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* @module Statskontoret/Client
* @description TypeScript client for Statskontoret public open-data pages.
*
* Covers the Statskontoret datasets that complement IMF, SCB and World Bank
* context for Riksdagsmonitor: the authority register (myndighetsförteckning),
* budget time series, annual budget outturn and monthly budget outturn. Data is
* public and unauthenticated. Excel workbooks and CSV ZIP archives are parsed
* locally so workflows can persist source data and derived headcount series.
*
* @author Hack23 AB
* @license Apache-2.0
*/
import JSZip from 'jszip';
import { decodeHtmlEntities } from './html-utils.js';
export type StatskontoretSourceKey =
| 'myndighetsforteckning'
| 'budget-time-series'
| 'arsutfall'
| 'manadsutfall';
export type StatskontoretResourceType = 'excel' | 'csv-zip' | 'zip' | 'document' | 'unknown';
export interface StatskontoretSourceDefinition {
readonly key: StatskontoretSourceKey;
readonly title: string;
readonly url: string;
readonly cadence: string;
readonly coverage: string;
readonly primaryUse: string;
}
export interface StatskontoretDownloadLink {
readonly source: StatskontoretSourceKey;
readonly sourcePage: string;
readonly href: string;
readonly url: string;
readonly text: string;
readonly resourceType: StatskontoretResourceType;
readonly documentType?: string;
readonly fileType?: string;
readonly fileName?: string;
readonly year?: number;
readonly month?: number;
readonly status?: string;
readonly updatedAt?: string;
}
export interface StatskontoretClientConfig {
readonly baseURL?: string;
readonly timeout?: number;
readonly fetchFn?: typeof fetch;
}
export interface StatskontoretWorkbook {
readonly sheets: readonly StatskontoretSheet[];
}
export interface StatskontoretSheet {
readonly name: string;
readonly rows: readonly (readonly string[])[];
}
export interface StatskontoretHeadcountRow {
readonly year: number;
readonly department: string;
readonly headcount: number;
readonly authorityCount: number;
}
export interface StatskontoretHeadcountOptions {
readonly sheetNamePattern?: RegExp;
readonly fallbackYear?: number;
}
/**
* A single budget-outturn row derived from an årsutfall, månadsutfall or
* budget-time-series workbook. Amounts are in MSEK (millions of Swedish
* kronor) as published by Statskontoret.
*/
export interface StatskontoretBudgetRow {
readonly year: number;
/** Present only for månadsutfall (1–12). */
readonly month?: number;
/** 'Inkomst' | 'Utgift' or the raw documentType string from the download. */
readonly documentType: string;
/** Human-readable title: income title name or appropriation/expenditure-area name. */
readonly title: string;
/** Numeric code of the income title or appropriation, when present. */
readonly code?: string;
/** Outturn amount in MSEK. */
readonly outturn: number;
/** Budget amount in MSEK; may be absent in older series. */
readonly budget?: number;
/** Agency or authority name, when present (finest granularity). */
readonly agency?: string;
/** Preliminary / definitive / forecast status label. */
readonly status?: string;
}
export interface StatskontoretBudgetOptions {
/** Override the documentType label (e.g. when fetching a single-type workbook). */
readonly documentType?: string;
/** Hint for the year when the workbook has no year column (e.g. a single-year file). */
readonly fallbackYear?: number;
/** Hint for the month when the workbook has no month column. */
readonly fallbackMonth?: number;
}
/**
* Aggregated totals derived from one or more `StatskontoretBudgetRow` rows.
*
* `totalOutturn` and `totalBudget` are the sums of the individual row amounts
* (in MSEK) within the selected grouping. `variance` is `totalOutturn -
* totalBudget`; it is `undefined` when any contributing row had no budget
* figure. `rowCount` records how many source rows were included.
*/
export interface StatskontoretBudgetSummary {
readonly year: number;
readonly documentType: string;
readonly totalOutturn: number;
readonly totalBudget?: number;
readonly variance?: number;
readonly rowCount: number;
}
/**
* Typed error thrown by the Statskontoret client and parsers.
