/**
 * Comprehensive tests for the bank file parser library.
 *
 * Covers auto-detection, parsing for all Swedish bank formats (Nordea, SEB,
 * Swedbank, Handelsbanken), ISO 20022 camt.053 XML, external ID generation,
 * file hashing, stats calculation, date range extraction, and edge cases.
 */

import { detectFileFormat, parseBankFile, generateExternalId, generateFileHash, getFormat, getAllFormats } from '../parser'
import type { ParsedBankTransaction, BankFileFormatId } from '../types'

// ---------------------------------------------------------------------------
// Test data — realistic CSV/XML content for each Swedish bank format
// ---------------------------------------------------------------------------

const NORDEA_CSV = [
  'Datum,Transaktion,Kategori,Belopp,Saldo',
  '2024-01-15,SPOTIFY AB,,"-99,00","12 345,67"',
  '2024-01-14,ICA MAXI LINDHAGEN,,"-432,50","12 444,67"',
  '2024-01-13,LÖNEUTBETALNING,,"25 000,00","12 877,17"',
].join('\n')

const NORDEA_CSV_WITH_RESERVED = [
  'Datum,Transaktion,Kategori,Belopp,Saldo',
  '2024-01-15,SPOTIFY AB,,"-99,00","12 345,67"',
  '2024-01-14,Reserverat köp CLAS OHLSON,,"-199,00","12 444,67"',
  '2024-01-13,LÖNEUTBETALNING,,"25 000,00","12 643,67"',
].join('\n')

const NORDEA_CSV_SWEDISH_CHARS = [
  'Datum,Transaktion,Kategori,Belopp,Saldo',
  '2024-03-01,GÖTEBORGS HAMNCAFÉ,,"-85,00","5 000,00"',
  '2024-03-02,ÅHLENS CITY,,"-249,00","4 751,00"',
  '2024-03-03,ÄRLA GÅRD AB,,"1 200,00","5 951,00"',
].join('\n')

const SEB_CSV = [
  'Bokföringsdag;Valutadag;Verifikationsnummer;Text;Belopp;Saldo',
  '2024-01-15;2024-01-15;12345;SPOTIFY AB;-99,00;12345,67',
  '2024-01-14;2024-01-14;12346;HEMKÖP FRIDHEMSPLAN;-432,50;12444,67',
  '2024-01-13;2024-01-13;12347;LÖNEUTBETALNING;25000,00;12877,17',
].join('\n')

const SWEDBANK_CSV = [
  'Kontouppgifter',
  'Clearingnummer,Kontonummer,Datum,Text,Belopp,Saldo',
  '8123,12345678,2024-01-15,SPOTIFY AB,-99.00,12345.67',
  '8123,12345678,2024-01-14,ICA MAXI,-432.50,12444.67',
  '8123,12345678,2024-01-13,LÖNEUTBETALNING,25000.00,12877.17',
].join('\n')

const SWEDBANK_CSV_NO_METADATA = [
  'Clearingnummer,Kontonummer,Datum,Text,Belopp,Saldo',
  '8123,12345678,2024-02-01,TELIA SVERIGE,-299.00,10000.00',
  '8123,12345678,2024-02-02,SKATTEVERKET INBETALNING,5000.00,15000.00',
].join('\n')

const HANDELSBANKEN_CSV = [
  'Reskontradatum;Transaktionsdatum;Text;Belopp;Saldo',
  '2024-01-15;2024-01-15;SPOTIFY AB;-99,00;12345,67',
  '2024-01-14;2024-01-14;HEMKÖP;-432,50;12444,67',
  '2024-01-13;2024-01-13;LÖNEUTBETALNING;25000,00;12877,17',
].join('\n')

const HANDELSBANKEN_CSV_WITH_PREL = [
  'Reskontradatum;Transaktionsdatum;Text;Belopp;Saldo',
  '2024-01-15;2024-01-15;SPOTIFY AB;-99,00;12345,67',
  '2024-01-14;2024-01-14;Prel kortköp CLAS OHLSON;-199,00;12444,67',
  '2024-01-13;2024-01-13;LÖNEUTBETALNING;25000,00;12643,67',
].join('\n')

const CAMT053_XML = `<?xml version="1.0" encoding="UTF-8"?>
<Document xmlns="urn:iso:std:iso:20022:tech:xsd:camt.053.001.02">
<BkToCstmrStmt>
<Stmt>
<Acct><Ccy>SEK</Ccy></Acct>
<Ntry>
  <BookgDt><Dt>2024-01-15</Dt></BookgDt>
  <Amt Ccy="SEK">99.00</Amt>
  <CdtDbtInd>DBIT</CdtDbtInd>
  <NtryRef>REF001</NtryRef>
  <NtryDtls><TxDtls>
    <RmtInf><Ustrd>SPOTIFY AB</Ustrd></RmtInf>
  </TxDtls></NtryDtls>
</Ntry>
<Ntry>
  <BookgDt><Dt>2024-01-14</Dt></BookgDt>
  <Amt Ccy="SEK">25000.00</Amt>
  <CdtDbtInd>CRDT</CdtDbtInd>
  <NtryRef>REF002</NtryRef>
  <NtryDtls><TxDtls>
    <RmtInf><Ustrd>LÖNEUTBETALNING</Ustrd></RmtInf>
  </TxDtls></NtryDtls>
</Ntry>
</Stmt>
</BkToCstmrStmt>
</Document>`

const CAMT053_XML_WITH_STRUCTURED_REF = `<?xml version="1.0" encoding="UTF-8"?>
<Document xmlns="urn:iso:std:iso:20022:tech:xsd:camt.053.001.02">
<BkToCstmrStmt>
<Stmt>
<Ntry>
  <BookgDt><Dt>2024-02-01</Dt></BookgDt>
  <Amt Ccy="SEK">1500.00</Amt>
  <CdtDbtInd>CRDT</CdtDbtInd>
  <NtryRef>REF100</NtryRef>
  <NtryDtls><TxDtls>
    <RmtInf>
      <Strd><CdtrRefInf><Ref>OCR123456789</Ref></CdtrRefInf></Strd>
      <Ustrd>Betalning faktura 1001</Ustrd>
    </RmtInf>
  </TxDtls></NtryDtls>
</Ntry>
</Stmt>
</BkToCstmrStmt>
</Document>`

