//
//  widget.swift
//  ModuleKit
//
//  Created by Serhiy Mytrovtsiy on 10/04/2020.
//  Using Swift 5.0.
//  Running on macOS 10.15.
//
//  Copyright © 2020 Serhiy Mytrovtsiy. All rights reserved.
//

import Cocoa
import StatsKit

public enum widget_t: String {
    case unknown = ""
    case mini = "mini"
    case lineChart = "line_chart"
    case barChart = "bar_chart"
    case network = "network"
    case battery = "battery"
    case sensors = "sensors"
}
extension widget_t: CaseIterable {}

public protocol Widget_p: NSView {
    var title: String { get }
    var preview: Bool { get }
    var type: widget_t { get }
    var widthHandler: ((CGFloat) -> Void)? { get set }
    
    func setValues(_ values: [value_t])
    func settings(superview: NSView)
}

open class Widget: NSView, Widget_p {
    public var widthHandler: ((CGFloat) -> Void)? = nil
    public var title: String = ""
    public var preview: Bool = false
    public var type: widget_t = .unknown
    
    private var widthHandlerRetry: Int8 = 0
    
    open override var intrinsicContentSize: CGSize {
        return CGSize(width: self.frame.size.width, height: self.frame.size.height)
    }
    
    public func setWidth(_ width: CGFloat) {
        if self.frame.width == width || self.widthHandlerRetry >= 3 {
            return
        }
        
        if self.widthHandler == nil {
            DispatchQueue.main.asyncAfter(deadline: .now() + .microseconds(10)) {
                self.setWidth(width)
                self.widthHandlerRetry += 1
            }
            return
        }
        
        DispatchQueue.main.async {
            self.setFrameSize(NSSize(width: width, height: self.frame.size.height))
            self.invalidateIntrinsicContentSize()
            self.display()
        }
        
        self.widthHandler!(width)
    }
    
    open func settings(superview: NSView) {}
    open func setValues(_ values: [value_t]) {}
}

func LoadWidget(_ type: widget_t, preview: Bool, title: String, config: NSDictionary?, store: UnsafePointer<Store>?) -> Widget_p? {
    var widget: Widget_p? = nil
    let widgetConfig: NSDictionary? = config?[type.rawValue] as? NSDictionary
    
    switch type {
    case .mini:
        widget = Mini(preview: preview, title: title, config: widgetConfig, store: store)
        break
    case .lineChart:
        widget = LineChart(preview: preview, title: title, config: widgetConfig, store: store)
        break
    case .barChart:
        widget = BarChart(preview: preview, title: title, config: widgetConfig, store: store)
        break
    case .network:
        widget = NetworkWidget(preview: preview, title: title, config: widgetConfig, store: store)
        break
    case .battery:
        widget = BatterykWidget(preview: preview, title: title, config: widgetConfig, store: store)
        break
    case .sensors:
        widget = SensorsWidget(preview: preview, title: title, config: widgetConfig, store: store)
        break
    default: break
    }
    
    return widget
}