| import React from 'react' |
| import Helmet from 'react-helmet' |
| import { useStaticQuery, graphql } from 'gatsby' |
| import { IGatsbyImageData, getSrc } from 'gatsby-plugin-image' |
| |
| import { useLocation } from '@gatsbyjs/reach-router' |
|
|
| interface Meta { |
| name: string |
| content: string |
| } |
|
|
| interface SeoProps { |
| title: string |
| description?: string |
| image?: IGatsbyImageData |
| lang?: string |
| meta?: Meta[] |
| keywords?: string[] |
| } |
|
|
| interface SiteData { |
| site: { |
| siteMetadata: { |
| title: string |
| description: string |
| siteUrl: string |
| og: { |
| siteName: string |
| twitterCreator: string |
| } |
| } |
| } |
| } |
|
|
| export const Seo = ({ |
| title: _title, |
| description: _description, |
| image, |
| lang = 'en', |
| keywords, |
| }: SeoProps) => { |
| const location = useLocation() |
|
|
| const { site } = useStaticQuery<SiteData>(graphql` |
| query SiteMetaData { |
| site { |
| siteMetadata { |
| title |
| description |
| siteUrl |
| og { |
| siteName |
| twitterCreator |
| } |
| } |
| } |
| } |
| `) |
|
|
| const title = _title || site.siteMetadata.title |
| const description = _description || site.siteMetadata.description |
|
|
| const metas: Meta[] = [ |
| |
| { |
| name: 'og:title', |
| content: title, |
| }, |
| { |
| name: 'twitter:title', |
| content: title, |
| }, |
| |
| { |
| name: 'description', |
| content: description, |
| }, |
| { |
| name: 'og:description', |
| content: description, |
| }, |
| { |
| name: 'twitter:description', |
| content: description, |
| }, |
| |
| { |
| name: 'og:type', |
| content: 'website', |
| }, |
| { |
| name: 'og:site_name', |
| content: site.siteMetadata.og.siteName, |
| }, |
| { |
| name: 'twitter:card', |
| content: 'summary_large_image', |
| }, |
| { |
| name: 'twitter:creator', |
| content: site.siteMetadata.og.twitterCreator, |
| }, |
| { |
| name: 'og:url', |
| content: `${site.siteMetadata.siteUrl}${location.pathname}`, |
| }, |
| ] |
|
|
| if (keywords) { |
| metas.push({ |
| name: `keywords`, |
| content: keywords.join(`, `), |
| }) |
| } |
|
|
| if (image) { |
| metas.push({ |
| name: 'og:image:width', |
| content: `${image.width}`, |
| }) |
| metas.push({ |
| name: 'og:image:height', |
| content: `${image.height}`, |
| }) |
|
|
| const imageSrc = `${site.siteMetadata.siteUrl}${getSrc(image)!}` |
| metas.push({ |
| name: 'og:image:secure_url', |
| content: imageSrc, |
| }) |
| metas.push({ |
| name: 'twitter:image', |
| content: imageSrc, |
| }) |
| } |
|
|
| return ( |
| <Helmet titleTemplate={`%s | ${site.siteMetadata.title}`}> |
| <html lang={lang} /> |
| <meta charSet="utf-8" /> |
| <title>{title}</title> |
| {metas.map(meta => ( |
| <meta key={meta.name} name={meta.name} content={meta.content} /> |
| ))} |
| </Helmet> |
| ) |
| } |
|
|
