The dashboard greeting was a fully static "Goedemorgen..." regardless of
actual time of day. New frontend/src/i18n/greeting.ts::getGreetingPeriod
is a pure, clock-injectable function resolving one of 4 periods (05:00-
11:59 morning, 12:00-17:59 afternoon, 18:00-22:59 evening, 23:00-04:59
night) against Europe/Brussels wall-clock time via
Intl.DateTimeFormat({ timeZone, hourCycle: "h23" }), which is DST-safe
by construction.
useGreetingPeriod.ts wires this into React with a 30s poll so the
greeting rolls over live while the app stays open, no reload required.
Each period now has its own greeting word and accompanying sentence in
all 3 languages (dashboard.json), replacing both the fixed "Goedemorgen"
and the fixed "Here's the fleet" follow-up sentence. Night never says
"Goedenacht" (used as a farewell, not a welcome, in Dutch).
24 lines
791 B
TypeScript
24 lines
791 B
TypeScript
import { useEffect, useState } from "react";
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import { getGreetingPeriod, type GreetingPeriod } from "./greeting";
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// Checked frequently enough that a period rollover (e.g. 11:59 -> 12:00) is picked up
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// within the Dashboard while the app stays open, without a page reload -- see section 9
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// of the Fleet Ops final localization brief.
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const CHECK_INTERVAL_MS = 30_000;
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export function useGreetingPeriod(): GreetingPeriod {
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const [period, setPeriod] = useState<GreetingPeriod>(() => getGreetingPeriod());
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useEffect(() => {
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const id = setInterval(() => {
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setPeriod((current) => {
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const next = getGreetingPeriod();
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return next === current ? current : next;
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});
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}, CHECK_INTERVAL_MS);
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return () => clearInterval(id);
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}, []);
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return period;
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}
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