import { buildMetaTags, buildRobotsContent, validateTitle, toSlug } from '@power-seo/core';

const tags = buildMetaTags({
  title: 'My Page',
  description: 'Page description',
  robots: { index: true, follow: true },
});
const robots = buildRobotsContent({ index: false, maxSnippet: 150 }); // → "noindex, max-snippet:150"
const valid = validateTitle('My Page Title'); // { valid: true, length: 14, pixelWidth: 95 }
const slug = toSlug('My Blog Post!'); // → "my-blog-post"

import {
  buildMetaTags,
  buildLinkTags,
  buildOpenGraphTags,
  buildTwitterTags,
  buildHreflangTags,
} from '@power-seo/core';

const meta = buildMetaTags({
  title: 'My Page',
  description: 'Page description',
  robots: { index: true, follow: true },
});

const links = buildLinkTags({ canonical: 'https://example.com/page' });

const og = buildOpenGraphTags({
  title: 'My Page',
  description: 'Page description',
  type: 'website',
  url: 'https://example.com',
  images: [{ url: 'https://example.com/og.jpg', width: 1200, height: 630 }],
});

const twitter = buildTwitterTags({
  card: 'summary_large_image',
  site: '@mysite',
  title: 'My Page',
  description: 'Page description',
  image: 'https://example.com/twitter.jpg',
});

const hreflang = buildHreflangTags([
  { hrefLang: 'en', href: 'https://example.com/page' },
  { hrefLang: 'fr', href: 'https://fr.example.com/page' },
  { hrefLang: 'x-default', href: 'https://example.com/page' },
]);

import { buildRobotsContent, parseRobotsContent } from '@power-seo/core';

// Build robots meta content string
buildRobotsContent({ index: true, follow: true });
// → "index, follow"

buildRobotsContent({ index: false, follow: false, noarchive: true });
// → "noindex, nofollow, noarchive"

buildRobotsContent({ index: true, maxSnippet: 150, maxImagePreview: 'large' });
// → "index, max-snippet:150, max-image-preview:large"

// Parse existing robots string back to config
parseRobotsContent('noindex, follow, max-image-preview:large');
// → { index: false, follow: true, maxImagePreview: 'large' }

import { applyTitleTemplate, createTitleTemplate } from '@power-seo/core';

applyTitleTemplate('Blog Post', '%s | My Site');
// → "Blog Post | My Site"

const template = createTitleTemplate({ separator: '|', suffix: 'My Site' });
template.apply('Blog Post'); // → "Blog Post | My Site"

import { validateTitle, validateMetaDescription, calculatePixelWidth } from '@power-seo/core';

validateTitle('My Page Title');
// { valid: true, length: 14, pixelWidth: 95, warnings: [] }

validateMetaDescription('A description of the page content for search engines.');
// { valid: true, length: 53, pixelWidth: 340, warnings: [] }

calculatePixelWidth('My Title'); // → 56

import {
  normalizeUrl,
  toSlug,
  stripTrackingParams,
  ensureTrailingSlash,
  removeTrailingSlash,
  isAbsoluteUrl,
  resolveCanonical,
} from '@power-seo/core';

normalizeUrl('https://example.com/PATH?utm_source=x'); // → "https://example.com/path"
toSlug('My Blog Post!'); // → "my-blog-post"
stripTrackingParams('https://example.com?utm_source=google&page=1'); // → "https://example.com?page=1"
ensureTrailingSlash('https://example.com/blog'); // → "https://example.com/blog/"
removeTrailingSlash('https://example.com/blog/'); // → "https://example.com/blog"
isAbsoluteUrl('https://example.com'); // → true
isAbsoluteUrl('/relative/path'); // → false

import {
  getTextStatistics,
  stripHtml,
  getWords,
  getSentences,
  countSyllables,
} from '@power-seo/core';

const stats = getTextStatistics(
  '<h1>Hello</h1><p>This is a sample paragraph with several words.</p>',
);
// { wordCount: 9, sentenceCount: 1, paragraphCount: 1, syllableCount: 14, avgWordsPerSentence: 9 }

stripHtml('<p>Hello <strong>world</strong></p>'); // → "Hello world"
getWords('Hello world'); // → ["Hello", "world"]
countSyllables('beautiful'); // → 3

import {
  calculateKeywordDensity,
  countKeywordOccurrences,
  analyzeKeyphraseOccurrences,
} from '@power-seo/core';

calculateKeywordDensity('react seo is great for react apps', 'react'); // → 0.1667 (16.67%)
countKeywordOccurrences('react seo is great for react apps', 'react'); // → 2

const analysis = analyzeKeyphraseOccurrences(
  'Best coffee shops in NYC. The coffee shops on Fifth Avenue are particularly good.',
  'coffee shops',
);
// { count: 2, density: 0.1538, positions: [1, 7], distribution: 'good' }

import {
  TITLE_MAX_LENGTH,
  META_DESCRIPTION_MAX_LENGTH,
  OG_IMAGE,
  KEYWORD_DENSITY,
  READABILITY,
} from '@power-seo/core';

TITLE_MAX_LENGTH; // 60
META_DESCRIPTION_MAX_LENGTH; // 158
OG_IMAGE.MIN_WIDTH; // 1200
OG_IMAGE.MIN_HEIGHT; // 630
KEYWORD_DENSITY.MIN; // 0.005 (0.5%)
KEYWORD_DENSITY.MAX; // 0.03  (3%)