*
* `kind` lets callers distinguish transport, parsing and contract failures
* without brittle message matching.
*/
export class StatskontoretError extends Error {
readonly kind: 'http' | 'workbook' | 'contract' | 'cli';
constructor(message: string, kind: StatskontoretError['kind'] = 'contract', options?: ErrorOptions) {
super(message, options);
this.name = 'StatskontoretError';
this.kind = kind;
}
}
export const STATSKONTORET_BASE_URL = 'https://www.statskontoret.se';
export const STATSKONTORET_SOURCES: readonly StatskontoretSourceDefinition[] = Object.freeze([
{
key: 'myndighetsforteckning',
title: 'Myndighetsförteckning – öppna data',
url: '/analys-och-statistik/oppna-data/myndighetsforteckning/',
cadence: 'Annual snapshot; Statskontoret page metadata currently indicates 2026-02-06 update for the 2025 workbook.',
coverage: 'Summary statistics, 2007–2025 time series, latest authority list and full 2007–2025 authority register.',
primaryUse: 'Government-body headcount, authority count, leadership form and department grouping over time.',
},
{
key: 'budget-time-series',
title: 'Tidsserier, statens budget m.m.',
url: '/analys-och-statistik/officiell-statistik/tidsserier-statens-budget-m.m',
cadence: 'Annual official statistics release.',
coverage: 'Final outcomes for central-government revenue, expenditure, balance and related public-finance tables, generally from 1995.',
primaryUse: 'Long-run fiscal context for committee and budget-cycle analysis.',
},
{
key: 'arsutfall',
title: 'Årsutfall för statens budget – öppna data',
url: '/analys-och-statistik/oppna-data/arsutfall/',
cadence: 'Annual, with preliminary and definitive releases.',
coverage: 'Annual central-government revenue and expenditure outturns based on Hermes reporting and Riksdag/government budget decisions.',
primaryUse: 'Yearly budget execution context by appropriation, income title and agency.',
},
{
key: 'manadsutfall',
title: 'Månadsutfall för statens budget – öppna data',
url: '/analys-och-statistik/oppna-data/manadsutfall/',
cadence: 'Monthly.',
coverage: 'Monthly central-government revenue and expenditure outcomes from January 2006 onward at low-level agency/account granularity.',
primaryUse: 'High-frequency budget execution context and agency-level fiscal monitoring.',
},
]);
const DEFAULT_TIMEOUT = 15_000;
const FILE_EXTENSION_RE = /\.(xlsx|xls|csv|zip|docx|pdf)(?:$|[?#])/i;
const HREF_RE = /<a\b[^>]*href=["']([^"']+)["'][^>]*>([\s\S]*?)<\/a>/gi;
const TAG_RE = /<[^>]+>/g;
export class StatskontoretClient {
readonly baseURL: string;
readonly timeout: number;
private readonly fetchFn: typeof fetch;
constructor(config: StatskontoretClientConfig = {}) {
this.baseURL = trimTrailingSlash(config.baseURL ?? STATSKONTORET_BASE_URL);
this.timeout = config.timeout ?? DEFAULT_TIMEOUT;
this.fetchFn = config.fetchFn ?? fetch;
}
async discoverDownloads(sourceKey: StatskontoretSourceKey): Promise<StatskontoretDownloadLink[]> {
const source = getStatskontoretSource(sourceKey);
const pageUrl = resolveStatskontoretUrl(source.url, this.baseURL);
const html = await this.fetchText(pageUrl);
return extractStatskontoretDownloadLinks(html, sourceKey, pageUrl, this.baseURL);
}
async fetchWorkbook(url: string): Promise<StatskontoretWorkbook> {
const buffer = await this.fetchArrayBuffer(url);
return parseStatskontoretXlsx(buffer);
}
async fetchCsvZip(url: string): Promise<Record<string, string>> {
const buffer = await this.fetchArrayBuffer(url);
return parseStatskontoretCsvZip(buffer);
}
async fetchText(url: string): Promise<string> {
const response = await this.fetchWithTimeout(url);
