#include <WiFi.h>
#include <PubSubClient.h>
#include <LiquidCrystal_I2C.h>
#include <Wire.h>
#include "DHTesp.h"
#include "mbedtls/rsa.h"
#include <ArduinoJson.h>

#define RelayPin 5

// Flags da bomba
unsigned long tempoBombaLigada = 0;
const unsigned long tempoMaximo = 17500; // 17.5 segundos em milissegundos

// Substitua pelas suas informações de rede
const char* ssid = "Wokwi-GUEST";
const char* password = "";

// Substitua pelas suas informações do broker MQTT 
const char* mqttServer = "broker.hivemq.com";
const int mqttPort = 1883;
const char* mqttUser = "";
const char* mqttPassword = "";

// Substitua com a sua chave pública RSA
const char* rsa_public_key = "MFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBAMYyZNFcFX1d1uElYeWTGUlvzfzjqSJe Hu3hL9J6nd6Dvar+tLtCqhDMo7lVLQl3i4UNKZAM/ZpG0FVey4WbWB0CAwEAAQ=="; //512 tamanho

//Configurar Display
#define I2C_ADDR    0x27
#define LCD_COLUMNS 16
#define LCD_LINES   2

LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);

WiFiClient espClient;
PubSubClient client(espClient);

// Configuração do pino sensor DHT22, 
const int DHT_PIN = 15;
DHTesp dhtSensor;

/*void callback(char* topic, byte* payload, unsigned int lenght){
  if (strcmp(topic, "sensors/motor-pump") == 0){
    if (payload[0] == '1'){
      digitalWrite(motorPumpPin, HIGH);
      Serial.println(("Pump on"));
      waterBottle += 1;
          } else if(payload[0] == '0'){
            digitalWrite(motorPumpPin, LOW);
            Serial.println("Pump off");
          }
  }
}*/

void reconnect() {
  // Loop até que estejamos reconectados
  while (!client.connected()) {
    Serial.print("Tentando conectar ao MQTT Broker...");
    // Tente conectar
    if (client.connect("")) {
      Serial.println("Conectado ao MQTT Broker!");
    } else {
      Serial.print("Falha na conexão, rc=");
      Serial.print(client.state());
      Serial.println("Tentando novamente em 2 segundos");
      delay(2000);
    }
  }
}


void setup() {
  

  lcd.init();
  lcd.backlight();
  Serial.begin(115200);
  Serial.print("Conectando ao WiFi");
  WiFi.begin("Wokwi-GUEST", "", 6);
  while (WiFi.status() != WL_CONNECTED) {
    delay(100);
    Serial.print(".");
  }
  Serial.println(" Conectado!");
  Wire.begin(23, 22);
  client.setServer(mqttServer, mqttPort);
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
  pinMode(RelayPin, OUTPUT); //Definir pino Relé como saída

}

void loop() {

if (!client.connected()) {
    reconnect();
  }
  client.loop();

  TempAndHumidity  data = dhtSensor.getTempAndHumidity();
  int soilmeterValue = analogRead(34);

  lcd.setCursor(0, 0);
  lcd.print("Temperature:"+ String(data.temperature, 1) + "\xDF"+"C  ");
  lcd.setCursor(0, 1);
  lcd.print("Humidity: "+ String(data.humidity, 1) + "% ");
  delay(500);

 // Publish sensor data to MQTT topics
  char MqqtTopic[] = "sensores/medidas";

  //client.publish(temperatureTopic, String(data.temperature, 2).c_str());

  // Cria um documento JSON
  StaticJsonDocument<200> doc;
  doc["Temp"] = data.temperature;
  doc["Hum"] = data.humidity;
  doc["HumSoil"] = soilmeterValue;

  // Converte JSON para String
  String output;
  serializeJson(doc, output);

  // Publica a mensagem no tópico MQTT
  client.publish(MqqtTopic, output.c_str());
  delay(500);

  int16_t i = analogRead(34);
  String msg = i < 2165 ? "Seco" : i > 3135 ? "Humido" : "Normal";
  lcd.clear();
  lcd.print("Solo: ");
  lcd.print(msg);
  delay(500); 

  if (i > 2165){
    digitalWrite(RelayPin, LOW);
    int tempfim = millis();
    delay(500);
  }

  else if (i < 2165) {
    digitalWrite(RelayPin,HIGH);
    int tempini = millis();
    delay(500);
  } 
}