#include <WiFi.h>
#include <WiFiClientSecure.h>
#include "esp_mail_client.h"

// Sensor Pin
const int mq2Pin = 34;
const int ledPin = 26;
const int buzzerPin = 27;

// Email Credentials
const char* ssid = "your_SSID";
const char* password = "your_PASSWORD";

// Gmail credentials
#define EMAIL_SENDER "[email protected]"
#define EMAIL_PASSWORD "your_email_password"
#define EMAIL_RECIPIENT "[email protected]"

// SMTP server for Gmail
#define SMTP_HOST "smtp.gmail.com"
#define SMTP_PORT 465

// Threshold values (tentukan berdasarkan hasil kalibrasi)
int rokokThreshold = 300;  // Nilai threshold untuk asap rokok
int vapeThreshold = 350;   // Nilai threshold untuk asap vape
int kebakaranThreshold = 500; // Nilai threshold untuk kebakaran

// Mengirim Email
void sendEmailAlert(const char* subject, const char* message) {
  ESP_Mail_Session session;
  session.server.host_name = SMTP_HOST;
  session.server.port = SMTP_PORT;
  session.login.email = EMAIL_SENDER;
  session.login.password = EMAIL_PASSWORD;
  session.login.user_domain = "";

  SMTP_Message email;
  email.sender.name = "ESP32";
  email.sender.email = EMAIL_SENDER;
  email.subject = subject;
  email.addRecipient("Recipient", EMAIL_RECIPIENT);
  email.text.content = message;

  SMTPSession smtp;
  if (!smtp.connect(&session)) {
    Serial.println("Failed to connect to the server.");
    return;
  }

  if (!MailClient.sendMail(&smtp, &email)) {
    Serial.println("Failed to send Email.");
  } else {
    Serial.println("Email sent successfully.");
  }
  
  smtp.closeSession();
}

void setup() {
  Serial.begin(115200);
  pinMode(ledPin, OUTPUT);
  pinMode(buzzerPin, OUTPUT);
  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi...");
  }

  Serial.println("Connected to WiFi.");
}

void loop() {
  int sensorValue = analogRead(mq2Pin);
  Serial.print("Sensor Value: ");
  Serial.println(sensorValue);

  if (sensorValue > kebakaranThreshold) {
    // Kebakaran
    digitalWrite(ledPin, HIGH);
    digitalWrite(buzzerPin, HIGH);
    sendEmailAlert("Kebakaran Terdeteksi!", "Terdeteksi asap kebakaran. Segera ambil tindakan.");
    delay(10000); // Mengirim email setiap 10 detik untuk kebakaran
  } else if (sensorValue > vapeThreshold) {
    // Vape terdeteksi
    Serial.println("Vape terdeteksi.");
    sendEmailAlert("Vape Terdeteksi", "Terdeteksi asap vape.");
    delay(10000); // Hindari pengiriman email berlebihan
  } else if (sensorValue > rokokThreshold) {
    // Asap rokok terdeteksi
    Serial.println("Asap rokok terdeteksi.");
    sendEmailAlert("Asap Rokok Terdeteksi", "Terdeteksi asap rokok.");
    delay(10000);
  } else {
    // Tidak ada asap berbahaya
    digitalWrite(ledPin, LOW);
    digitalWrite(buzzerPin, LOW);
  }

  delay(1000); // Pembacaan setiap detik
}