public SubscriptionBuilder FromSceneIf(SceneConfig.SceneIf sceneIf)
{
#region validate input
if (sceneIf == null)
{
throw new ArgumentNullException(nameof(sceneIf));
}
if (string.IsNullOrWhiteSpace(sceneIf.Topic))
{
throw new ArgumentException($"{nameof(sceneIf.Topic)} should not be both empty", nameof(sceneIf));
}
#endregion
return(FromTopic(sceneIf.Topic));
}
//todo refactor if else sequence
public static bool IsMatch(this SceneConfig.SceneIf i, MqttMessageEvent e, out string eventValue)
{
var iValue = i.Value;
eventValue = e.Message;
#region verify topic
if (!MqttHelper.IsSubscribed(i.Topic, e.Topic))
{
return(false);
}
#endregion
#region no value defined - true
if (string.IsNullOrWhiteSpace(iValue))
{
return(true);
}
#endregion
#region json member defined - look into message as json
if (!string.IsNullOrWhiteSpace(i.JsonMember))
{
try
{
var jo = JObject.Parse(e.Message);
if (jo.TryGetValue(i.JsonMember, out var jValue))
{
eventValue = jValue.Value <string>();
}
}
catch (JsonReaderException)
{
//todo handle
return(false);
}
}
#endregion
#region no special - check equal
if (!iValue.StartsWith(Specials.Key))
{
return(iValue.Equals(eventValue, StringComparison.InvariantCultureIgnoreCase));
}
#endregion
#region special operators - compare - enumerate compare map
//order from longest to shortest prefix to avoid invalid matches
foreach (var co in CompareOperatorsMap.OrderByDescending(x => x.Key.Length))
{
if (iValue.StartsWith(co.Key))
{
iValue = iValue.Remove(0, co.Key.Length).Trim();
if (decimal.TryParse(iValue, out var diValue) && decimal.TryParse(eventValue, out var deValue))
{
return(co.Value(diValue, deValue));
}
}
}
#endregion
#region special operators - simple text match
if (iValue.StartsWith(Specials.Match))
{
iValue = iValue.Remove(0, Specials.Match.Length).Trim();
return(SpecialsHelper.IsSimpleMatch(iValue, eventValue));
}
#endregion
return(false);
}