return response.text();
}
async fetchArrayBuffer(url: string): Promise<ArrayBuffer> {
const response = await this.fetchWithTimeout(url);
return response.arrayBuffer();
}
private async fetchWithTimeout(url: string): Promise<Response> {
const resolved = resolveStatskontoretUrl(url, this.baseURL);
assertStatskontoretFetchTarget(resolved, this.baseURL);
const controller = new AbortController();
const timeoutId = setTimeout(() => controller.abort(), this.timeout);
let response: Response;
try {
response = await this.fetchFn(resolved, {
signal: controller.signal,
headers: {
Accept: 'text/html,application/vnd.openxmlformats-officedocument.spreadsheetml.sheet,application/zip,text/csv,*/*',
},
});
} catch (error) {
const detail = error instanceof Error ? error.message : String(error);
throw new StatskontoretError(`Statskontoret fetch failed for ${resolved}: ${detail}`, 'http', { cause: error });
} finally {
clearTimeout(timeoutId);
}
if (!response.ok) {
throw new StatskontoretError(`Statskontoret API error: ${response.status} ${response.statusText} for ${response.url}`, 'http');
}
return response;
}
}
export function getStatskontoretSource(key: StatskontoretSourceKey): StatskontoretSourceDefinition {
const source = STATSKONTORET_SOURCES.find((candidate) => candidate.key === key);
if (!source) throw new StatskontoretError(`Unknown Statskontoret source: ${key}`);
return source;
}
export function extractStatskontoretDownloadLinks(
html: string,
source: StatskontoretSourceKey,
sourcePage: string,
baseURL: string = STATSKONTORET_BASE_URL,
): StatskontoretDownloadLink[] {
const links: StatskontoretDownloadLink[] = [];
const pageUpdatedAt = extractPageLastModified(html);
for (const match of html.matchAll(HREF_RE)) {
const href = decodeHtml(match[1] ?? '').trim();
const text = normalizeWhitespace(decodeHtml((match[2] ?? '').replace(TAG_RE, ' ')));
Iif (!href) continue;
const resourceType = classifyStatskontoretResource(href, text);
Iif (resourceType === 'unknown') continue;
const url = resolveStatskontoretUrl(href, baseURL);
const parsed = new URL(url);
const year = parseStatskontoretOptionalInt(parsed.searchParams.get('Year'));
const month = parseStatskontoretOptionalInt(parsed.searchParams.get('month'));
links.push({
source,
sourcePage,
href,
url,
text,
resourceType,
...(parsed.searchParams.get('documentType') ? { documentType: parsed.searchParams.get('documentType') ?? undefined } : {}),
...(parsed.searchParams.get('fileType') ? { fileType: parsed.searchParams.get('fileType') ?? undefined } : {}),
...(parsed.searchParams.get('fileName') ? { fileName: parsed.searchParams.get('fileName') ?? undefined } : {}),
...(year !== undefined ? { year } : {}),
...(month !== undefined ? { month } : {}),
...(parsed.searchParams.get('status') ? { status: parsed.searchParams.get('status') ?? undefined } : {}),
...(pageUpdatedAt ? { updatedAt: pageUpdatedAt } : {}),
});
}
return deduplicateLinks(links);
}
export async function parseStatskontoretXlsx(input: ArrayBuffer | Uint8Array): Promise<StatskontoretWorkbook> {
const zip = await JSZip.loadAsync(input);
const workbookXml = await readZipText(zip, 'xl/workbook.xml');
const workbookRelsXml = await readZipText(zip, 'xl/_rels/workbook.xml.rels');
const sharedStringsXml = zip.file('xl/sharedStrings.xml')
? await readZipText(zip, 'xl/sharedStrings.xml')
: '';
const sharedStrings = parseSharedStrings(sharedStringsXml);
const rels = parseWorkbookRelationships(workbookRelsXml);
const sheets: StatskontoretSheet[] = [];
for (const sheet of parseWorkbookSheets(workbookXml)) {
const target = rels.get(sheet.relationshipId);
