public static string Serialize(this IGraphQLField field, string operationType = "query", string operationName = null, IEnumerable <IGraphQLVariable> variables = null)
{
var vardeclaration = variables == null ? null : " (" + string.Join(" ", variables.Select(s => $"${s.VariableId}: {s.VariableType}")) + ")";
var sb = new StringBuilder($"{operationType} {operationName} {vardeclaration}{{");
field.SerializeInto(sb, Ident);
sb.AppendLine("}");
return(sb.ToString());
}
internal static IGraphQLField GetLastField(this IGraphQLField field)
{
IGraphQLField prev = null;
while (field != null)
{
prev = field;
field = field.SubFields?.SingleOrDefault();
}
return(prev);
}
internal static IEnumerable <string> GetBindingPath(this IGraphQLField field)
{
List <string> path = null;
while (field != null)
{
if (field.Name != null)
{
(path ?? (path = new List <string>())).Add(field.Alias ?? field.Name);
}
field = field.SubFields?.SingleOrDefault();
}
return(path);
}
static void SerializeInto(this IGraphQLField field, StringBuilder sb, int identation)
{
sb.AppendLine();
sb.Append(new string(' ', identation));
if (field.Name == null)
{
if (!field.SubFields?.Any() ?? true)
{
return;
}
foreach (var f in field.SubFields)
{
f.SerializeInto(sb, identation + Ident);
}
sb.AppendLine();
return;
}
if (field.Alias != null)
{
sb.Append($"{field.Alias}: ");
}
sb.Append(field.Name);
if (field.Argument != null)
{
sb.Append($" ({field.Argument})");
}
if (!field.SubFields?.Any() ?? true)
{
return;
}
sb.Append(" {");
foreach (var f in field.SubFields)
{
f.SerializeInto(sb, identation + Ident);
}
sb.AppendLine();
sb.Append(new string(' ', identation));
sb.AppendLine("}");
}
