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import styles from './header.module.css';
import type { IconType } from 'react-icons';
import { SiBitcoincash, SiGithub, SiLinkedin, SiReadthedocs, SiReddit, SiStorybook } from 'react-icons/si';
import { FaChartPie, FaCheckDouble } from 'react-icons/fa';
import { FaGaugeHigh } from 'react-icons/fa6';
import { useRouter } from 'next/router';
import { useIntl } from 'react-intl';
import { socialLinks, translateRoute } from '@/constants/site';
import CryptoPrice from '@/components/CryptoPrice';
import ViewCounter from '@/components/Blog/ViewCounter';
import IndexedCounter from '@/components/IndexedCounter';
import CountDown from '@/components/CountDown';
import Heating from '@/components/Heating';
import Tooltip from '@/components/Tooltip';
import DeploymentStatus from '@/components/DeploymentStatus';
import GithubStars from '@/components/GithubStars';
import dynamic from 'next/dynamic';
const Weather = dynamic(() => import('@/components/Weather'), {
ssr: false,
});
/**
* @description This component is a Clock and a Weather Widget
* @param {ReactNode} children - The children
* @param {number} minutes - The number of minutes to update the clock
* @returns {JSX.Element}
*/
const DateAndHour = ({ children, minutes = 1 }: { children?: ReactNode; minutes?: number }) => {
const { formatMessage: f, formatDate, formatTime } = useIntl();
/**
* `null` until the component mounts, so the server and the first client render agree and no
* field needs `suppressHydrationWarning`.
*
* This used to be `useState(new Date())` with all four spans marked `suppressHydrationWarning`,
* and it showed the wrong date on the live site. That attribute tells React to keep the
* server's text and skip the DOM patch; afterwards React only rewrites a node whose value
* differs from the previous CLIENT render. The weekday, day and month are the same from one
* render to the next, so the DOM kept the text from **the moment the page was built** — and
* these pages are statically generated, so that could be weeks old. Only the time recovered,
* because the interval below changes it every minute.
*
* Measured on a production build with the clock pinned to 2026-01-15: `new Date()` in the page
* returned that instant while the header read `Sat 26 Sep 10:41 PM`, the build's own timestamp.
*/
const [date, setDate] = React.useState<Date | null>(null);
const [openWeatherWidget, setOpenWeatherWidget] = React.useState<boolean>(false);
// Through react-intl rather than `toLocaleDateString(locale)`: Chromium has no Galician data, so
// on /gl the native call wrote the clock in the browser's language (`src/intl/galician.ts`).
const day = date ? formatDate(date, { weekday: 'short' }) : '';
const dayNumber = date ? formatDate(date, { day: 'numeric' }) : '';
const month = date ? formatDate(date, { month: 'short' }) : '';
const hour = date ? formatTime(date, { hour: 'numeric', minute: 'numeric' }) : '';
const handleWeatherClick = React.useCallback(() => {
setOpenWeatherWidget(true);
}, []);
React.useEffect(() => {
// The first call is what puts a date on screen at all; the interval only keeps it current.
setDate(new Date());
const interval = setInterval(() => {
setDate(new Date());
}, 60000 * minutes);
return () => clearInterval(interval);
}, [minutes]);
return (
<div className={styles.clock}>
<Tooltip>
<Tooltip.Trigger>
<button
type="button"
className={styles.dateAndHour}
onClick={handleWeatherClick}
// Marks the pre-mount state so the stylesheet can hold the slot open. The
// clock is `width: max-content` at the right end of a row that is anchored
// right, so an empty one drags every status item 118px across (measured on
// a production build at 1280px: `en` 130.2px filled against 12.0px empty).
// The browser scores that at 0.00038 CLS because the bar is 24px tall, but
// it is plainly visible, and it is new — the old markup always rendered
// text, wrong text.
data-pending={date === null ? '' : undefined}
>
<span>{day}</span>
<span>{dayNumber}</span>
<span>{month}</span>
<span>{hour}</span>
</button>
</Tooltip.Trigger>
<Tooltip.Content>{f({ id: 'weather.tooltip' })}</Tooltip.Content>
</Tooltip>
{children &&
React.cloneElement(children as React.ReactElement<{ open?: boolean; handleClose?: () => void }>, {
open: openWeatherWidget,
handleClose: () => setOpenWeatherWidget(false),
})}
</div>
);
};
/**
* @description Translate the route to the current language
* @returns {JSX.Element}
*/
const Route = () => {
const { pathname } = useRouter();
const { formatMessage } = useIntl();
const route = translateRoute(pathname, formatMessage);
return <span className={styles.route}>{route}</span>;
};
/**
* SDD-L12-T8. One icon per status item, keyed by `testId` so a rename in `site.ts` fails loudly
* here rather than silently rendering nothing. Kept in the component because `site.ts` is data —
* importing React components into it would make every consumer of the constants pull in icons.
