#include "gfx.hpp"

#include <GLFW/glfw3.h>

#include "platform.hpp"

int oldWindowX = 0, oldWindowY = 0;

void GFX::MakeContextCurrent()
{
    glfwMakeContextCurrent(static_cast<GLFWwindow*>(Platform::GetUserData()));
    glfwSwapInterval(1);
}

void GFX::SwapBuffers()
{
    glfwSwapBuffers(static_cast<GLFWwindow*>(Platform::GetUserData()));
}

void GFX::GoFullscreen()
{
    GLFWwindow* window = static_cast<GLFWwindow*>(Platform::GetUserData());

    glfwGetWindowPos(window, &oldWindowX, &oldWindowY); //save window pos for later
    const GLFWvidmode* videoMode = glfwGetVideoMode(glfwGetPrimaryMonitor());

    glfwSetWindowMonitor(window, glfwGetPrimaryMonitor(), 0, 0, videoMode->width, videoMode->height, videoMode->refreshRate);
}

void GFX::ExitFullscreen()
{
    GLFWwindow* window = static_cast<GLFWwindow*>(Platform::GetUserData());

    if(oldWindowX == 0 || oldWindowY == 0)
        glfwGetWindowPos(window, &oldWindowX, &oldWindowY); //save window pos

    glfwSetWindowMonitor(window, nullptr, oldWindowX, oldWindowY, 1600, 900, GLFW_DONT_CARE);
}

VkSurfaceKHR GFX::CreateVulkanSurface(VkInstance instance)
{
    VkSurfaceKHR surface;
    glfwCreateWindowSurface(instance, static_cast<GLFWwindow*>(Platform::GetUserData()), nullptr, &surface);

    return surface;
}