const LANSFORSAKRINGAR_CSV = [
  '"Datum";"Bokföringsdag";"Typ";"Text";"Belopp";"Saldo"',
  '"2024-01-15";"2024-01-15";"Kortköp";"SPOTIFY AB";"-99,00";"12 345,67"',
  '"2024-01-14";"2024-01-14";"Kortköp";"ICA MAXI";"-432,50";"12 444,67"',
  '"2024-01-13";"2024-01-13";"Insättning";"LÖNEUTBETALNING";"25 000,00";"12 877,17"',
].join('\n')

const LANSFORSAKRINGAR_CSV_NO_HEADER = [
  '"2024-01-15";"2024-01-15";"Kortköp";"SPOTIFY AB";"-99,00";"12 345,67"',
  '"2024-01-14";"2024-01-14";"Kortköp";"ICA MAXI";"-432,50";"12 444,67"',
].join('\n')

const ICA_BANKEN_CSV = [
  'Kontonamn: Lönekonto',
  'Kontonummer: 1234 567 890',
  'Saldo: 12 877,17',
  'Tillgängligt belopp: 12 877,17',
  'Period: 2024-01-01 - 2024-01-31',
  'Exporterad: 2024-02-01',
  'Datum;Text;Belopp;Saldo',
  '2024-01-15;SPOTIFY AB;-99,00;12345,67',
  '2024-01-14;ICA MAXI LINDHAGEN;-432,50;12444,67',
  '2024-01-13;LÖNEUTBETALNING;25000,00;12877,17',
].join('\n')

const SKANDIA_CSV = [
  'Datum;Beskrivning;Belopp;Saldo',
  '2024-01-15;SPOTIFY AB;-99,00;12345,67',
  '2024-01-14;HEMKÖP FRIDHEMSPLAN;-432,50;12444,67',
  '2024-01-13;LÖNEUTBETALNING;25000,00;12877,17',
].join('\n')

const SKANDIA_CSV_WITH_BANKKATEGORI = [
  'Datum;Beskrivning;Belopp;Saldo;Bankkategori',
  '2024-01-15;SPOTIFY AB;-99,00;12345,67;Underhållning',
  '2024-01-14;ICA MAXI;-432,50;12444,67;Livsmedel',
].join('\n')

const LUNAR_CSV = [
  'Date,Text,Amount,Balance',
  '2024-01-15,SPOTIFY AB,"-99,00","12.345,67"',
  '2024-01-14,ICA MAXI LINDHAGEN,"-432,50","12.444,67"',
  '2024-01-13,LÖNEUTBETALNING,"25.000,00","12.877,17"',
].join('\n')

const UNKNOWN_CSV = [
  'id,name,value,timestamp',
  '1,Widget A,100,2024-01-15T10:00:00',
  '2,Widget B,200,2024-01-16T11:00:00',
].join('\n')

const EMPTY_FILE = ''

const HEADER_ONLY_NORDEA = 'Datum,Transaktion,Kategori,Belopp,Saldo\n'

// ---------------------------------------------------------------------------
// Tests
// ---------------------------------------------------------------------------

describe('detectFileFormat', () => {
  it('detects Nordea CSV from header keywords', () => {
    const format = detectFileFormat(NORDEA_CSV, 'transaktioner.csv')
    expect(format).not.toBeNull()
    expect(format!.id).toBe('nordea')
  })

  it('detects SEB CSV from semicolon-delimited header with bokföringsdag', () => {
    const format = detectFileFormat(SEB_CSV, 'kontoutdrag.csv')
    expect(format).not.toBeNull()
    expect(format!.id).toBe('seb')
  })

  it('detects Swedbank CSV from clearingnummer header', () => {
    const format = detectFileFormat(SWEDBANK_CSV, 'export.csv')
    expect(format).not.toBeNull()
    expect(format!.id).toBe('swedbank')
  })

  it('detects Swedbank CSV when header is on the first line (no metadata)', () => {
    const format = detectFileFormat(SWEDBANK_CSV_NO_METADATA, 'export.csv')
    expect(format).not.toBeNull()
    expect(format!.id).toBe('swedbank')
  })

  it('detects Handelsbanken CSV from reskontradatum/transaktionsdatum header', () => {
    const format = detectFileFormat(HANDELSBANKEN_CSV, 'handelsbanken.csv')
    expect(format).not.toBeNull()
    expect(format!.id).toBe('handelsbanken')
  })

  it('detects camt.053 XML from namespace and .xml extension', () => {
    const format = detectFileFormat(CAMT053_XML, 'statement.xml')
    expect(format).not.toBeNull()
    expect(format!.id).toBe('camt053')
  })

  it('detects camt.053 XML when content includes BkToCstmrStmt tag', () => {
    const xmlContent = '<?xml version="1.0"?><Document><BkToCstmrStmt></BkToCstmrStmt></Document>'
    const format = detectFileFormat(xmlContent, 'data.xml')
    expect(format).not.toBeNull()
    expect(format!.id).toBe('camt053')
  })

  it('does not detect camt.053 without .xml extension', () => {
    // camt053 detection requires .xml extension
    const format = detectFileFormat(CAMT053_XML, 'statement.csv')
    // It should not match camt053 since extension is .csv
    // But it could match something else if the content resembles a CSV header
    // The important check is that it does NOT return camt053
    if (format) {
      expect(format.id).not.toBe('camt053')
    }
  })

  it('detects Länsförsäkringar CSV from header with "typ" keyword', () => {
    const format = detectFileFormat(LANSFORSAKRINGAR_CSV, 'lansforsakringar.csv')
    expect(format).not.toBeNull()
    expect(format!.id).toBe('lansforsakringar')
  })

  it('detects Länsförsäkringar CSV from two adjacent date fields (no header)', () => {
    const format = detectFileFormat(LANSFORSAKRINGAR_CSV_NO_HEADER, 'export.csv')
    expect(format).not.toBeNull()
    expect(format!.id).toBe('lansforsakringar')
  })

  it('detects ICA Banken CSV from metadata rows before header', () => {
    const format = detectFileFormat(ICA_BANKEN_CSV, 'ica.csv')
    expect(format).not.toBeNull()
    expect(format!.id).toBe('ica_banken')
  })

  it('detects Skandia CSV from "beskrivning" header keyword', () => {
    const format = detectFileFormat(SKANDIA_CSV, 'skandia.csv')
    expect(format).not.toBeNull()
    expect(format!.id).toBe('skandia')
  })

