//
//  KMFullScreenWindow.swift
//  PDF Master
//
//  Created by liujiajie on 2024/1/16.
//

import Cocoa

let DURATION = 0.3

class KMFullScreenWindow: NSWindow, NSAnimationDelegate{
    var animation: NSViewAnimation?
    var isMain = false
    
    convenience init(screen: NSScreen, bgColor: NSColor, level: Int, isMain flag: Bool){
        self.init(contentRect: screen.frame, styleMask: .borderless, backing: .buffered, defer: false)
        isMain = flag
        self.backgroundColor = bgColor
        self.level = NSWindow.Level(rawValue: level)
        self.isReleasedWhenClosed = false
        self.displaysWhenScreenProfileChanges = flag
        self.acceptsMouseMovedEvents = flag
        self.isExcludedFromWindowsMenu = flag == false
        self.setFrame(screen.frame, display: false)
        let selector = NSSelectorFromString("setAnimationBehavior:")
        if self.responds(to: selector){
            self.animationBehavior = .none
        }
    }
    
    deinit {
        stopAnimation()
    }
    
    func stopAnimation() {
        animation?.stop()
        animation = nil
    }
    
    func canBecomeKeyWindow() -> Bool {
        return isMain
    }
    
    func canBecomeMainWindow() -> Bool {
        return isMain
    }
    override func orderFront(_ sender: Any?) {
        self.stopAnimation()
        self.alphaValue = 1.0
        super.orderFront(sender)
    }
    
    override func makeKeyAndOrderFront(_ sender: Any?) {
        self.stopAnimation()
        self.alphaValue = 1.0
        super.makeKeyAndOrderFront(sender)
    }
    
    override func orderOut(_ sender: Any?) {
        self.stopAnimation()
        self.alphaValue = 1.0
        super.orderOut(sender)
    }
    
    func fadeOutWithBlockingMode(blockingMode: NSAnimation.BlockingMode) {
        if UserDefaults.standard.bool(forKey: SKDisableAnimationsKey) {
            self.orderOut(nil)
        } else {
            
            let dict = NSMutableDictionary()
            dict.setObject(self as Any, forKey: NSViewAnimation.Key.target as NSCopying)
            dict.setObject(NSViewAnimation.EffectName.fadeOut, forKey: NSViewAnimation.Key.effect as NSCopying)
            
            animation = NSViewAnimation(viewAnimations: NSArray(object: dict) as! [[NSViewAnimation.Key : Any]])
            animation?.animationBlockingMode = blockingMode
            animation?.duration = DURATION
            animation?.delegate = self
            animation?.start()
        }
    }
    
    func fadeInWithBlockingMode(blockingMode: NSAnimation.BlockingMode) {
        if UserDefaults.standard.bool(forKey: SKDisableAnimationsKey) {
            self.orderFront(nil)
        } else {
            
            let dict = NSMutableDictionary()
            dict.setObject(self as Any, forKey: NSViewAnimation.Key.target as NSCopying)
            dict.setObject(NSViewAnimation.EffectName.fadeIn, forKey: NSViewAnimation.Key.effect as NSCopying)
            self.alphaValue = 0.0
            super.orderFront(nil)
            
            animation = NSViewAnimation(viewAnimations: NSArray(object: dict) as! [[NSViewAnimation.Key : Any]])
            animation?.animationBlockingMode = blockingMode
            animation?.duration = DURATION
            animation?.delegate = self
            animation?.start()
        }
    }
    
    func fadeOutBlocking() {
        self.fadeOutWithBlockingMode(blockingMode: .blocking)
    }
    
    func fadeOut() {
        self.fadeOutWithBlockingMode(blockingMode: .nonblockingThreaded)
    }
    
    func fadeInBlocking() {
        self.fadeInWithBlockingMode(blockingMode: .blocking)
    }
    
    func fadeIn() {
        self.fadeInWithBlockingMode(blockingMode: .nonblockingThreaded)
    }
    
    func animationDidEnd(_ anAnimation: NSAnimation) {
        let ani: NSViewAnimation = animation ?? NSViewAnimation()
        let arr: [Any] = ani.viewAnimations
        let dict: [NSViewAnimation.Key: Any] = arr.last as! [NSViewAnimation.Key : Any]
        let isFadeOut: Bool = dict[NSViewAnimation.Key.effect] as! NSViewAnimation.EffectName == NSViewAnimation.EffectName.fadeOut
        animation = nil
        Task { @MainActor in
            if isFadeOut {
                self.orderOut(nil)
            }
            self.alphaValue = 1.0
        }
    }

    func animationDidStop(_ anAnimation: NSAnimation) {
        animation = nil
        self.orderOut(nil)
        self.alphaValue = 1.0
    }
    
    override func sendEvent(_ event: NSEvent) {
        if event.type == .rightMouseDown || (event.type == .leftMouseDown && (event.modifierFlags.rawValue & NSEvent.ModifierFlags.control.rawValue) != 0) {
            if self.windowController?.responds(to: Selector(("handleRightMouseDown:"))) == true && self.windowController?.handleRightMouseDown(theEvent: event) == true {
                return
            }
        } else if event.type == .keyDown {
            if event.keyCode == 53 { // esc
//                let sel = NSSelectorFromString("cancelOperation")
                self.cancelOperation(nil)
                return
            }
        }
        super.sendEvent(event)
    }
    
    override func cancelOperation(_ sender: Any?) {
        if self.windowController?.responds(to: #selector(NSStandardKeyBindingResponding.cancelOperation(_:))) == true {
            self.windowController?.cancelOperation(self)
        }
    }
}

extension NSWindowController{
    func handleRightMouseDown(theEvent: NSEvent) -> Bool {
        return false
    }
}