/**
 * Copyright (c) 2026 Niolla
 * All rights reserved.
 *
 * This source code is proprietary and confidential.
 * Unauthorized copying, modification, distribution, or use
 * of this file, via any medium, is strictly prohibited.
 */

// utils/referenceNumber.util.js

const { referenceNumber  } = require("../models");
const { sequelize } = require("../models");
const crypto = require("crypto");

const pad = (num, size = 4) => {
  return String(num).padStart(size, "0");
};

const nextSequence = async (sequenceKey, transaction) => {
  const options = {
    where: { sequence_key: sequenceKey },
  };

  // Only add transaction and lock if transaction is provided
  if (transaction) {
    options.transaction = transaction;
    options.lock = transaction.LOCK.UPDATE;
  }

  let sequence = await referenceNumber.findOne(options);

  if (!sequence) {
    const createOptions = transaction ? { transaction } : {};
    
    sequence = await referenceNumber.create(
      {
        id: crypto.randomUUID(),
        sequence_key: sequenceKey,
        current_number: 1,
      },
      createOptions
    );

    return 1;
  }

  sequence.current_number += 1;

  const saveOptions = transaction ? { transaction } : {};
  await sequence.save(saveOptions);

  return sequence.current_number;
};

module.exports = { nextSequence, pad };