#include <WiFi.h>
#include <DHT.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <OneWire.h>
#include <DallasTemperature.h>
#include <SD.h>
#include "symbols.h"

// v 1


// Uncomment one of the lines below for whatever DHT sensor type you're using!
//#define DHTTYPE DHT11   // DHT 11
//#define DHTTYPE DHT21   // DHT 21 (AM2301)
#define DHTTYPE DHT22   // DHT 22  (AM2302), AM2321

// DHT Sensor
uint8_t DHTPin = 4; 

// Initialize DHT sensor.
DHT dht(DHTPin, DHTTYPE);                

float Temperature;
float Humidity;

// LCD

LiquidCrystal_I2C LCD = LiquidCrystal_I2C(0x27, 16, 2);

// Button

#define BUTTON_PIN 26 // GPIO26 pin connected to button
int buttonState  = LOW;     // Змінна для зберігання стану кнопки
int lastButtonState = LOW;
int currentState; 
int buttonCounter = 0;   // Лічильник кількості натискань кнопки

int maxSwitch = 3;


// Temperature sensor  DS18B20

const int oneWireBus = 12;
OneWire oneWire(oneWireBus);
DallasTemperature sensors(&oneWire);

  float temperatureC;
  float temperatureF;

void setup() {
  Serial.begin(115200);

  // Button
  pinMode(BUTTON_PIN, INPUT);

  // Temperature sensor  DS18B20
  sensors.begin();

  // LCD
  LCD.begin(16, 2);
  LCD.init();
  LCD.backlight();
  LCD.setCursor(0, 0);
  LCD.print("Connecting to ");
  LCD.setCursor(0, 1);
  LCD.print("WiFi ");
}

unsigned long next_time; // время очередного переключения первого светодиода
int timeout = 10000; // половина периода мигания

void loop() { 
    
    
  int now_time = millis(); // текущее время
  if( now_time >= next_time ){ // если текущее время превысило намеченное время, то
    next_time = now_time + timeout; // вычисляем время следующего переключения

    sensors.requestTemperatures(); 
    temperatureC = sensors.getTempCByIndex(0);
    temperatureF = sensors.getTempFByIndex(0);

    Serial.print(temperatureC);
    Serial.println("ºC");
    Serial.print(temperatureF);
    Serial.println("ºF");

    Temperature = dht.readTemperature(); // Gets the values of the temperature
    Humidity = dht.readHumidity(); // Gets the values of the humidity 
    Serial.print(Temperature);
    Serial.println("ºC");
    Serial.print(Humidity);
    Serial.println("%");
  }
  

  buttonState = digitalRead(BUTTON_PIN);

  if (buttonState != lastButtonState) {
    if (buttonState == HIGH) {       
      if(buttonCounter == maxSwitch){
        buttonCounter = 1;
      }
      else{
        buttonCounter++;
      }   
      displayPageOnLCD(buttonCounter);
      Serial.print("Кількість натискань кнопки: ");
      Serial.println(buttonCounter);
      // Затримка для уникнення подвійних натискань
      delay(500);
    }

    lastButtonState = buttonState;
  }
}

   

void signalLevelIcon( int signalLevel, int indexVertical, int indexHorizontal ){

  if(signalLevel == 0){
   byte signalLevelIconRAW[8] = {
      0b00000,
      0b00100,
      0b00100,
      0b00100,
      0b00100,
      0b00000,
      0b00100,
      0b00000
    };
    LCD.createChar(0, signalLevelIconRAW);
  }

  else if(signalLevel == 1){
    byte signalLevelIconRAW[8] = {
      0b00000,
      0b00000,
      0b00000,
      0b00000,
      0b00000,
      0b00000,
      0b00100,
      0b00000
    };
    LCD.createChar(0, signalLevelIconRAW);
  }

  else if(signalLevel == 2){
    byte signalLevelIconRAW[8] = {
      0b00000,
      0b00000,
      0b00000,
      0b00100,
      0b01110,
      0b00000,
      0b00100,
      0b00000
    };
    LCD.createChar(0, signalLevelIconRAW);
  }

  else if(signalLevel == 3){
    byte signalLevelIconRAW[8] = {
      0b00100,
      0b01110,
      0b10001,
      0b00100,
      0b01110,
      0b00000,
      0b00100,
      0b00000
    };
    LCD.createChar(0, signalLevelIconRAW);
  }

