/**
 * The venues view's pure presentation fold: conference-card filtering
 * (text/rank/field/window), the watched-first ordering, countdown formatting,
 * and the CCF-A journal directory's own text/field filter. DOM-free so the
 * fold is unit-testable; the wire types come from the host's
 * `listVenueDeadlines` result.
 * @module dsh-client-ui-mimir/client/venues-view
 */
import type { VenueDeadlineView, VenueJournalView } from 'dsh-mimir/types';
/** The conferences/journals toggle of the venues view. */
export type VenueMode = 'conferences' | 'journals';
/** One active filter set of the conference list. */
export interface VenueFilter {
    /** Free text matched case-insensitively against title, full name, dblp key. */
    readonly query: string;
    /** Keep only one CCF rank; null passes every rank. */
    readonly rank: 'A' | 'B' | 'C' | null;
    /** Keep only one ccfddl field code (exact, case-insensitive); null passes all. */
    readonly sub: string | null;
    /** Keep only editions whose next deadline lands within this many days; null passes all. */
    readonly withinDays: number | null;
}
/** The blank filter (everything passes). */
export declare const EMPTY_VENUE_FILTER: VenueFilter;
/**
 * Calendar days from `nowMs` to one ISO instant, in the host's local zone,
 * so a deadline later today is 0 — the same rule the host's `daysUntil`
 * applies to `withinDays`, so the card countdown and the server filter never
 * disagree. (`Math.ceil` on the raw gap said "1 day left" for a deadline
 * five minutes away.)
 */
export declare function venueDaysLeft(iso: string, nowMs: number): number;
/**
 * Countdown urgency of one deadline: `soon` inside 30 days (the highlighted
 * card state), `past`/null for everything else.
 */
export declare function venueCountdownState(daysLeft: number): 'soon' | null;
/**
 * Filter and order the conference list. The ordering is watched-first, then
 * next-deadline ascending, deadline-less (fully past) editions last, ties by
 * title — the answer to "what closes next that I care about".
 * @param venues - the catalog as the host served it.
 * @param watched - series keys the selected project watches.
 * @param filter - the active narrowing fields.
 * @param nowMs - the reference instant (injectable for tests).
 * @returns the visible cards in display order.
 */
export declare function filterVenues(venues: readonly VenueDeadlineView[], watched: readonly string[], filter: VenueFilter, nowMs: number): VenueDeadlineView[];
/** The distinct field codes present in the served catalog, sorted (the filter dropdown). */
export declare function venueFilterSubs(venues: readonly VenueDeadlineView[]): string[];
/**
 * Count the catalog's deadlines landing inside `withinDays` days — the
 * overview's "upcoming DDL" stat chip.
 */
export declare function countUpcomingDeadlines(venues: readonly VenueDeadlineView[], withinDays: number, nowMs: number): number;
/**
 * Filter the static journal directory by free text (title and full name)
 * and/or one field label; a null selector passes everything on its axis.
 */
export declare function filterJournals(journals: readonly VenueJournalView[], query: string, sub: string | null): VenueJournalView[];
/** The distinct field labels of the journal directory, in first-appearance order. */
export declare function journalSubs(journals: readonly VenueJournalView[]): string[];
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