import { type LanguageId } from '../data/languages/languages.zod';
import { TranslationsApp } from '../data/translationsApp/translationsApp.zod';
import type { AppTranslations, LanguageInfo, MeetTranslations } from '../types/languages';
import { DbsInfo, EnrichedSection, Lesson, LessonInfo, SetInfo, VideoInfo, type Section } from '../types/sets';
export declare function getSetInfo({ setId, languageId, setIds, t, }: {
    setId: string;
    languageId: LanguageId;
    t: MeetTranslations & TranslationsApp[string];
    setIds: string[];
}): SetInfo | undefined;
/** Assembles all of the audio sections for a lesson. */
export declare function assembleLessonSections({ languageInfo, setInfo, lesson, t, useSpokenQuestions, }: {
    languageInfo: LanguageInfo;
    setInfo: SetInfo;
    lesson: Lesson;
    t: MeetTranslations & AppTranslations;
    useSpokenQuestions: boolean | undefined;
}): {
    sections: Section[];
    fellowshipDuration: number;
    applicationDuration: number;
};
export declare function getLessonInfo({ lessonId, languageInfo, setInfo, t, useSpokenQuestions, }: {
    lessonId: Lesson['lessonId'] | undefined;
    languageInfo: LanguageInfo;
    setInfo?: SetInfo;
    t: MeetTranslations & TranslationsApp[string];
    useSpokenQuestions?: boolean;
}): LessonInfo | undefined;
/** Determines whether a lesson should be visible in Waha. */
export declare function shouldShowLesson(lessonInfo: LessonInfo | undefined): boolean;
/**
 * Validates that the computed lesson duration (from section lengths) matches
 * the actual audio file duration. Sections must be enriched (all have `length`)
 * via {@link enrichSections} before calling this.
 *
 * @returns The difference between the computed length and the total duration.
 */
export declare function getExpectedLessonDuration({ enrichedSections, lessonInfo, }: {
    enrichedSections: EnrichedSection[];
    lessonInfo: DbsInfo | VideoInfo;
}): number;