import { enrichPagesWithAchievementStats } from './mindspace-page-achievement-stats.mjs';

export const DEFAULT_ACHIEVEMENT_LIMIT = 20;

export function parseAchievementQuery(query = {}) {
  const limit = Number.parseInt(String(query.limit ?? ''), 10);
  const offset = Number.parseInt(String(query.offset ?? ''), 10);
  const includeStatsRaw = String(query.include_stats ?? '0').trim().toLowerCase();
  const includeStats = includeStatsRaw === '1' || includeStatsRaw === 'true';

  return {
    status: typeof query.status === 'string' ? query.status : undefined,
    categoryCode: typeof query.category_code === 'string' ? query.category_code : undefined,
    limit: Number.isFinite(limit) ? Math.min(Math.max(limit, 1), 100) : DEFAULT_ACHIEVEMENT_LIMIT,
    offset: Number.isFinite(offset) ? Math.max(offset, 0) : 0,
    includeStats,
  };
}

export async function listAchievementPagesForUser({
  pages,
  userId,
  query = {},
  pool = null,
  logger = console,
} = {}) {
  if (!pages || typeof pages.listPages !== 'function') {
    throw new Error('MindSpace page service unavailable');
  }

  const parsed = parseAchievementQuery(query);
  const result = await pages.listPages(userId, {
    status: parsed.status,
    categoryCode: parsed.categoryCode,
    limit: parsed.limit,
    offset: parsed.offset,
  });

  const items = await enrichPagesWithAchievementStats(result.items, {
    ownerUserId: userId,
    pool,
    logger,
    skipUmami: !parsed.includeStats,
  });

  return {
    items,
    total: result.total,
    limit: result.limit,
    offset: result.offset,
    hasMore: Boolean(result.hasMore ?? result.offset + result.items.length < result.total),
  };
}