/**
 * Micro-interaction test fixtures with deterministic seeds (MI8)
 *
 * Usage:
 * - Import these constants in Storybook stories and Playwright tests
 * - Use frozenTimestamp for all date operations
 * - Use rngSeed for any randomized content
 */

// Frozen timestamp: 2025-12-04T12:00:00Z (as per advisory)
export const FROZEN_TIMESTAMP = new Date('2025-12-04T12:00:00.000Z');
export const FROZEN_TIMESTAMP_MS = 1733313600000;

// Fixed RNG seed as per advisory: 0x5EED2025
export const RNG_SEED = 0x5EED2025;

// Deterministic UUID generator (seeded)
export function seededUuid(seed: number = RNG_SEED, index: number = 0): string {
  const hash = ((seed + index) * 2654435761) >>> 0;
  const hex = hash.toString(16).padStart(8, '0');
  return `${hex.slice(0, 8)}-${hex.slice(0, 4)}-4${hex.slice(1, 4)}-8${hex.slice(4, 7)}-${hex}0000`.slice(0, 36);
}

// Skeleton state fixture
export const skeletonFixture = {
  showAfterMs: 400,
  loadingDurationMs: 1200,
  state: 'loading' as const,
  timestamp: FROZEN_TIMESTAMP,
};

// Error state fixture
export const errorFixture = {
  code: 'UI_ERR_001',
  message: 'Failed to load data',
  retryAvailable: true,
  timestamp: FROZEN_TIMESTAMP,
  correlationId: seededUuid(RNG_SEED, 1),
};

// Offline state fixture
export const offlineFixture = {
  isOffline: true,
  lastOnline: new Date(FROZEN_TIMESTAMP_MS - 300000), // 5 minutes ago
  cachedDataAge: 'less than 1 hour',
  timestamp: FROZEN_TIMESTAMP,
};

// Toast/snackbar fixture
export const toastFixture = {
  id: seededUuid(RNG_SEED, 2),
  type: 'info' as const,
  message: 'Changes saved successfully',
  undoAvailable: true,
  undoWindowMs: 8000,
  timestamp: FROZEN_TIMESTAMP,
};

// Reduced motion test config
export const reducedMotionConfig = {
  enabled: true,
  emulateQuery: true,
  dataAttribute: 'data-reduce-motion',
  dataValue: '1',
};

// Playwright/Storybook timer config
export const timerConfig = {
  useFakeTimers: true,
  now: FROZEN_TIMESTAMP_MS,
  shouldAdvanceTime: false,
};

// Sample telemetry event
export const sampleTelemetryEvent = {
  schema_version: 'v1.0',
  event_type: 'ui.micro.interaction',
  timestamp: FROZEN_TIMESTAMP.toISOString(),
  tenant_id: 'test-tenant',
  surface: 'dashboard',
  component: 'button',
  action: 'click',
  latency_ms: 45,
  outcome: 'success',
  reduced_motion: false,
  offline_mode: false,
  error_code: null,
  correlation_id: seededUuid(RNG_SEED, 3),
};