// =============================================
//  Aster: window.cpp
//  Copyright (c) 2020-2024 Anish Bhobe
// =============================================

#include "window.h"

#include "context.h"
#include "logger.h"

std::atomic_uint64_t Window::m_WindowCount = 0;
std::atomic_bool Window::m_IsGlfwInit = false;

void
Window::RequestExit() const noexcept
{
    glfwSetWindowShouldClose(m_Window, true);
}

void
Window::SetWindowSize(const vk::Extent2D &extent) const noexcept
{
    SetWindowSize(extent.width, extent.height);
}

void
Window::SetWindowSize(const u32 width, const u32 height) const noexcept
{
    glfwSetWindowSize(m_Window, Cast<i32>(width), Cast<i32>(height));
}

Size2D
Window::GetSize() const
{
    int width;
    int height;
    glfwGetFramebufferSize(m_Window, &width, &height);
    return {Cast<u32>(width), Cast<u32>(height)};
}

Window::Window(const cstr title, Size2D extent, const b8 isFullScreen)
{
    m_Name = title;

    if (!m_IsGlfwInit)
    {
        if (!glfwInit())
        {
            const char *error = nullptr;
            const auto code = glfwGetError(&error);
            ERROR("GLFW Init failed. Cause: ({}) {}", code, error)
            THEN_ABORT(code);
        }
        m_WindowCount = 0;
        m_IsGlfwInit = true;
    }

    GLFWmonitor *monitor = glfwGetPrimaryMonitor();
    ERROR_IF(!monitor, "No monitor found");

    i32 windowX, windowY, windowWidth, windowHeight;
    glfwGetMonitorWorkarea(monitor, &windowX, &windowY, &windowWidth, &windowHeight);

    glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
    glfwWindowHint(GLFW_CENTER_CURSOR, GLFW_TRUE);

    m_Window = glfwCreateWindow(Cast<i32>(extent.m_Width), Cast<i32>(extent.m_Height), m_Name.c_str(),
                                isFullScreen ? monitor : nullptr, nullptr);
    ERROR_IF(m_Window == nullptr, "Window creation failed")
    ELSE_DEBUG("Window '{}' created with resolution '{}x{}'", m_Name, extent.m_Width, extent.m_Height);
    if (m_Window == nullptr)
    {
        const char *error = nullptr;
        const auto code = glfwGetError(&error);
        ERROR("GLFW Window Creation failed. Cause: ({}) {}", code, error)
        THEN_ABORT(code);
    }

    if (isFullScreen == false)
    {
        glfwSetWindowPos(m_Window, Cast<i32>(windowWidth - extent.m_Width) / 2,
                         Cast<i32>(windowHeight - extent.m_Height) / 2);
    }
    glfwSetInputMode(m_Window, GLFW_CURSOR, GLFW_CURSOR_NORMAL);

    ++m_WindowCount;
}

Window::~Window()
{
    if (m_Window)
    {
        glfwDestroyWindow(m_Window);
        m_Window = nullptr;

        --m_WindowCount;
    }

    if (m_WindowCount== 0 && m_IsGlfwInit)
    {
        glfwTerminate();
        m_IsGlfwInit = false;
    }

    DEBUG("Window '{}' Destroyed", m_Name);
}

Window::Window(Window &&other) noexcept
    : m_Window(Take(other.m_Window))
    , m_Name(Take(other.m_Name))
{
}

Window &
Window::operator=(Window &&other) noexcept
{
    if (this == &other)
        return *this;
    m_Window = Take(other.m_Window);
    m_Name = Take(other.m_Name);
    return *this;
}