    //LCD.setCursor(0, 0);
    LCD.setCursor(indexVertical, indexHorizontal);
    //LCD.write((uint8_t) signalLevel); 
    LCD.write((byte) 0);    
}

void batteryLevelIcon( int batteryLevel, int indexVertical, int indexHorizontal ){

if(batteryLevel >= 0 && batteryLevel <= 10){
  byte batteryLevelIconRAW[8] = {
    0b01110,
    0b11011,
    0b10001,
    0b10001,
    0b10001,
    0b10001,
    0b10001,
    0b11111
  };
  LCD.createChar(1, batteryLevelIconRAW);
}

else if(batteryLevel > 10 && batteryLevel <= 20){
  byte batteryLevelIconRAW[8] = {
    0b01110,
    0b11011,
    0b10001,
    0b10001,
    0b10001,
    0b10001,
    0b11111,
    0b11111
  };
  LCD.createChar(1, batteryLevelIconRAW);
}

else if(batteryLevel > 20 && batteryLevel <= 40){
  byte batteryLevelIconRAW[8] = {
    0b01110,
    0b11011,
    0b10001,
    0b10001,
    0b10001,
    0b11111,
    0b11111,
    0b11111
  };
  LCD.createChar(1, batteryLevelIconRAW);
}

else if(batteryLevel > 40 && batteryLevel <= 60){
  byte batteryLevelIconRAW[8] = {
    0b01110,
    0b11011,
    0b10001,
    0b10001,
    0b11111,
    0b11111,
    0b11111,
    0b11111
  };
  LCD.createChar(1, batteryLevelIconRAW);
}

else if(batteryLevel > 60 && batteryLevel <= 80){
  byte batteryLevelIconRAW[8] = {
    0b01110,
    0b11011,
    0b10001,
    0b11111,
    0b11111,
    0b11111,
    0b11111,
    0b11111
  };
  LCD.createChar(1, batteryLevelIconRAW);
}

else if(batteryLevel > 80 && batteryLevel <= 100){
  byte batteryLevelIconRAW[8] = {
    0b01110,
    0b11111,
    0b11111,
    0b11111,
    0b11111,
    0b11111,
    0b11111,
    0b11111
  };
  LCD.createChar(1, batteryLevelIconRAW);
}

else if(batteryLevel < 0 || batteryLevel > 100){
  byte batteryLevelIconRAW[8] = {
    0b00000,
    0b00100,
    0b00100,
    0b00100,
    0b00100,
    0b00000,
    0b00100,
    0b00000
  };
  LCD.createChar(1, batteryLevelIconRAW);
}
    //LCD.setCursor(0, 1);
    LCD.setCursor(indexVertical, indexHorizontal);
    // LCD.write((uint8_t) batteryLevel); 
    LCD.write((byte) 1);   
}



void displayPageOnLCD(int namberPage){

    LCD.begin(16, 2);
    LCD.clear();
    
    signalLevelIcon(0, 0, 0);
    batteryLevelIcon(195, 0, 1);

  
  // Page 1 Signal, battery, Temperature, Humidity

  if(namberPage == 1){

        
        LCD.setCursor(7, 0);
        LCD.println("|");
        LCD.setCursor(7, 1);
        LCD.println("|");

        LCD.setCursor(9, 0);
        LCD.println(Temperature);
        LCD.setCursor(15, 0);
        LCD.println("%");  
        //LCD.write((uint8_t)6); // show icon degreesCelsius          
        LCD.setCursor(9, 1); 
        LCD.println(Humidity);   
        LCD.setCursor(15, 1); 
        LCD.println("%"); 
  }

  else if(namberPage == 2){

        
        LCD.setCursor(8, 0);
        LCD.println(temperatureC);
        LCD.setCursor(15, 0);
        LCD.println("C");
       
        LCD.setCursor(8, 1);
        LCD.println(temperatureF);
        LCD.setCursor(15, 1);
        LCD.println("F");
  }

  else if(namberPage == 3){
       
        LCD.setCursor(8, 0);
        LCD.println("ERROR");
  }

}