/// <summary>
/// Returns the property value in a fresh instance of the class or null
/// if it doesn't exists
/// </summary>
/// <typeparam name="T">Type of the property</typeparam>
/// <param name="type">Type to get the property from</param>
/// <param name="propName">Property name</param>
private static T GetPropertyValueOrDefault <T> (Type type, String propName, MangaConnector inst) where T : class
{
// Attempts to get the property descriptor
var prop = type.GetProperty(propName);
if (prop == null)
{
return(null); // Null for classes and idk what for other types
}
// Gets the value and attempts to convert it to T (as returns null
// upon failure)
var value = prop.GetValue(inst);
return(value as T);
}
/// <summary>
/// Checks a connector for exposed properties and methods, and throws an
/// exception when one of them is missing
/// </summary>
/// <param name="connType">Connector's <see cref="Type" /></param>
private static void ValidateConnector(Type connType, MangaConnector inst)
{
// Properties being checked
var properties = new[]
{
"ID",
"Website"
};
// Checks each of them
foreach (var property in properties)
{
var propVal = GetPropertyValueOrDefault <String> (connType, property, inst);
if (propVal == null)
{
throw new Exception($"Connector is missing the \"{property}\" property or value is null.");
}
}
// Methods being checked
var methods = new[]
{
"InitHTTP",
//"DownloadChapterAsync", // -> moved to base class
"UpdateMangaListAsync",
"GetChaptersAsync",
"GetPageLinksAsync",
"GetImageLinkAsync"
};
// Checks each of them
foreach (var method in methods)
{
if (!MethodExists(connType, method))
{
throw new Exception($"Connector is missing the \"{method}\" method.");
}
}
}