  it('detects Skandia CSV from "bankkategori" header keyword', () => {
    const format = detectFileFormat(SKANDIA_CSV_WITH_BANKKATEGORI, 'skandia.csv')
    expect(format).not.toBeNull()
    expect(format!.id).toBe('skandia')
  })

  it('detects Lunar CSV from English headers (date, text, amount, balance)', () => {
    const format = detectFileFormat(LUNAR_CSV, 'lunar.csv')
    expect(format).not.toBeNull()
    expect(format!.id).toBe('lunar')
  })

  it('returns null for unrecognized CSV content', () => {
    const format = detectFileFormat(UNKNOWN_CSV, 'data.csv')
    expect(format).toBeNull()
  })

  it('returns null for empty content', () => {
    const format = detectFileFormat(EMPTY_FILE, 'empty.csv')
    expect(format).toBeNull()
  })

  it('generic_csv format never auto-detects', () => {
    // Even with simple CSV content, generic should not be picked
    const simpleCSV = 'date,description,amount\n2024-01-15,Test,-100'
    const format = detectFileFormat(simpleCSV, 'test.csv')
    if (format) {
      expect(format.id).not.toBe('generic_csv')
    }
  })

  it('is case-insensitive on header detection', () => {
    const upperNordea = 'DATUM,TRANSAKTION,KATEGORI,BELOPP,SALDO\n2024-01-15,Test,,"-100,00","5000,00"'
    const format = detectFileFormat(upperNordea, 'test.csv')
    expect(format).not.toBeNull()
    expect(format!.id).toBe('nordea')
  })
})

describe('parseBankFile — Nordea format', () => {
  it('parses comma-delimited CSV with comma decimal separator', () => {
    const result = parseBankFile(NORDEA_CSV, 'nordea.csv')

    expect(result.format).toBe('nordea')
    expect(result.format_name).toBe('Nordea')
    expect(result.transactions).toHaveLength(3)
    expect(result.issues).toHaveLength(0)
  })

  it('correctly parses negative amounts with comma decimal and space thousands', () => {
    const result = parseBankFile(NORDEA_CSV, 'nordea.csv')

    const spotify = result.transactions[0]
    expect(spotify.amount).toBe(-99)
    expect(spotify.description).toBe('SPOTIFY AB')
    expect(spotify.date).toBe('2024-01-15')
    expect(spotify.currency).toBe('SEK')

    const ica = result.transactions[1]
    expect(ica.amount).toBe(-432.5)
  })

  it('correctly parses positive amounts with space thousands separator', () => {
    const result = parseBankFile(NORDEA_CSV, 'nordea.csv')

    const salary = result.transactions[2]
    expect(salary.amount).toBe(25000)
    expect(salary.description).toBe('LÖNEUTBETALNING')
  })

  it('parses balance field with space thousands separator', () => {
    const result = parseBankFile(NORDEA_CSV, 'nordea.csv')

    const spotify = result.transactions[0]
    expect(spotify.balance).toBe(12345.67)
  })

  it('filters out "Reserverat" (pending) transactions', () => {
    const result = parseBankFile(NORDEA_CSV_WITH_RESERVED, 'nordea.csv')

    expect(result.transactions).toHaveLength(2)
    expect(result.stats.skipped_rows).toBe(1)

    const descriptions = result.transactions.map((t) => t.description)
    expect(descriptions).not.toContain(expect.stringContaining('Reserverat'))
  })

  it('handles Swedish characters (a-ring, a-diaeresis, o-diaeresis)', () => {
    const result = parseBankFile(NORDEA_CSV_SWEDISH_CHARS, 'nordea.csv')

    expect(result.transactions).toHaveLength(3)
    expect(result.transactions[0].description).toBe('GÖTEBORGS HAMNCAFÉ')
    expect(result.transactions[1].description).toBe('ÅHLENS CITY')
    expect(result.transactions[2].description).toBe('ÄRLA GÅRD AB')
  })

  it('stores raw_line for each transaction', () => {
    const result = parseBankFile(NORDEA_CSV, 'nordea.csv')

    result.transactions.forEach((tx) => {
      expect(tx.raw_line).toBeDefined()
      expect(tx.raw_line!.length).toBeGreaterThan(0)
    })
  })

  it('handles header-only file with no data rows', () => {
    const result = parseBankFile(HEADER_ONLY_NORDEA, 'nordea.csv')

    expect(result.format).toBe('nordea')
    expect(result.transactions).toHaveLength(0)
    expect(result.date_from).toBeNull()
    expect(result.date_to).toBeNull()
    expect(result.stats.parsed_rows).toBe(0)
  })
})

describe('parseBankFile — SEB format', () => {
  it('parses semicolon-delimited CSV with comma decimal separator', () => {
    const result = parseBankFile(SEB_CSV, 'seb.csv')

    expect(result.format).toBe('seb')
    expect(result.format_name).toBe('SEB')
    expect(result.transactions).toHaveLength(3)
    expect(result.issues).toHaveLength(0)
  })

  it('correctly extracts columns using dynamic header mapping', () => {
    const result = parseBankFile(SEB_CSV, 'seb.csv')

    const spotify = result.transactions[0]
    expect(spotify.date).toBe('2024-01-15')
    expect(spotify.description).toBe('SPOTIFY AB')
    expect(spotify.amount).toBe(-99)
    expect(spotify.balance).toBe(12345.67)
  })

  it('parses positive income amounts correctly', () => {
    const result = parseBankFile(SEB_CSV, 'seb.csv')

    const salary = result.transactions[2]
    expect(salary.amount).toBe(25000)
    expect(salary.description).toBe('LÖNEUTBETALNING')
  })

  it('handles alternative SEB header names', () => {
    const altSEB = [
      'Bokforingsdatum;Valutadag;Verifikationsnummer;Text;Belopp;Saldo',
      '2024-01-15;2024-01-15;12345;TEST;-50,00;1000,00',
    ].join('\n')

    const result = parseBankFile(altSEB, 'seb_alt.csv')
    expect(result.format).toBe('seb')
    expect(result.transactions).toHaveLength(1)
    expect(result.transactions[0].amount).toBe(-50)
  })
})

describe('parseBankFile — Swedbank format', () => {
  it('parses comma-delimited CSV with PERIOD decimal separator', () => {
    const result = parseBankFile(SWEDBANK_CSV, 'swedbank.csv')

    expect(result.format).toBe('swedbank')
    expect(result.format_name).toBe('Swedbank')
    expect(result.transactions).toHaveLength(3)
    expect(result.issues).toHaveLength(0)
  })

  it('correctly handles period decimal separator (the Swedish exception)', () => {
    const result = parseBankFile(SWEDBANK_CSV, 'swedbank.csv')

    const spotify = result.transactions[0]
    expect(spotify.amount).toBe(-99)
    expect(spotify.balance).toBe(12345.67)

    const ica = result.transactions[1]
    expect(ica.amount).toBe(-432.5)
  })

  it('skips metadata line when present (first line is account info)', () => {
    const result = parseBankFile(SWEDBANK_CSV, 'swedbank.csv')

