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* @module scripts/statskontoret/domain/budget
* @description Budget-outturn row parsing and summary aggregation for the
* årsutfall, månadsutfall and budget-time-series Statskontoret workbooks.
*
* Field names are normalised so Swedish characters and capitalisation
* differences in Statskontoret's column headers are tolerated transparently.
*
* @author Hack23 AB
* @license Apache-2.0
*/
import { rowsToRecords } from '../extractors/rows-to-records.js';
import {
buildRecordLookup,
findField,
parseStatskontoretOptionalInt,
parseStatskontoretSwedishNumber,
roundOneDecimal,
} from '../internal/text.js';
import type {
StatskontoretBudgetOptions,
StatskontoretBudgetRow,
StatskontoretBudgetSummary,
StatskontoretWorkbook,
} from '../types.js';
/**
* 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 =
findField(lookup, [
'inkomsttitelnamn',
'inkomsttitelgruppsnamn',
'anslagsnamn',
'utgiftsomradesnamn',
'utgiftsomrade',
'titel',
'name',
'namn',
'rubrik',
])?.trim() ?? '';
const code = findField(lookup, [
'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) {
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;
}
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