#include <TinyGPS++.h>
#include <Wire.h>
#include <Adafruit_Sensor.h>
#include <Adafruit_ADXL345_U.h>
#include <WiFi.h>
#include <UniversalTelegramBot.h>

#define GPS_BAUDRATE 9600  // The default baudrate of NEO-6M is 9600

#define LED_PIN 2 // Pin connected to LED
#define BUZZER_PIN 4 // Pin connected to Buzzer

// WiFi credentials
const char* ssid = "Kanekisem";
const char* password = "taktauke";

// Telegram Bot credentials
#define BOTtoken "7106172939:AAHhlZRKhRiPJcRlEELfLTdWNIA-lTlt6Gk"
#define CHAT_ID "673371683"

// Initialize the accelerometer
Adafruit_ADXL345_Unified accel = Adafruit_ADXL345_Unified(12345);

// Initialize the Telegram bot
WiFiClient client;
UniversalTelegramBot bot(BOTtoken, client);

TinyGPSPlus gps;  // the TinyGPS++ object

void setup() {
  Serial.begin(9600);
  Serial2.begin(GPS_BAUDRATE);

  // Initialize LED and Buzzer
  pinMode(LED_PIN, OUTPUT);
  pinMode(BUZZER_PIN, OUTPUT);

  // Initialize the accelerometer
  if (!accel.begin()) {
    Serial.println(F("Could not find a valid ADXL345 sensor, check wiring!"));
    while (1);
  }

  Serial.println(F("ESP32 - GPS module"));

  // Connect to WiFi
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.println("WiFi connected");
}

void loop() {
  if (Serial2.available() > 0) {
    if (gps.encode(Serial2.read())) {
      if (gps.location.isValid()) {
        Serial.print(F("- latitude: "));
        Serial.println(gps.location.lat());

        Serial.print(F("- longitude: "));
        Serial.println(gps.location.lng());

        Serial.print(F("- altitude: "));
        if (gps.altitude.isValid())
          Serial.println(gps.altitude.meters());
        else
          Serial.println(F("INVALID"));

        // Send GPS data as a link to Google Maps to Telegram
        String googleMapsLink = "https://maps.google.com/maps?q=" + String(gps.location.lat(), 6) + "," + String(gps.location.lng(), 6);
        bot.sendMessage(CHAT_ID, "Google Maps link to current location: " + googleMapsLink, "");

        // Blink LED
        digitalWrite(LED_PIN, HIGH);
        delay(500);
        digitalWrite(LED_PIN, LOW);
      } else {
        Serial.println(F("- location: INVALID"));
      }

      Serial.print(F("- speed: "));
      if (gps.speed.isValid()) {
        Serial.print(gps.speed.kmph());
        Serial.println(F(" km/h"));
      } else {
        Serial.println(F("INVALID"));
      }

      Serial.print(F("- GPS date&time: "));
      if (gps.date.isValid() && gps.time.isValid()) {
        Serial.print(gps.date.year());
        Serial.print(F("-"));
        Serial.print(gps.date.month());
        Serial.print(F("-"));
        Serial.print(gps.date.day());
        Serial.print(F(" "));
        Serial.print(gps.time.hour());
        Serial.print(F(":"));
        Serial.print(gps.time.minute());
        Serial.print(F(":"));
        Serial.println(gps.time.second());
      } else {
        Serial.println(F("INVALID"));
      }

      Serial.println();
    }
  }

  if (millis() > 5000 && gps.charsProcessed() < 10)
    Serial.println(F("No GPS data received: check wiring"));

  // Check for accelerometer data
  sensors_event_t event;
  accel.getEvent(&event);

  // If acceleration exceeds threshold, trigger buzzer
  if (event.acceleration.x > 3.0 || event.acceleration.y > 3.0 || event.acceleration.z > 3.0) {
    digitalWrite(BUZZER_PIN, HIGH);
    delay(1000);
    digitalWrite(BUZZER_PIN, LOW);
  }
}