Iif (!target) continue;
const sheetPath = target.startsWith('/') ? target.slice(1) : `xl/${target}`;
const sheetXml = await readZipText(zip, sheetPath.replace(/\/\.\//g, '/'));
sheets.push({ name: sheet.name, rows: parseWorksheetRows(sheetXml, sharedStrings) });
}
return { sheets };
}
export async function parseStatskontoretCsvZip(input: ArrayBuffer | Uint8Array): Promise<Record<string, string>> {
const zip = await JSZip.loadAsync(input);
const out: Record<string, string> = {};
for (const [name, entry] of Object.entries(zip.files)) {
Iif (entry.dir) continue;
if (!/\.csv$/i.test(name)) continue;
out[name] = await entry.async('string');
}
return out;
}
export function rowsToRecords(rows: readonly (readonly string[])[], headerRowIndex?: number): Record<string, string>[] {
const resolvedHeaderIndex = headerRowIndex ?? findLikelyHeaderRow(rows);
if (resolvedHeaderIndex < 0) return [];
const headers = rows[resolvedHeaderIndex].map((header, index) => header.trim() || `column_${index + 1}`);
const records: Record<string, string>[] = [];
for (const row of rows.slice(resolvedHeaderIndex + 1)) {
const record: Record<string, string> = {};
let hasValue = false;
for (let i = 0; i < headers.length; i++) {
const value = row[i]?.trim() ?? '';
Eif (value) hasValue = true;
record[headers[i]] = value;
}
Eif (hasValue) records.push(record);
}
return records;
}
export function aggregateHeadcountByDepartment(
records: readonly Record<string, string>[],
fallbackYear?: number,
): StatskontoretHeadcountRow[] {
const aggregate = new Map<string, { headcount: number; authorities: Set<string> }>();
for (const record of records) {
const lookup = buildRecordLookup(record);
const year = parseStatskontoretOptionalInt(findField(lookup, ['år', 'ar', 'year']) ?? '') ?? fallbackYear;
const department = findField(lookup, ['departement', 'departementstillhörighet', 'departementstillhorighet'])?.trim();
const headcountValue = parseStatskontoretSwedishNumber(findField(lookup, ['årsarbetskrafter', 'arsarbetskrafter', 'åa', 'aa']) ?? '');
Iif (!year || !department || headcountValue === undefined) continue;
const authority = findField(lookup, ['myndighet', 'myndighetsnamn', 'namn'])?.trim() ?? '';
const key = `${year}::${department}`;
const current = aggregate.get(key) ?? { headcount: 0, authorities: new Set<string>() };
current.headcount += headcountValue;
Eif (authority) current.authorities.add(authority);
aggregate.set(key, current);
}
return [...aggregate.entries()]
.map(([key, value]) => {
const [yearRaw, department] = key.split('::');
return {
year: Number.parseInt(yearRaw, 10),
department,
headcount: roundOneDecimal(value.headcount),
authorityCount: value.authorities.size,
};
})
.sort((a, b) => a.year - b.year || a.department.localeCompare(b.department, 'sv'));
}
export function buildHeadcountTimeSeries(
workbook: StatskontoretWorkbook,
options: StatskontoretHeadcountOptions = {},
): StatskontoretHeadcountRow[] {
const sheet = options.sheetNamePattern
? workbook.sheets.find((candidate) => options.sheetNamePattern?.test(candidate.name))
: workbook.sheets.find((candidate) => /förteckning|forteckning/i.test(candidate.name)) ?? workbook.sheets[0];
if (!sheet) return [];
return aggregateHeadcountByDepartment(rowsToRecords(sheet.rows), options.fallbackYear);
}
/**
* Parse budget-outturn records into typed `StatskontoretBudgetRow` rows.
*
* Covers both `arsutfall` (annual, no month) and `manadsutfall` (monthly) as
* well as the `budget-time-series` XLSX series. Field names are normalised so
* Swedish characters and capitalisation differences are tolerated.