    // With metadata line, there are 3 data rows after headerLineIdx=1
    expect(result.transactions).toHaveLength(3)
    // No transaction should have "Kontouppgifter" as description
    const descriptions = result.transactions.map((t) => t.description)
    expect(descriptions).not.toContain('Kontouppgifter')
  })

  it('works when header is on the first line (no metadata)', () => {
    const result = parseBankFile(SWEDBANK_CSV_NO_METADATA, 'swedbank.csv')

    expect(result.format).toBe('swedbank')
    expect(result.transactions).toHaveLength(2)
    expect(result.transactions[0].amount).toBe(-299)
    expect(result.transactions[1].amount).toBe(5000)
  })

  it('extracts dates correctly', () => {
    const result = parseBankFile(SWEDBANK_CSV, 'swedbank.csv')

    expect(result.transactions[0].date).toBe('2024-01-15')
    expect(result.transactions[2].date).toBe('2024-01-13')
  })
})

describe('parseBankFile — Handelsbanken format', () => {
  it('parses semicolon-delimited CSV with comma decimal separator', () => {
    const result = parseBankFile(HANDELSBANKEN_CSV, 'handelsbanken.csv')

    expect(result.format).toBe('handelsbanken')
    expect(result.format_name).toBe('Handelsbanken')
    expect(result.transactions).toHaveLength(3)
    expect(result.issues).toHaveLength(0)
  })

  it('correctly parses amounts and balances', () => {
    const result = parseBankFile(HANDELSBANKEN_CSV, 'handelsbanken.csv')

    expect(result.transactions[0].amount).toBe(-99)
    expect(result.transactions[0].balance).toBe(12345.67)
    expect(result.transactions[2].amount).toBe(25000)
  })

  it('filters out "Prel" (preliminary) transactions', () => {
    const result = parseBankFile(HANDELSBANKEN_CSV_WITH_PREL, 'handelsbanken.csv')

    expect(result.transactions).toHaveLength(2)
    expect(result.stats.skipped_rows).toBe(1)

    const descriptions = result.transactions.map((t) => t.description)
    expect(descriptions).not.toContain(expect.stringContaining('Prel'))
  })

  it('prefers transaktionsdatum over reskontradatum when both are present', () => {
    // Handelsbanken has both columns; transaktionsdatum should be used
    const result = parseBankFile(HANDELSBANKEN_CSV, 'handelsbanken.csv')

    // In our test data both dates are the same, but verify it selects dates properly
    expect(result.transactions[0].date).toBe('2024-01-15')
  })

  it('uses transaktionsdatum as the primary date field', () => {
    // Create data where reskontradatum differs from transaktionsdatum
    const diffDates = [
      'Reskontradatum;Transaktionsdatum;Text;Belopp;Saldo',
      '2024-01-16;2024-01-15;PURCHASE;-100,00;5000,00',
    ].join('\n')

    const result = parseBankFile(diffDates, 'shb.csv')
    expect(result.transactions[0].date).toBe('2024-01-15')
  })
})

describe('parseBankFile — Länsförsäkringar format', () => {
  it('parses semicolon-delimited CSV with quoted fields and comma decimal separator', () => {
    const result = parseBankFile(LANSFORSAKRINGAR_CSV, 'lf.csv')

    expect(result.format).toBe('lansforsakringar')
    expect(result.format_name).toBe('Länsförsäkringar')
    expect(result.transactions).toHaveLength(3)
    expect(result.issues).toHaveLength(0)
  })

  it('correctly parses amounts with comma decimal and space thousands', () => {
    const result = parseBankFile(LANSFORSAKRINGAR_CSV, 'lf.csv')

    expect(result.transactions[0].amount).toBe(-99)
    expect(result.transactions[0].description).toBe('SPOTIFY AB')
    expect(result.transactions[0].date).toBe('2024-01-15')

    expect(result.transactions[1].amount).toBe(-432.5)
    expect(result.transactions[2].amount).toBe(25000)
  })

  it('parses balance field', () => {
    const result = parseBankFile(LANSFORSAKRINGAR_CSV, 'lf.csv')

    expect(result.transactions[0].balance).toBe(12345.67)
  })

  it('handles files without a header row (data-only)', () => {
    const result = parseBankFile(LANSFORSAKRINGAR_CSV_NO_HEADER, 'lf.csv')

    expect(result.format).toBe('lansforsakringar')
    expect(result.transactions).toHaveLength(2)
    expect(result.transactions[0].amount).toBe(-99)
    expect(result.transactions[1].amount).toBe(-432.5)
  })

  it('calculates stats correctly', () => {
    const result = parseBankFile(LANSFORSAKRINGAR_CSV, 'lf.csv')

    expect(result.stats.total_income).toBe(25000)
    expect(result.stats.total_expenses).toBe(-531.5)
    expect(result.stats.parsed_rows).toBe(3)
  })

  it('extracts correct date range', () => {
    const result = parseBankFile(LANSFORSAKRINGAR_CSV, 'lf.csv')

    expect(result.date_from).toBe('2024-01-13')
    expect(result.date_to).toBe('2024-01-15')
  })
})

describe('parseBankFile — ICA Banken format', () => {
  it('parses semicolon-delimited CSV with metadata rows before header', () => {
    const result = parseBankFile(ICA_BANKEN_CSV, 'ica.csv')

    expect(result.format).toBe('ica_banken')
    expect(result.format_name).toBe('ICA Banken')
    expect(result.transactions).toHaveLength(3)
    expect(result.issues).toHaveLength(0)
  })

  it('skips metadata rows and finds the correct header', () => {
    const result = parseBankFile(ICA_BANKEN_CSV, 'ica.csv')

