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Lidarr/NzbDrone.Api/Mapping/CloneInjection.cs

102 lines
3.5 KiB

using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using Marr.Data;
using Omu.ValueInjecter;
namespace NzbDrone.Api.Mapping
{
public class CloneInjection : ConventionInjection
{
protected override bool Match(ConventionInfo conventionInfo)
{
return conventionInfo.SourceProp.Name == conventionInfo.TargetProp.Name &&
conventionInfo.SourceProp.Value != null;
}
protected override object SetValue(ConventionInfo conventionInfo)
{
if (conventionInfo.SourceProp.Type == conventionInfo.TargetProp.Type)
return conventionInfo.SourceProp.Value;
if (conventionInfo.SourceProp.Type.IsArray)
{
var array = (Array)conventionInfo.SourceProp.Value;
var clone = (Array)array.Clone();
for (var index = 0; index < array.Length; index++)
{
var item = array.GetValue(index);
if (!item.GetType().IsValueType && !(item is string))
{
clone.SetValue(Activator.CreateInstance(item.GetType()).InjectFrom<CloneInjection>(item), index);
}
}
return clone;
}
if (conventionInfo.SourceProp.Type.IsGenericType)
{
var genericInterfaces = conventionInfo.SourceProp.Type.GetGenericTypeDefinition().GetInterfaces();
if (genericInterfaces.Any(d => d == typeof(IEnumerable)))
{
return MapLists(conventionInfo);
}
if (genericInterfaces.Any(i => i == typeof(ILazyLoaded)))
{
return MapLazy(conventionInfo);
}
//unhandled generic type, you could also return null or throw
return conventionInfo.SourceProp.Value;
}
//for simple object types create a new instace and apply the clone injection on it
return Activator.CreateInstance(conventionInfo.TargetProp.Type)
.InjectFrom<CloneInjection>(conventionInfo.SourceProp.Value);
}
private static object MapLazy(ConventionInfo conventionInfo)
{
var genericArgument = conventionInfo.SourceProp.Type.GetGenericArguments()[0];
dynamic lazy = conventionInfo.SourceProp.Value;
if (lazy.IsLoaded && conventionInfo.TargetProp.Type.IsAssignableFrom(genericArgument))
{
return lazy.Value;
}
return null;
}
private static object MapLists(ConventionInfo conventionInfo)
{
var genericArgument = conventionInfo.TargetProp.Type.GetGenericArguments()[0];
if (genericArgument.IsValueType || genericArgument == typeof(string))
{
return conventionInfo.SourceProp.Value;
}
var listType = typeof(List<>).MakeGenericType(genericArgument);
var addMethod = listType.GetMethod("Add");
var result = Activator.CreateInstance(listType);
foreach (var sourceItem in (IEnumerable)conventionInfo.SourceProp.Value)
{
var e = Activator.CreateInstance(genericArgument).InjectFrom<CloneInjection>(sourceItem);
addMethod.Invoke(result, new[] {e });
}
return result;
}
}
}