*/
const STATUS_ICONS: Record<string, IconType> = {
'linkedin-link': SiLinkedin,
'github-link': SiGithub,
'reddit-link': SiReddit,
'storybook-link': SiStorybook,
'docs-link': SiReadthedocs,
/**
* The last three are generic glyphs rather than the brands they link to, for the same reason in
* each case: all three point at a report this repository generates about itself, so there is no
* brand to honour, and all three brand marks fail the bar's sizing rule.
*
* A pie chart, not Codecov's umbrella: the umbrella inks 28% of its box against the bar's 56%
* median, which no size inside a 24px bar could correct.
*
* A double check and a gauge, not Playwright's masks and Lighthouse's tower. The bar sizes every
* glyph so its largest side is exactly 16px (`header.module.css`), which leaves the shorter side
* to the glyph's own proportions — and those two were the extremes of the set, the masks at
* 1.37:1 and the tower at 0.67:1 against 0.77-1.06 for everything else. Measured on the
* candidates, both replacements are 1.000:1 and ink their box on both axes, so a ruler laid
* across the row reads the same on either one. A double check is what a green e2e run reports,
* and a gauge is the dial Lighthouse draws its score on.
*/
'coverage-link': FaChartPie,
'e2e-link': FaCheckDouble,
'lighthouse-link': FaGaugeHigh,
};
/**
* @description The profile and artifact links, as icons in the left zone beside the identity.
*
* SDD-L12-T9. T8 put them in the right zone, which read as a second cluster of status items hanging
* off the countdown. They are navigation, not status — on a macOS menu bar that belongs next to the
* app identity — and that is also where they were before T8 moved them.
* @returns {JSX.Element}
*/
const NavLinks = () => {
const { formatMessage: f } = useIntl();
return (
// SDD-L05: landmark navigation listed "navigation, navigation" (four of them on a post page)
// with nothing to tell the social links from the Dock from the category sidebar.
<nav className={styles.navLinks} aria-label={f({ id: 'nav.social' })}>
{socialLinks.map((item) => {
const Icon = STATUS_ICONS[item.testId];
return (
<a
key={item.href}
href={item.href}
target="_blank"
rel="noopener noreferrer"
title={item.title}
data-testid={item.testId}
// SDD-L12-T8: the visible label is now an icon, so the accessible name has
// to come from here. Without it these read as "link, link, link" — the
// exact defect L05/L06 spent two phases removing from the rest of the page.
aria-label={item.title}
// Carries the optical size and box width the icon is drawn at — one rule per
// icon in the stylesheet rather than nine classes threaded through here.
data-icon={item.testId}
className={styles[`shed${item.shed}`]}
>
{Icon ? <Icon aria-hidden="true" /> : item.name}
</a>
);
})}
</nav>
);
};
/**
* @description Header navigation bar component with the following features:
* - Bitcoin logo
* - Current route
* - Social links
* - XRP price
* - Indexed pages counter
* - Total views counter
* - Heating temperature
* - Date and hour
* - Weather Widget
* @param {ReactNode} children - The children to display: ;
* @returns {JSX.Element}
*/
const Header = ({ children }: { children?: ReactNode }) => {
const { formatMessage: f } = useIntl();
return (
<header data-testid="header" className={styles.header}>
{/**
* SDD-L12-T8. Three zones, because that is what a macOS menu bar is: the app identity on
* the left, the clock and status items on the right, and — here — the countdown holding
* the middle. It replaced a nine-column grid that laid every widget out in a single run
* and simply overflowed when the run got long.
*/}
<div className={styles.left}>
<SiBitcoincash aria-hidden="true" />
<Route />
<NavLinks />
</div>
<div className={styles.center}>
<CountDown date="2026-12-11T00:00:00+00:00" caption={f({ id: 'countdown.caption' })} />
</div>
{/**
* Shed order, cheapest information per pixel first. The classes are `shedN`, and the
* widths behind each breakpoint are tabulated in `header.module.css` — they are derived
* from measurements, not chosen for tidiness.
*/}
<div className={styles.right}>
<span className={styles.statusDot}>
<DeploymentStatus />
</span>
<span className={`${styles.statusItem} ${styles.shed3}`}>
<CryptoPrice />
</span>
<span className={`${styles.statusItem} ${styles.shed4}`}>
<IndexedCounter />
</span>
{/**
* These two render TWO values each — `ViewCounter all` is page views AND new users,
* `Heating` is the outside and measured temperatures — so they are the widest items
* in the row and the first to shed. They used to carry a per-widget slot width;
* every item is now `max-content` and the ladder is derived from their worst case.
*/}
<span className={`${styles.statusItem} ${styles.shed1}`}>
<ViewCounter all />
</span>
<span className={`${styles.statusItem} ${styles.shed2}`}>
<Heating />
</span>
{/**
* Last before the clock, which is where macOS puts the extras a person added
* themselves, and the only status item here that is also an invitation.
*/}
<span className={`${styles.slotStars} ${styles.shed7}`}>
<GithubStars />
</span>
<DateAndHour>
<Weather cities={['limerick+ireland', 'moraña+galicia', 'vilagarcía+galicia']} />
</DateAndHour>
{children}
</div>
</header>
);
};
export default Header;
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