#pragma once

#include <Windows.h>
#include <reshade.hpp>
#include <functional>

enum class Modifier {
    None = 0,
    Alt = 1 << 0,
    Ctrl = 1 << 1,
    Shift = 1 << 2
};

/**
 * @brief Registers a new hotkey for the plugin.
 *
 * This function adds a hotkey that will be checked every frame via
 * `ProcessHotkeys`. When the specified key (with optional modifiers)
 * is pressed, the provided callback will be executed.
 *
 * @param vk The virtual key code (e.g., VK_F1, VK_F2, etc.).
 * @param mods The modifier keys required to trigger the hotkey (ALT, CTRL, SHIFT).
 * @param callback The function to execute when the hotkey is pressed.
 *
 * @note The callback should be fast and must not block the main thread.
 * @note Hotkeys are only checked when `ProcessHotkeys` is called.
 */
void RegisterHotkey(int vk, Modifier mods, std::function<void()> callback);


/**
 * @brief Processes all registered hotkeys and executes their callbacks.
 *
 * This function should be called **once per frame**, typically in
 * `on_reshade_present`, to detect key presses and trigger callbacks.
 *
 * @param runtime Pointer to the `reshade::api::effect_runtime` object,
 *        required if a callback manipulates shaders or uniforms.
 *
 * @note If no hotkey is pressed, this function does nothing.
 * @note All hotkeys must have been previously registered with `RegisterHotkey`.
 */
void ProcessHotkeys(reshade::api::effect_runtime* runtime);