#include <WiFi.h>
#include <LiquidCrystal_I2C.h>
#include "DHTesp.h"
#include "ThingSpeak.h"

#define I2C_ADDR    0x27
#define LCD_COLUMNS 20
#define LCD_LINES   4


const int RLED_PIN = 27;
const int BLED_PIN = 14;

const int POT_PIN = 2;
//float PH;
//float Value=0;
const int DHT_PIN = 4;

const char* WIFI_NAME = "Wokwi-GUEST";
const char* WIFI_PASSWORD = "";
const int myChannelNumber =2226105 ;
const char* myApiKey = "5ZZNFKTB60NEJIV9";
const char* server = "api.thingspeak.com";

DHTesp dhtSensor;
LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);
WiFiClient client;

void setup() {
  Serial.begin(115200);
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
  pinMode(RLED_PIN, OUTPUT);
  pinMode(RLED_PIN, OUTPUT);
  pinMode(POT_PIN,INPUT);
  delay(1000);

  WiFi.begin(WIFI_NAME, WIFI_PASSWORD);
  while (WiFi.status() != WL_CONNECTED){
    delay(1000);
    Serial.println("Wifi not connected");
  }
  Serial.println("Wifi connected !");
  Serial.println("Local IP: " + String(WiFi.localIP()));
  WiFi.mode(WIFI_STA);
  ThingSpeak.begin(client);
}

void loop() {
  //Temp
  TempAndHumidity data = dhtSensor.getTempAndHumidity();
  ThingSpeak.setField(1,data.temperature);
  
  //PH value
  float PHValue = map(analogRead(POT_PIN), 0, 4095, 0.0, 14.0);
  //PHValue = analogRead(POT_PIN);
  Serial.print("pH Value: ");
  Serial.println(PHValue, 2); // Print pH value with 2 decimal places
  //float voltage=Value*(3.3/4095.0);
  //ph = (3.3*voltage);
  //Serial.println(ph);
  ThingSpeak.setField(2,PHValue);
  //delay(500)

  //LED
  //digitalWrite(RLED_PIN, PHValue <= 6.0 && PHValue >= 8.0);
  //digitalWrite(BLED_PIN, PHValue >= 6.0 && PHValue <= 8.0);
  if (data.temperature >= 35 || data.temperature <= 12 || PHValue >= 6 || PHValue <= 8) {
    digitalWrite(RLED_PIN, LOW);
    digitalWrite(RLED_PIN, HIGH);
  }else{
    digitalWrite(RLED_PIN, HIGH);
    digitalWrite(BLED_PIN, LOW);
  }
  
  int x = ThingSpeak.writeFields(myChannelNumber,myApiKey);

  if(x == 200){
    Serial.println("Data pushed successfull");
  }else{
    Serial.println("Push error" + String(x));
  }
  Serial.println("---");
  
  //LCD
  lcd.setCursor(0, 0);
  lcd.print("  Temp: " + String(data.temperature, 1) + "\xDF"+"C  ");
  lcd.setCursor(0, 1);
  lcd.print(" PH: " + String(PHValue, 1));
  lcd.print("Wokwi Online IoT");
  delay(10000);

  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
}