'use server';

import { auth } from '@/lib/auth';
import { SESSIONS_PAGE_SIZE } from '@/lib/types';
import { withWorkshopType } from '@/lib/workshops';
import { getSessionsByUserId } from '@/services/sessions';
import { getMotivatorSessionsByUserId } from '@/services/moving-motivators';
import { getYearReviewSessionsByUserId } from '@/services/year-review';
import { getWeeklyCheckInSessionsByUserId } from '@/services/weekly-checkin';
import { getWeatherSessionsByUserId } from '@/services/weather';
import { getGifMoodSessionsByUserId } from '@/services/gif-mood';
import type { WorkshopTypeId } from '@/lib/workshops';

export async function loadMoreSessions(type: WorkshopTypeId, offset: number) {
  const session = await auth();
  if (!session?.user?.id) return null;

  const userId = session.user.id;
  const limit = SESSIONS_PAGE_SIZE;

  switch (type) {
    case 'swot': {
      const all = await getSessionsByUserId(userId);
      return { items: withWorkshopType(all.slice(offset, offset + limit), 'swot'), total: all.length };
    }
    case 'motivators': {
      const all = await getMotivatorSessionsByUserId(userId);
      return { items: withWorkshopType(all.slice(offset, offset + limit), 'motivators'), total: all.length };
    }
    case 'year-review': {
      const all = await getYearReviewSessionsByUserId(userId);
      return { items: withWorkshopType(all.slice(offset, offset + limit), 'year-review'), total: all.length };
    }
    case 'weekly-checkin': {
      const all = await getWeeklyCheckInSessionsByUserId(userId);
      return { items: withWorkshopType(all.slice(offset, offset + limit), 'weekly-checkin'), total: all.length };
    }
    case 'weather': {
      const all = await getWeatherSessionsByUserId(userId);
      return { items: withWorkshopType(all.slice(offset, offset + limit), 'weather'), total: all.length };
    }
    case 'gif-mood': {
      const all = await getGifMoodSessionsByUserId(userId);
      return { items: withWorkshopType(all.slice(offset, offset + limit), 'gif-mood'), total: all.length };
    }
    default:
      return null;
  }
}