#pragma once

#include "hardware.pb.h"
#include <FastLED.h>

/**
 * @class HardwareLed
 * @brief Manages an LED strip on ESP8266 using FastLED library.
 * Supports animations defined by hardware_LedConfig (static, pulse, fade, flicker).
 * Template parameter PIN specifies the GPIO pin at compile time.
 *
 * @tparam PIN The GPIO pin connected to the LED strip (e.g., 2 for D2 on ESP8266).
 */
template<uint8_t PIN>
class HardwareLed {
public:
    using AnimationCallback = void (*)();

    /**
     * @brief Constructor for HardwareLed.
     * @param numPixels Number of pixels in the strip (default: 1).
     */
    HardwareLed(uint8_t numPixels = 1);
    ~HardwareLed();
    void begin();
    void end();
    void update();
    void set(const hardware_LedConfig& config);
    void setAnimationCallback(AnimationCallback cb) { m_callback = cb; }
    float estimateCurrent_mA() const;

private:
    void applyStatic(const hardware_StaticParams& params);
    void applyPulse(const hardware_PulseParams& params);
    void applyFade(const hardware_FadeParams& params);
    void applyFlicker(const hardware_FlickerParams& params);
    void setColor(uint32_t color, uint8_t brightness = 255);
    uint32_t lerpColor(uint32_t color1, uint32_t color2, float t) const;

    CRGB* m_leds; // Dynamic array for pixel data
    uint8_t m_numPixels;
    hardware_LedConfig m_currentConfig = hardware_LedConfig_init_default;
    bool m_isActive;
    unsigned long m_startTime;
    uint8_t m_pulseState;
    unsigned long m_lastPulseTime;
    uint8_t m_fadeIndex;
    unsigned long m_lastFadeTime;
    uint32_t m_fadeCurrentColor;
    uint32_t m_fadeTargetColor;
    float m_fadeProgress;
    unsigned long m_fadeStartTime;
    AnimationCallback m_callback = nullptr;
};