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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,19 @@ | ||
| import { inject } from '@adonisjs/core' | ||
| import { HttpContext } from '@adonisjs/core/http' | ||
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|
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| import { PackagesFetcher } from '#services/packages_fetcher' | ||
| import { OgImageGenerator } from '#services/og_image/og_image_renderer' | ||
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| export default class OgImagesController { | ||
| @inject() | ||
| async handle( | ||
| { params, response }: HttpContext, | ||
| pkgFetcher: PackagesFetcher, | ||
| ogImageGenerator: OgImageGenerator, | ||
| ) { | ||
| const { package: pkg } = await pkgFetcher.fetchPackage(params.name) | ||
| const img = await ogImageGenerator.generate(pkg.name, pkg.description) | ||
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| return response.type('image/png').send(img) | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,146 @@ | ||
| import satori from 'satori' | ||
| import { html } from 'satori-html' | ||
| import { Resvg } from '@resvg/resvg-js' | ||
| import { readFile } from 'node:fs/promises' | ||
| import app from '@adonisjs/core/services/app' | ||
| import cache from '@adonisjs/cache/services/main' | ||
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| import { adonisLogo } from './adonis_logo.js' | ||
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| export class OgImageGenerator { | ||
| #buildMarkup(name: string, description: string) { | ||
| return html` | ||
| <div | ||
| style=" | ||
| display: flex; | ||
| height: 100%; | ||
| width: 100%; | ||
| align-items: center; | ||
| justify-content: center; | ||
| flex-direction: column; | ||
| background-color: #212121; | ||
| font-size: 50; | ||
| padding: 50px 80px; | ||
| letter-spacing: -2; | ||
| font-weight: 800; | ||
| text-align: left; | ||
| " | ||
| > | ||
| <!-- Radial gradient at right --> | ||
| <div | ||
| style=" | ||
| background: radial-gradient(circle, rgba(88,82,213,0.2) 0%, rgba(28,28,28,0) 45%); | ||
| width: 3000; | ||
| height: 1200; | ||
| top: -200; | ||
| right: -100; | ||
| position: absolute; | ||
| display: flex; | ||
| " | ||
| /> | ||
| <!-- Radial gradient at left --> | ||
| <div | ||
| style=" | ||
| background: radial-gradient(circle, rgba(120,82,213,0.5) 0%, rgba(28,28,28,0) 45%); | ||
| width: 3000; | ||
| height: 1200; | ||
| top: -600; | ||
| left: -100; | ||
| position: absolute; | ||
| display: flex; | ||
| " | ||
| /> | ||
| <!-- Adonis logo at top right --> | ||
| <img | ||
| style=" | ||
| position: absolute; | ||
| right: -30; | ||
| top: -20; | ||
| transform: rotate(-25deg); | ||
| " | ||
| src="${adonisLogo}" | ||
| width="400" | ||
| /> | ||
| <!-- Adonis logo at bottom left --> | ||
| <img | ||
| style=" | ||
| position: absolute; | ||
| left: -90; | ||
| bottom: -20; | ||
| transform: rotate(20deg); | ||
| " | ||
| src="${adonisLogo}" | ||
| width="400" | ||
| /> | ||
| <!-- Package name --> | ||
| <div | ||
| style=" | ||
| margin-top: 0; | ||
| color: white; | ||
| font-size: 60; | ||
| font-family: 'PolySans', sans-serif; | ||
| " | ||
| > | ||
| ${name} | ||
| </div> | ||
| <!-- Package description --> | ||
| <div | ||
| style=" | ||
| marginTop: 20; | ||
| color: #A0A0A0; | ||
| fontWeight: 100; | ||
| font-size: 30; | ||
| text-align: center; | ||
| line-height: 1.4; | ||
| letter-spacing: -1.2; | ||
| max-width: 60%; | ||
| font-family: 'Graphik', sans-serif; | ||
| " | ||
| > | ||
| ${description} | ||
| </div> | ||
| </div> | ||
| ` | ||
| } | ||
|
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| async #generateSvg(name: string, description: string) { | ||
| const markup = this.#buildMarkup(name, description) | ||
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| const fontsPath = app.makePath('resources/assets/fonts') | ||
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| const fontPath1 = `${fontsPath}/Graphik-Regular.ttf` | ||
| const fontPath2 = `${fontsPath}/PolySans-Median.ttf` | ||
| const svg = await satori(markup, { | ||
| width: 1200, | ||
| height: 630, | ||
| fonts: [ | ||
| { name: 'Graphik', data: await readFile(fontPath1), weight: 700, style: 'normal' }, | ||
| { name: 'PolySans', data: await readFile(fontPath2), weight: 400, style: 'normal' }, | ||
| ], | ||
| }) | ||
|
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| return svg | ||
| } | ||
|
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| /** | ||
| * Generate a new OpenGraph image for the given package name and description | ||
| * | ||
| * - First, convert HTML to SVG markup using Satori | ||
| * - Then, convert SVG to PNG using Resvg | ||
| * - Finally, cache the result so that we don't have to generate it again and again | ||
| */ | ||
| async generate(name: string, description: string) { | ||
| const base64Og = await cache.use('ogImage').getOrSet(`og-image:${name}`, async () => { | ||
| console.log('Generating new OG image for %s', name) | ||
| const svg = await this.#generateSvg(name, description) | ||
| return new Resvg(svg).render().asPng().toString('base64') | ||
| }) | ||
|
|
||
| return Buffer.from(base64Og, 'base64') | ||
| } | ||
| } |
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