public MidgeCommandInvoker Create(ClientMessage clientMessage)
{
MidgeControllerInfo controllerInfo = ControllerParser.GetController(clientMessage.Controller);
MidgeCommandInfo commandInfo = controllerInfo.GetCommandByName(clientMessage.Command);
if (commandInfo == null)
{
throw new MidgeException("Command undefined");
}
List <object> args = new List <object>();
foreach (var param in commandInfo.Params.OrderBy(i => i.Order))
{
var userParam = clientMessage.Parameters.FirstOrDefault(i =>
i.Name.Equals(param.Name, StringComparison.OrdinalIgnoreCase));
if (userParam == null && param.IsRequired)
{
throw new MidgeException($"Parameter not found. Param name: {param.Name}");
}
Type actualParamType = param.ParamType;
if (userParam == null)
{
args.Add(null);
continue;
}
if (param.ParamType.IsGenericType && param.ParamType.GetGenericTypeDefinition() == typeof(Nullable <>))
{
actualParamType = param.ParamType.GetGenericArguments()[0];
}
object argument;
try
{
argument = userParam.Value.ToObject(actualParamType);
if (actualParamType.IsEnum)
{
if (!Enum.IsDefined(actualParamType, argument))
{
throw new Exception("Invalid value");
}
argument = Enum.ToObject(actualParamType, (int)argument);
}
}
catch
{
throw new MidgeException($"Parameter {param.Name} has invalid type. Expected type is {actualParamType.Name}");
}
args.Add(argument);
}
return(new MidgeCommandInvoker(controllerInfo, commandInfo, args.ToArray()));
}
public MidgeCommandInvoker(MidgeControllerInfo controller, MidgeCommandInfo command, object[] args)
{
Controller = controller;
Command = command;
_args = args;
}