DocumentPickerUtil

import Foundation

class DocumentPickerUtil {
    static let shared = DocumentPickerUtil()
    
    func isFileSizeExceeds(_ fileUrl: URL?, maxSizeMB: Float) -> Bool {
        guard let fileUrl = fileUrl else { return true }
        let fileSize = getFileSizeFromURL(fileUrl)
        return allowToSendFile(fileSize, maxSizeMB)
    }
    
    private func getFileSizeFromURL(_ fileUrl: URL) -> String {
        var fileSizeValue: UInt64 = 0
        do {
            let fileAttribute: [FileAttributeKey : Any] = try FileManager.default.attributesOfItem(atPath: fileUrl.path)
            
            if let fileNumberSize: NSNumber = fileAttribute[FileAttributeKey.size] as? NSNumber {
                fileSizeValue = UInt64(truncating: fileNumberSize)
                
                let byteCountFormatter: ByteCountFormatter = ByteCountFormatter()
                byteCountFormatter.countStyle = ByteCountFormatter.CountStyle.file

                byteCountFormatter.allowedUnits = ByteCountFormatter.Units.useMB
                let fileSize = byteCountFormatter.string(fromByteCount: Int64(fileSizeValue))
                Logger.log(fileSize)
                return fileSize
            }
        } catch {
            print(error.localizedDescription)
        }
        return ""
    }
    
    private func allowToSendFile(_ fileSize: String, _ maxSize: Float) -> Bool {
        let strSize = fileSize.replacingOccurrences(of: " MB", with: "")
        if let intSize = Float(strSize), intSize > maxSize {
            return false
        } else {
            return true
        }
    }
}