eqn.ios/Sources/Earthquake Network/Models/EQNUtility+Extensions.swift

//
//  EQNUtility+Extension.swift
//  Earthquake Network
//
//  Created by Busi Andrea on 08/10/2020.
//  Copyright © 2020 Earthquake Network. All rights reserved.
//

import Foundation


extension EQNUtility {

    /// Convert coordinates in degrees
    /// - Parameter coordinate: The latitude and longitude associated with a location
    /// - Returns: Formatted coordinates, like
    class func coordinateString(coordinate: CLLocationCoordinate2D) -> String {
        var latSeconds = Int(coordinate.latitude * 3600)
        let latDegrees = latSeconds / 3600
        latSeconds = abs(latSeconds % 3600)
        let latMinutes = latSeconds / 60
        latSeconds %= 60
        var longSeconds = Int(coordinate.longitude * 3600)
        let longDegrees = longSeconds / 3600
        longSeconds = abs(longSeconds % 3600)
        let longMinutes = longSeconds / 60
        longSeconds %= 60
        return String(format:"%d°%d'%d\"%@ lat %d°%d'%d\"%@ lon",
                      abs(latDegrees),
                      latMinutes,
                      latSeconds, latDegrees >= 0 ? "N" : "S",
                      abs(longDegrees),
                      longMinutes,
                      longSeconds,
                      longDegrees >= 0 ? "E" : "W" )
    }
    
    @objc
    class func formattedTimeDifference(from: Date, to: Date = Date()) -> String {
        let diffComponents = Calendar.current.dateComponents([.day, .hour, .minute], from: from, to: to)
        let days = diffComponents.day ?? 0
        let hours = diffComponents.hour ?? 0
        let minutes = diffComponents.minute ?? 0
        
        if days > 0 {
            return "\(days)d"
        } else if hours > 0 {
            return "\(hours)h"
        }
        return "\(minutes)m"
    }
}