#include <Wire.h>
#include "DHTesp.h"
#include "NMEA.h"
#include "WiFi.h"

#define alto 64
#define ancho 128

#define WIFI_SSID "Wokwi-GUEST"
#define WIFI_PASSWORD ""
// Defining the WiFi channel speeds up the connection:
#define WIFI_CHANNEL 6

int sensorPin = 34;
const int DHT_PIN = 32;
DHTesp dhtSensor;
union {
  char bytes[4];
  float valor;
} velocidadeGPS;

float latitude;
float longitude;

NMEA gps(GPRMC);

void setup() {
  Serial.begin(115200);

  WiFi.begin(WIFI_SSID, WIFI_PASSWORD, WIFI_CHANNEL);
  Serial.print("Connecting to WiFi ");
  Serial.print(WIFI_SSID);
  // Wait for connection
  while (WiFi.status() != WL_CONNECTED) {
    delay(100);
    Serial.print(".");
  }
  Serial.println(" Connected!");

  // DHT22 setup
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);

  // GPS setup
  Serial.begin(9600); // Serial1 is connected to the custom chip
  Serial.println("Data received from GPS Fake:");
}

void loop() {
    // GPS
  while (Serial.available()) {
    char serialData = Serial.read();
    Serial.print(serialData);

    if (gps.decode(serialData)) {
      if (gps.gprmc_status() == 'A') {
        velocidadeGPS.valor = gps.gprmc_speed(KMPH);
      } else {
        velocidadeGPS.valor = 0;
      }

      latitude = gps.gprmc_latitude();
      longitude = gps.gprmc_longitude();

      Serial.println();
      Serial.println();

      Serial.print(" Latitude: ");
      Serial.println(latitude, 8);

      Serial.print("Longitude: ");
      Serial.println(longitude, 8);

      Serial.print("    Speed: ");
      Serial.print(velocidadeGPS.valor);
      Serial.println(" Km/h");

      convertCoordinatesToCartesian(latitude, longitude);
    }
  }
 
  // MQ135 gas sensor
int lecturaMQ135 = analogRead(sensorPin);
delay(500);

float ppm = 1200.0 / 1023.0;
float co = ppm * lecturaMQ135;
Serial.print(" ");
Serial.print("Measure the amount of CO gas: ");
Serial.print(co);
Serial.println(" ppm");
delay(1000);

if (co <= 350) {
  Serial.println("High air quality");
} else if (350 < co && co <= 800) {
  Serial.println("Air quality is moderate");
} else if (800 < co && co <= 1200) {
  Serial.println("Low air quality");
} else {
  Serial.println("Poor air quality");
}

  // DHT22 sensor
  TempAndHumidity data = dhtSensor.getTempAndHumidity();
  Serial.println("Temp: " + String(data.temperature, 2) + "°C");
  Serial.println("Humidity: " + String(data.humidity, 1) + "%");

  delay(2000);

  // Light sensor
  int lightvalue = analogRead(A0);
  lightvalue = map(lightvalue, 1023, 0, 0, 100);

  
  Serial.println("Brightness:");
  Serial.print(lightvalue);
  Serial.print("%");
  delay(2000);


  Serial.println("---");
}

void convertCoordinatesToCartesian(float latitude, float longitude) {
  float latRadius = latitude * (PI) / 180;
  float lonRadius = longitude * (PI) / 180;

  int earthRadius = 6371;

  float posX = earthRadius * cos(latRadius) * cos(lonRadius);
  float posY = earthRadius * cos(latRadius) * sin(lonRadius);

  Serial.print("        X: ");
  Serial.println(posX);
  Serial.print("        Y: ");
  Serial.println(posY);
}