public static (bool Valid, string Message) IsDocumentIdValid(this string documentId)
{
const string syntax = "[{container}:]{path}[/{path}...]";
if (documentId.IsEmpty())
{
return(false, "Id required");
}
IReadOnlyList <IToken> tokens = new StringTokenizer()
.Add(":", "/")
.Parse(documentId);
int containerSymbolCount = tokens.Count(x => x.Value == ":");
if (containerSymbolCount > 1)
{
return(false, $"Invalid container, cannot have more then one ':', {syntax}");
}
if (containerSymbolCount == 1 && (tokens.Count <= 1 || tokens[1].Value != ":"))
{
return(false, $"Invalid container, {syntax}");
}
if (containerSymbolCount == 0 && tokens.Where(filterSyntax).Count() == 0)
{
return(false, $"No path, {syntax}");
}
if (tokens.Last().Value == ":")
{
return(false, $"Cannot end with ':', {syntax}");
}
if (tokens.Last().Value == "/")
{
return(false, $"Cannot end with '/', {syntax}");
}
string?error = tokens
.Where(filterSyntax)
.Select(x => testVector(x.Value))
.FirstOrDefault(x => x != null);
return(error != null ? (false, error) : (true, String.Empty));