// - NVS-NVS- NVS-NVS- NVS-NVS- NVS-NVS- NVS-NVS----------------------
#include <Preferences.h>
#include "nvs_flash.h"
#include "common.h"

//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#define READWRITEnvs false  // Read Write NVS 
#define READONLYnvs true    // Read Only NVS

#define NVS_VERSION 105  // my NVS Version

/* Namespace name is limited to 15 characters. */
#define NVS_NAMESPACE_VERSION "nvsVer"  // namespace for Version
#define NVS_NAMESPACE_PREAMP "nvs_Preamp"
#define NVS_NAMESPACE_VER "nvs_version"
#define NVS_NAMESPACE_SEL_IN "Select_in"
#define NVS_NAMESPACE_PREAP_VOL "Preap_Volume"
#define NVS_NAMESPACE_BUZ_VOL "Buzzer_Volume"
#define NVS_NAMESPACE_BL_BRIGHT "BL_Brightness"

//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
uint8_t nvsVersion;
Preferences NVSprefs;
/////////////////////////////////////////////////////////////////////////


//=======================================================================
// nvsLoadVersion
void nvsLoadVersion() {
  nvsVersion = NVSprefs.getUChar(NVS_NAMESPACE_VERSION);
  NVSprefs.end();  // Close the Preferences nvsLoadVersion

#if DEBUGLEVEL > 2 /* Serial Debugging */
  printf("\r------ Load NVS Version -------------------------------\n");
  printf("[info] namespace : %s \r\n", NVS_NAMESPACE_VERSION);
  printf("\t%-13s: %d \r\n", "nvs version", nvsVersion);
  PRINT_DASHED_LINES;
#endif  //DEBUGLEVEL > 2

  if (nvsVersion != NVS_VERSION) {
#if DEBUGLEVEL > 0 /* Serial Debugging */
    printf("-⚠️ Different version of NVS found-\n\r");
    printf("\tExisting Version   : %d\n", nvsVersion);
    printf("\tFound this Version : %d\n", NVS_VERSION);
    printf("--⚠️ Erases NVS flash and\n\tinitialize the NVS partition\n>>>> Now Reboot ESP <<<<\n\r");
    PRINT_DASHED_LINES;
#endif  // DEBUGLEVEL > 0

    // To completely erase and reformat the NVS memory used by Preferences
    nvs_flash_erase();  // erase the NVS partition and...
    nvs_flash_init();   // initialize the NVS partition.
    delay(100);
    ESP.restart();
    delay(1000);
  }
}


//=======================================================================
void nvsSaveNewValues() {
  if (millis() - DelayTimeStoreToNVS > 10000) {
    NVSprefs.begin(NVS_NAMESPACE_PREAMP, READWRITEnvs);
    FlagStoreToNVS = false;
    DelayTimeStoreToNVS = millis();

    if (oldSelect_in != Select_in) {
      oldSelect_in = Select_in;
      NVSprefs.putUChar(NVS_NAMESPACE_SEL_IN, Select_in);
#if DEBUGLEVEL > 4  // Serial Debugging
      DEBUG_F("New Store in nvs Select in: %s\n", inputName[Select_in]);
#endif  //DEBUGLEVEL > 4
    }

    if (oldVolume != Volume) {
      oldVolume = Volume;
      NVSprefs.putUChar(NVS_NAMESPACE_PREAP_VOL, Volume);
#if DEBUGLEVEL > 4  // Serial Debugging
      DEBUG_F("New Store in nvs Volume : %d\n", Volume);
#endif  //DEBUGLEVEL > 4
    }

    if (oldBuzzerVolume != BuzzerVolume) {
      oldBuzzerVolume != BuzzerVolume;
      NVSprefs.putUChar(NVS_NAMESPACE_BUZ_VOL, BuzzerVolume);
#if DEBUGLEVEL > 4  // Serial Debugging
      DEBUG_F("New Store in nvs BuzzerVolume : %d\n", BuzzerVolume);
#endif  //DEBUGLEVEL > 4
    }

    if (oldBL_brightness != BL_brightness) {
      oldBL_brightness = BL_brightness;
      NVSprefs.putUChar(NVS_NAMESPACE_BL_BRIGHT, BL_brightness);
#if DEBUGLEVEL > 4  // Serial Debugging
      DEBUG_F("New Store in nvs BuzzerVolume : %d\n", BL_brightness);
#endif  //DEBUGLEVEL > 4
    }

