API Documentation

Complete API reference for all utilities, hooks, and components.

Table of Contents

• Hooks
• Components
• Utilities
• Services

Hooks

useForm

Form handling and validation hook.

import { useForm } from '@/hooks/useForm';

const { values, handleChange, handleSubmit, errors, isSubmitting } = useForm({
  initialValues: { email: '', password: '' },
  validation: {
    email: { required: true, email: true },
    password: { required: true, minLength: 8 },
  },
  onSubmit: async (values) => {
    // Handle form submission
  },
});

Options:

• initialValues: Initial form values
• validation: Validation rules
• onSubmit: Submit handler

Returns:

• values: Current form values
• handleChange: Change handler
• handleSubmit: Submit handler
• errors: Validation errors
• isSubmitting: Submission state

useDataFetch

Data fetching hook with caching and retry.

import { useDataFetch } from '@/hooks/useDataFetch';

const { data, isLoading, error, refetch } = useDataFetch('/api/data', {
  cache: { strategy: 'cache-first', ttl: 60000 },
  retries: 3,
  refetchInterval: 5000,
});

Options:

• url: API endpoint
• cache: Caching options
• retries: Number of retries
• refetchInterval: Auto-refetch interval

useI18n

Internationalization hook.

import { useI18n } from '@/hooks/useI18n';

const { locale, t, changeLocale } = useI18n();

// Translate
const text = t('common.loading');

// Change language
changeLocale('de');

useKeyboardShortcut

Register keyboard shortcuts.

import { useKeyboardShortcut } from '@/hooks/useKeyboardShortcut';

useKeyboardShortcut({
  key: 'k',
  ctrl: true,
  action: () => {
    // Handle shortcut
  },
  description: 'Open search',
});

useClipboard

Clipboard operations.

import { useClipboard } from '@/hooks/useClipboard';

const { copy, read, copied } = useClipboard();

// Copy to clipboard
await copy('Text to copy');

// Read from clipboard
const text = await read();

usePersistedState

State that persists to localStorage.

import { usePersistedState } from '@/hooks/usePersistedState';

const [state, setState] = usePersistedState('my-key', initialValue);

useMobile

Mobile device detection.

import { useMobile } from '@/hooks/useMobile';

const { isMobile, isTouch, viewport } = useMobile();

useAnimation

Animation hook.

import { useAnimation } from '@/hooks/useAnimation';

const ref = useAnimation({
  type: 'fade',
  direction: 'up',
  duration: 300,
  trigger: 'scroll',
});

Components

Modal

Modal dialog component.

import Modal from '@/components/Modal';

<Modal
  isOpen={isOpen}
  onClose={() => setIsOpen(false)}
  title="Modal Title"
  size="md"
>
  Modal content
</Modal>

Props:

• isOpen: Whether modal is open
• onClose: Close handler
• title: Modal title
• size: 'sm' | 'md' | 'lg' | 'xl' | 'full'
• closeOnOverlayClick: Close on overlay click
• closeOnEscape: Close on Escape key

Tooltip

Tooltip component.

import Tooltip from '@/components/Tooltip';

<Tooltip content="Tooltip text" position="top">
  <button>Hover me</button>
</Tooltip>

Props:

• content: Tooltip content
• position: 'top' | 'bottom' | 'left' | 'right'
• delay: Delay in milliseconds

Dropdown

Dropdown menu component.

import Dropdown from '@/components/Dropdown';

<Dropdown
  trigger={<button>Menu</button>}
  items={[
    { id: '1', label: 'Item 1', onClick: () => {} },
    { id: '2', label: 'Item 2', onClick: () => {} },
  ]}
  position="bottom-left"
/>

Accordion

Accordion component.

import Accordion from '@/components/UI/Accordion';

<Accordion
  items={[
    { id: '1', title: 'Title 1', content: <p>Content 1</p> },
    { id: '2', title: 'Title 2', content: <p>Content 2</p> },
  ]}
  allowMultiple={false}
/>

Tabs

Tabs component.

import Tabs from '@/components/UI/Tabs';

