//Lauren Gabrielle Fogaça 202210184
//Henrique Scudeller de Oliveira 202210324
//Gabriel Martinelli Galvão Andreello Simoni 202210183
//Ricardo Altever Alves Lessa 202210295

#include <WiFi.h>
#include <HTTPClient.h>
#include <DHT.h>
#include <LiquidCrystal_I2C.h>

// Configurações WiFi
const char* ssid = "Wokwi-GUEST";
const char* password = "";

// Configurações ThingSpeak
const char* server = "api.thingspeak.com";
String apiKey = "B656ILQFWZTX4VHC"; // Substitua pelo seu Write API Key

// Configurações dos sensores
#define DHT_PIN 15
#define DHT_TYPE DHT22
#define TRIG_PIN 4
#define ECHO_PIN 2

// Configuração do LCD
LiquidCrystal_I2C lcd(0x27, 16, 2);
DHT dht(DHT_PIN, DHT_TYPE);

// Variáveis para controle de tempo
unsigned long lastTime = 0;
unsigned long timerDelay = 30000;

void setup() {
  // Inicialização dos pinos
  pinMode(TRIG_PIN, OUTPUT);
  pinMode(ECHO_PIN, INPUT);

  // Inicialização dos componentes
  lcd.init();
  lcd.backlight();
  dht.begin();

  // Conexão WiFi
  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
  }

  lcd.init();
  lcd.backlight();
  lcd.setCursor(0, 0);
  lcd.print(" Escola de Eng. ");
  lcd.setCursor(0, 1);
  lcd.print(" de Piracicaba ");
  delay(1000);

  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("    Sistemas    ");
  lcd.setCursor(0, 1);
  lcd.print("   Embarcados   ");
  delay(1000);

  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("   Projeto 03   ");
  lcd.setCursor(0, 1);
  lcd.print("----------------");
  delay(1000);

  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("#   Produtor   #");
  lcd.setCursor(0, 1);
  lcd.print("#   Publisher  #");
  delay(1000);

  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Lauren Gabrielle");
  lcd.setCursor(0, 1);
  lcd.print("     Fogaca     ");
  delay(1000);

  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("  Henrique  S.  ");
  lcd.setCursor(0, 1);
  lcd.print("  de Oliveira  ");
  delay(1000);

  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Ricardo Altever");
  lcd.setCursor(0, 1);
  lcd.print("  Alves Lessa  ");
  delay(1000);

  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print(" Gabriel M. G. ");
  lcd.setCursor(0, 1);
  lcd.print("   Andreello   ");
  delay(1000);
}

void loop() {
  if ((millis() - lastTime) > timerDelay) {
    float temperature = dht.readTemperature();
    float tempF = (temperature * 9.0 / 5.0) + 32.0;
    float distance = readDistance();
    float distanceInch = distance / 2.54;

    if (isnan(temperature)) {
      lcd.clear();
      lcd.setCursor(0, 0);
      lcd.print("Erro DHT22!");
      delay(1000);
      return;
    }

    displayData(temperature, tempF, distance, distanceInch);

    // Envio para ThingSpeak
    if (WiFi.status() == WL_CONNECTED) {
      HTTPClient http;
      http.begin("http://api.thingspeak.com/update");
      http.addHeader("Content-Type", "application/x-www-form-urlencoded");

      String postData = "api_key=" + apiKey;
      postData += "&field1=" + String(temperature);
      postData += "&field2=" + String(tempF);
      postData += "&field3=" + String(distance);
      postData += "&field4=" + String(distanceInch);

      int httpResponseCode = http.POST(postData);

      if (httpResponseCode < 0) {
        lcd.setCursor(0, 1);
        lcd.print("Erro Envio!     ");
      }

      http.end();
    }

    lastTime = millis();
  }

  delay(1000);
}

float readDistance() {
  digitalWrite(TRIG_PIN, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIG_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN, LOW);

  long duration = pulseIn(ECHO_PIN, HIGH);
  float distance = duration * 0.034 / 2;

  return distance;
}

void displayData(float tempC, float tempF, float distCm, float distInch) {
  static int displayMode = 0;
  static unsigned long displayTimer = 0;

  if (millis() - displayTimer > 3000) {
    displayMode++;
    if (displayMode > 3) displayMode = 0;
    displayTimer = millis();
  }

  lcd.clear();


  lcd.setCursor(0, 0);
  lcd.print("Recuperar  dados");
  lcd.setCursor(0, 1);
  lcd.print("  dos Sensores  ");
  delay(1000);

  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Temperatura: ");
  lcd.setCursor(0, 1);
  lcd.print(tempC, 1);
  lcd.print(" C");
  delay(1000);
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Temperatura: ");
  lcd.setCursor(0, 1);
  lcd.print(tempF, 1);
  lcd.print(" F");
  delay(1000);

  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Distancia: ");
  lcd.setCursor(0, 1);
  lcd.print(distCm, 1);
  lcd.print("cm");
  delay(1000);
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Distancia: ");
  lcd.setCursor(0, 1);
  lcd.print(distInch, 1);
  lcd.print("pol");
  delay(1000);

  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("  Enviar Dados  ");
  lcd.setCursor(0, 1);
  lcd.print("   ao Broken   ");
  delay(1000);
}