    // No transaction should contain metadata text
    const descriptions = result.transactions.map((t) => t.description)
    expect(descriptions).not.toContain(expect.stringContaining('Kontonamn'))
    expect(descriptions).not.toContain(expect.stringContaining('Exporterad'))
  })

  it('correctly parses amounts with comma decimal separator', () => {
    const result = parseBankFile(ICA_BANKEN_CSV, 'ica.csv')

    expect(result.transactions[0].amount).toBe(-99)
    expect(result.transactions[0].description).toBe('SPOTIFY AB')
    expect(result.transactions[0].date).toBe('2024-01-15')

    expect(result.transactions[1].amount).toBe(-432.5)
    expect(result.transactions[2].amount).toBe(25000)
  })

  it('parses balance field', () => {
    const result = parseBankFile(ICA_BANKEN_CSV, 'ica.csv')

    expect(result.transactions[0].balance).toBe(12345.67)
  })

  it('calculates stats correctly', () => {
    const result = parseBankFile(ICA_BANKEN_CSV, 'ica.csv')

    expect(result.stats.total_income).toBe(25000)
    expect(result.stats.total_expenses).toBe(-531.5)
    expect(result.stats.parsed_rows).toBe(3)
  })

  it('extracts correct date range', () => {
    const result = parseBankFile(ICA_BANKEN_CSV, 'ica.csv')

    expect(result.date_from).toBe('2024-01-13')
    expect(result.date_to).toBe('2024-01-15')
  })
})

describe('parseBankFile — Skandia format', () => {
  it('parses semicolon-delimited CSV with comma decimal separator', () => {
    const result = parseBankFile(SKANDIA_CSV, 'skandia.csv')

    expect(result.format).toBe('skandia')
    expect(result.format_name).toBe('Skandia')
    expect(result.transactions).toHaveLength(3)
    expect(result.issues).toHaveLength(0)
  })

  it('correctly parses amounts and descriptions', () => {
    const result = parseBankFile(SKANDIA_CSV, 'skandia.csv')

    expect(result.transactions[0].amount).toBe(-99)
    expect(result.transactions[0].description).toBe('SPOTIFY AB')
    expect(result.transactions[0].date).toBe('2024-01-15')

    expect(result.transactions[1].amount).toBe(-432.5)
    expect(result.transactions[1].description).toBe('HEMKÖP FRIDHEMSPLAN')
    expect(result.transactions[2].amount).toBe(25000)
  })

  it('parses balance field', () => {
    const result = parseBankFile(SKANDIA_CSV, 'skandia.csv')

    expect(result.transactions[0].balance).toBe(12345.67)
  })

  it('handles files with bankkategori column', () => {
    const result = parseBankFile(SKANDIA_CSV_WITH_BANKKATEGORI, 'skandia.csv')

    expect(result.format).toBe('skandia')
    expect(result.transactions).toHaveLength(2)
    expect(result.transactions[0].amount).toBe(-99)
    expect(result.transactions[1].amount).toBe(-432.5)
  })

  it('calculates stats correctly', () => {
    const result = parseBankFile(SKANDIA_CSV, 'skandia.csv')

    expect(result.stats.total_income).toBe(25000)
    expect(result.stats.total_expenses).toBe(-531.5)
    expect(result.stats.parsed_rows).toBe(3)
  })

  it('extracts correct date range', () => {
    const result = parseBankFile(SKANDIA_CSV, 'skandia.csv')

    expect(result.date_from).toBe('2024-01-13')
    expect(result.date_to).toBe('2024-01-15')
  })
})

describe('parseBankFile — Lunar format', () => {
  it('parses comma-delimited CSV with English headers', () => {
    const result = parseBankFile(LUNAR_CSV, 'lunar.csv')

    expect(result.format).toBe('lunar')
    expect(result.format_name).toBe('Lunar')
    expect(result.transactions).toHaveLength(3)
    expect(result.issues).toHaveLength(0)
  })

  it('correctly parses amounts with comma decimal and period thousand separator', () => {
    const result = parseBankFile(LUNAR_CSV, 'lunar.csv')

    expect(result.transactions[0].amount).toBe(-99)
    expect(result.transactions[0].description).toBe('SPOTIFY AB')
    expect(result.transactions[0].date).toBe('2024-01-15')

    expect(result.transactions[1].amount).toBe(-432.5)
    expect(result.transactions[2].amount).toBe(25000)
  })

  it('parses balance field with period thousand separator', () => {
    const result = parseBankFile(LUNAR_CSV, 'lunar.csv')

    expect(result.transactions[0].balance).toBe(12345.67)
    expect(result.transactions[2].balance).toBe(12877.17)
  })

  it('calculates stats correctly', () => {
    const result = parseBankFile(LUNAR_CSV, 'lunar.csv')

    expect(result.stats.total_income).toBe(25000)
    expect(result.stats.total_expenses).toBe(-531.5)
    expect(result.stats.parsed_rows).toBe(3)
  })

  it('extracts correct date range', () => {
    const result = parseBankFile(LUNAR_CSV, 'lunar.csv')

    expect(result.date_from).toBe('2024-01-13')
    expect(result.date_to).toBe('2024-01-15')
  })

  it('does not confuse Lunar (English) with Nordea (Swedish) headers', () => {
    // Nordea has Swedish headers, Lunar has English
    const nordeaResult = detectFileFormat(NORDEA_CSV, 'test.csv')
    const lunarResult = detectFileFormat(LUNAR_CSV, 'test.csv')

    expect(nordeaResult!.id).toBe('nordea')
    expect(lunarResult!.id).toBe('lunar')
  })
})

describe('parseBankFile — camt.053 XML format', () => {
  it('parses XML with credit and debit entries', () => {
    const result = parseBankFile(CAMT053_XML, 'statement.xml')

    expect(result.format).toBe('camt053')
    expect(result.format_name).toBe('ISO 20022 camt.053')
    expect(result.transactions).toHaveLength(2)
  })

  it('applies DBIT indicator as negative amount', () => {
    const result = parseBankFile(CAMT053_XML, 'statement.xml')

    const debit = result.transactions.find((t) => t.description === 'SPOTIFY AB')
    expect(debit).toBeDefined()
    expect(debit!.amount).toBe(-99)
  })

  it('applies CRDT indicator as positive amount', () => {
    const result = parseBankFile(CAMT053_XML, 'statement.xml')

    const credit = result.transactions.find((t) => t.description === 'LÖNEUTBETALNING')
    expect(credit).toBeDefined()
    expect(credit!.amount).toBe(25000)
  })