*/
export function parseBudgetRows(
records: readonly Record<string, string>[],
options: StatskontoretBudgetOptions = {},
): StatskontoretBudgetRow[] {
const rows: StatskontoretBudgetRow[] = [];
for (const record of records) {
const lookup = buildRecordLookup(record);
const yearRaw = findField(lookup, ['år', 'ar', 'year', 'kalenderår', 'kalenderar']);
const year = parseStatskontoretOptionalInt(yearRaw ?? '') ?? options.fallbackYear;
if (!year) continue;
const monthRaw = findField(lookup, ['månad', 'manad', 'month', 'månadsperiod']);
const month = parseStatskontoretOptionalInt(monthRaw ?? '') ?? options.fallbackMonth;
const docType =
options.documentType ??
findField(lookup, ['dokumenttyp', 'dokumenttype', 'typ', 'inkomst_utgift', 'inkomstutgift']) ??
'';
const title =
// 'Inkomsttitelnamn' is the descriptive name; 'Inkomsttitel' is the numeric code.
// Check the name-specific candidates first to avoid shadowing by the code field.
findField(lookup, [
'inkomsttitelnamn', 'inkomsttitelgruppsnamn',
'anslagsnamn', 'utgiftsomradesnamn', 'utgiftsomrade',
'titel', 'name', 'namn', 'rubrik',
])?.trim() ?? '';
const code = findField(lookup, [
// 'inkomsttitel' is the numeric income-title code (e.g. 1111, 1211)
'inkomsttitel', 'inkomsttitelnummer', 'inkomsttitelnr',
'anslagsnr', 'anslagsnummer', 'anslagspost',
'utgiftsomradesnr', 'kod', 'code', 'nummer',
])?.trim();
const outturnRaw = findField(lookup, [
'utfall', 'outturn', 'utfallmsek', 'utfallbelopp',
'inkomstutfall', 'utgiftsutfall', 'belopp',
]);
const outturn = parseStatskontoretSwedishNumber(outturnRaw ?? '');
if (outturn === undefined) continue;
const budgetRaw = findField(lookup, [
'budget', 'budgetvarde', 'budgetvärde', 'anvisatbelopp',
'anvisat', 'statsbidrag', 'ramanslag',
]);
const budget = parseStatskontoretSwedishNumber(budgetRaw ?? '');
const agency = findField(lookup, ['myndighet', 'myndighetsnamn', 'namn', 'authority'])?.trim();
const status = findField(lookup, ['status', 'utfallsstatus', 'preliminar', 'preliminär'])?.trim();
rows.push({
year,
...(month !== undefined ? { month } : {}),
documentType: docType,
title,
...(code ? { code } : {}),
outturn: roundOneDecimal(outturn),
...(budget !== undefined ? { budget: roundOneDecimal(budget) } : {}),
...(agency ? { agency } : {}),
...(status ? { status } : {}),
});
}
return rows;
}
/**
* Parse all sheets in a budget-outturn workbook and return a flat array of
* typed rows sorted by year ascending, then month ascending (annual rows last
* for the same year), then documentType alphabetically. For single-type workbooks
* (e.g. a file explicitly downloaded as "Inkomst"), pass
* `options.documentType` to set the label uniformly.
*/
export function buildBudgetTimeSeries(
workbook: StatskontoretWorkbook,
options: StatskontoretBudgetOptions = {},
): StatskontoretBudgetRow[] {
const rows: StatskontoretBudgetRow[] = [];
for (const sheet of workbook.sheets) {
// Derive a document-type hint from the sheet name when not forced by options
const sheetDocType = options.documentType ?? inferDocTypeFromSheetName(sheet.name);
const sheetOptions: StatskontoretBudgetOptions = {
...options,
...(sheetDocType ? { documentType: sheetDocType } : {}),
};
rows.push(...parseBudgetRows(rowsToRecords(sheet.rows), sheetOptions));
}
return rows.sort(
(a, b) =>
a.year - b.year ||
(a.month ?? Number.MAX_SAFE_INTEGER) - (b.month ?? Number.MAX_SAFE_INTEGER) ||
a.documentType.localeCompare(b.documentType, 'sv'),
);
}
/**
* Aggregate `StatskontoretBudgetRow` rows into per-year/documentType totals.
*
* Rows are grouped by `(year, documentType)`. `totalBudget` and `variance`
* are included only when every row in the group has a `budget` value.
*
* Returns results sorted by year ascending, then documentType alphabetically.
