macos-stats/Stats/libs/Extensions.swift

//
//  Extensions.swift
//  Stats
//
//  Created by Serhiy Mytrovtsiy on 29/05/2019.
//  Copyright © 2019 Serhiy Mytrovtsiy. All rights reserved.
//

import Foundation
import Cocoa

extension Double {
    func roundTo(decimalPlaces: Int) -> String {
        return NSString(format: "%.\(decimalPlaces)f" as NSString, self) as String
    }
    
    func rounded(toPlaces places:Int) -> Double {
        let divisor = pow(10.0, Double(places))
        return (self * divisor).rounded() / divisor
    }
    
    func usageColor(reversed: Bool = false, color: Bool = false) -> NSColor {
        if !color {
            return NSColor.textColor
        }

        if reversed {
            switch self {
            case 0.6...0.8:
                return NSColor.systemOrange
            case 0.8...1:
                return NSColor.systemGreen
            default:
                return NSColor.systemRed
            }
        } else {
            switch self {
            case 0.6...0.8:
                return NSColor.systemOrange
            case 0.8...1:
                return NSColor.systemRed
            default:
                return NSColor.systemGreen
            }
        }
    }
    
    func batteryColor(color: Bool = false) -> NSColor {
        switch self {
        case 0.2...0.4:
            if !color {
                return NSColor.controlTextColor
            }
            return NSColor.systemOrange
        case 0.4...1:
            if self == 1 {
                return NSColor.controlTextColor
            }
            if !color {
                return NSColor.controlTextColor
            }
            return NSColor.systemGreen
        default:
            return NSColor.systemRed
        }
    }
    
    func splitAtDecimal() -> [Int64] {
        return "\(self)".split(separator: ".").map{Int64($0)!}
    }
}

public enum Unit : Float {
    case byte     = 1
    case kilobyte = 1024
    case megabyte = 1048576
    case gigabyte = 1073741824
}

public struct Units {
    public let bytes: Int64
    
    public init(bytes: Int64) {
        self.bytes = bytes
    }
    
    public var kilobytes: Double {
        return Double(bytes) / 1_024
    }
    public var megabytes: Double {
        return kilobytes / 1_024
    }
    public var gigabytes: Double {
        return megabytes / 1_024
    }
    
    public func getReadableTuple() -> (Double, String) {
        switch bytes {
        case 0..<1_024:
            return (0, "KB/s")
        case 1_024..<(1_024 * 1_024):
            return (Double(String(format: "%.2f", kilobytes))!, "KB/s")
        case 1_024..<(1_024 * 1_024 * 1_024):
            return (Double(String(format: "%.2f", megabytes))!, "MB/s")
        case (1_024 * 1_024 * 1_024)...Int64.max:
            return (Double(String(format: "%.2f", gigabytes))!, "GB/s")
        default:
            return (Double(String(format: "%.2f", kilobytes))!, "KB/s")
        }
    }
    
    public func getReadableSpeed() -> String {
        switch bytes {
        case 0..<1_024:
            return "0 KB/s"
        case 1_024..<(1_024 * 1_024):
            return String(format: "%.0f KB/s", kilobytes)
        case 1_024..<(1_024 * 1_024 * 100):
            return String(format: "%.1f MB/s", megabytes)
        case (1_024 * 1_024 * 100)..<(1_024 * 1_024 * 1_024):
            return String(format: "%.0f MB/s", megabytes)
        case (1_024 * 1_024 * 1_024)...Int64.max:
            return String(format: "%.1f GB/s", gigabytes)
        default:
            return String(format: "%.0f KB/s", kilobytes)
        }
    }
    
    public func getReadableMemory() -> String {
        switch bytes {
        case 0..<1_024:
            return "0 KB/s"
        case 1_024..<(1_024 * 1_024):
            return String(format: "%.0f KB", kilobytes)
        case 1_024..<(1_024 * 1_024 * 1_024):
            return String(format: "%.0f MB", megabytes)
        case (1_024 * 1_024 * 1_024)...Int64.max:
            return String(format: "%.2f GB", gigabytes)
        default:
            return String(format: "%.0f KB", kilobytes)
        }
    }
}

extension Double {
    
    func secondsToHoursMinutesSeconds () -> (Int?, Int?, Int?) {
        let hrs = self / 3600
        let mins = (self.truncatingRemainder(dividingBy: 3600)) / 60
        let seconds = (self.truncatingRemainder(dividingBy:3600)).truncatingRemainder(dividingBy:60)
        return (Int(hrs) > 0 ? Int(hrs) : nil , Int(mins) > 0 ? Int(mins) : nil, Int(seconds) > 0 ? Int(seconds) : nil)
    }
    
