# 077: Conditional Sync
# Sync only when conditions are met

# Sync only on WiFi
save_document(doc):
  store doc locally as "documents/{doc.id}"

  # Only sync to cloud if on WiFi
  if network.type == "wifi" and user.settings.cloud_sync:
    sync doc to cloud

# Sync only if changed
update_preferences(prefs):
  old_prefs = load "preferences" locally

  store prefs locally as "preferences"

  # Only sync if actually different
  if prefs != old_prefs:
    sync prefs to cloud

# Sync based on data size
save_photo(photo):
  store photo locally as "photos/{photo.id}"

  # Large files only sync on WiFi
  if photo.size > 10MB:
    if network.type == "wifi":
      sync photo to cloud
  else:
    # Small files sync on any connection
    sync photo to cloud

# Sync during idle time
queue_sync(data):
  store data locally as "sync_queue/{data.id}"

  # Wait for idle period
  on idle:
    process_sync_queue()

process_sync_queue():
  queue = load "sync_queue" locally

  for item in queue:
    if network.online:
      sync item to cloud
      delete "sync_queue/{item.id}" locally

# User-controlled sync
button "Sync Now" -> manual_sync()
button "Sync All" -> sync_all_data()

manual_sync():
  if network.online:
    sync_all_data()
  else:
    show "No internet connection"