*/
export function summarizeBudgetOutturn(
rows: readonly StatskontoretBudgetRow[],
): StatskontoretBudgetSummary[] {
const groups = new Map<string, {
year: number;
documentType: string;
totalOutturn: number;
totalBudget: number;
allHaveBudget: boolean;
rowCount: number;
}>();
for (const row of rows) {
const key = `${row.year}::${row.documentType}`;
const existing = groups.get(key);
if (existing) {
existing.totalOutturn = roundOneDecimal(existing.totalOutturn + row.outturn);
if (row.budget !== undefined) {
existing.totalBudget = roundOneDecimal(existing.totalBudget + row.budget);
} else {
existing.allHaveBudget = false;
}
existing.rowCount++;
} else {
groups.set(key, {
year: row.year,
documentType: row.documentType,
totalOutturn: row.outturn,
totalBudget: row.budget ?? 0,
allHaveBudget: row.budget !== undefined,
rowCount: 1,
});
}
}
return [...groups.values()]
.map((g): StatskontoretBudgetSummary => ({
year: g.year,
documentType: g.documentType,
totalOutturn: g.totalOutturn,
...(g.allHaveBudget ? {
totalBudget: g.totalBudget,
variance: roundOneDecimal(g.totalOutturn - g.totalBudget),
} : {}),
rowCount: g.rowCount,
}))
.sort(
(a, b) => a.year - b.year || a.documentType.localeCompare(b.documentType, 'sv'),
);
}
/** Infer 'Inkomst' / 'Utgift' from common Swedish sheet-name patterns. */
function inferDocTypeFromSheetName(name: string): string | undefined {
const n = name.toLowerCase();
if (n.includes('inkomst')) return 'Inkomst';
Eif (n.includes('utgift') || n.includes('anslag')) return 'Utgift';
return undefined;
}
function parseWorkbookSheets(xml: string): Array<{ name: string; relationshipId: string }> {
const sheets: Array<{ name: string; relationshipId: string }> = [];
const sheetRe = /<sheet\b([^>]*)\/>/gi;
for (const match of xml.matchAll(sheetRe)) {
const attrs = parseXmlAttributes(match[1] ?? '');
const name = attrs.get('name');
const relationshipId = attrs.get('r:id') ?? attrs.get('id');
Eif (name && relationshipId) sheets.push({ name: decodeXml(name), relationshipId });
}
return sheets;
}
function parseWorkbookRelationships(xml: string): Map<string, string> {
const rels = new Map<string, string>();
const relRe = /<Relationship\b([^>]*)\/>/gi;
for (const match of xml.matchAll(relRe)) {
const attrs = parseXmlAttributes(match[1] ?? '');
const id = attrs.get('Id');
const target = attrs.get('Target');
Eif (id && target) rels.set(id, target);
}
return rels;
}
function parseSharedStrings(xml: string): string[] {
if (!xml) return [];
const strings: string[] = [];
const siRe = /<si\b[^>]*>([\s\S]*?)<\/si>/gi;
for (const match of xml.matchAll(siRe)) {
strings.push(extractTextNodes(match[1] ?? ''));
}
return strings;
}
function parseWorksheetRows(xml: string, sharedStrings: readonly string[]): string[][] {
const rows: string[][] = [];
const rowRe = /<row\b[^>]*>([\s\S]*?)<\/row>/gi;
for (const rowMatch of xml.matchAll(rowRe)) {
const row: string[] = [];
const cellRe = /<c\b([^>]*)>([\s\S]*?)<\/c>/gi;
for (const cellMatch of (rowMatch[1] ?? '').matchAll(cellRe)) {
const attrs = parseXmlAttributes(cellMatch[1] ?? '');
const ref = attrs.get('r') ?? '';
const cellIndex = cellRefToColumnIndex(ref) ?? row.length;
row[cellIndex] = parseCellValue(cellMatch[2] ?? '', attrs.get('t'), sharedStrings);
}
// Densify the sparse row: cells with explicit refs (e.g. C5) can leave
// holes when intermediate columns are absent; `Array.prototype.map` skips
// those holes, so downstream `rowsToRecords` would receive misaligned
// columns. Iterate every index up to the max set position to fill gaps.