    func printSecondsToHoursMinutesSeconds () -> String {
        let time = self.secondsToHoursMinutesSeconds()
        
        switch time {
        case (nil, let x? , let y?):
            return "\(x) min \(y) sec"
        case (nil, let x?, nil):
            return "\(x) min"
        case (let x?, nil, nil):
            return "\(x) h"
        case (nil, nil, let x?):
            return "\(x) sec"
        case (let x?, nil, let z?):
            return "\(x) h \(z) sec"
        case (let x?, let y?, nil):
            return "\(x) h \(y) min"
        case (let x?, let y?, let z?):
            return "\(x) h \(y) min \(z) sec"
        default:
            return "n/a"
        }
    }
}

extension String {
    func condenseWhitespace() -> String {
        let components = self.components(separatedBy: .whitespacesAndNewlines)
        return components.filter { !$0.isEmpty }.joined(separator: " ")
    }
}

extension NSBezierPath {
    func addArrow(start: CGPoint, end: CGPoint, pointerLineLength: CGFloat, arrowAngle: CGFloat) {
        self.move(to: start)
        self.line(to: end)
        
        let startEndAngle = atan((end.y - start.y) / (end.x - start.x)) + ((end.x - start.x) < 0 ? CGFloat(Double.pi) : 0)
        let arrowLine1 = CGPoint(x: end.x + pointerLineLength * cos(CGFloat(Double.pi) - startEndAngle + arrowAngle), y: end.y - pointerLineLength * sin(CGFloat(Double.pi) - startEndAngle + arrowAngle))
        let arrowLine2 = CGPoint(x: end.x + pointerLineLength * cos(CGFloat(Double.pi) - startEndAngle - arrowAngle), y: end.y - pointerLineLength * sin(CGFloat(Double.pi) - startEndAngle - arrowAngle))
        
        self.line(to: arrowLine1)
        self.move(to: end)
        self.line(to: arrowLine2)
    }
}

extension NSColor {
    
    convenience init(hexString: String, alpha: CGFloat = 1.0) {
        let hexString: String = hexString.trimmingCharacters(in: CharacterSet.whitespacesAndNewlines)
        let scanner = Scanner(string: hexString)
        if (hexString.hasPrefix("#")) {
            scanner.scanLocation = 1
        }
        var color: UInt32 = 0
        scanner.scanHexInt32(&color)
        let mask = 0x000000FF
        let r = Int(color >> 16) & mask
        let g = Int(color >> 8) & mask
        let b = Int(color) & mask
        let red   = CGFloat(r) / 255.0
        let green = CGFloat(g) / 255.0
        let blue  = CGFloat(b) / 255.0
        self.init(red:red, green:green, blue:blue, alpha:alpha)
    }
    
    func toHexString() -> String {
        var r:CGFloat = 0
        var g:CGFloat = 0
        var b:CGFloat = 0
        var a:CGFloat = 0
        getRed(&r, green: &g, blue: &b, alpha: &a)
        let rgb:Int = (Int)(r*255)<<16 | (Int)(g*255)<<8 | (Int)(b*255)<<0
        return String(format:"#%06x", rgb)
    }
}

extension String {
    mutating func findAndCrop(pattern: String) -> String {
        let regex = try! NSRegularExpression(pattern: pattern)
        let stringRange = NSRange(location: 0, length: self.utf16.count)
        var line = self
        
        if let searchRange = regex.firstMatch(in: self, options: [], range: stringRange) {
            let start = self.index(self.startIndex, offsetBy: searchRange.range.lowerBound)
            let end = self.index(self.startIndex, offsetBy: searchRange.range.upperBound)
            let value  = String(self[start..<end]).trimmingCharacters(in: .whitespaces)
            line = self.replacingOccurrences(
                of: value,
                with: "",
                options: .regularExpression
            )
            self = line.trimmingCharacters(in: .whitespaces)
            return value.trimmingCharacters(in: .whitespaces)
        }
        
        return ""
    }
    
    func matches(_ regex: String) -> Bool {
        return self.range(of: regex, options: .regularExpression, range: nil, locale: nil) != nil
    }
}

extension URL {
    func checkFileExist() -> Bool {
        return FileManager.default.fileExists(atPath: self.path)
    }
}