Eneko Ruiz.Eneko Ruiz.EnekoRuiz.Eneko Ruiz.

// taskSync.engine.ts — PWA Offline-First & MCP Core
export const syncTaskQueue = async (localQueue: TaskMutation[]) => {
  const db = await openIndexedDB("tasks_store", 1);
  const pending = await db.getAll("mutations");
  for (const mutation of pending) {
    try {
      const res = await fetch("/api/tasks/sync", {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify(mutation),
      });

// cryptoVault.ts — Zero-Knowledge AES-GCM & PBKDF2
export const encryptSecret = async (plainText: string, masterKey: CryptoKey) => {
  const iv = crypto.getRandomValues(new Uint8Array(12));
  const encoded = new TextEncoder().encode(plainText);
  const cipherBuffer = await crypto.subtle.encrypt(
    { name: "AES-GCM", iv, tagLength: 128 },
    masterKey,
    encoded
  );
  return {
    cipherText: arrayBufferToBase64(cipherBuffer),

// cyclePredictor.ts — Health Tracking & Period Prediction
export const predictNextCycle = (history: CycleRecord[]): PredictionResult => {
  if (history.length < 2) return defaultWindow();
  const sorted = [...history].sort((a, b) => b.startDate - a.startDate);
  const intervals = sorted.slice(0, 6).map((c, idx, arr) => 
    arr[idx + 1] ? differenceInDays(c.startDate, arr[idx + 1].startDate) : null
  ).filter(Boolean) as number[];
  const avgLength = Math.round(intervals.reduce((a, b) => a + b, 0) / intervals.length);
  const nextDate = addDays(sorted[0].startDate, avgLength);
  return { nextDate, fertileStart: addDays(nextDate, -14), fertileEnd: addDays(nextDate, -9) };
};

// players.controller.js — MongoDB Filter Engine
export const getPlayers = async (req, res) => {
  try {
    const { name, team, position } = req.query;
    const filter = {};
    if (name) filter.name = { $regex: name, $options: 'i' };
    if (team) {
      const teamDoc = await Team.findOne({ name: { $regex: team, $options: 'i' } });
      if (teamDoc) filter.teamId = teamDoc._id;
    }
    const players = await Player.find(filter).populate('teamId', 'name logo').populate('leagueId', 'name country').lean();

// RideService.java — JAX-WS Atomic Seat Lock
@WebMethod
public synchronized BookingResult reserveSeat(String rideId, String userId, int seat) {
  EntityTransaction tx = em.getTransaction();
  try {
    tx.begin();
    Ride ride = em.find(Ride.class, rideId, LockModeType.PESSIMISTIC_WRITE);
    if (ride.getSeats().get(seat).isOccupied()) {
      tx.rollback();
      return BookingResult.error("Taken");
    }

// parking.service.ts — Optimistic Locking
@Injectable()
export class ParkingService {
  async reserveSpot(spotId: string, userId: string, currentVersion: number) {
    const result = await this.db.spots.updateOne(
      { _id: spotId, version: currentVersion, status: 'AVAILABLE' },
      { $set: { status: 'OCCUPIED', reservedBy: userId, reservedAt: new Date() }, $inc: { version: 1 } }
    );
    if (result.modifiedCount === 0) throw new ConcurrencyException('Spot already updated');
    return { ok: true, spotId, reservedBy: userId };
  }