private Expression <Predicate <Ephemerides> > GetTimePredicate(string ephemerisKey, SmartFilterItem item)
{
if (item.Operator == "=")
{
return(x => !double.IsNaN(x.GetValue <Date>(ephemerisKey).Day) && TimeSpan.FromDays(x.GetValue <Date>(ephemerisKey).Time).ToString(@"hh\:mm") == TimeSpan.Parse(item.Value).ToString(@"hh\:mm"));
}
if (item.Operator == ">")
{
return(x => !double.IsNaN(x.GetValue <Date>(ephemerisKey).Day) && TimeSpan.FromDays(x.GetValue <Date>(ephemerisKey).Time) > TimeSpan.Parse(item.Value));
}
if (item.Operator == "<")
{
return(x => !double.IsNaN(x.GetValue <Date>(ephemerisKey).Day) && TimeSpan.FromDays(x.GetValue <Date>(ephemerisKey).Time) < TimeSpan.Parse(item.Value));
}
else
{
throw new ArgumentException($"Unknown operator {item.Operator} for {item.Property} property.");
}
}
protected override Expression <Predicate <Ephemerides> > BuildPredicate(SmartFilterItem item)
{
switch (item.Property)
{
case "name":
if (item.Operator == "=")
{
return(x => x.CelestialObject.Names.Any(n => n.StartsWith(item.Value, StringComparison.OrdinalIgnoreCase)));
}
else
{
throw new ArgumentException($"Unknown operator {item.Operator} for {item.Property} property.");
}
case "type":
if (item.Operator == "=")
{
return(x => x.CelestialObject.Type.Equals(item.Value, StringComparison.OrdinalIgnoreCase));
}
else
{
throw new ArgumentException($"Unknown operator {item.Operator} for {item.Property} property.");
}
case "con":
case "const":
case "constellation":
if (item.Operator == "=")
{
return(x => x.GetValue <string>("Constellation").Equals(item.Value, StringComparison.OrdinalIgnoreCase));
}
else
{
throw new ArgumentException($"Unknown operator {item.Operator} for {item.Property} property.");
}
case "mag":
case "magnitude":
if (item.Operator == "=")
{
return(x => x.GetValue <float?>("Magnitude") != null?Math.Round(x.GetValue <float?>("Magnitude").Value, 2) == float.Parse(item.Value, CultureInfo.InvariantCulture) : false);
}
else if (item.Operator == ">")
{
return(x => x.GetValue <float?>("Magnitude") > float.Parse(item.Value, CultureInfo.InvariantCulture));
}
else if (item.Operator == "<")
{
return(x => x.GetValue <float?>("Magnitude") < float.Parse(item.Value, CultureInfo.InvariantCulture));
}
else
{
throw new ArgumentException($"Unknown operator {item.Operator} for {item.Property} property.");
}
case "begin":
return(GetTimePredicate("Observation.Begin", item));
case "best":
return(GetTimePredicate("Observation.Best", item));
case "end":
return(GetTimePredicate("Observation.End", item));
case "alt":
if (item.Operator == "=")
{
return(x => x.GetValue <double?>("Observation.BestAltitude") != null?Math.Round(x.GetValue <double?>("Observation.BestAltitude").Value) == double.Parse(item.Value, CultureInfo.InvariantCulture) : false);
}
else if (item.Operator == ">")
{
return(x => x.GetValue <double?>("Observation.BestAltitude") > double.Parse(item.Value, CultureInfo.InvariantCulture));
}
else if (item.Operator == "<")
{
return(x => x.GetValue <double?>("Observation.BestAltitude") < double.Parse(item.Value, CultureInfo.InvariantCulture));
}
else
{
throw new ArgumentException($"Unknown operator {item.Operator} for {item.Property} property.");
}
case "dur":
case "duration":
if (item.Operator == "=")
{
return(x => Math.Round(x.GetValue <double>("Observation.Duration"), 1) == double.Parse(item.Value, CultureInfo.InvariantCulture));
}
else if (item.Operator == ">")
{
return(x => x.GetValue <double?>("Observation.Duration") > double.Parse(item.Value, CultureInfo.InvariantCulture));
}
else if (item.Operator == "<")
{
return(x => x.GetValue <double?>("Observation.Duration") < double.Parse(item.Value, CultureInfo.InvariantCulture));
}
else
{
throw new ArgumentException($"Unknown operator {item.Operator} for {item.Property} property.");
}
case "rise":
return(GetTimePredicate("RTS.Rise", item));
case "transit":
return(GetTimePredicate("RTS.Transit", item));
case "set":
return(GetTimePredicate("RTS.Set", item));
case "ra":
if (item.Operator == "=")
{
return(x => Math.Round(x.GetValue <double>("Equatorial.Alpha")) / 15 == double.Parse(item.Value, CultureInfo.InvariantCulture));
}
else if (item.Operator == ">")
{
return(x => x.GetValue <double>("Equatorial.Alpha") / 15 > double.Parse(item.Value, CultureInfo.InvariantCulture));
}
else if (item.Operator == "<")
{
return(x => x.GetValue <double>("Equatorial.Alpha") / 15 < double.Parse(item.Value, CultureInfo.InvariantCulture));
}
else
{
throw new ArgumentException($"Unknown operator {item.Operator} for {item.Property} property.");
}
case "dec":
if (item.Operator == "=")
{
return(x => Math.Round(x.GetValue <double>("Equatorial.Delta")) == double.Parse(item.Value, CultureInfo.InvariantCulture));
}
else if (item.Operator == ">")
{
return(x => x.GetValue <double>("Equatorial.Delta") > double.Parse(item.Value, CultureInfo.InvariantCulture));
}
else if (item.Operator == "<")
{
return(x => x.GetValue <double>("Equatorial.Delta") < double.Parse(item.Value, CultureInfo.InvariantCulture));
}
else
{
throw new ArgumentException($"Unknown operator {item.Operator} for {item.Property} property.");
}
default:
throw new ArgumentException($"Unknown property {item.Property}.");
}
}