//ChannelID: 2266910
//ChannelAPIKey: 8MBSL69G6HBEXVN7
#include "DHTesp.h"
#include <LiquidCrystal_I2C.h>
#define I2C_ADDR    0x27
#define LCD_COLUMNS 16
#define LCD_LINES   2

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

const int DHT_PIN = 15;
const int RELAY_PIN = 19;
const char* WIFI_NAME = "Wokwi-GUEST";
const char* WIFI_PASSWORD = "";
const int myChannelNumber =2266910 ;
const char* myApiKey = "8MBSL69G6HBEXVN7";
const char* server = "api.thingspeak.com";


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

void setup() {

  Serial.begin(115200);
 //set the resolution to 12 bits (0-4096)
 // analogReadResolution(12);
  pinMode(RELAY_PIN, OUTPUT);
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
  lcd.init();
  lcd.backlight();
  
  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() {
// read the analog / millivolts value for pin 2:
  int analogValue = analogRead(2);
  int analogVolts = analogReadMilliVolts(2);
  
  // print out the values you read:
  Serial.printf("ADC analog value = %d\n",analogValue);
  Serial.printf("ADC millivolts value = %d\n",analogVolts);

  TempAndHumidity  data = dhtSensor.getTempAndHumidity();
  Serial.println("Temp: " + String(data.temperature, 1) + "°C");
  Serial.println("Humidity: " + String(data.humidity, 1) + "%");
  Serial.println("---");
  
  lcd.setCursor(0, 0);
  lcd.print("  Temp: " + String(data.temperature, 1) + "\xDF"+"C  ");
  lcd.setCursor(0, 1);
  lcd.print(" Humidity: " + String(data.humidity, 1) + "% ");
  lcd.print("Wokwi Online IoT");
//Thingspeak
  ThingSpeak.setField(1,data.temperature);
  ThingSpeak.setField(2,data.humidity);

  if (data.temperature > 60 || data.temperature < 33 || data.humidity > 70 || data.humidity < 40) {
    digitalWrite(RELAY_PIN, HIGH);
  }else{
    digitalWrite(RELAY_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("---");

  delay(1000);
}