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const fsp = require('fs').promises | |
async function purge(dir, pictureId) { | |
const entries = await fsp.readdir(dir, { withFileTypes: true }) | |
let n = 0 | |
await Promise.all(entries.map(async (e) => { | |
const path = `${dir}/${e.name}` | |
if (e.isDirectory()) { | |
n += await purge(path, pictureId) | |
} else if (e.isFile()) { | |
const buf = await fsp.readFile(path) | |
const idOnCache = buf.slice(364, 396).toString() | |
if (idOnCache === pictureId) { | |
const copy = Buffer.from(buf) | |
copy.writeIntLE(Math.floor(new Date() / 1000) - 1, 8, 6) | |
copy.writeIntLE(0, 32, 6) | |
await fsp.writeFile(path, copy) | |
n++ | |
} | |
} | |
})) | |
return n | |
} | |
async function handler(r) { | |
const pictureId = r.uri.slice(r.uri.lastIndexOf('/') + 1) | |
const n = await purge('/var/cache/nginx/kakeru', pictureId) | |
r.return(200, `${n}`) | |
} | |
export default {handler} |
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