rows.push(Array.from({ length: row.length }, (_, i) => row[i] ?? ''));
}
return rows;
}
function parseCellValue(xml: string, type: string | undefined, sharedStrings: readonly string[]): string {
Iif (type === 'inlineStr') return extractTextNodes(xml);
const value = firstXmlTagValue(xml, 'v');
Iif (value === undefined) return '';
if (type === 's') return sharedStrings[Number.parseInt(value, 10)] ?? '';
return decodeXml(value);
}
function findLikelyHeaderRow(rows: readonly (readonly string[])[]): number {
for (let i = 0; i < rows.length; i++) {
const normalized = rows[i].map(normalizeKey);
// Headcount (myndighetsförteckning) signals
const headcountScore = [
normalized.some((cell) => cell.includes('myndighet')),
normalized.some((cell) => cell.includes('departement')),
normalized.some((cell) => cell.includes('arsarbetskrafter') || cell === 'aa'),
normalized.some((cell) => cell === 'ar' || cell === 'year'),
].filter(Boolean).length;
if (headcountScore >= 2) return i;
// Budget-outturn (årsutfall / månadsutfall / budget-time-series) signals
const budgetScore = [
normalized.some((cell) => cell.includes('utfall') || cell.includes('outturn')),
normalized.some((cell) =>
cell.includes('inkomst') || cell.includes('utgift') || cell.includes('anslag'),
),
normalized.some((cell) => cell === 'ar' || cell.includes('kalenderar') || cell === 'year'),
normalized.some((cell) => cell.includes('budget') || cell.includes('belopp')),
].filter(Boolean).length;
Eif (budgetScore >= 2) return i;
}
return rows.findIndex((row) => row.filter((cell) => cell.trim()).length >= 2);
}
function buildRecordLookup(record: Record<string, string>): Map<string, string> {
const lookup = new Map<string, string>();
for (const [key, value] of Object.entries(record)) {
lookup.set(normalizeKey(key), value);
}
return lookup;
}
function findField(lookup: ReadonlyMap<string, string>, candidates: readonly string[]): string | undefined {
const normalizedCandidates = candidates.map(normalizeKey);
for (const candidate of normalizedCandidates) {
const exact = lookup.get(candidate);
if (exact !== undefined) return exact;
}
for (const [key, value] of lookup.entries()) {
if (normalizedCandidates.some((candidate) => key.includes(candidate))) return value;
}
return undefined;
}
export function parseStatskontoretSwedishNumber(value: string): number | undefined {
const compact = value.replace(/\s/g, '');
const normalized = compact.includes(',')
? compact.replace(/\./g, '').replace(',', '.')
: compact;
const parsed = Number.parseFloat(normalized);
return Number.isFinite(parsed) ? parsed : undefined;
}
export function parseStatskontoretOptionalInt(value: string | null): number | undefined {
if (!value) return undefined;
const parsed = Number.parseInt(value, 10);
return Number.isFinite(parsed) ? parsed : undefined;
}
export function classifyStatskontoretResource(href: string, text: string): StatskontoretResourceType {
const haystack = `${href} ${text}`.toLowerCase();
if (haystack.includes('filetype=excel') || /\.xlsx(?:$|[?#])/i.test(href) || /\bexcel\b/i.test(text)) return 'excel';
if (haystack.includes('filetype=zip') && /\bcsv\b/i.test(text)) return 'csv-zip';
Iif (/\.zip(?:$|[?#])/i.test(href)) return /\bcsv\b/i.test(text) ? 'csv-zip' : 'zip';
Iif (/\b(csv|zip)\b/i.test(text) && href.includes('GetFile')) return 'csv-zip';
if (/\.(docx|pdf)(?:$|[?#])/i.test(href)) return 'document';
Iif (FILE_EXTENSION_RE.test(href) || href.includes('GetFile')) return 'unknown';
return 'unknown';
}
function deduplicateLinks(links: readonly StatskontoretDownloadLink[]): StatskontoretDownloadLink[] {
const seen = new Set<string>();
const out: StatskontoretDownloadLink[] = [];
for (const link of links) {
if (seen.has(link.url)) continue;
seen.add(link.url);
out.push(link);
}
return out;
}
function resolveStatskontoretUrl(url: string, baseURL: string): string {
return new URL(decodeHtml(url), `${trimTrailingSlash(baseURL)}/`).toString();
}
/**
* Validate that an outbound URL targets the Statskontoret allowlisted host
* over HTTPS before issuing a fetch. Mirrors the firewall allowlist documented
* in `analysis/statskontoret/indicators-inventory.json` so absolute URLs from
* untrusted callers cannot redirect the client to arbitrary hosts.
