#include "GLFWInputManager.h"

#include "Exception.h"

std::map<GLFWwindow*, GLFWInputManager*> GLFWInputManager::s_glfw_windows;

GLFWInputManager::~GLFWInputManager()
{
	s_glfw_windows.erase(m_p_window);
}

void GLFWInputManager::init(GLFWwindow* p_window)
{
	if (m_p_window != nullptr)
	{
		throw EXCEPTION("GLFWInputManager Already Initialized.");
	}
	m_p_window = p_window;
	s_glfw_windows.insert(std::map<GLFWwindow*, GLFWInputManager*>::value_type(m_p_window, this));
}

void GLFWInputManager::key_callback(GLFWwindow* p_window, int key, int scancode, int action, int mods)
{
	std::map<GLFWwindow*, GLFWInputManager*>::iterator iter = s_glfw_windows.find(p_window);
	if (iter == s_glfw_windows.end())
	{
		// Ignore Unknown Windows
		return;
	}
	GLFWInputManager& input_manager = *iter->second;
	if (action == GLFW_PRESS)
	{
		input_manager.key_down(key);
	}
	else if (action == GLFW_RELEASE)
	{
		input_manager.key_up(key);
	}
	else if (action == GLFW_REPEAT)
	{
		// Ignored
	}
	else
	{
		throw Exception("Invalid GLFW Key Action: " + std::to_string(action) + " (" + std::to_string(scancode) + ")", "class GLFWInputManager");
	}
	
}