using System;

namespace ModuleManager.Patches

{

public interface IPatchCompiler

{

IPatch CompilePatch(ProtoPatch protoPatch);

}

public class PatchCompiler : IPatchCompiler

{

public IPatch CompilePatch(ProtoPatch protoPatch)

{

if (protoPatch == null) throw new ArgumentNullException(nameof(protoPatch));

switch (protoPatch.command)

{

case Command.Insert:

return new InsertPatch(protoPatch.urlConfig, protoPatch.nodeType, protoPatch.passSpecifier);

case Command.Edit:

return new EditPatch(protoPatch.urlConfig, new NodeMatcher(protoPatch.nodeType, protoPatch.nodeName, protoPatch.has), protoPatch.passSpecifier);

case Command.Copy:

return new CopyPatch(protoPatch.urlConfig, new NodeMatcher(protoPatch.nodeType, protoPatch.nodeName, protoPatch.has), protoPatch.passSpecifier);

case Command.Delete:

return new DeletePatch(protoPatch.urlConfig, new NodeMatcher(protoPatch.nodeType, protoPatch.nodeName, protoPatch.has), protoPatch.passSpecifier);

default:

throw new ArgumentException("has an invalid command for a root node: " + protoPatch.command, nameof(protoPatch));

}

}

}

}