96 lines
2.7 KiB
TypeScript
96 lines
2.7 KiB
TypeScript
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import { SeasonTheme } from './types';
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/**
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* Single source of truth for when each seasonal theme auto-activates.
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*
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* Both `getActiveSeason` (the runtime "Auto" selector) and the settings UI read
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* this list, so the date windows shown to the user can never drift from the
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* dates actually used. Order matters: it is the activation PRIORITY — the first
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* entry whose window matches wins (e.g. Deep Space outranks Autumn in their
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* early-October overlap).
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*/
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export type SeasonScheduleEntry = {
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theme: SeasonTheme;
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/** Human-readable activation window for display in settings. */
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dateRange: string;
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/** Whether this theme is active on the given month (1-12) and day (1-31). */
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matches: (month: number, day: number) => boolean;
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};
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export const SEASON_SCHEDULE: SeasonScheduleEntry[] = [
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{
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theme: 'newyear',
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dateRange: 'Dec 31 – Jan 2',
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matches: (m, d) => (m === 12 && d === 31) || (m === 1 && d <= 2),
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},
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{
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theme: 'valentines',
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dateRange: 'Feb 10 – 15',
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matches: (m, d) => m === 2 && d >= 10 && d <= 15,
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},
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{
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theme: 'stpatricks',
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dateRange: 'Mar 15 – 18',
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matches: (m, d) => m === 3 && d >= 15 && d <= 18,
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},
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{
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theme: 'aprilfools',
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dateRange: 'Apr 1',
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matches: (m, d) => m === 4 && d === 1,
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},
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{
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theme: 'earthday',
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dateRange: 'Apr 20 – 23',
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matches: (m, d) => m === 4 && d >= 20 && d <= 23,
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},
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{
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theme: 'lunar',
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dateRange: 'Jan 22 – Feb 5',
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matches: (m, d) => (m === 1 && d >= 22) || (m === 2 && d <= 5),
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},
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{
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theme: 'arcade',
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dateRange: 'Sep 12',
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matches: (m, d) => m === 9 && d === 12,
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},
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{
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theme: 'deepspace',
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dateRange: 'Oct 4 – 10',
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matches: (m, d) => m === 10 && d >= 4 && d <= 10,
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},
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{
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theme: 'halloween',
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dateRange: 'Oct 15 – Nov 1',
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matches: (m, d) => (m === 10 && d >= 15) || (m === 11 && d === 1),
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},
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{
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theme: 'christmas',
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dateRange: 'Dec 10 – 30',
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matches: (m, d) => m === 12 && d >= 10,
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},
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{
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theme: 'autumn',
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dateRange: 'Sep 21 – Oct 14',
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matches: (m, d) => (m === 9 && d >= 21) || (m === 10 && d <= 14),
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},
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];
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/** Map of theme → human-readable activation window (for settings captions). */
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export const SEASON_DATE_RANGES: Record<SeasonTheme, string> = SEASON_SCHEDULE.reduce(
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(acc, entry) => {
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acc[entry.theme] = entry.dateRange;
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return acc;
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},
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{} as Record<SeasonTheme, string>,
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);
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/**
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* The seasonal theme that should be active on `now`, or null if none. First
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* matching entry in SEASON_SCHEDULE priority order wins.
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*/
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export function getActiveSeason(now: Date): SeasonTheme | null {
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const month = now.getMonth() + 1; // 1-12
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const day = now.getDate();
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return SEASON_SCHEDULE.find((entry) => entry.matches(month, day))?.theme ?? null;
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}
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