const {
  parseNumber,
  isRentalDuplicate,
  parseWorkbook
} = require('../src/services/smartPackageExcelImportService');
const XLSX = require('xlsx');
const fs = require('fs');
const os = require('os');
const path = require('path');

describe('SmartPackageExcelImportService', () => {
  test.each([
    ['1,007.97 kr.', 1007.97],
    ['1.007,97 kr.', 1007.97],
    ['600.00 kr.', 600],
    ['0.20', 0.2],
    [null, 0]
  ])('parses Excel number %p', (value, expected) => {
    expect(parseNumber(value)).toBe(expected);
  });

  test('removes zero-price rental duplicates covered by Byggeplads', () => {
    const buildingSite = [
      { name: 'Leje af minigraver 1,5-2,0 ton' },
      { name: 'Mandskabsvogn 4 personer' },
      { name: 'Køreplader i stål' },
      { name: 'Leje Affaldscontainer åben 20 m³' }
    ];

    expect(isRentalDuplicate({ name: 'Minigraver 1,8 ton', standardPrice: 0 }, buildingSite)).toBe(true);
    expect(isRentalDuplicate({ name: 'Mandskabsvogn 4 pers.', standardPrice: 0 }, buildingSite)).toBe(true);
    expect(isRentalDuplicate({ name: 'Køreplader stål', standardPrice: 0 }, buildingSite)).toBe(true);
    expect(isRentalDuplicate({ name: '20 m3 åben', standardPrice: 0 }, buildingSite)).toBe(true);
    expect(isRentalDuplicate({ name: '10 m3 åben', standardPrice: 0 }, buildingSite)).toBe(false);
    expect(isRentalDuplicate({ name: '20 m3 lukket', standardPrice: 0 }, buildingSite)).toBe(false);
  });

  test('keeps priced and non-overlapping rental packages', () => {
    const buildingSite = [{ name: 'Leje af saxlift 6 m' }];

    expect(isRentalDuplicate({ name: 'Saxlift 6 m', standardPrice: 320 }, buildingSite)).toBe(false);
    expect(isRentalDuplicate({ name: 'Saxlift 10 m', standardPrice: 0 }, buildingSite)).toBe(false);
  });

  test('maps an unknown workbook layout to canonical SmartPackage fields', () => {
    const directory = fs.mkdtempSync(path.join(os.tmpdir(), 'excel-map-'));
    const filePath = path.join(directory, 'custom.xlsx');
    const workbook = XLSX.utils.book_new();
    XLSX.utils.book_append_sheet(workbook, XLSX.utils.json_to_sheet([
      { Ydelse: 'Opsætning af skur', Gruppe: 'Byggeplads', Pris: '1.250,00', Måleenhed: 'stk.' }
    ]), 'Ark 1');
    XLSX.writeFile(workbook, filePath);

    const parsed = parseWorkbook(filePath, {
      sheets: [{
        sourceSheet: 'Ark 1', targetSheet: 'Byggeplads', columns: [
          { source: 'Ydelse', target: 'name' },
          { source: 'Gruppe', target: 'category' },
          { source: 'Pris', target: 'unitPrice' },
          { source: 'Måleenhed', target: 'unit' }
        ]
      }]
    });

    expect(parsed.packages).toHaveLength(1);
    expect(parsed.packages[0]).toMatchObject({ name: 'Opsætning af skur', effectivePrice: 1250, unit: 'stk.' });
    fs.rmSync(directory, { recursive: true, force: true });
  });

  test('rejects mappings without a name column', () => {
    const directory = fs.mkdtempSync(path.join(os.tmpdir(), 'excel-map-'));
    const filePath = path.join(directory, 'custom.xlsx');
    const workbook = XLSX.utils.book_new();
    XLSX.utils.book_append_sheet(workbook, XLSX.utils.json_to_sheet([{ Pris: 100 }]), 'Data');
    XLSX.writeFile(workbook, filePath);
    expect(() => parseWorkbook(filePath, {
      sheets: [{ sourceSheet: 'Data', targetSheet: 'Byggeplads', columns: [{ source: 'Pris', target: 'unitPrice' }] }]
    })).toThrow('mangler pakkenavn');
    fs.rmSync(directory, { recursive: true, force: true });
  });

  test('preserves the real Excel sheet and row when blank rows occur', () => {
    const directory = fs.mkdtempSync(path.join(os.tmpdir(), 'excel-row-'));
    const filePath = path.join(directory, 'custom.xlsx');
    const workbook = XLSX.utils.book_new();
    const sheet = XLSX.utils.aoa_to_sheet([
      ['Ydelse', 'Pris'],
      [],
      ['Skurvogn', 750]
    ]);
    XLSX.utils.book_append_sheet(workbook, sheet, 'Importdata');
    XLSX.writeFile(workbook, filePath);

    const parsed = parseWorkbook(filePath, {
      sheets: [{
        sourceSheet: 'Importdata',
        targetSheet: 'Udlejning',
        columns: [
          { source: 'Ydelse', target: 'name' },
          { source: 'Pris', target: 'standardPrice' }
        ]
      }]
    });

    expect(parsed.packages[0]).toMatchObject({
      sourceSheet: 'Udlejning',
      excelSheet: 'Importdata',
      sourceRow: 3
    });
    fs.rmSync(directory, { recursive: true, force: true });
  });
});