//
//  AccountLoadingView.swift
//  PDF Reader Pro
//
//  Created by User-Tangchao on 2024/11/27.
//

import Cocoa

class ConnectImageView: NSImageView {
    lazy var contentLayer:CALayer = {
        let imgLayer = CALayer()
        imgLayer.frame = self.layer?.bounds ?? .zero
        let image = NSImage(named: "KMImageNameAccountRefreshLoading")!
        imgLayer.contents = image.layerContents(forContentsScale: self.layer!.contentsScale)
        imgLayer.contentsScale = self.layer?.contentsScale ?? 0
        return imgLayer
    }()
    
    func startCircleAnimtion(clockwise:Bool = true) {
        wantsLayer = true
        contentLayer.frame = bounds
        layer?.addSublayer(contentLayer)
        //        print("layer archPoint:\(layer?.anchorPoint),new layer anchorPoint:\(newLayer.anchorPoint)")
        // 注意⚠️，修改了anchorPoint会变更frame，无法实现预期在效果。在macOS上anchorPoint默认为(0,0),如果是新建一个Layer,则layer的anchorPoint默认为(0.5,0.5)
        // 在拉伸视图时，默认layer的frame以及anchorPoint都发生了变化，造成动画不是预期的样子。
        // 所以最终的解决方案是，单独新建一个子Layer，用来处理动画
        let rotateAnimation = CABasicAnimation(keyPath: "transform.rotation.z")
        let from:CGFloat = CGFloat.pi * 2
        let end:CGFloat = 0
        rotateAnimation.fromValue = clockwise ? from : end
        rotateAnimation.toValue = clockwise ? end : from
        rotateAnimation.duration = 1.5
        rotateAnimation.isAdditive = true
        rotateAnimation.repeatDuration = CFTimeInterval.infinity
        contentLayer.add(rotateAnimation, forKey: "rotateAnimation")
    }
    
    func stopCircleAnimation() {
        contentLayer.removeAnimation(forKey: "rotateAnimation")
        contentLayer.removeFromSuperlayer()
    }
}

class AccountLoadingView: NSView {
    private lazy var contentBox_: NSBox = {
        let view = NSBox()
        view.boxType = .custom
        view.titlePosition = .noTitle
        view.contentViewMargins = .zero
        view.borderWidth = 0
        return view
    }()
    
    private lazy var iconIv_: ConnectImageView = {
        let view = ConnectImageView()
//        view.image = NSImage(named: "KMImageNameAccountRefreshLoading")
        return view
    }()
    
    convenience init() {
        self.init(frame: .init(x: 0, y: 0, width: 160, height: 118))
        
        self.initSubviews()
    }
    
    override func awakeFromNib() {
        super.awakeFromNib()
        
        self.initSubviews()
    }
    
    func initSubviews() {
        self.addSubview(self.contentBox_)
        self.contentBox_.km_add_inset_constraint()
        
        self.contentBox_.contentView?.addSubview(self.iconIv_)
        self.iconIv_.km_add_size_constraint(size: .init(width: 40, height: 40))
        self.iconIv_.km_add_centerX_constraint()
        self.iconIv_.km_add_centerY_constraint()
        
        self.contentBox_.fillColor = .black
        self.contentBox_.cornerRadius = 10
    }
    
    func startAnimation() {
        DispatchQueue.main.async {
            self.iconIv_.startCircleAnimtion()
        }
    }
    
    func stopAnimation() {
        self.iconIv_.stopCircleAnimation()
    }
}