    NVSprefs.end();
  }  // if (millis() - DelayTimeStoreToNVS > 30000)
}


//=======================================================================
void StartWithDefaulPreampValues() {
  Select_in = 1;
  Volume = 26;
  BuzzerVolume = 100;
  BL_brightness = 250;

  NVSprefs.begin(NVS_NAMESPACE_PREAMP, READWRITEnvs);  //

  NVSprefs.putUChar(NVS_NAMESPACE_SEL_IN, Select_in);
  NVSprefs.putUChar(NVS_NAMESPACE_PREAP_VOL, Volume);
  NVSprefs.putUChar(NVS_NAMESPACE_BUZ_VOL, BuzzerVolume);
  NVSprefs.putUChar(NVS_NAMESPACE_BL_BRIGHT, BL_brightness);
  NVSprefs.end();  //

#if DEBUGLEVEL > 0  // Serial Debugging
  DEBUG_F("------ Start with Default Preamp Values -------------------\n\r");
  DEBUG_F("\t[Default] %-15s : %s\n", NVS_NAMESPACE_SEL_IN, inputName[Select_in]);
  DEBUG_F("\t[Default] %-15s : %d\n", NVS_NAMESPACE_PREAP_VOL, Volume);
  DEBUG_F("\t[Default] %-15s : %d\n", NVS_NAMESPACE_BUZ_VOL, BuzzerVolume);
  DEBUG_F("\t[Default] %-15s : %d\n", NVS_NAMESPACE_BL_BRIGHT, BL_brightness);

  PRINT_DASHED_LINES;
#endif  //DEBUGLEVEL > 0
}

//=======================================================================
void nvsLoadPreampValues() {
  NVSprefs.begin(NVS_NAMESPACE_PREAMP, READONLYnvs);  //

  Select_in = NVSprefs.getUChar(NVS_NAMESPACE_SEL_IN);
  Volume = NVSprefs.getUChar(NVS_NAMESPACE_PREAP_VOL);
  BuzzerVolume = NVSprefs.getUChar(NVS_NAMESPACE_BUZ_VOL);
  BL_brightness = NVSprefs.getUChar(NVS_NAMESPACE_BL_BRIGHT);

  oldSelect_in = Select_in;
  oldVolume = Volume;
  oldBuzzerVolume = BuzzerVolume;
  oldBL_brightness = BL_brightness;

  NVSprefs.end();

#if DEBUGLEVEL > 2  // Serial Debugging
  printf("------ Load Preamplifier Values from NVS  --------------------\n");
  printf("[info] namespace : %s\n", NVS_NAMESPACE_PREAMP);
  DEBUG_F("\t%-13s : %s\n", NVS_NAMESPACE_SEL_IN, inputName[Select_in]);
  DEBUG_F("\t%-13s : %d\n", NVS_NAMESPACE_PREAP_VOL, Volume);
  DEBUG_F("\t%-13s : %d\n", NVS_NAMESPACE_BUZ_VOL, BuzzerVolume);
  DEBUG_F("\t%-13s : %d\n", NVS_NAMESPACE_BL_BRIGHT, BL_brightness);
  PRINT_DASHED_LINES;
#endif  //DEBUGLEVEL > 2
}

#define RW_MODE false
#define RO_MODE true

// #define READWRITEnvs false  // Read Write NVS
// #define READONLYnvs true    // Read Only NVS

//=======================================================================
void NVS_init() {
  DEBUG_F("\r------ Preferences NVS init  -------------------------\n");
  NVSprefs.begin(NVS_NAMESPACE_VERSION, READONLYnvs);  // true -> Read Only mode

  bool tpInit = NVSprefs.isKey("nvsInit");  // Test for the existence

  if (tpInit == false) {
    DEBUG_F("❌➡ The key [ nvsInit ] does not yet exist\n        must be first-time run, or NVS new Version FOUND\n");
    NVSprefs.end();  // close the namespace in READ ONLY mode

    nvsVersion = NVS_VERSION;
    NVSprefs.begin(NVS_NAMESPACE_VERSION, READWRITEnvs);   // false -> reopen it in READ WRITE mode.
    NVSprefs.putUChar(NVS_NAMESPACE_VERSION, nvsVersion);  // Save NVS version
    NVSprefs.putBool("nvsInit", true);                     // Create the  key and store a value.
    NVSprefs.end();                                        // Close the namespace in RW mode.

