#include <iostream>
#include "IImage.h"
#include "ITexture.h"
#include "IAnimation.h"
#include "IWindow.h"
#include "ISceneGraph.h"
#include "OpenGL.h"

Resource<IMesh> rectangle()
{
    static const float location[] = {0, 0, 100, 0, 0, 100, 100, 100};
    static unsigned short index[] = {0, 1, 3, 3, 2, 4};

    std::vector<SMeshVertex> vertices(4);
    for(unsigned int i = 0; i < 4; i++)
        vertices[i] = SMeshVertex(location[i*2], location[i*2+1], location[i*2] > 0, location[i*2+1] > 0);

    std::vector<unsigned short> indices(index, &index[6]);

    Resource<IMesh> mesh = IMesh::create();
    mesh->fillVertices(vertices);
    mesh->fillIndices(indices);

    return mesh;
}

int main()
{
    Resource<IWindow> window = IWindow::create();
    window->open();

    Resource<IMesh> mesh = rectangle();

    Resource<IImage> image = IImage::get("data/images/sprite1.png");

    Resource<ITexture> texture = ITexture::create();
    texture->fromImage(image);

    Resource<IShader> shader = IShader::create();
    std::string error;
    if(!shader->addSource(EShaderType_Fragment, "data/shaders/shader.frag", error))
        std::cout << error;

    if(!shader->addSource(EShaderType_Vertex, "data/shaders/shader.vert", error))
        std::cout << error;

    shader->link();

    Resource<IAnimation> anim = IAnimation::create();
    anim->fromFile("data/animations/rotate.anim");

    Resource<ISceneNode> body = ISceneNode::create();
    body->setMesh(mesh);
    body->setTexture(texture);
    body->setShader(shader);
    body->setName("mainBone");

    Resource<ISceneNode> left = ISceneNode::create();
    left->setMesh(mesh);
    left->setName("leftArm");

    Resource<ISceneNode> right = ISceneNode::create();
    right->setMesh(mesh);
    right->setName("rightArm");

    Resource<ISceneNode> root = ISceneNode::create();
    root->addNode(body);
    body->addNode(right);
    body->addNode(left);

    float t = 0.0f;
    while(t += 0.01f)
    {

        anim->apply(body, t);

        glClear(GL_COLOR_BUFFER_BIT);
        root->render();
        window->pollEvents();
    }

    return 0;
}