#include <WiFi.h>
#include <FirebaseESP32.h>
#include <addons/RTDBHelper.h>
#include <addons/TokenHelper.h>

#define WIFI_SSID "Wokwi-GUEST"
#define WIFI_PASSWORD ""

#define DATABASE_URL "https://smart-home-security-syst-c4d76-default-rtdb.europe-west1.firebasedatabase.app/"
#define API_KEY "AIzaSyCR2xvbQ2V9ObdHwwzDl3FCzWnPC8uwk9c"

#define PIR_PIN 14
#define LED_PIN 13
#define BUTTON_PIN 12

bool motionDetected = false;
bool systemArmed = false;
bool autoMode = true;

FirebaseData fbdo;
FirebaseConfig config;
FirebaseAuth auth;

void setup() {
  Serial.begin(115200);
  pinMode(PIR_PIN, INPUT);
  pinMode(LED_PIN, OUTPUT);
  pinMode(BUTTON_PIN, INPUT_PULLUP);

  WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
  Serial.print("Connecting to Wi-Fi");
  while (WiFi.status() != WL_CONNECTED) {
    Serial.print(".");
    delay(500);
  }
  Serial.println();
  Serial.print("Connected with IP: ");
  Serial.println(WiFi.localIP());
  Serial.println();

  config.database_url = DATABASE_URL;
  config.api_key = API_KEY;

  Firebase.begin(&config, &auth);
  Firebase.reconnectWiFi(true);

  Firebase.setBool(fbdo, "/systemArmed", false);
  Firebase.setBool(fbdo, "/autoMode", true);
  Firebase.setBool(fbdo, "/motionDetected", false);
}

void loop() {
  static bool lastButtonState = HIGH;
  bool currentButtonState = digitalRead(BUTTON_PIN);

  if (currentButtonState == LOW && lastButtonState == HIGH) {
    systemArmed = !systemArmed;
    Firebase.setBool(fbdo, "/systemArmed", systemArmed);
    Serial.println(systemArmed ? "System ARMED" : "System DISARMED");
    delay(300);
  }
  lastButtonState = currentButtonState;

  motionDetected = digitalRead(PIR_PIN);
  Serial.print("PIR Value: ");
  Serial.println(motionDetected);

  Firebase.setBool(fbdo, "/motionDetected", motionDetected);

  Firebase.getBool(fbdo, "/autoMode");
  autoMode = fbdo.boolData();

  Firebase.getBool(fbdo, "/systemArmed");
  systemArmed = fbdo.boolData();

  if (autoMode && systemArmed && motionDetected) {
    digitalWrite(LED_PIN, HIGH);
    Firebase.setString(fbdo, "/status", "Motion Detected!");
    delay(2000);
  } else {
    digitalWrite(LED_PIN, LOW);
    Firebase.setString(fbdo, "/status", "Idle");
  }
  delay(300);
}