#if DEBUGLEVEL > 0  // Serial Debugging
    DEBUG_F("\t[Default] %-15s : %d\n", NVS_NAMESPACE_VERSION, nvsVersion);
#endif  //DEBUGLEVEL > 0

    StartWithDefaulPreampValues();  // Load Default parameters and Save to NVS
  } else {
    nvsLoadVersion();
    DEBUG_F("[info] Load Settings from nvs flash\n");
    nvsLoadPreampValues();
  }

  DEBUG_F("------ Close Preferences NVS init --------------------\n\r");
}  //--NVS_init()--



// - NVS-NVS- NVS-NVS- NVS-NVS- NVS-NVS- NVS-NVS----------------------


// -LED-LED-LED-LED-LED-LED-LED-LED------------------
#define LED_S 1 // S
#define LED_P 2 // P
#define LED_O 3 // O
#define LED_R 4 // R
#define LED_T 5 // T
#define LED_F 7 // F
#define LED_M 8 // M

int brightness = 0;  // how bright the LED is
int fadeAmount = 1;  // how many points to fade the LED by
int  led = 0;
int  count = 1;

// create an array of pins for outputs
const uint8_t LEDS[7] = { LED_S, LED_P, LED_O, LED_R, LED_T, LED_F, LED_M};  // Leds
const size_t NUM_Leds = sizeof(LEDS);
// -LED-LED-LED-LED-LED-LED-LED-LED------------------


//=======================================================================
void setup() {
  Serial.begin(115200);
  delay(10);

  // - NVS-NVS- NVS----------------------
  DEBUG_F("\r\n\n ------❗ESP Booting Firmware ➡️ [ %s ] ------\r\n", SKETCH_NAME.c_str());
  NVS_init();

  // -LED-LED----------------------------
  for (uint8_t i = 0; i < NUM_Leds; i++) {
    pinMode(LEDS[i], OUTPUT);
    digitalWrite (LEDS[i], LOW);
  }

  DEBUG_F("\t CMD_ID        : %d \n", CMD_ID);
  DEBUG_F("\t ID_PREAMP     : %d \n", ID_PREAMP);
  DEBUG_F("\t PREAMP_VOL    : %d \n", PREAMP_VOL);
  DEBUG_F("\t PREAMP_LEFT   : %d \n", PREAMP_LEFT);
  DEBUG_F("\t PREAMP_RIGHT  : %d \n", PREAMP_RIGHT);
  DEBUG_F("\t PREAMP_MUTE   : %d \n", PREAMP_MUTE);

  StartLeds();
}


//=======================================================================
void loop() {
  /*   Continue();
    delay ( 400 );
    FadeAllLeds();
    delay ( 400 ); */
  RadomFadeLeds();

  if (FlagStoreToNVS) {
    nvsSaveNewValues();
  }
}


void StartLeds() {
  static  bool State[NUM_Leds];
  for (uint8_t i = 0; i < NUM_Leds; i++) {
    State[i] = !State[i];
    digitalWrite (LEDS[i], State[i]);
    delay ( 400 );
  }
}



void Continue() {
  static  bool State[NUM_Leds];

  State[led] = !State[led];

  digitalWrite (LEDS[led], State[led]);
  delay ( 400 );
  // led = (led + 1) % NUM_Leds;
  led = led + count;

  if (led < 0 || led >= NUM_Leds) {
    count = -count;
  }
}


void FadeAllLeds() {
  brightness = brightness + fadeAmount;

  if (brightness < 0 || brightness >= 150) {
    fadeAmount = -fadeAmount;
  }

  analogWrite(LEDS[led], brightness);
  delay(2);

  led = led + count;

  if (led < 0 || led >= NUM_Leds) {
    count = -count;
  }
}

void RadomFadeLeds() {
  brightness = random (0, 50);
  led = random(0, NUM_Leds);
  analogWrite(LEDS[led], brightness);
  delay(20);
}