achat-maison-albi-fr/src/components/Meta.astro

---
import { getImage } from "astro:assets";
import { OG, SEO, SITE } from "@/data_files/constants";
import faviconSvgSrc from "@/images/icon.svg";
import faviconSrc from "@/images/icon.png";

// Default properties for the Meta component. These values are used if props are not provided.
// 'meta' sets a default description meta tag to describe the page content.
// 'structuredData' defines default structured data in JSON-LD format to enhance search engine understanding of the page (for SEO purposes).
const defaultProps = {
  meta: SITE.description,
  structuredData: SEO.structuredData,
};

// Extract props with default values assigned from defaultProps. Values can be overridden when the component is used.
// For example:
// <MainLayout title="Custom Title" meta="Custom description." />
const { meta = defaultProps.meta, structuredData = defaultProps.structuredData } = Astro.props;

// Define the metadata for your website and individual pages
const URL = `${Astro.site}`; // Set the website URL in astro.config.mjs
const author = SITE.author;
const ogTitle = OG.title;
const ogDescription = OG.description;
const socialImageRes = await getImage({ src: OG.image, width: 1200, height: 600 });
const socialImage = Astro.url.origin + socialImageRes.src; // Get the full URL of the image (https://stackoverflow.com/a/9858694)

// Generate and optimize the favicon images
const faviconSvg = await getImage({
  src: faviconSvgSrc,
  format: 'svg',
});

const appleTouchIcon = await getImage({
  src: faviconSrc,
  width: 180,
  height: 180,
  format: 'png',
});

---

<!-- Inject structured data into the page if provided. This data is formatted as JSON-LD, a method recommended by Google for structured data pass:
     https://developers.google.com/search/docs/advanced/structured-data/intro-structured-data -->
{structuredData && (
  <script type="application/ld+json" set:html={JSON.stringify(structuredData)}></script>
)}
<!-- Define the character set, description, author, and viewport settings -->
<meta charset="utf-8" />
<meta content={meta} name="description" />
<meta name="web_author" content={author} />
<meta
  name="viewport"
  content="width=device-width, initial-scale=1.0, maximum-scale=5.0, minimum-scale=1.0"
/>
<meta http-equiv="X-UA-Compatible" content="ie=edge" />

<!-- Facebook Meta Tags -->
<meta property="og:locale" content="en_US" />
<meta property="og:url" content={URL} />
<meta property="og:type" content="website" />
<meta property="og:title" content={ogTitle} />
<meta property="og:site_name" content={SITE.title} />
<meta property="og:description" content={ogDescription} />
<meta property="og:image" content={socialImage} />
<meta content="1200" property="og:image:width" />
<meta content="600" property="og:image:height" />
<meta content="image/png" property="og:image:type" />

<!-- Twitter Meta Tags -->
<meta name="twitter:card" content="summary_large_image" />
<meta property="twitter:domain" content={URL} />
<meta property="twitter:url" content={URL} />
<meta name="twitter:title" content={ogTitle} />
<meta name="twitter:description" content={ogDescription} />
<meta name="twitter:image" content={socialImage} />

<!-- Links to the webmanifest and sitemap -->
<link rel="manifest" href="/manifest.json" />
<!-- https://docs.astro.build/en/guides/integrations-guide/sitemap/ -->
<link rel="sitemap" href="/sitemap-index.xml" />

<!-- Links for favicons -->
<link href="/favicon.ico" rel="icon" sizes="any" type="image/x-icon" />
<link href={faviconSvg.src} rel="icon" type="image/svg+xml" sizes="any" />
<meta name="mobile-web-app-capable" content="yes" />
<link href={appleTouchIcon.src} rel="apple-touch-icon" />
<link href={appleTouchIcon.src} rel="shortcut icon" />
<!-- Set theme color -->
<meta name="theme-color" content="#facc15" />