/*
   Created by ArduinoGetStarted.com

   This example code is in the public domain

   Tutorial page: https://arduinogetstarted.com/tutorials/arduino-blink-multiple-led
  https://arduinogetstarted.com/library/button/example/arduino-single-button-debounce
  https://arduinogetstarted.com/tutorials/arduino-led-library
*/

#include <ezButton.h>
#include <ezLED.h> // ezLED library by ArduinoGetStarted.com

#define POTENTIOMETER_PIN  36  // ESP32 pin GPIO36 (ADC0) connected to Potentiometer pin

#define Led_Status_Pin 32
#define Button_Charge_Pin 12
#define Button_DeCharge_Pin 14
#define NUM_LED 10 // three LEDs

#define PIN_LED_1 7 // The Arduino pin connected to LED 1
#define PIN_LED_2 8 // The Arduino pin connected to LED 2 7 = D0
#define PIN_LED_3 15 // The Arduino pin connected to LED 3
#define PIN_LED_4 2 // The Arduino pin connected to LED 3
#define PIN_LED_5 0 // The Arduino pin connected to LED 3
#define PIN_LED_6 4 // The Arduino pin connected to LED 3
#define PIN_LED_7 16 // The Arduino pin connected to LED 1 8 = D1
#define PIN_LED_8 17 // The Arduino pin connected to LED 2
#define PIN_LED_9 5 // The Arduino pin connected to LED 3
#define PIN_LED_10 18 // The Arduino pin connected to LED 3

ezButton Button_Charge(Button_Charge_Pin); // create ezButton object that attach to pin GPIO21
ezButton Button_DeCharge(Button_DeCharge_Pin); // create ezButton object that attach to pin GPIO21
ezLED Led_Status(Led_Status_Pin);  // create a LED object that attach to pin 9

ezLED ledArray[NUM_LED] = {
  ezLED(PIN_LED_1),  // create ezLED object that attach to pin PIN_LED_1
  ezLED(PIN_LED_2),  // create ezLED object that attach to pin PIN_LED_2
  ezLED(PIN_LED_3),   // create ezLED object that attach to pin PIN_LED_3
  ezLED(PIN_LED_4),  // create ezLED object that attach to pin PIN_LED_1
  ezLED(PIN_LED_5),  // create ezLED object that attach to pin PIN_LED_2
  ezLED(PIN_LED_6),   // create ezLED object that attach to pin PIN_LED_3
  ezLED(PIN_LED_7),  // create ezLED object that attach to pin PIN_LED_1
  ezLED(PIN_LED_8),  // create ezLED object that attach to pin PIN_LED_2
  ezLED(PIN_LED_9),   // create ezLED object that attach to pin PIN_LED_3
  ezLED(PIN_LED_10),  // create ezLED object that attach to pin PIN_LED_2
};

int sensorReading_new = 0;
int sensorReading_old = 0;
int Etat_Charge = 0;
int ledLevel = 0;

void setup()
{
  Serial.begin(9600);

  Button_Charge.setDebounceTime(50); // set debounce time to 50 milliseconds
  Button_DeCharge.setDebounceTime(50); // set debounce time to 50 milliseconds
}

void FBarGraph()
{
  for (int thisLed = 0; thisLed < NUM_LED; thisLed++)
    ledArray[thisLed].cancel();

  for (int thisLed = 0; thisLed < NUM_LED; thisLed++)
  {
    // if the array element's index is less than ledLevel,
    // turn the pin for this element on:
    if (thisLed < ledLevel)
    {
      ledArray[thisLed].turnON();
    }
    // turn off all pins higher than the ledLevel:
    else
    {
      ledArray[thisLed].turnOFF();
    }
  }

  if (Etat_Charge == 1)  // => OK
  {
    if (ledLevel == 10)
    {
      ledArray[9].blink(200, 200); // 500ms ON, 500ms OFF, blink immediately
    }
    else
    {
      ledArray[ledLevel].blink(200, 200); // 500ms ON, 500ms OFF, blink immediately
    }
  }

  else if (Etat_Charge == 2)  // => OK
  {
    if (ledLevel == 0)
    {
      ledArray[0].blink(200, 200); // 500ms ON, 500ms OFF, blink immediately
    }
    else if (ledLevel == 1)
    {
      ledArray[0].blink(200, 200); // 500ms ON, 500ms OFF, blink immediately
    }
    else
    {
      ledArray[ledLevel - 2].blink(200, 200); // 500ms ON, 500ms OFF, blink immediately
    }
  }
}

void loop()
{
  Button_Charge.loop();              // MUST call the loop() function first
  Button_DeCharge.loop();              // MUST call the loop() function first
  Led_Status.loop();                // MUST call the Led_Status.loop() function in loop()

  for (int i = 0; i < NUM_LED; i++)
    ledArray[i].loop(); // MUST call the led.loop() function in loop()

  sensorReading_new = analogRead(POTENTIOMETER_PIN);
  // map the result to a range from 0 to the number of LEDs:
  ledLevel = map(sensorReading_new, 0, 4095, 0, NUM_LED);

  if (sensorReading_new != sensorReading_old)
  {
    Serial.print("sensorReading= ");
    Serial.print(sensorReading_new);
    Serial.print("          ledLevel= ");
    Serial.println(ledLevel);
    sensorReading_old = sensorReading_new;
    FBarGraph();
  }

  if (Button_Charge.isPressed())
  {
    Etat_Charge = 1;
    Serial.println("Charge");
    FBarGraph();
  }

  if (Button_DeCharge.isPressed())
  {
    Etat_Charge = 2;
    Serial.println("DeCharge");
    FBarGraph();
  }
}