  it('extracts entry reference into raw_line for external ID generation', () => {
    const result = parseBankFile(CAMT053_XML, 'statement.xml')

    const debit = result.transactions[0]
    expect(debit.raw_line).toBe('REF001')
  })

  it('extracts OCR reference from structured remittance info', () => {
    const result = parseBankFile(CAMT053_XML_WITH_STRUCTURED_REF, 'statement.xml')

    expect(result.transactions).toHaveLength(1)
    expect(result.transactions[0].reference).toBe('OCR123456789')
  })

  it('uses unstructured remittance info as description', () => {
    const result = parseBankFile(CAMT053_XML, 'statement.xml')

    expect(result.transactions[0].description).toBe('SPOTIFY AB')
  })

  it('extracts currency from Amount element', () => {
    const result = parseBankFile(CAMT053_XML, 'statement.xml')

    result.transactions.forEach((tx) => {
      expect(tx.currency).toBe('SEK')
    })
  })

  it('handles XML with no Ntry elements', () => {
    const emptyXml = `<?xml version="1.0"?>
<Document xmlns="urn:iso:std:iso:20022:tech:xsd:camt.053.001.02">
<BkToCstmrStmt><Stmt></Stmt></BkToCstmrStmt></Document>`

    const result = parseBankFile(emptyXml, 'empty.xml')

    expect(result.format).toBe('camt053')
    expect(result.transactions).toHaveLength(0)
    expect(result.issues.length).toBeGreaterThan(0)
    expect(result.issues[0].message).toContain('No <Ntry> elements')
  })
})

describe('parseBankFile — explicit format override', () => {
  it('uses the specified format instead of auto-detection', () => {
    // Force parsing Nordea content as SEB (will produce issues but should use SEB format)
    const result = parseBankFile(
      'Datum,Transaktion,Kategori,Belopp,Saldo\n2024-01-15,Test,,"-100,00","5000,00"',
      'nordea.csv',
      'seb'
    )

    expect(result.format).toBe('seb')
  })

  it('returns error for unknown formatId', () => {
    const result = parseBankFile(NORDEA_CSV, 'test.csv', 'unknown_format' as BankFileFormatId)

    expect(result.format).toBe('unknown_format')
    expect(result.format_name).toBe('Unknown')
    expect(result.transactions).toHaveLength(0)
    expect(result.issues).toHaveLength(1)
    expect(result.issues[0].severity).toBe('error')
    expect(result.issues[0].message).toContain('Unknown format')
  })

  it('returns format detection error when no format matches and no override given', () => {
    const result = parseBankFile(UNKNOWN_CSV, 'unknown.csv')

    expect(result.format).toBe('generic_csv')
    expect(result.format_name).toBe('Unknown')
    expect(result.transactions).toHaveLength(0)
    expect(result.issues).toHaveLength(1)
    expect(result.issues[0].message).toContain('Could not auto-detect')
  })

  it('can force generic_csv format by explicit ID', () => {
    const csvContent = '2024-01-15,Some purchase,-50.00\n2024-01-16,Income,1000.00'
    const result = parseBankFile(csvContent, 'test.csv', 'generic_csv')

    // generic_csv uses a default mapping (date=0, description=1, amount=2)
    // But the first line is treated as header (skip_rows=1), so only second row is data
    expect(result.format).toBe('generic_csv')
  })
})

describe('generateExternalId', () => {
  const baseTx: ParsedBankTransaction = {
    date: '2024-01-15',
    description: 'SPOTIFY AB',
    amount: -99,
    currency: 'SEK',
    balance: 12345.67,
    reference: null,
    counterparty: null,
    raw_line: '2024-01-15,SPOTIFY AB,,"-99,00","12 345,67"',
  }

  it('generates SHA-256 composite key for CSV formats', () => {
    const id = generateExternalId(baseTx, 'nordea', 0)

    expect(id).toMatch(/^nordea_[0-9a-f]{16}$/)
  })

  it('generates different IDs for different row indices (same transaction data)', () => {
    const id1 = generateExternalId(baseTx, 'nordea', 0)
    const id2 = generateExternalId(baseTx, 'nordea', 1)

    expect(id1).not.toBe(id2)
  })

  it('generates different IDs for different formats (same data, same row index)', () => {
    const nordeaId = generateExternalId(baseTx, 'nordea', 0)
    const sebId = generateExternalId(baseTx, 'seb', 0)

    expect(nordeaId).not.toBe(sebId)
  })

  it('generates deterministic IDs for the same inputs', () => {
    const id1 = generateExternalId(baseTx, 'nordea', 0)
    const id2 = generateExternalId(baseTx, 'nordea', 0)

    expect(id1).toBe(id2)
  })

  it('uses entry reference for camt.053 transactions with NtryRef', () => {
    const camtTx: ParsedBankTransaction = {
      date: '2024-01-15',
      description: 'SPOTIFY AB',
      amount: -99,
      currency: 'SEK',
      raw_line: 'REF001', // NtryRef stored in raw_line
    }

    const id = generateExternalId(camtTx, 'camt053', 0)

    expect(id).toBe('camt053_REF001')
  })

  it('falls back to hash for camt.053 when raw_line starts with camt053_entry_', () => {
    const camtTx: ParsedBankTransaction = {
      date: '2024-01-15',
      description: 'SPOTIFY AB',
      amount: -99,
      currency: 'SEK',
      raw_line: 'camt053_entry_0', // Auto-generated fallback reference
    }

    const id = generateExternalId(camtTx, 'camt053', 0)

