#include "shaders/IShaderGraphNodePort.h"
#include <assert.h>

namespace LifeGraphics
{
	IShaderGraphNodePort::IShaderGraphNodePort(IShaderGraphNode* parent)
		:Parent(parent)
	{
		assert(parent != nullptr && "Shader graph node port parent is nullptr!");
	}

    IShaderGraphNodePort* IShaderGraphNodePort::GetLink(size_t id)
    {
        return links[id];
    }
    size_t IShaderGraphNodePort::GetLinkCount()
    {
        return links.size();
    }
    void IShaderGraphNodePort::MakeLink(IShaderGraphNodePort* input, IShaderGraphNodePort* output)
    {
       // assert(target != nullptr && "Failed on add link on IShaderGraphNodePort");
        if(!input->IsLinkExists(output))
            input->links.push_back(output);

        if(!output->IsLinkExists(input))
            output->links.push_back(input);
    }
    bool IShaderGraphNodePort::IsLinkExists(IShaderGraphNodePort* target)
    {
        for(LinkCollectonItr it = links.begin(); it != links.end(); ++it)
        {
            if(*it == target)
                return true;
        }
        return false;
    }
    void IShaderGraphNodePort::BreakLink()
    {
        //remove self from remote ports
        for(LinkCollectonItr it = links.begin(); it != links.end(); ++it) {
            (*it)->RemoveLink(this);
        }
        //clear list of remote ports
        links.clear();
    }
    void IShaderGraphNodePort::RemoveLink(IShaderGraphNodePort* target)
    {
        for(LinkCollectonItr it = links.begin(); it != links.end(); ++it)
        {
            IShaderGraphNodePort* lnk = *it;
            if(lnk == target){
                links.erase(it);
                return;
            }
        }
    }
}