Service Layer medium complexity mobile
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Integrations

Description

Coordinates reading and writing user preferences across local storage and the backend. Applies side effects such as toggling biometric unlock, switching language, and clearing cached data. Reconciles local and remote state so changes follow the user across devices.

Feature: App Settings & Preferences

preferences-service

Sources & reasoning

Source explicitly lists Settings and preferences as a mobile screen accessible from the hamburger menu, which is exactly the App Settings & Preferences feature in the Home & Navigation area.

Responsibilities

  • Load and merge preferences from local store and backend on startup
  • Persist preference changes locally and sync them to the backend
  • Apply runtime effects for language, accessibility, and biometric settings
  • Trigger cache clearing and sign-out flows on demand
  • Expose the current enabled-module set to gate preference sections

Interfaces

getPreferences(): Preferences
updatePreference(key, value): Promise<void>
syncWithBackend(): Promise<void>
clearCachedData(): Promise<void>
signOut(): Promise<void>

Related Data Entities (2)

Data entities managed by this component