@churchapps/helpers/dist/EventHelper.js

Library of helper functions not specific to any one ChurchApps project or framework.

// Lazy initialization to handle both bundlers and Node.js ESM
let RRule = null;
let initPromise = null;
const ensureRRule = () => {
    if (RRule)
        return Promise.resolve();
    if (!initPromise) {
        initPromise = import("rrule").then((mod) => {
            RRule = mod.RRule ?? mod.default?.RRule ?? mod;
        });
    }
    return initPromise;
};
// Synchronous getter for RRule - throws if not initialized
const getRRule = () => {
    if (!RRule) {
        throw new Error("EventHelper: RRule not initialized. Ensure ensureRRule() is called first.");
    }
    return RRule;
};
// Initialize on first use for bundlers (they process the dynamic import statically)
// The promise is created immediately to start loading
initPromise = import("rrule").then((mod) => {
    RRule = mod.RRule ?? mod.default?.RRule ?? mod;
}).catch(() => {
    // rrule not available - EventHelper methods will fail gracefully
});
export class EventHelper {
    static getRange = (event, startDate, endDate) => {
        const start = new Date(event.start);
        const rrule = EventHelper.getFullRRule(event);
        const dates = rrule.between(startDate, endDate);
        // RRule returns UTC dates. Use UTC components to get the intended calendar date,
        // then construct a local Date with the event's original time.
        return dates.map((d) => new Date(d.getUTCFullYear(), d.getUTCMonth(), d.getUTCDate(), start.getHours(), start.getMinutes(), start.getSeconds()));
    };
    static getFullRRule = (event) => {
        const RR = getRRule();
        const rrule = RR.fromString(event.recurrenceRule);
        rrule.options.dtstart = new Date(event.start);
        return rrule;
    };
    static removeExcludeDates = (events) => {
        for (let i = events.length - 1; i >= 0; i--) {
            if (events[i].exceptionDates?.length > 0) {
                const parsedDates = events[i].exceptionDates.map((d) => new Date(d).toISOString());
                if (parsedDates.indexOf(events[i].start.toISOString()) > -1)
                    events.splice(i, 1);
            }
        }
    };
    static getPartialRRuleString = (options) => {
        const RR = getRRule();
        const parts = new RR(options).toString().split("RRULE:");
        const result = parts.length === 2 ? parts[1] : "";
        return result;
    };
    static cleanRule = (options) => {
        options.byhour = undefined;
        options.byminute = undefined;
        options.bysecond = undefined;
    };
    // Export for consumers who need to ensure initialization
    static ensureInitialized = ensureRRule;
}
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