/**
 * @file EffectProcessor.h
 * @author Gustice
 * @brief Effect-Processor-Class for processing effect scenarios and switching actions
 *
 * @copyright Copyright (c) 2024
 */
#pragma once

#include "Color.hpp"
#include "Macro.hpp"
#include "StateMachine.hpp"
#include <array>
#include <cstdint>

namespace Effect {

    /**
     * @brief EffectProcessor Class
     * @details Maintains State-Machines, Processes effect-switching, and invokes generation
     *  of raw data stream for LEDs.
     *      \li If effect scenarios are changed a cross-fading is executed
     *      \li Raw-data-stream for each Color object is generated
     */
    class EffectProcessor {
      public:
        ///@brief Constructor
        ///@param fadeSteps Steps count for cross fade
        EffectProcessor(uint8_t const fadeSteps = 8);

        /// @brief Set next effect sequence
        /// @param sequence reference to sequence that has to be processed next
        /// @param sColor Start color. Use noColor to start with default color
        /// @param intens Idle intensity for effect. Use NULL to start with default intensity
        void setEffect(const Macro &sequence, Color const *sColor = noColor, uint8_t delay = 0, uint8_t intens = gu8_idleIntensity);

        /// @brief Execute step of effect processor
        /// @return Reference to color result
        Color tick(void);

      private:
        StateMachine::Parameter _parameter;
        std::array<StateMachine, 2> _effectMachines;
        uint8_t _fadeSteps;
        uint8_t _fadingCnt;
        StateMachine *_EffPV;
        StateMachine *_EffPV_old;

        Color crossFadeColors(Color &cNew, Color &cOld, uint8_t k);
        EffectProcessor();
    };

} // namespace Effect