#pragma once

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

using OSDUpdateFn = std::function<void(reshade::api::effect_runtime*)>;
using OSDEndFn = std::function<void(reshade::api::effect_runtime*)>;

/**
 * @brief Displays an On-Screen Display (OSD) for a specified duration.
 *
 * This function triggers an OSD that lasts for `duration` seconds.
 * During the OSD display, the `onUpdate` callback will be called every frame
 * with the current `reshade::api::effect_runtime` pointer, allowing shader updates
 * or other visual effects. When the OSD duration ends, the `onEnd` callback
 * is executed to perform any cleanup or final state updates.
 * @param duration Duration in seconds for which the OSD should be visible.
 * @param onUpdate Callback executed each frame while the OSD is visible.
 * @param onEnd Callback executed once when the OSD ends or expires.
 * @note This function only schedules the OSD. The actual frame updates occur
 *       during `UpdateOSD`, which must be called once per frame.
 * @note Callbacks should be fast and non-blocking.
 */
void ShowOSD(float duration, OSDUpdateFn onUpdate, OSDEndFn onEnd);


/**
 * @brief Updates the OSD system each frame and executes callbacks if needed.
 *
 * This function must be called once per frame, typically in `on_reshade_present`,
 * to update any active OSDs, decrement their timers, and call the
 * `onUpdate` and `onEnd` callbacks as necessary.
 * @param runtime Pointer to the current `reshade::api::effect_runtime` object.
 * @param deltaTime Time elapsed (in seconds) since the last frame.
 * @note If no OSD is active, this function does nothing.
 * @note Always call this function after processing hotkeys to ensure proper
 *       timing of OSDs.
 */
void UpdateOSD(reshade::api::effect_runtime* runtime, float deltaTime);

/**
 * @brief Reset all uniform variables enumerated.
 *
 * This function must be called once, typically in `on_reshade_begin_effects`,
 * using an atomic compare-and-exchange operation
 * @param runtime Pointer to the current `reshade::api::effect_runtime` object.
 * @param effect_name File name of the effect file to enumerate uniform variables from (eg. myfile.fx)
 */
void ResetAllUniformVariables(reshade::api::effect_runtime* runtime, const char* effect_name);