    // Should fall through to hash-based ID since raw_line starts with 'camt053_entry_'
    expect(id).toMatch(/^camt053_[0-9a-f]{16}$/)
  })

  it('falls back to hash for camt.053 when raw_line is undefined', () => {
    const camtTx: ParsedBankTransaction = {
      date: '2024-01-15',
      description: 'SPOTIFY AB',
      amount: -99,
      currency: 'SEK',
    }

    const id = generateExternalId(camtTx, 'camt053', 0)

    expect(id).toMatch(/^camt053_[0-9a-f]{16}$/)
  })

  it('includes amount in hash so different amounts produce different IDs', () => {
    const tx1 = { ...baseTx, amount: -99 }
    const tx2 = { ...baseTx, amount: -100 }

    const id1 = generateExternalId(tx1, 'nordea', 0)
    const id2 = generateExternalId(tx2, 'nordea', 0)

    expect(id1).not.toBe(id2)
  })

  it('includes description in hash so different descriptions produce different IDs', () => {
    const tx1 = { ...baseTx, description: 'SPOTIFY AB' }
    const tx2 = { ...baseTx, description: 'NETFLIX' }

    const id1 = generateExternalId(tx1, 'nordea', 0)
    const id2 = generateExternalId(tx2, 'nordea', 0)

    expect(id1).not.toBe(id2)
  })
})

describe('generateFileHash', () => {
  it('returns a SHA-256 hex string', () => {
    const hash = generateFileHash(NORDEA_CSV)

    expect(hash).toMatch(/^[0-9a-f]{64}$/)
  })

  it('produces deterministic output for the same input', () => {
    const hash1 = generateFileHash(NORDEA_CSV)
    const hash2 = generateFileHash(NORDEA_CSV)

    expect(hash1).toBe(hash2)
  })

  it('produces different hashes for different content', () => {
    const hash1 = generateFileHash(NORDEA_CSV)
    const hash2 = generateFileHash(SEB_CSV)

    expect(hash1).not.toBe(hash2)
  })

  it('produces different hash even for tiny content differences', () => {
    const hash1 = generateFileHash('abc')
    const hash2 = generateFileHash('abd')

    expect(hash1).not.toBe(hash2)
  })

  it('handles empty string', () => {
    const hash = generateFileHash('')
    expect(hash).toMatch(/^[0-9a-f]{64}$/)
  })
})

describe('stats calculation', () => {
  it('calculates total_income as sum of positive amounts (Nordea)', () => {
    const result = parseBankFile(NORDEA_CSV, 'nordea.csv')

    expect(result.stats.total_income).toBe(25000)
  })

  it('calculates total_expenses as sum of negative amounts (Nordea)', () => {
    const result = parseBankFile(NORDEA_CSV, 'nordea.csv')

    // -99 + -432.5 = -531.5
    expect(result.stats.total_expenses).toBe(-531.5)
  })

  it('calculates parsed_rows correctly', () => {
    const result = parseBankFile(NORDEA_CSV, 'nordea.csv')

    expect(result.stats.parsed_rows).toBe(3)
  })

  it('calculates total_rows (excluding header)', () => {
    const result = parseBankFile(NORDEA_CSV, 'nordea.csv')

    // 4 lines total - 1 header = 3 data rows
    expect(result.stats.total_rows).toBe(3)
  })

  it('tracks skipped_rows for reserved/preliminary transactions', () => {
    const result = parseBankFile(NORDEA_CSV_WITH_RESERVED, 'nordea.csv')

    expect(result.stats.skipped_rows).toBe(1)
    expect(result.stats.parsed_rows).toBe(2)
  })

  it('calculates stats correctly for SEB format', () => {
    const result = parseBankFile(SEB_CSV, 'seb.csv')

    expect(result.stats.total_income).toBe(25000)
    expect(result.stats.total_expenses).toBe(-531.5)
    expect(result.stats.parsed_rows).toBe(3)
    expect(result.stats.skipped_rows).toBe(0)
  })

  it('calculates stats correctly for Swedbank format', () => {
    const result = parseBankFile(SWEDBANK_CSV, 'swedbank.csv')

    expect(result.stats.total_income).toBe(25000)
    expect(result.stats.total_expenses).toBe(-531.5)
    expect(result.stats.parsed_rows).toBe(3)
  })

  it('calculates stats correctly for camt.053 XML', () => {
    const result = parseBankFile(CAMT053_XML, 'statement.xml')

    expect(result.stats.total_income).toBe(25000)
    expect(result.stats.total_expenses).toBe(-99)
    expect(result.stats.parsed_rows).toBe(2)
    expect(result.stats.total_rows).toBe(2)
  })

  it('uses Math.round(x * 100) / 100 for monetary precision', () => {
    // Create a file that would produce floating point imprecision
    const precisionCSV = [
      'Datum,Transaktion,Kategori,Belopp,Saldo',
      '2024-01-01,TX1,,"-0,10","100,00"',
      '2024-01-02,TX2,,"-0,20","99,90"',
      '2024-01-03,TX3,,"-0,30","99,70"',
    ].join('\n')

    const result = parseBankFile(precisionCSV, 'precision.csv')

    // 0.1 + 0.2 + 0.3 = 0.6000000000000001 without rounding
    // With Math.round(x * 100) / 100, it should be -0.6
    expect(result.stats.total_expenses).toBe(-0.6)
  })
})

describe('date range extraction', () => {
  it('sets date_from to the earliest date', () => {
    const result = parseBankFile(NORDEA_CSV, 'nordea.csv')

    expect(result.date_from).toBe('2024-01-13')
  })

  it('sets date_to to the latest date', () => {
    const result = parseBankFile(NORDEA_CSV, 'nordea.csv')

    expect(result.date_to).toBe('2024-01-15')
  })

  it('returns null dates for empty transaction set', () => {
    const result = parseBankFile(HEADER_ONLY_NORDEA, 'nordea.csv')

    expect(result.date_from).toBeNull()
    expect(result.date_to).toBeNull()
  })

  it('handles single-transaction file (date_from equals date_to)', () => {
    const singleRow = [
      'Datum,Transaktion,Kategori,Belopp,Saldo',
      '2024-06-15,ENSKILD BETALNING,,"-500,00","10 000,00"',
    ].join('\n')

    const result = parseBankFile(singleRow, 'single.csv')

    expect(result.date_from).toBe('2024-06-15')
    expect(result.date_to).toBe('2024-06-15')
  })

  it('calculates correct date range for camt.053', () => {
    const result = parseBankFile(CAMT053_XML, 'statement.xml')

    expect(result.date_from).toBe('2024-01-14')
    expect(result.date_to).toBe('2024-01-15')
  })

  it('sorts dates lexicographically (YYYY-MM-DD is naturally sortable)', () => {
    const multiMonth = [
      'Datum,Transaktion,Kategori,Belopp,Saldo',
      '2024-12-31,DEC TX,,"-10,00","1000,00"',
      '2024-01-01,JAN TX,,"-20,00","990,00"',
      '2024-06-15,JUN TX,,"-30,00","960,00"',
    ].join('\n')

    const result = parseBankFile(multiMonth, 'multimonth.csv')

    expect(result.date_from).toBe('2024-01-01')
    expect(result.date_to).toBe('2024-12-31')
  })
})

