#include <typeinfo>
#include <iostream>
#include "Scene.h"
#include "Light.h"
#include "parser/parser.h"
#include "parser/nodes.h"

using namespace std;

void Scene::load(const char * filename)
{
    refptr<Node> node = parse(filename);
    processNode(node);


    /* TODO: parse file somehow */
    refptr<Shape> plane = new Plane(0, 0, 1, -2);
    m_shapes.push_back(plane);

    refptr<Material> m = new Material();
    m->setDiffuseColor(Color::red);
    m->setAmbientColor(Color::red);

    refptr<Shape> shape = new Sphere(1.0);
    m_transform.translate(1.0, 5.0, 0.5);
    shape->setTransform(m_transform);
    shape->setMaterial(m);
    m_shapes.push_back(shape);

    m = new Material();
    m->setDiffuseColor(Color::blue);
    m->setAmbientColor(Color::blue);

    shape = new Box(new Vector(1.8, 1.8, 0.5));
    m_transform.translate(0, 0, -2.0);
    shape->setTransform(m_transform);
    shape->setMaterial(m);
    m_shapes.push_back(shape);

    m = new Material();
    m->setDiffuseColor(Color::cyan);
    m->setAmbientColor(Color::cyan);

    shape = new Cyl(1.0, 0.0, 2.0);
    m_transform.translate(-1.3, 2.5, 3.5);
    m_transform.rotate(45, 1, 0, 0);
    shape->setTransform(m_transform);
    shape->setMaterial(m);
    m_shapes.push_back(shape);

    m = new Material();
    m->setDiffuseColor(Color::yellow);
    m->setAmbientColor(Color::yellow);

    shape = new Box(new Vector(1, 1, 1));
    m_transform.rotate(-45, 1, 0, 0);
    m_transform.translate(-1.7, -0.5, -2.0);
    m_transform.rotate(45, 0, 0, 1);
    m_transform.rotate(45, 1, 0, 0);
    shape->setTransform(m_transform);
    shape->setMaterial(m);
    m_shapes.push_back(shape);

    refptr<Light> light = new PointLight();
    light->setPosition(Vector(2, -1, 2));
    m_lights.push_back(light);
}

void Scene::processNode(refptr<Node> node)
{
    if (node.isNull())
        return;

    if      ( typeid(*node) == typeid(SceneNode) )
    {
        processChildren(node);
    }
    else if ( typeid(*node) == typeid(BoxNode) )
    {
        cout << "saw a box" << endl;
    }
    else if ( typeid(*node) == typeid(PlaneNode) )
    {
        cout << "saw a plane" << endl;
    }
    else if ( typeid(*node) == typeid(SphereNode) )
    {
        cout << "saw a sphere" << endl;
    }

}

void Scene::processChildren(refptr<Node> node)
{
    std::vector< refptr<Node> > & children = node->getChildren();
    for (int i = 0, sz = children.size(); i < sz; i++)
    {
        processNode(children[i]);
    }
}

refptr<Material> processMaterial(refptr<Node> node)
{
    if (typeid(*node) != typeid(MaterialNode))
        return refptr<Material>(NULL);

    refptr<Material> material = new Material();

    /* TODO: finish */

    return material;
}

refptr<Shape> processBox(refptr<Node> node)
{
    /* TODO: finish */
    return refptr<Shape>(NULL);
}

refptr<Shape> processCyl(refptr<Node> node)
{
    /* TODO: finish */
    return refptr<Shape>(NULL);
}

refptr<Light> processLight(refptr<Node> node)
{
    /* TODO: finish */
    return refptr<Light>(NULL);
}

refptr<Shape> processPlane(refptr<Node> node)
{
    /* TODO: finish */
    return refptr<Shape>(NULL);
}

refptr<Shape> processSphere(refptr<Node> node)
{
    /* TODO: finish */
    return refptr<Shape>(NULL);
}