public bool RemoveFact(Guid factId)
{
var result = false;
try
{
if (_container == null)
{
_container = LoadFacts();
}
if (_container != null)
{
result = _container.Remove(factId);
if (result)
{
SaveFacts(_container);
}
}
}
catch
{
}
return(result);
}
public bool RegisterFact(Fact fact)
{
var result = false;
try
{
if (_container == null)
{
_container = LoadFacts();
if (_container == null)
{
_container = new FactContainer();
}
}
_container.Remove(fact.Id);
_container.Add(fact);
SaveFacts(_container);
result = true;
}
catch
{
}
return(result);
}
private static void SaveFacts([NotNull] FactContainer container)
{
StringBuilder sb = new StringBuilder();
StringWriter sw = new StringWriter(sb);
using (JsonWriter writer = new JsonTextWriter(sw))
{
var serializer = new JsonSerializer {
TypeNameHandling = TypeNameHandling.Auto, Formatting = Formatting.Indented
};
serializer.Serialize(writer, container);
}
var buf = Encoding.Unicode.GetBytes(sb.ToString());
var result = new byte[buf.Length + 2];
result[0] = 0xFF;
result[1] = 0xFE;
buf.CopyTo(result, 2);
var fileName = Path.Combine(ExtensionUtils.ExtensionConfigurationFolder, cLocalFactsFileName);
File.WriteAllBytes(fileName, result);
}
public Fact GetFact(Guid id)
{
if (_container == null)
{
_container = LoadFacts();
}
return(_container?.Facts?.FirstOrDefault(x => x.Id == id));
}
public IEnumerable <Fact> GetFacts(string context, IEnumerable <string> tags = null, string filter = null, bool includeObsolete = false)
{
if (_container == null)
{
_container = LoadFacts();
}
return(_container?.Facts?
.Where(x => (includeObsolete || !x.Obsolete) &&
string.Compare(context, x.Context, StringComparison.InvariantCultureIgnoreCase) == 0 &&
x.Tags.Any(y => tags?.Contains(y) ?? true) &&
(string.IsNullOrWhiteSpace(filter) ||
(x.Name?.ToLower().Contains(filter.ToLower()) ?? false) ||
(x.Source?.ToLower().Contains(filter.ToLower()) ?? false) ||
(x.Details?.ToLower().Contains(filter.ToLower()) ?? false))));
}
private static FactContainer LoadFacts()
{
FactContainer result = null;
var fileName = Path.Combine(ExtensionUtils.ExtensionConfigurationFolder, cLocalFactsFileName);
string jsonText = null;
if (File.Exists(fileName))
{
var json = File.ReadAllBytes(fileName);
if (json[0] == 0xFF)
{
jsonText = Encoding.Unicode.GetString(json, 2, json.Length - 2);
}
else
{
jsonText = Encoding.Unicode.GetString(json);
}
try
{
using (var textReader = new StringReader(jsonText))
using (var reader = new JsonTextReader(textReader))
{
var serializer = new JsonSerializer
{
TypeNameHandling = TypeNameHandling.Auto,
SerializationBinder = new KnownTypesBinder()
};
result = serializer.Deserialize <FactContainer>(reader);
}
}
catch
{
}
}
return(result);
}
