//
//  TimerCountFormatter.swift
//  KCD
//
//  Created by Hori,Masaki on 2017/01/04.
//  Copyright © 2017年 Hori,Masaki. All rights reserved.
//

import Cocoa

final class TimerCountFormatter: Formatter {
    
    override func string(for obj: Any?) -> String? {
        
        let v: Double? = {
            
            if let o = obj as? NSNumber { return o.doubleValue }
            
            if let o = obj as? Date { return Double(o.timeIntervalSince1970) }
            
            return nil
        }()
        
        guard let value = v else {
            
            return ""
        }
        
        let minus = value < 0
        let interval = minus ? -value : value
        
        let hour = Int(interval / (60 * 60))
        let minComp = interval - Double(hour * 60 * 60)
        let minutes = Int(minComp / 60)
        let secComp = minComp - Double(minutes * 60)
        let seconds = Int(secComp)
        
        return String(format: "%@%02ld:%02ld:%02ld", arguments: [(minus ? "-" : ""), hour, minutes, seconds])
    }
}