//
//  KMDesignStepperView.swift
//  PDF Reader Pro
//
//  Created by tangchao on 2023/6/8.
//

// 步进器 组件
class KMDesignStepperView: KMDesignBaseView {
    private var _stepperView: KMCustomStepperView?
    weak var delegate: KMTextFieldDelegate?
    
    override var kmEnabled: Bool {
        get {
            return super.kmEnabled
        }
        set {
            super.kmEnabled = newValue
            
            self._stepperView?.kmEnabled = newValue
        }
    }
    
    var minValue: Double = CGFloat.leastNormalMagnitude {
        didSet {
            self._stepperView?.minValue = self.minValue
        }
    }
    var maxValue: Double = CGFloat.greatestFiniteMagnitude {
        didSet {
            self._stepperView?.maxValue = self.maxValue
        }
    }
    var increment: Double = 1 {
        didSet {
            self._stepperView?.increment = self.increment
        }
    }
    var autorepeat = true {
        didSet {
            self._stepperView?.autorepeat = self.autorepeat
        }
    }
    var kmValue: Double {
        get {
            if let value = self._stepperView?.kmValue {
                return value
            }
            return 0
        }
        set {
            self._stepperView?.kmValue = newValue
        }
    }
    
    override func initSubViews() {
        super.initSubViews()
        
        self._stepperView = KMCustomStepperView()
        self._stepperView?.delegate = self
        self.addSubview(self._stepperView!)
        self._stepperView?.hoverAction = { [unowned self] sender, action in
            if (!self.canHover()) {
                return
            }
            
            if (action == .enter) {
                self.state = .Hov
            } else if (action == .exit) {
                self.state = .Norm
            }
        }
        
        self._stepperView?.rightHoverAction = { [unowned self] button, action in
            if (action == .enter) {
                button.wantsLayer = true
                button.layer?.backgroundColor = KMDesignToken.shared.fill(withToken: self.find_arrowBgToken(state: .Hov)).cgColor
            } else if (action == .exit) {
                button.wantsLayer = true
                button.layer?.backgroundColor = .clear
            }
        }
    }
    
    override func initDefaultValue() {
        super.initDefaultValue()
        
        self._stepperView?.backgroundView.wantsLayer = true
        let model = KMDesignToken.shared.tokenUsesModel(withToken: self.find_bgToken(state: .Norm))
        if let data = model.height as? String, let _height = Float(data) {
            self.height = CGFloat(_height)
        }
        if let data = model.paddingLeft as? String, let _paddingLeft = Float(data) {
            self._stepperView?.contentOffset = CGFloat(_paddingLeft)
        }
        self._stepperView?.itemWidth = 20
        let arrowBgModel = KMDesignToken.shared.tokenUsesModel(withToken: self.find_arrowBgToken(state: .Norm))
        if let data = arrowBgModel.height as? String, let _height = Float(data) {
            self._stepperView?.itemHeight = CGFloat(_height)
        }

        self._stepperView?.horizontalDividerHeight = self.horDividerHeight()
        self._stepperView?.horizontalDividerColor = self.horDividerColor()
        self._stepperView?.verticalDividerWidth = self.verDividerWidth()
        self._stepperView?.verticalDividerColor = self.verDividerColor()
        
        self.state = .Norm
    }
    
    override func layout() {
        super.layout()
        
        let width: CGFloat = NSWidth(self.bounds)
        let heigth: CGFloat = NSHeight(self.bounds)
        
        let y: CGFloat = (heigth - self.height) * 0.5
        self._stepperView?.frame = NSMakeRect(0, y, width, self.height)
    }
    
    override func find_bgToken(state: KMDesignTokenState) -> KMDesignTokenKey {
        if (state == .Norm) {
            return "stepper.bg.norm"
        } else if (state == .Hov) {
            return "stepper.bg.hov"
        } else if (state == .Focus) {
            return "stepper.bg.focus"
        } else if (state == .Disabled) {
            return "stepper.bg.dis"
        }
        return KMDesignTokenNone
    }
    
    override func find_textToken(state: KMDesignTokenState) -> KMDesignTokenKey {
        if (state == .Norm) {
            return "stepper.mac-text.def"
        } else if (state == .Hov) {
            return "stepper.mac-text.def"
        } else if (state == .Focus) {
            return "stepper.mac-text.def"
        } else if (state == .Disabled) {
            return "stepper.mac-text.dis"
        }
        return KMDesignTokenNone
    }
    
    func find_arrowBgToken(state: KMDesignTokenState) -> KMDesignTokenKey {
        if (state == .Norm) {
            return "stepper.arrow.bg.def"
        } else if (state == .Hov) {
            return "stepper.arrow.bg.hov"
        } else if (state == .Focus) {
            return "stepper.arrow.bg.def"
        } else if (state == .Disabled) {
            return "stepper.arrow.bg.def"
        }
        return KMDesignTokenNone
    }
    
    override func updateUI(state: KMDesignTokenState) {
        super.updateUI(state: state)
        
        self._stepperView?.backgroundView.layer?.backgroundColor = self.fillColor.cgColor
        self._stepperView?.backgroundView.layer?.borderWidth = self.borderWidth
        self._stepperView?.backgroundView.layer?.borderColor = self.borderColor.cgColor
        self._stepperView?.backgroundView.layer?.cornerRadius = self.borderRadius
        
        self._stepperView?.textField.textColor = self.textColor
        if let _font = NSFont(name: self.fontName, size: self.fontSize) {
            self._stepperView?.textField.font = _font
        }
    }
}

extension KMDesignStepperView: KMTextFieldDelegate {
    func km_didBecomeFirstResponder(textField: AnyObject) {
        if (textField.isEqual(to: self._stepperView)) {
            self.state = .Focus
        }
        
        self.delegate?.km_didBecomeFirstResponder(textField: self)
    }
    
    func km_controlTextShouldBeginEditing(textField: AnyObject) -> Bool {
        if let should = self.delegate?.km_controlTextShouldBeginEditing(textField: self) {
            return should
        }
        return true
    }
    
    func km_controlTextDidBeginEditing(textField: AnyObject) {
        self.delegate?.km_controlTextDidBeginEditing(textField: self)
    }
    
    func km_controlTextDidChange(textField: AnyObject) {
        self.delegate?.km_controlTextDidChange(textField: self)
    }
    
    func km_controlTextShouldEndEditing(textField: AnyObject) -> Bool {
        if let should = self.delegate?.km_controlTextShouldEndEditing(textField: self) {
            return should
        }
        return true
    }
    
    func km_controlTextDidEndEditing(textField: AnyObject) {
        if (textField.isEqual(to: self._stepperView)) {
            self.state = .Norm
        }
        
        self.delegate?.km_controlTextDidEndEditing(textField: self)
    }
}