#include "HydraRenderer.h"
#include "../GlewIncludes.h"
#include "../windowmanager/HydraWindowManager.h"
#include "../engine/HydraEngine.h"

#include <GLMIncludes.h>

void GLAPIENTRY MessageCallback(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar* message, const void* userParam) 
{    
    std::cout << "[OpenGL Error](" << type << ") " << message << std::endl;
}

void HydraRenderer::Initialise(HydraRenderSettings render_settings)
{
    m_render_settings = render_settings;
    glewExperimental = GL_TRUE;
    GLenum res = glewInit();
    if (res != GLEW_OK)
    {

    }
    else
    {
        glCullFace(GL_BACK);
        glEnable(GL_CULL_FACE);
        
        glEnable(GL_DEPTH_TEST);
        glEnable(GL_DEBUG_OUTPUT);        
        glfwSwapInterval(1);
        glDebugMessageCallback(MessageCallback, 0);        
    }
}

// void HydraRenderer::BeginFrame()
// {
     
//     glViewport(0, 0, m_render_settings.ViewportWidth, m_render_settings.ViewportHeight);
    
//     glEnable(GL_BLEND);
//     glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);  
//     glClearColor(0.0f, 0.5f, 0.7f, 1.0f);
    
//     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    
// }

void HydraRenderer::EndFrame()
{
    HydraWindowManager* window_manager = GetEngine()->WindowManager();
    window_manager->Swap();
}