Creating and deploying a scheduling/recurring Cloud Function

const functions = require('firebase-functions');
const admin = require('firebase-admin');

// To avoid deployment errors, do not call admin.initializeApp() in your code

exports.dailyBenefit = functions.region('europe-central2')
  .runWith({
    memory: '256MB'
  })
  .pubsub.schedule('every day 00:00')
  .timeZone('Europe/Central')
  .onRun(async (context) => {
    // Write your code below!

    const ahorrosRef = admin.firestore().collection('ahorros');

    try {
      const querySnapshot = await ahorrosRef.get();

      const batch = admin.firestore().batch();

      querySnapshot.forEach(doc => {
        const docData = doc.data();
        const totalSavingValue = docData.TotalSavingValue || 0;
        const eaValue = (docData.EA/100) || 0;

        // Calculate the daily benefit
        const benefit = (totalSavingValue * eaValue) / 365;

        // Calculate the fullBenefit, taxedBenefit, and tax
        //const fullBenefit = benefit;
        const taxedBenefit = benefit * 0.93;
        const tax = benefit * 0.07;

        // Create a new transaction
        const newTransaction = {
          totalBefore: totalSavingValue,
          totalAfter: totalSavingValue + benefit,
          fullBenefit: benefit,
          taxedBenefit: taxedBenefit,
          tax: tax,
          monthEA: eaValue,
          date: admin.firestore.Timestamp.now(),
          transactionType: 'benefit',
          description: 'benefit credit'
        };

        // Update the document by incrementing the montoTotal and adding the transaction
        batch.update(doc.ref, {
          montoTotal: admin.firestore.FieldValue.increment(taxedBenefit),
          transactions: admin.firestore.FieldValue.arrayUnion(newTransaction)
        });
      });

      // Commit the batch operation
      await batch.commit();

      console.log('Daily updates completed successfully.');
      return null;
    } catch (error) {
      console.error('Error updating ahorros:', error);
      throw new Error('Error updating ahorros: ' + error.message);
    }
    
    // Write your code above!
  });