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Adds calendar/octaves.ts: a lookback over the past week collecting every
octave (sanctoral or temporal) still active on a date, stacking multiple
at once (Christmas + St. Stephen + St. John + Holy Innocents all
commemorated together within the Christmas Octave). Declared via an
optional `octave` field on a saint's own record or a new small
TemporalFeastRecord (calendar/temporal-feasts.ts) for temporal ids like
Christmas/Pentecost that didn't have a metadata record before -- data-
driven per user design discussion, with `{ enabled: true }` alone using
sensible defaults (8 days, semiduplex threshold) so a minimal declaration
works without authored content.
Wired into resolveDay as a post-processing layer: doesn't change how a
single day's own precedence contest is decided, just adds commemorations
for active octaves and occasionally overrides the winner when the
occurring saint doesn't clear the strictest active octave's threshold.
Populated so far: St. Lawrence's own octave (the one that repeatedly cost
real saints their spot in August), the three Comites Christi octaves
(Stephen/John/Innocents -- Thomas of Canterbury deliberately excluded,
per discussion), and Pentecost's (duplex threshold, user-specified).
Pentecost's octave offsets are also removed from temporal-categories.yml's
privileged-feria-major classification, letting a real candidate reach the
new octave layer instead of being transferred away first -- with the
side effect that Pentecost's own Ember Saturday no longer forces a
transfer (a sub-threshold saint is now commemorated in place instead, see
tests/calendar/transfer.test.ts's updated case). Assumption, Nativity
BVM, Immaculate Conception, and All Saints' own octaves are not yet
populated with octave data -- deliberately deferred to a follow-up pass.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
52 lines
1.9 KiB
TypeScript
52 lines
1.9 KiB
TypeScript
// The temporal-cycle sibling of calendar/feasts.ts's SaintRecord: a small
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// metadata record for a *temporal* id (Christmas, Pentecost, ...) that
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// needs to carry something beyond its collect text — so far, just whether
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// it has an octave (calendar/types.ts's OctaveConfig). Most temporal ids
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// don't need a record at all (they're just collect-text lookups via
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// propers/index.ts's getTemporalProper); this only exists for the ones
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// that do.
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import type { OctaveConfig } from './types';
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import { easterOffsetOf } from './temporal';
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export interface TemporalFeastRecord {
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id: string;
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name: string;
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octave?: OctaveConfig;
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}
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const temporalFeastModules = import.meta.glob<{ default: TemporalFeastRecord }>(
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'../data/calendar/temporal-feasts/*.yml',
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{ eager: true },
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);
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const temporalFeastsById = new Map<string, TemporalFeastRecord>();
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for (const mod of Object.values(temporalFeastModules)) {
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temporalFeastsById.set(mod.default.id, mod.default);
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}
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export function getTemporalFeastRecord(id: string): TemporalFeastRecord | undefined {
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return temporalFeastsById.get(id);
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}
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/** Fixed-calendar-date starts (MM-DD -> temporal feast id). Only Christmas
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* so far; Epiphany/Candlemas would join here if they ever needed an
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* octave modeled too. */
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const FIXED_DATE_STARTS: [string, string][] = [['12-25', 'christmas-day']];
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/** Easter-offset starts (offset -> temporal feast id). */
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const EASTER_OFFSET_STARTS: [number, string][] = [[49, 'pentecost-sunday']];
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/** Which temporal feast(s), if any, have their own (day-1) octave start on this date. */
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export function temporalFeastIdsStartingOn(isoDate: string): string[] {
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const monthDay = isoDate.slice(5);
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const ids: string[] = [];
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for (const [md, id] of FIXED_DATE_STARTS) {
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if (md === monthDay) ids.push(id);
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}
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const offset = easterOffsetOf(isoDate);
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for (const [off, id] of EASTER_OFFSET_STARTS) {
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if (off === offset) ids.push(id);
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}
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return ids;
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}
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