import { api, apiFetchBlob } from '../../api/client';
import type { Page } from '../../api/types';
import type {
	ExportFormat,
	QualityCause,
	QualityCell,
	QualityCellDocumentOut,
	QualityFilters,
	QualityMatrixOut,
	QualityMonthlySeriesOut,
} from '../../types/qualityMetrics';

const BASE = '/quality-metrics';

export function getMatrix(filters: QualityFilters): Promise<QualityMatrixOut> {
	return api.get<QualityMatrixOut>(`${BASE}/matrix`, filters);
}

export function getSeries(filters: QualityFilters, cause: QualityCause): Promise<QualityMonthlySeriesOut> {
	return api.get<QualityMonthlySeriesOut>(`${BASE}/series`, { ...filters, cause });
}

export function getCellDocuments(
	filters: QualityFilters,
	cell: QualityCell,
	paging: { limit: number; offset: number },
): Promise<Page<QualityCellDocumentOut>> {
	return api.get<Page<QualityCellDocumentOut>>(`${BASE}/cells/${cell}/documents`, { ...filters, ...paging });
}

/** Выгрузка фактов за период; скачивание идёт через fetch, потому что нужен заголовок Authorization. */
export function exportFacts(filters: QualityFilters, format: ExportFormat): Promise<{ blob: Blob; filename: string | null }> {
	return apiFetchBlob(`${BASE}/export${queryString({ ...filters, format })}`);
}

/** Строка запроса для выгрузки (пустые поля пропускаются) — вынесено отдельно ради теста. */
export function queryString(params: object): string {
	const search = new URLSearchParams();
	for (const [key, value] of Object.entries(params)) {
		if (value === undefined || value === null || value === '') continue;
		search.append(key, String(value));
	}
	const qs = search.toString();
	return qs ? `?${qs}` : '';
}