68 lines
1.4 KiB
JavaScript
68 lines
1.4 KiB
JavaScript
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// for Node.js interpret
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const { default: DriveFile, getGridFSBucket } = require('../../built/api/models/drive-file')
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const { default: zip } = require('@prezzemolo/zip')
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const _gm = require('gm');
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const gm = _gm.subClass({
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imageMagick: true
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});
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const migrate = doc => new Promise(async (res, rej) => {
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const bucket = await getGridFSBucket();
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const readable = bucket.openDownloadStream(doc._id);
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gm(readable)
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.setFormat('ppm')
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.resize(1, 1)
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.toBuffer(async (err, buffer) => {
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if (err) rej(err);
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const r = buffer.readUInt8(buffer.length - 3);
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const g = buffer.readUInt8(buffer.length - 2);
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const b = buffer.readUInt8(buffer.length - 1);
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const result = await DriveFile.update(doc._id, {
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$set: {
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'metadata.properties.average_color': [r, g, b]
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}
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})
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res(result.ok === 1);
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});
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});
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async function main() {
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const query = {
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contentType: {
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$in: [
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'image/png',
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'image/jpeg'
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]
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}
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}
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const count = await DriveFile.count(query);
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const dop = Number.parseInt(process.argv[2]) || 5
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const idop = ((count - (count % dop)) / dop) + 1
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return zip(
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1,
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async (time) => {
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console.log(`${time} / ${idop}`)
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const doc = await DriveFile.find(query, {
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limit: dop, skip: time * dop
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})
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return Promise.all(doc.map(migrate))
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},
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idop
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).then(a => {
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const rv = []
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a.forEach(e => rv.push(...e))
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return rv
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})
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}
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main().then(console.dir).catch(console.error)
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