet weak var resetAllButton: NSButton!
    
    @IBOutlet weak var contentHeightConst: NSLayoutConstraint!
    @IBOutlet weak var contentWidthConst: NSLayoutConstraint!
    
    var currentController: KMPreferenceDealDataChangeProtocol?
    var currentItemIndex: Int = 0
    
    deinit {
        NotificationCenter.default.removeObserver(self)
    }
    
    override func loadWindow() {
        super.loadWindow()
        
        self.adjectWindowSize(NSSize(width: 512, height: 504), false)
    }
    
    override func showWindow(_ sender: Any?) {
        super.showWindow(sender)
        self.currentController?.refreshUI()
    }
    
    override func windowDidLoad() {
        super.windowDidLoad()
        self.window?.title = NSLocalizedString("Preferences", comment: "")
        self.window?.titlebarAppearsTransparent = true
        self.window?.appearance = NSAppearance(named: .aqua)
        self.titleBarBox.fillColor = NSColor(white: 245/255.0, alpha: 1.0)
        self.window?.backgroundColor = NSColor(white: 245/255.0, alpha: 1.0)
        self.contentBox.fillColor = NSColor(white: 241/255.0, alpha: 1.0)
        self.bottomBarBox.fillColor = NSColor(white: 241/255.0, alpha: 1.0)
        
        let segmentControl = KMPreferenceSegementControl()
        segmentControl.frame = self.titleBarBox.contentView!.bounds
        segmentControl.autoresizingMask = [.width, .height]
        self.titleBarBox.contentView?.addSubview(segmentControl)
        
        segmentControl.target = self
        segmentControl.action = #selector(segmentControlSelectionDidChange)
        
        let titles = [NSLocalizedString("General", comment: ""),NSLocalizedString("Display", comment: ""), NSLocalizedString("Annotation", comment: "")]
        let selectedImages = ["KMImageNamePreferenceGeneralSelected", "KMImageNamePreferenceDisplaySelected", "KMImageNamePreferenceAnnotationSelected"]
        let unselectedImages = ["KMImageNamePreferenceGeneralUnSelected", "KMImageNamePreferenceDisplayUnSelected", "KMImageNamePreferenceAnnotationUnSelected"]
        var i: Int = 0
        for item in segmentControl.items {
            item.label.font = NSFont.systemFont(ofSize: 11)
            item.label.stringValue = titles[i]
            item.unSelectedTextColor = NSColor(red: 97/255.0, green: 100/255.0, blue: 105/255.0, alpha: 1.0)
            item.selectedTextColor = NSColor(red: 23/255.0, green: 112/255.0, blue: 244/255.0, alpha: 1.0)
            item.selectedImage = NSImage(named: selectedImages[i])
            item.unSelectedImage = NSImage(named: unselectedImages[i])
            i += 1
        }
        segmentControl.selectItem(segmentControl.items.first!.itemID)
        self.showContent(segmentControl.items.first!.itemID)

        resetButton.title = NSLocalizedString("Reset", comment: "")
        resetButton.target = self
        resetButton.action = #selector(resetAction)
        
        resetAllButton.title = NSLocalizedString("Reset All", comment: "")
        resetAllButton.target = self
        resetAllButton.action = #selector(resetAllAction)
        
        NotificationCenter.default.addObserver(self, selector: #selector(preferenceDidChangeNotification), name: KMPreferenceManager.didChangeNotification, object: nil)
    }
    
    @objc func resetAction() {
        if (self.currentItemIndex == 1) {
            KMPreferenceManager.shared.resetData(.general)
        } else if (self.currentItemIndex == 2) {
            KMPreferenceManager.shared.resetData(.display)
        } else if (self.currentItemIndex == 3) {
            KMPreferenceManager.shared.resetData(.markup)
        }
    }
    
    @objc func resetAllAction() {
        KMPreferenceManager.shared.resetAllData()
    }
    
    @objc func segmentControlSelectionDidChange(sender: KMPreferenceSegementControl) {
        if (self.currentItemIndex == sender.selectedIndex) {
            return
        }
        
        self.showContent(sender.selectedIndex)
    }
    
    @objc private func preferenceDidChangeNotification(sender: Notification) {
        if (self.currentController == nil) {
            return
        }
        
        self.currentController?.refreshUI()
    }
    
    private func adjectWindowSize(_ size: NSSize) {
        self.adjectWindowSize(size, true)
    }
    
    private func adjectWindowSize(_ size: NSSize, _ animated: Bool) {
        if (animated) {
            self.contentWidthConst.animator().constant = size.width
            self.contentHeightConst.animator().constant = size.height-120
        } else {
            self.contentWidthConst.constant = size.width
            self.contentHeightConst.constant = size.height-120
        }
    }
    
    private func showContent(_ index: Int) {
        for view in (self.contentBox.contentView?.subviews)! {
            view.removeFromSuperview()
        }
        
        self.currentItemIndex = index
        
        if (index == 1) {
            self.adjectWindowSize(NSSize(width: 512, height: 504), false)
            
            let controller = KMPreferenceGeneralController()
            self.contentBox.contentView?.addSubview(controller.view)
            controller.view.frame = self.contentBox.contentView!.bounds
            controller.view.autoresizingMask = [.width, .height]
            self.currentController = controller
        } else if (index == 2) {
            self.adjectWindowSize(NSSize(width: 512, height: 570), false)
            
            let controller = KMPreferenceDisplayController()
            self.contentBox.contentView?.addSubview(controller.view)
            controller.view.frame = self.contentBox.contentView!.bounds
            controller.view.autoresizingMask = [.width, .height]
            self.currentController = controller
        } else if (index == 3) {
            self.adjectWindowSize(NSSize(width: 512, height: 532), false)
            
            let controller = KMPreferenceMarkupController()
            self.contentBox.contentView?.addSubview(controller.view)
            controller.view.frame = self.contentBox.contentView!.bounds
            controller.view.autoresizingMask = [.width, .height]
            self.currentController = controller
        }

    }
    
}