import Foundation

extension URL {

    func ensureParentFolderExistence() throws {
        try deletingLastPathComponent().ensureFolderExistence()
    }

    func ensureFolderExistence() throws {
        guard !exists else {
            return
        }
        try FileManager.default.createDirectory(at: self, withIntermediateDirectories: true)
    }

    var isDirectory: Bool {
        (try? resourceValues(forKeys: [.isDirectoryKey]))?.isDirectory == true
    }

    var exists: Bool {
        FileManager.default.fileExists(atPath: path)
    }

    /**
     Delete the file at the url.
     */
    func delete() throws {
        try FileManager.default.removeItem(at: self)
    }

    func copy(to url: URL) throws {
        if url.exists {
            try url.delete()
        }
        try url.ensureParentFolderExistence()
        try FileManager.default.copyItem(at: self, to: url)
    }
}