#include "GLFWInputManager.h"

#include "Exception.h"

namespace charcoal
{
	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())
			return; // Ignore Unknown Windows
		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) + ")");

	}
}