//
//  FileAdapter.swift
//  Browse
//
//  Created by Javier Cicchelli on 17/12/2022.
//  Copyright © 2022 Röck+Cöde. All rights reserved.
//

import APIService
import Foundation

struct FileAdapter {
    func callAsFunction(url: URL) throws -> File {
        guard url.isFileURL else {
            throw FileAdapterError.urlIsNotFileURL
        }
        
        let data = try Data(contentsOf: url)
        let name = try url
            .resourceValues(forKeys: [.nameKey])
            .allValues
            .first(where: { $0.key == .nameKey })
            .map(\.value)
        
        guard let name = name as? String else {
            throw FileAdapterError.nameNotCasted
        }
        
        return .init(
            name: name,
            data: data
        )
    }
}

// MARK: - Errors

enum FileAdapterError: Error {
    case urlIsNotFileURL
    case nameNotCasted
}