/// <summary>
/// Copy files one one location to another. This method has the start and destination locations "pinned".
/// </summary>
/// <param name="source"></param>
/// <param name="destination"></param>
/// <param name="files"></param>
/// <param name="statusUpdate"></param>
/// <param name="failNow"></param>
/// <param name="timeout">Minutes of no progress before canceling it</param>
/// <returns></returns>
public static async Task <Uri[]> CopyFilesAsync(IPlace source, IPlace destination, Uri[] files, Action <string> statusUpdate = null, Func <bool> failNow = null, int timeout = 60)
{
// Simple checks
var goodFiles = files
.ThrowIfNull(() => new ArgumentNullException($"files can't be a null argument"))
.Throw(u => u.Scheme != "gridds", u => new UnknownUriSchemeException($"Can only deal with gridds:// uris - found: {u.OriginalString}"));
if (destination == null)
{
throw new ArgumentNullException("Can't have a null destination!");
}
if (!(await _places).Contains(destination))
{
throw new ArgumentException($"Place {destination.Name} is not on our master list of places!");
}
if (source == null)
{
throw new ArgumentNullException("Can't have a null source!");
}
if (!(await _places).Contains(source))
{
throw new ArgumentException($"Place {source.Name} is not on our master list of places!");
}
var all_check = await Task.WhenAll(files.Select(async fl => await source.HasFileAsync(fl, statusUpdate, failNow)));
if (!all_check.All(f => f))
{
throw new ArgumentException($"Place {source.Name} does not have all the requested files");
}
// Find a route to make them "local", and sort them by the route name (e.g. we can batch the file accesses).
var routeSources = new IPlace[] { source };
var routedFilesList = await Task.WhenAll(goodFiles
.Select(async u => new RoutedFileInfo {
r = await FindRouteFromSources((await destination.HasFileAsync(u, statusUpdate, failNow)) ? routeSources.Concat(new IPlace[] { destination }).ToArray() : routeSources, u, p => p == destination, p => p == destination),
f = u
}));
var routedFiles = routedFilesList
.GroupBy(info => info.r.Name)
.ToArray();
// To do the files, we need to first fine a routing from wherever they are to the final location.
var resultUris = await GetListOfRoutedFiles(statusUpdate, failNow, timeout, routedFiles);
return(resultUris.ToArray());
}
