#include <Wire.h>
#include <Adafruit_BMP085.h>
#include <Adafruit_MPU6050.h>
#include <Adafruit_Sensor.h>
#include <DHT.h>

// -------------------------
// Pines
// -------------------------
#define I2C_SDA_PIN 21
#define I2C_SCL_PIN 22

#define DHT_PIN 4
#define DHT_TYPE DHT22

#define FLOW_PIN 34

// -------------------------
// Objetos de sensores
// -------------------------
Adafruit_BMP085 bmp;
Adafruit_MPU6050 mpu;
DHT dht(DHT_PIN, DHT_TYPE);

// -------------------------
// Variables de lectura
// -------------------------
float pressure_hPa = 0.0;
float bmpTemperatureC = 0.0;
float dhtTemperatureC = 0.0;
float humidity = 0.0;
float accelX = 0.0;
float accelY = 0.0;
float accelZ = 0.0;
int flowRaw = 0;
float flowPercent = 0.0;
unsigned long lastReadTime = 0;
const unsigned long READ_INTERVAL_MS = 1000;  // 1 segundo
// -------------------------
// Funciones auxiliares
// -------------------------
void readSensors() {
  // BMP180
  pressure_hPa = bmp.readPressure() / 100.0;   // Pa -> hPa
  bmpTemperatureC = bmp.readTemperature();

  // DHT22
  dhtTemperatureC = dht.readTemperature();
  humidity = dht.readHumidity();

  // MPU6050
  sensors_event_t accel, gyro, temp;
  mpu.getEvent(&accel, &gyro, &temp);

  accelX = accel.acceleration.x;
  accelY = accel.acceleration.y;
  accelZ = accel.acceleration.z;

  // Potenciómetro como flow sensor
  flowRaw = analogRead(FLOW_PIN);              // 0 a 4095
  flowPercent = (flowRaw / 4095.0) * 100.0;    // porcentaje simple
}

void printReadings() {
  Serial.println("===== Initial Sensor Snapshot =====");

  Serial.print("BMP180 Pressure [hPa]: ");
  Serial.println(pressure_hPa, 2);

  Serial.print("BMP180 Temperature [C]: ");
  Serial.println(bmpTemperatureC, 2);

  Serial.print("DHT22 Temperature [C]: ");
  if (isnan(dhtTemperatureC)) {
    Serial.println("ERROR");
  } else {
    Serial.println(dhtTemperatureC, 2);
  }

  Serial.print("DHT22 Humidity [%]: ");
  if (isnan(humidity)) {
    Serial.println("ERROR");
  } else {
    Serial.println(humidity, 2);
  }

  Serial.print("MPU6050 Accel X [m/s^2]: ");
  Serial.println(accelX, 3);

  Serial.print("MPU6050 Accel Y [m/s^2]: ");
  Serial.println(accelY, 3);

  Serial.print("MPU6050 Accel Z [m/s^2]: ");
  Serial.println(accelZ, 3);

  Serial.print("Flow Raw [0-4095]: ");
  Serial.println(flowRaw);

  Serial.print("Flow [%]: ");
  Serial.println(flowPercent, 2);

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

void setup() {
  Serial.begin(115200);
  delay(500);

  Serial.println("Starting ESP32 well sensor initialization...");

  // Inicialización I2C
  Wire.begin(I2C_SDA_PIN, I2C_SCL_PIN);

  // Configuración ADC del ESP32
  pinMode(FLOW_PIN, INPUT);

  // Inicialización DHT22
  dht.begin();

  // Inicialización BMP180
  if (!bmp.begin()) {
    Serial.println("ERROR: BMP180 not found. Check wiring.");
  } else {
    Serial.println("BMP180 initialized successfully.");
  }

  // Inicialización MPU6050
  if (!mpu.begin()) {
    Serial.println("ERROR: MPU6050 not found. Check wiring.");
  } else {
    Serial.println("MPU6050 initialized successfully.");
  }

  Serial.println("DHT22 initialized.");
  Serial.println("ADC flow input initialized.");
  Serial.println();

  // Captura inicial
  readSensors();
  printReadings();
}


void loop() {
  unsigned long now = millis();

  if (now - lastReadTime >= READ_INTERVAL_MS) {
    lastReadTime = now;
    readSensors();
    printReadings();
  }
}