import { session } from '$lib/stores/session.svelte';
import { apiRequest, type RequestOptions } from './client';
import type { MatchStatsDTO } from './schema-helpers';

/** StatisticsController is `[Authorize]`, like the tournament endpoints. */
function authed(options: RequestOptions): RequestOptions {
	return { ...options, token: options.token ?? session.token };
}

/**
 * POST /api/Statistics/Matches — set-level statistics (win/loss, games, head to
 * head) for the given events, read from the `set` rows an import persisted.
 *
 * Unlike `GetResults` this takes every event in one call: the service tolerates
 * brackets with no set rows instead of throwing, and reports what it could see in
 * `coverage`. Always show that coverage — many older brackets were imported
 * without sets, so a low `bracketsWithSets` means these numbers describe only a
 * slice of the scope.
 */
export function getMatchStats(
	eventIds: number[],
	options: RequestOptions = {}
): Promise<MatchStatsDTO> {
	return apiRequest<MatchStatsDTO>('/api/Statistics/Matches', {
		...authed(options),
		method: 'POST',
		body: eventIds
	});
}