using Foundation;

namespace Blahblah.Library.Network;

public class DownloadTask<T> : ContentTask<T, bool>
{
    public string FilePath { get; }

    protected override bool AllowDefaultResult => true;

    public DownloadTask(string url, string filePath, TaskCompletionSource<NetworkResult<bool>> source, CancellationToken token) : base(url, source, token)
    {
        FilePath = filePath;
    }

    protected override bool Completed(NSHttpUrlResponse? response)
    {
        if (Data == null)
        {
            throw new NullReferenceException("Data is null");
        }
        var result = Data.Save(FilePath, NSDataWritingOptions.Atomic, out NSError? error);
        if (error != null)
        {
            throw new Exception(error?.ToString() ?? "UUnknown error while saving file");
        }
        return result;
    }
}