describe('empty file handling', () => {
  it('returns error result for completely empty file (no auto-detect match)', () => {
    const result = parseBankFile(EMPTY_FILE, 'empty.csv')

    expect(result.transactions).toHaveLength(0)
    expect(result.issues.length).toBeGreaterThan(0)
    expect(result.date_from).toBeNull()
    expect(result.date_to).toBeNull()
    expect(result.stats.parsed_rows).toBe(0)
  })

  it('returns zero transactions for file with only whitespace', () => {
    const whitespace = '   \n  \n   '
    const result = parseBankFile(whitespace, 'blank.csv')

    expect(result.transactions).toHaveLength(0)
  })

  it('returns zero transactions for Nordea header-only file', () => {
    const result = parseBankFile(HEADER_ONLY_NORDEA, 'nordea.csv')

    expect(result.format).toBe('nordea')
    expect(result.transactions).toHaveLength(0)
    expect(result.stats.total_rows).toBe(0)
  })
})

describe('getFormat and getAllFormats', () => {
  it('getFormat returns the correct format by ID', () => {
    const nordea = getFormat('nordea')
    expect(nordea).toBeDefined()
    expect(nordea!.id).toBe('nordea')
    expect(nordea!.name).toBe('Nordea')

    const seb = getFormat('seb')
    expect(seb).toBeDefined()
    expect(seb!.id).toBe('seb')
  })

  it('getFormat returns undefined for unknown ID', () => {
    const unknown = getFormat('nonexistent' as BankFileFormatId)
    expect(unknown).toBeUndefined()
  })

  it('getAllFormats returns all registered formats', () => {
    const formats = getAllFormats()

    expect(formats.length).toBeGreaterThanOrEqual(10)

    const ids = formats.map((f) => f.id)
    expect(ids).toContain('nordea')
    expect(ids).toContain('seb')
    expect(ids).toContain('swedbank')
    expect(ids).toContain('handelsbanken')
    expect(ids).toContain('lansforsakringar')
    expect(ids).toContain('ica_banken')
    expect(ids).toContain('skandia')
    expect(ids).toContain('lunar')
    expect(ids).toContain('camt053')
    expect(ids).toContain('generic_csv')
  })

  it('camt053 is listed before bank-specific CSV formats (detection priority)', () => {
    const formats = getAllFormats()
    const camtIdx = formats.findIndex((f) => f.id === 'camt053')
    const nordeaIdx = formats.findIndex((f) => f.id === 'nordea')

    expect(camtIdx).toBeLessThan(nordeaIdx)
  })

  it('generic_csv is listed last (manual fallback only)', () => {
    const formats = getAllFormats()
    const genericIdx = formats.findIndex((f) => f.id === 'generic_csv')

    expect(genericIdx).toBe(formats.length - 1)
  })
})

describe('edge cases and robustness', () => {
  it('handles Windows-style line endings (CRLF)', () => {
    const crlfContent = 'Datum,Transaktion,Kategori,Belopp,Saldo\r\n2024-01-15,SPOTIFY AB,,"-99,00","12 345,67"\r\n'

    const result = parseBankFile(crlfContent, 'nordea.csv')

    expect(result.format).toBe('nordea')
    expect(result.transactions).toHaveLength(1)
    expect(result.transactions[0].amount).toBe(-99)
  })

  it('handles BOM (Byte Order Mark) prefix', () => {
    const bomContent = '\uFEFF' + NORDEA_CSV

    const result = parseBankFile(bomContent, 'nordea.csv')

    expect(result.format).toBe('nordea')
    expect(result.transactions).toHaveLength(3)
  })

  it('handles rows with invalid dates gracefully', () => {
    const invalidDate = [
      'Bokföringsdag;Valutadag;Verifikationsnummer;Text;Belopp;Saldo',
      'not-a-date;2024-01-15;12345;SPOTIFY AB;-99,00;12345,67',
      '2024-01-14;2024-01-14;12346;VALID TX;-50,00;12395,67',
    ].join('\n')

    const result = parseBankFile(invalidDate, 'seb.csv')

    expect(result.transactions).toHaveLength(1)
    expect(result.transactions[0].description).toBe('VALID TX')
    expect(result.issues.length).toBeGreaterThan(0)
    expect(result.stats.skipped_rows).toBe(1)
  })

  it('handles rows with invalid amounts gracefully', () => {
    const invalidAmount = [
      'Datum,Transaktion,Kategori,Belopp,Saldo',
      '2024-01-15,SPOTIFY AB,,"abc","12 345,67"',
      '2024-01-14,VALID TX,,"-50,00","12 395,67"',
    ].join('\n')

    const result = parseBankFile(invalidAmount, 'nordea.csv')

    expect(result.transactions).toHaveLength(1)
    expect(result.transactions[0].description).toBe('VALID TX')
    expect(result.stats.skipped_rows).toBe(1)
  })

  it('handles trailing blank lines', () => {
    const trailing = NORDEA_CSV + '\n\n\n'

    const result = parseBankFile(trailing, 'nordea.csv')

    expect(result.transactions).toHaveLength(3)
  })

  it('handles Handelsbanken CSV with only reskontradatum (no transaktionsdatum)', () => {
    const onlyReskontra = [
      'Reskontradatum;Text;Belopp;Saldo',
      '2024-01-15;SPOTIFY AB;-99,00;12345,67',
    ].join('\n')

    const format = detectFileFormat(onlyReskontra, 'shb.csv')
    expect(format).not.toBeNull()
    expect(format!.id).toBe('handelsbanken')
  })

  it('handles large amounts without overflow', () => {
    const largeAmounts = [
      'Datum,Transaktion,Kategori,Belopp,Saldo',
      '2024-01-15,BIG TRANSFER,,"1 500 000,00","2 000 000,00"',
    ].join('\n')

    const result = parseBankFile(largeAmounts, 'nordea.csv')

    expect(result.transactions).toHaveLength(1)
    expect(result.transactions[0].amount).toBe(1500000)
    expect(result.transactions[0].balance).toBe(2000000)
  })

  it('handles zero amounts', () => {
    const zeroAmount = [
      'Datum,Transaktion,Kategori,Belopp,Saldo',
      '2024-01-15,FEE REVERSAL,,"0,00","5 000,00"',
    ].join('\n')

    const result = parseBankFile(zeroAmount, 'nordea.csv')

    expect(result.transactions).toHaveLength(1)
    expect(result.transactions[0].amount).toBe(0)
  })
})