#include <Arduino.h>
#include "settings.h"
#include "RotaryEncoder.h"
#include "AudioPlayer.h"
#include "Log.h"
#include "System.h"

#ifdef USEROTARY_ENABLE
#include <ESP32Encoder.h>
#endif

// Rotary encoder-configuration
#ifdef USEROTARY_ENABLE
    ESP32Encoder encoder;
    // Rotary encoder-helper
    int32_t lastEncoderValue;
    int32_t currentEncoderValue;
    int32_t lastVolume = -1;                                // Don't change -1 as initial-value!
#endif

void RotaryEncoder_Init(void) {
    // Init rotary encoder
    #ifdef USEROTARY_ENABLE
        encoder.attachHalfQuad(ROTARYENCODER_CLK, ROTARYENCODER_DT);
        encoder.clearCount();
        encoder.setCount(AudioPlayer_GetInitVolume() * 2); // Ganzes Raster ist immer +2, daher initiale Lautstärke mit 2 multiplizieren
    #endif
}

void RotaryEncoder_Readjust(void) {
    #ifdef USEROTARY_ENABLE
        encoder.clearCount();
        encoder.setCount(AudioPlayer_GetCurrentVolume() * 2);
    #endif
}

// Handles volume directed by rotary encoder
void RotaryEncoder_Cyclic(void) {
    #ifdef USEROTARY_ENABLE
        if (System_AreControlsLocked()) {
            encoder.clearCount();
            encoder.setCount(AudioPlayer_GetCurrentVolume() * 2);
            return;
        }

        currentEncoderValue = encoder.getCount();
        // Only if initial run or value has changed. And only after "full step" of rotary encoder
        if (((lastEncoderValue != currentEncoderValue) || lastVolume == -1) && (currentEncoderValue % 2 == 0)) {
            System_UpdateActivityTimer(); // Set inactive back if rotary encoder was used
            if ((AudioPlayer_GetMaxVolume() * 2) < currentEncoderValue) {
                encoder.clearCount();
                encoder.setCount(AudioPlayer_GetMaxVolume() * 2);
                Log_Println((char *) FPSTR(maxLoudnessReached), LOGLEVEL_INFO);
                currentEncoderValue = encoder.getCount();
            } else if (currentEncoderValue < AudioPlayer_GetMinVolume()) {
                encoder.clearCount();
                encoder.setCount(AudioPlayer_GetMinVolume());
                Log_Println((char *) FPSTR(minLoudnessReached), LOGLEVEL_INFO);
                currentEncoderValue = encoder.getCount();
            }
            lastEncoderValue = currentEncoderValue;
            AudioPlayer_SetCurrentVolume(lastEncoderValue / 2u);
            if (AudioPlayer_GetCurrentVolume() != lastVolume) {
                lastVolume = AudioPlayer_GetCurrentVolume();
                AudioPlayer_VolumeToQueueSender(AudioPlayer_GetCurrentVolume(), false);
            }
        }
    #endif
}