my-files-sample/Modules/Sources/Browse/Logic/Adapters/SizeAdapter.swift

//
//  SizeAdapter.swift
//  Browse
//
//  Created by Javier Cicchelli on 15/12/2022.
//  Copyright © 2022 Röck+Cöde. All rights reserved.
//

import Foundation

struct SizeAdapter {
    
    // MARK: Properties
    
    private let measurementFormatter: MeasurementFormatter = .informationSizeFormatter
    
    // MARK: Functions
    
    func callAsFunction(value: Int?) -> String {
        guard let value else { return .Constants.noValue }
        
        let sizeInBytes = Measurement(
            value: Double(value),
            unit: UnitInformationStorage.bytes
        )
        
        return measurementFormatter.string(
            from: sizeInBytes.converted(to: .megabytes)
        )
    }
    
}

// MARK: - DateFormatter+Formats

private extension MeasurementFormatter {
    static let informationSizeFormatter = {
        let formatter = MeasurementFormatter()
        
        formatter.unitStyle = .medium
        formatter.numberFormatter.maximumFractionDigits = 2
        formatter.locale = .current
        
        return formatter
    }()
}

// MARK: - String+Constants

private extension String {
    enum Constants {
        static let noValue = "-"
    }
}