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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,102 @@ | ||
| import fs from 'node:fs' | ||
| import { extname, resolve } from 'node:path' | ||
| import { createHash } from 'node:crypto' | ||
| import type { NextApiHandler } from 'next' | ||
| import satori from 'satori' | ||
| import { sha256 } from 'ohash' | ||
| import sharp from 'sharp' | ||
| import { clientConfig } from '@/lib/server/config' | ||
|
|
||
| const NOTO_SANS_SC = fs.readFileSync(resolve(process.cwd(), 'assets/fonts/NotoSansSC-Bold.otf')) | ||
| const NOTO_SERIF_SC = fs.readFileSync(resolve(process.cwd(), 'assets/fonts/NotoSerifSC-Bold.otf')) | ||
| const fonts = [ | ||
| clientConfig.font === 'serif' | ||
| ? { name: 'Noto Serif SC', data: NOTO_SERIF_SC } | ||
| : { name: 'Noto Sans SC', data: NOTO_SANS_SC }, | ||
| ] | ||
|
|
||
| const WIDTH = 1200 | ||
| const HEIGHT = 600 | ||
|
|
||
| type Params = { | ||
| title: string | ||
| } | ||
|
|
||
| export default (async function handler (req, res) { | ||
| const { title } = req.query as Partial<Params> | ||
|
|
||
| if (!title) return res.status(204).end() | ||
|
|
||
| const hash = sha256(title) | ||
| const logo = await resolveLogo() | ||
| const { author, email } = clientConfig | ||
| const emailHash = email && createHash('md5').update(email).digest('hex').trim().toLowerCase() | ||
|
|
||
| const svg = await satori( | ||
| <div style={{ | ||
| display: 'flex', | ||
| justifyContent: 'center', | ||
| alignItems: 'center', | ||
| width: '100%', | ||
| height: '100%', | ||
| backgroundColor: '#000', | ||
| backgroundImage: `linear-gradient(153.4349488229deg, #${hash.slice(0, 6)}80, #${hash.slice(6, 12)}80)`, | ||
| backgroundSize: '100% 162%', | ||
| }}> | ||
| {logo && ( | ||
| <img | ||
| src={logo} | ||
| width={HEIGHT / 10} | ||
| height={HEIGHT / 10} | ||
| style={{ position: 'absolute', top: '10vh', right: '10vw', boxShadow: '1px 2px 4px #0004' }} | ||
| /> | ||
| )} | ||
| {author && ( | ||
| <div style={{ | ||
| position: 'absolute', | ||
| bottom: '10vh', | ||
| left: '10vw', | ||
| display: 'flex', | ||
| alignItems: 'center', | ||
| fontSize: '40px', | ||
| lineHeight: '1.2', | ||
| color: '#fff', | ||
| textShadow: '1px 2px 4px #0004', | ||
| }}> | ||
| <img | ||
| src={`https://gravatar.com/avatar/${emailHash}`} | ||
| width={48} | ||
| height={48} | ||
| style={{ marginRight: '0.25em', borderRadius: 9999, boxShadow: '1px 2px 4px #0004' }} | ||
| /> | ||
| <div>{author}</div> | ||
| </div> | ||
| )} | ||
| <div style={{ | ||
| maxWidth: '80vw', | ||
| fontSize: '60px', | ||
| fontWeight: 'bold', | ||
| textAlign: 'center', | ||
| color: '#fff', | ||
| textShadow: '1px 2px 4px #0004', | ||
| }}>{title}</div> | ||
| </div>, | ||
| { width: WIDTH, height: HEIGHT, fonts }, | ||
| ) | ||
| const png = await sharp(Buffer.from(svg, 'ascii')).toFormat('png').toBuffer() | ||
| res.setHeader('Content-Type', 'image/png') | ||
| res.send(png) | ||
| } as NextApiHandler) | ||
|
|
||
| async function resolveLogo () { | ||
| const { logo } = clientConfig | ||
|
|
||
| if (!logo) return | ||
|
|
||
| const raw = fs.readFileSync(resolve(process.cwd(), 'public', logo)) | ||
| const format = extname(logo).slice(1) | ||
| return format === 'svg' | ||
| // Nested SVG will not be rendered due to tech limitations | ||
| ? `data:image/png;base64,${(await sharp(raw).toFormat('png').toBuffer()).toString('base64')}` | ||
| : `data:image/${format};base64,${raw.toString('base64')}` | ||
| } |
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