<Tabs
  tabs={[
    { id: '1', label: 'Tab 1', content: <p>Content 1</p> },
    { id: '2', label: 'Tab 2', content: <p>Content 2</p> },
  ]}
  defaultTab="1"
/>

FileUpload

File upload component.

import FileUpload from '@/components/FileUpload';

<FileUpload
  accept="image/*"
  maxSize={10 * 1024 * 1024}
  onUpload={async (files) => {
    // Handle upload
  }}
/>

MultiStepForm

Multi-step form component.

import MultiStepForm from '@/components/MultiStepForm';

<MultiStepForm
  steps={[
    { id: '1', title: 'Step 1', component: <Step1Form /> },
    { id: '2', title: 'Step 2', component: <Step2Form /> },
  ]}
  initialValues={{}}
  onSubmit={async (values) => {
    // Handle submission
  }}
/>

Utilities

Search

Advanced search with fuzzy matching.

import { searchApps } from '@/lib/search';

const results = searchApps(apps, 'query', {
  threshold: 0.3,
  limit: 50,
  fuzzy: true,
});

Caching

Advanced caching strategies.

import { advancedCache } from '@/lib/advanced-cache';

const data = await advancedCache.get(
  'key',
  async () => {
    // Fetch data
    return fetch('/api/data').then(r => r.json());
  },
  {
    strategy: 'stale-while-revalidate',
    ttl: 60000,
  }
);

Image Optimization

Image optimization utilities.

import { getOptimizedImageUrl, compressImage } from '@/lib/image-handling';

// Get optimized URL
const url = getOptimizedImageUrl('/image.jpg', {
  width: 800,
  quality: 80,
  format: 'webp',
});

// Compress image
const compressed = await compressImage(file, 1920, 1080, 0.8);

Notifications

Notification system.

import { notifications } from '@/lib/notifications';

// Show notification
notifications.success('Success!', 'Operation completed');
notifications.error('Error!', 'Something went wrong');
notifications.warning('Warning!', 'Please check');
notifications.info('Info', 'New update available');

Analytics

Advanced analytics.

import { advancedAnalytics } from '@/lib/analytics-advanced';

// Identify user
advancedAnalytics.identify('user-id', { email: 'user@example.com' });

// Track event
advancedAnalytics.trackEvent({
  name: 'button_click',
  category: 'interaction',
  label: 'Submit Button',
});

// Track conversion
advancedAnalytics.trackConversion('purchase', 99.99);

Error Recovery

Error recovery system.

import { errorRecovery } from '@/lib/error-recovery';

// Register recovery strategy
errorRecovery.register({
  name: 'custom-recovery',
  priority: 10,
  canRecover: (error) => error.message.includes('network'),
  recover: async () => {
    // Recovery logic
  },
});

// Try recovery
const recovered = await errorRecovery.tryRecover(error);

State Persistence

State persistence utilities.

import { statePersistence } from '@/lib/state-persistence';

// Save state
statePersistence.save('key', value, {
  storage: 'localStorage',
  version: 1,
});

// Load state
const value = statePersistence.load('key', {
  storage: 'localStorage',
  version: 1,
});

Services

i18n Service

Internationalization service.

import { i18n } from '@/lib/i18n';

// Set locale
i18n.setLocale('de');

// Translate
const text = i18n.t('common.loading');

// Add translations
i18n.addTranslations('de', {
  common: { loading: 'Lädt...' },
});

Monitoring Service

Performance monitoring.

import { monitoring } from '@/lib/monitoring';

// Record metric
monitoring.recordMetric({
  name: 'api_response_time',
  value: 150,
  unit: 'ms',
});

// Record event
monitoring.recordEvent({
  name: 'user_action',
  properties: { action: 'click' },
});

Keyboard Shortcuts

Keyboard shortcuts manager.

import { keyboardShortcuts } from '@/lib/keyboard-shortcuts';

// Register shortcut
const unregister = keyboardShortcuts.register({
  key: 'k',
  ctrl: true,
  action: () => {
    // Handle shortcut
  },
});

// Unregister
unregister();