//
//  NSWindowController+KMExtension.swift
//  PDF Reader Pro
//
//  Created by tangchao on 2023/7/27.
//

import Foundation

@objc protocol KMForceProtocol: NSObjectProtocol {
    @objc optional func setForceOnTop(_ flag: Bool)
}

extension NSWindowController {
    override func km_window() -> NSWindow? {
        return self.window
    }
    
    func forceSubwindowsOnTop(_ flag: Bool) {
        guard let doc = self.document as? NSDocument else {
            NSSound.beep()
            return
        }
        for wc in doc.windowControllers {
            if wc.responds(to: #selector(setForceOnTop)) {
                wc.setForceOnTop(flag)
            }
        }
    }
}

extension NSWindowController: KMForceProtocol {
    func setForceOnTop(_ flag: Bool) {
        // no things.
    }
}

// MARK: - 互动模式
@objc enum KMInteractionMode: Int {
    case normal = 0 // 常规模式
    case fullScreen
    case presentation // 幻灯片模式
    case legacyFullScreen
}

@objc protocol KMInteractionModeProtocol: NSObjectProtocol {
    @objc optional var interactionMode: KMInteractionMode { get }
    @objc optional var isSwitchingFullScreen: Bool { get }
    
    @objc optional func canEnterPresentation() -> Bool
    @objc optional func canExitPresentation() -> Bool
    
    @objc optional func enterPresentation()
    @objc optional func exitPresentation()
}

@objc protocol KMInteractionProviderProtocol: NSObjectProtocol {
    @objc optional func providerContentView(fullScreenWindow: NSWindow, inset: CGFloat) -> NSView?
}



extension NSWindowController: KMInteractionModeProtocol {
    var interactionMode: KMInteractionMode {
        get {
            if let win = self.window?.interactionParent {
                return win.interactionMode
            }
            return self.window?.interactionMode ?? .normal
        }
    }
    
    var isSwitchingFullScreen: Bool {
        get {
            if let win = self.window?.interactionParent {
                return win.isSwitchingFullScreen
            }
            return self.window?.isSwitchingFullScreen ?? false
        }
    }
    
    func canEnterPresentation() -> Bool {
        if let win = self.window?.interactionParent {
            return win.canEnterPresentation()
        }
        return self.window?.canEnterPresentation() ?? false
    }
    
    func canExitPresentation() -> Bool {
        if let win = self.window?.interactionParent {
            return win.canExitPresentation()
        }
        return self.window?.canExitPresentation() ?? false
    }
}

@objc extension NSView: KMInteractionModeProtocol {
    var interactionMode: KMInteractionMode {
        get {
            if let win = self.window?.interactionParent {
                return win.interactionMode
            }
            return self.window?.interactionMode ?? .normal
        }
    }
    
    var isSwitchingFullScreen: Bool {
        get {
            if let win = self.window?.interactionParent {
                return win.isSwitchingFullScreen
            }
            return self.window?.isSwitchingFullScreen ?? false
        }
    }
    
    func canEnterPresentation() -> Bool {
        if let win = self.window?.interactionParent {
            return win.canEnterPresentation()
        }
        return self.window?.canEnterPresentation() ?? false
    }
    
    func canExitPresentation() -> Bool {
        if let win = self.window?.interactionParent {
            return win.canExitPresentation()
        }
        return self.window?.canExitPresentation() ?? false
    }
}

@objc extension NSViewController: KMInteractionModeProtocol {
    var interactionMode: KMInteractionMode {
        get {
            if let win = self.view.window?.interactionParent {
                return win.interactionMode
            }
            return self.view.window?.interactionMode ?? .normal
        }
    }
    
    var isSwitchingFullScreen: Bool {
        get {
            if let win = self.view.window?.interactionParent {
                return win.isSwitchingFullScreen
            }
            return self.view.window?.isSwitchingFullScreen ?? false
        }
    }
    
    func canEnterPresentation() -> Bool {
        if let win = self.view.window?.interactionParent {
            return win.canEnterPresentation()
        }
        return self.view.window?.canEnterPresentation() ?? false
    }
    
    func canExitPresentation() -> Bool {
        if let win = self.view.window?.interactionParent {
            return win.canExitPresentation()
        }
        return self.view.window?.canExitPresentation() ?? false
    }
}