*/
export function assertStatskontoretFetchTarget(url: string, baseURL: string = STATSKONTORET_BASE_URL): URL {
let parsed: URL;
try {
parsed = new URL(url);
} catch {
throw new StatskontoretError(`Invalid Statskontoret URL: ${url}`, 'http');
}
if (parsed.protocol !== 'https:') {
throw new StatskontoretError(`Statskontoret fetch must use https: ${url}`, 'http');
}
const allowedHost = new URL(baseURL).hostname;
if (parsed.hostname !== allowedHost) {
throw new StatskontoretError(
`Statskontoret fetch host ${parsed.hostname} not in allowlist (${allowedHost})`,
'http',
);
}
return parsed;
}
function trimTrailingSlash(value: string): string {
return value.replace(/\/+$/, '');
}
function normalizeWhitespace(value: string): string {
return value.replace(/\s+/g, ' ').trim();
}
function normalizeKey(value: string): string {
return value
.toLowerCase()
.normalize('NFD')
.replace(/[\u0300-\u036f]/g, '')
.replace(/[^a-z0-9]+/g, '');
}
function roundOneDecimal(value: number): number {
return Math.round(value * 10) / 10;
}
function cellRefToColumnIndex(ref: string): number | undefined {
const letters = ref.match(/^[A-Z]+/i)?.[0];
Iif (!letters) return undefined;
let index = 0;
for (const char of letters.toUpperCase()) {
// Excel columns are bijective base-26 labels; keep a one-based accumulator
// (A=1, Z=26, AA=27) and convert to a zero-based array index below.
index = index * 26 + (char.charCodeAt(0) - 65 + 1);
}
return index - 1;
}
function parseXmlAttributes(input: string): Map<string, string> {
const attrs = new Map<string, string>();
const attrRe = /([\w:-]+)=["']([^"']*)["']/g;
for (const match of input.matchAll(attrRe)) {
attrs.set(match[1], decodeXml(match[2] ?? ''));
}
return attrs;
}
function firstXmlTagValue(xml: string, tag: string): string | undefined {
const match = new RegExp(`<${tag}[^>]*>([\\s\\S]*?)<\\/${tag}>`, 'i').exec(xml);
return match ? decodeXml(match[1] ?? '') : undefined;
}
function extractTextNodes(xml: string): string {
const parts: string[] = [];
const textRe = /<t\b[^>]*>([\s\S]*?)<\/t>/gi;
for (const match of xml.matchAll(textRe)) {
parts.push(decodeXml(match[1] ?? ''));
}
return parts.join('');
}
async function readZipText(zip: JSZip, path: string): Promise<string> {
const file = zip.file(path);
Iif (!file) throw new StatskontoretError(`Statskontoret workbook missing ${path}`, 'workbook');
return file.async('string');
}
function extractPageLastModified(html: string): string | undefined {
const match = /<meta\s+name=["']last-modified["']\s+content=["']([^"']+)["']/i.exec(html);
return match ? decodeHtml(match[1] ?? '') : undefined;
}
function decodeHtml(value: string): string {
// Reuse the centralized infrastructure decoder to keep entity handling consistent
// with the rest of the platform; ` ` is normalised to a regular space here
// to keep downstream whitespace and link-text matching predictable.
return decodeHtmlEntities(value).replace(/\u00a0/g, ' ');
}
function decodeXml(value: string): string {
return decodeHtml(value);
}
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