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* @file AppFooter.tsx
* @module app/footer/AppFooter
*
* @summary
* Main application footer component (replaces Footer.tsx).
* Thin orchestrator managing footer layout and section composition.
* Displays legal info, support links, system health, and localization.
*
* @enterprise
* - Collapsible details panel (click expand button)
* - Compact status bar always visible
* - Real-time system health monitoring
* - i18n support for all text
* - Responsive layout for mobile and desktop
* - Full TypeDoc coverage for footer orchestration
*/
import {
Box,
Container,
Typography,
Divider,
Stack,
Collapse,
IconButton,
} from '@mui/material';
import ExpandMoreIcon from '@mui/icons-material/ExpandMore';
import { useTranslation } from 'react-i18next';
import { useFooterState } from './useFooterState';
import FooterLegal from './FooterLegal';
import FooterLinks from './FooterLinks';
import HealthStatusDisplay from './HealthStatusDisplay';
import LocalizationDisplay from './LocalizationDisplay';
import FooterMetaInfo from './FooterMetaInfo';
/**
* Application footer component.
*
* Thin orchestrator that delegates to focused sub-components.
* Manages collapsible details panel and compact status bar layout.
*
* Features:
* - Collapsible details section with legal, links, health, and localization
* - Compact always-visible status bar
* - Real-time system health monitoring
* - i18n support for all labels and text
* - Responsive design for mobile and desktop
*
* @returns JSX element rendering the application footer
*
* @example
* ```tsx
* <AppFooter />
* ```
*/
export default function AppFooter() {
const { t } = useTranslation(['common', 'footer']);
const { detailsOpen, toggleDetails, health, config } = useFooterState();
return (
<Box
component="footer"
sx={{
mt: 'auto',
borderTop: '1px solid',
borderTopColor: 'divider',
bgcolor: 'background.default',
zIndex: (theme) => theme.zIndex.appBar - 1,
}}
>
<Container maxWidth="xl" sx={{ py: 0.5 }}>
{/* Collapsible Details Panel */}
<Collapse in={detailsOpen} unmountOnExit>
<Stack
direction={{ xs: 'column', sm: 'row' }}
spacing={2}
sx={{ mb: 0.75 }}
>
{/* Legal & Meta Information */}
<FooterLegal
appVersion={config.appVersion}
buildId={config.buildId}
environment={config.environment}
/>
{/* Support & Documentation Links */}
<FooterLinks />
{/* System Health Status */}
<Box sx={{ minWidth: 0, flex: 1 }}>
<Typography
variant="caption"
sx={{ fontWeight: 600, display: 'block', mb: 0.25 }}
>
{t('footer:section.health', 'System Health')}
</Typography>
<HealthStatusDisplay health={health} />
</Box>
{/* Language & Region */}
<LocalizationDisplay
currentLanguage={config.currentLanguage}
region={config.region}
/>
</Stack>
<Divider sx={{ mb: 0.5 }} />
{/* Privacy Notice */}
<Typography
variant="caption"
color="text.secondary"
display="block"
sx={{ mb: 0.5, lineHeight: 1.4 }}
>
{t('footer:privacy.notice', 'This portfolio showcases a fictional enterprise inventory system. No real customer data is stored. For demonstration purposes only.')}
</Typography>
</Collapse>
{/* Compact Status Bar (always visible) */}
<Stack
direction="row"
alignItems="center"
justifyContent="space-between"
spacing={2}
sx={{ minHeight: 40 }}
>
{/* Meta Information */}
<FooterMetaInfo
appVersion={config.appVersion}
buildId={config.buildId}
environment={config.environment}
currentLanguage={config.currentLanguage}
region={config.region}
/>
{/* Health Status and Expand Button */}
<Stack
direction="row"
spacing={1}
alignItems="center"
sx={{ flexShrink: 0 }}
>
<HealthStatusDisplay health={health} />
<Divider orientation="vertical" flexItem />
<IconButton
size="small"
onClick={toggleDetails}
aria-label="Footer details"
sx={{ ml: 0.5 }}
>
<ExpandMoreIcon
sx={{
fontSize: '1.1rem',
transform: detailsOpen ? 'rotate(180deg)' : 'rotate(0deg)',
transition: 'transform 0.2s',
}}
/>
</IconButton>
</Stack>
</Stack>
</Container>
</Box>
);
}
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