import { describe, it, expect } from 'vitest';
import {
  buildCategoryNameLookup,
  decodeUtf8WithWarning,
  extractKmlPlacemarkNodes,
  parseKmlPointCoordinates,
  parsePlacemarkNode,
  resolveCategoryIdForFolder,
  sanitizeKmlDescription,
  stripXmlNamespaces,
} from '../../../src/services/kmlImport';

describe('kmlImportUtils', () => {
  it('strips KML namespaces and prefixes', () => {
    const xml = '<kml xmlns="http://www.opengis.net/kml/2.2"><kml:Document><kml:Placemark /></kml:Document></kml>';
    const stripped = stripXmlNamespaces(xml);
    expect(stripped).not.toContain('xmlns');
    expect(stripped).toContain('<Document>');
    expect(stripped).toContain('<Placemark');
  });

  it('sanitizes HTML descriptions with br to newline', () => {
    const input = 'Line 1<br>Line <b>2</b> &amp; more';
    const output = sanitizeKmlDescription(input);
    expect(output).toBe('Line 1\nLine 2 & more');
  });

  it('parses KML coordinate order lng,lat,alt', () => {
    const parsed = parseKmlPointCoordinates('13.4050,52.5200,15');
    expect(parsed).toEqual({ lat: 52.52, lng: 13.405 });
  });

  it('extracts placemarks from nested folders', () => {
    const root = {
      Document: {
        Folder: {
          name: 'Parent',
          Folder: {
            name: 'Child',
            Placemark: { name: 'Nested', Point: { coordinates: '13.4,52.5,0' } },
          },
        },
      },
    };

    const nodes = extractKmlPlacemarkNodes(root);
    expect(nodes).toHaveLength(1);
    expect(nodes[0].folderName).toBe('Child');

    const parsed = parsePlacemarkNode(nodes[0]);
    expect(parsed.name).toBe('Nested');
    expect(parsed.lat).toBe(52.5);
    expect(parsed.lng).toBe(13.4);
  });

  it('builds exact case-insensitive category lookup', () => {
    const lookup = buildCategoryNameLookup([
      { id: 3, name: 'Museums' },
      { id: 4, name: 'Parks' },
    ]);

    expect(resolveCategoryIdForFolder('museums', lookup)).toBe(3);
    expect(resolveCategoryIdForFolder('Museum', lookup)).toBeNull();
    expect(resolveCategoryIdForFolder('parks', lookup)).toBe(4);
  });

  it('returns warning for non-UTF8 payload', () => {
    const buffer = Buffer.concat([
      Buffer.from('<?xml version="1.0"?><kml><Document><Placemark><name>Caf'),
      Buffer.from([0xe9]),
      Buffer.from('</name></Placemark></Document></kml>'),
    ]);

    const decoded = decodeUtf8WithWarning(buffer);
    expect(decoded.warning).toContain('not valid UTF-8');
    expect(decoded.text).toContain('<kml>');
  });
});