Examine the program for me and explain to me the weak points, if any, and the most important additions that will help in developing it
#include <Wire.h>
#include <Adafruit_Sensor.h>
#include <Adafruit_BMP280.h>
#include <Adafruit_MCP3008.h>
#include <BLEPeripheral.h>

Adafruit_BMP280 bmp;
#define SEALEVELPRESSURE_HPA (1013.25)

#define FLOW_SENSOR_PIN 2
volatile int flow_frequency;
unsigned int ml_per_hour;
unsigned long currentTime;
unsigned long cloopTime;
unsigned long flowStartTime;
unsigned long flowEndTime;
unsigned long totalVolume;
float maxFlowRate;
float averageFlowRate;

BLEPeripheral blePeripheral;

const float calibrationFactor = 7.5;

void setup() {
  Serial.begin(9600);
  
  if (!bmp.begin(0x76)) {
    Serial.println(F("Could not find a valid BMP280 sensor, check wiring!"));
    while (1);
  }

  pinMode(FLOW_SENSOR_PIN, INPUT);
  digitalWrite(FLOW_SENSOR_PIN, HIGH);
  attachInterrupt(digitalPinToInterrupt(FLOW_SENSOR_PIN), flow, RISING);

  blePeripheral.setLocalName("Uroflow Sensor");
  blePeripheral.setAdvertisedServiceUuid(blePeripheral.listUUIDs()[0]);
  blePeripheral.begin();

  BLEService pressureService("Pressure");
  BLECharacteristic pressureCharacteristic("PressureValue", BLERead | BLENotify);
  pressureService.addCharacteristic(pressureCharacteristic);
  blePeripheral.addService(pressureService);

  BLEService flowService("Flow");
  BLECharacteristic flowCharacteristic("FlowRate", BLERead | BLENotify);
  flowService.addCharacteristic(flowCharacteristic);
  blePeripheral.addService(flowService);
  
  maxFlowRate = 0;
  averageFlowRate = 0;
  totalVolume = 0;
}

void loop() {
  currentTime = millis();
  if (currentTime >= (cloopTime + 1000)) {
    cloopTime = currentTime;
    
    ml_per_hour = (flow_frequency / calibrationFactor);
    averageFlowRate = ml_per_hour;
    if (ml_per_hour > maxFlowRate) {
      maxFlowRate = ml_per_hour;
    }
    
    float pressure_hPa = bmp.readPressure() / 100.0F;
    
    // حساب الوقت للوصول إلى الحد الأقصى من التدفق
    if (ml_per_hour > 0) {
      flowStartTime = currentTime;
    }
    flowEndTime = currentTime - flowStartTime;
    
    // حساب إجمالي كمية البول المصنوعة
    totalVolume += ml_per_hour;
    
    // حساب وقت التفريغ (يمكنك ضبط حد بسيط لتحديد نهاية التفريغ)
    if (ml_per_hour < 500) {
      // إذا كان معدل التدفق منخفضًا (أقل من 500 ملليلتر في الساعة)، يعتبر ذلك نهاية التفريغ
      // يمكنك ضبط هذا الحد حسب احتياجاتك
      // إرسال البيانات إلى الهاتف المحمول
      blePeripheral.notifyCharacteristic(pressureCharacteristic);
      blePeripheral.notifyCharacteristic(flowCharacteristic);
      
      // طباعة القيم على الشاشة
      Serial.println("Uroflow Sensor Data:");
      Serial.print("Max Flow Rate: ");
      Serial.print(maxFlowRate, DEC);
      Serial.println(" ml/hour");
      Serial.print("Time to Max Flow: ");
      Serial.print(flowEndTime / 1000);
      Serial.println(" seconds");
      Serial.print("Average Flow Rate: ");
      Serial.print(averageFlowRate, DEC);
      Serial.println(" ml/hour");
      Serial.print("Total Volume: ");
      Serial.print(totalVolume, DEC);
      Serial.println(" ml");
      Serial.print("Voiding Time: ");
      Serial.print(flowEndTime / 1000);
      Serial.println(" seconds");
      
      // إعادة تعيين القيم للقياس الجديد
      maxFlowRate = 0;
      averageFlowRate = 0;
      totalVolume = 0;
    }
  }
}

void flow() {
  flow_frequency++;
}