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[optim] extract cache as component

This commit is contained in:
Avris 2021-06-17 23:20:40 +02:00
parent 70795a11fa
commit 2ee5d89e5f
2 changed files with 70 additions and 61 deletions
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114
server/routes/banner.js
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@ -6,7 +6,8 @@ import avatar from '../avatar';
import {buildPronoun, parsePronouns} from "../../src/buildPronoun"; import {buildPronoun, parsePronouns} from "../../src/buildPronoun";
import {loadTsv} from "../../src/tsv"; import {loadTsv} from "../../src/tsv";
import {handleErrorAsync} from "../../src/helpers"; import {handleErrorAsync} from "../../src/helpers";
import fs from 'fs'; import cache from "../../src/cache";
import fs from "fs";
const translations = loadSuml('translations'); const translations = loadSuml('translations');
@ -37,82 +38,73 @@ router.get('/banner/:pronounName*.png', handleErrorAsync(async (req, res) => {
const pronounName = req.params.pronounName + req.params[0]; const pronounName = req.params.pronounName + req.params[0];
const cacheDir = `${__dirname}/../../cache/banner`; const result = await cache('banner', `${pronounName}.png`, 24 * 60, async () => {
fs.mkdirSync(cacheDir, { recursive: true }); registerFont('static/fonts/quicksand-v21-latin-ext_latin-regular.ttf', {family: 'Quicksand', weight: 'regular'});
const cacheFilename = `${cacheDir}/${pronounName}.png`; registerFont('static/fonts/quicksand-v21-latin-ext_latin-700.ttf', {family: 'Quicksand', weight: 'bold'});
if (fs.existsSync(cacheFilename) && fs.statSync(cacheFilename).mtimeMs >= (new Date() - 24*60*60*1000)) {
return res.set('content-type', mime).send(fs.readFileSync(cacheFilename));
}
const saveToCacheAndReturn = (canvas) => { const canvas = createCanvas(width, height)
const buffer = canvas.toBuffer(mime); const context = canvas.getContext('2d')
fs.writeFileSync(cacheFilename, buffer);
return res.set('content-type', mime).send(buffer);
}
registerFont('static/fonts/quicksand-v21-latin-ext_latin-regular.ttf', { family: 'Quicksand', weight: 'regular'}); const bg = await loadImage('static/bg.png');
registerFont('static/fonts/quicksand-v21-latin-ext_latin-700.ttf', { family: 'Quicksand', weight: 'bold'}); context.drawImage(bg, 0, 0, width, height);
const canvas = createCanvas(width, height) const fallback = async _ => {
const context = canvas.getContext('2d') const logo = await loadImage('node_modules/@fortawesome/fontawesome-pro/svgs/light/tags.svg');
leftRatio = 5;
const bg = await loadImage('static/bg.png'); context.drawImage(logo, width / leftRatio - imageSize / 2, height / 2 - imageSize / 1.25 / 2, imageSize, imageSize / 1.25);
context.drawImage(bg, 0, 0, width, height); context.font = `regular ${translations.title.length < 10 ? 120 : translations.title.length < 14 ? 80 : 72}pt Quicksand`;
context.fillText(translations.title, width / leftRatio + imageSize / 1.5, height / 2 + (translations.title.length < 10 ? 48 : translations.title.length < 14 ? 24 : 24));
const fallback = async _ => {
const logo = await loadImage('node_modules/@fortawesome/fontawesome-pro/svgs/light/tags.svg');
leftRatio = 5;
context.drawImage(logo, width / leftRatio - imageSize / 2, height / 2 - imageSize / 1.25 / 2, imageSize, imageSize / 1.25);
context.font = `regular ${translations.title.length < 10 ? 120 : translations.title.length < 14 ? 80 : 72}pt Quicksand`;
context.fillText(translations.title, width / leftRatio + imageSize / 1.5, height / 2 + (translations.title.length < 10 ? 48 : translations.title.length < 14 ? 24 : 24));
}
if (pronounName.startsWith('@')) {
const user = await req.db.get(SQL`SELECT id, username, email, avatarSource FROM users WHERE username=${pronounName.substring(1)}`);
if (!user) {
await fallback();
return saveToCacheAndReturn(canvas);
} }
const avatarImage = await loadImage(await avatar(req.db, user)); if (pronounName.startsWith('@')) {
const user = await req.db.get(SQL`SELECT id, username, email, avatarSource FROM users WHERE username=${pronounName.substring(1)}`);
if (!user) {
await fallback();
return canvas.toBuffer(mime);
}
drawCircle(context, avatarImage, width / leftRatio - imageSize / 2, height / 2 - imageSize / 2, imageSize); const avatarImage = await loadImage(await avatar(req.db, user));
context.font = `regular 48pt Quicksand` drawCircle(context, avatarImage, width / leftRatio - imageSize / 2, height / 2 - imageSize / 2, imageSize);
context.fillText('@' + user.username, width / leftRatio + imageSize, height / 2)
const logo = await loadImage('static/favicon.svg'); context.font = `regular 48pt Quicksand`
context.fillText('@' + user.username, width / leftRatio + imageSize, height / 2)
context.font = 'regular 24pt Quicksand' const logo = await loadImage('static/favicon.svg');
context.fillStyle = '#C71585';
const logoSize = 24 * 1.25;
context.drawImage(logo, width / leftRatio + imageSize, height / 2 + logoSize - 4, logoSize, logoSize / 1.25)
context.fillText(translations.title, width / leftRatio + imageSize + 36, height / 2 + 48);
return saveToCacheAndReturn(canvas); context.font = 'regular 24pt Quicksand'
} context.fillStyle = '#C71585';
const logoSize = 24 * 1.25;
context.drawImage(logo, width / leftRatio + imageSize, height / 2 + logoSize - 4, logoSize, logoSize / 1.25)
context.fillText(translations.title, width / leftRatio + imageSize + 36, height / 2 + 48);
const pronoun = buildPronoun( return canvas.toBuffer(mime);
parsePronouns(loadTsv(__dirname + '/../../data/pronouns/pronouns.tsv')), }
pronounName,
);
const logo = await loadImage('node_modules/@fortawesome/fontawesome-pro/svgs/light/tags.svg'); const pronoun = buildPronoun(
parsePronouns(loadTsv(__dirname + '/../../data/pronouns/pronouns.tsv')),
pronounName,
);
if (!pronoun && pronounName !== req.config.pronouns.any) { const logo = await loadImage('node_modules/@fortawesome/fontawesome-pro/svgs/light/tags.svg');
await fallback();
return saveToCacheAndReturn(canvas);
}
context.drawImage(logo, width / leftRatio - imageSize / 2, height / 2 - imageSize / 1.25 / 2, imageSize, imageSize / 1.25) if (!pronoun && pronounName !== req.config.pronouns.any) {
context.font = 'regular 48pt Quicksand' await fallback();
context.fillText(translations.pronouns.intro + ':', width / leftRatio + imageSize / 1.5, height / 2 - 36) return canvas.toBuffer(mime);
}
const pronounNameOptions = pronounName === req.config.pronouns.any ? [req.config.pronouns.any] : pronoun.nameOptions(); context.drawImage(logo, width / leftRatio - imageSize / 2, height / 2 - imageSize / 1.25 / 2, imageSize, imageSize / 1.25)
context.font = `bold ${pronounNameOptions.length <= 2 ? '70' : '36'}pt Quicksand` context.font = 'regular 48pt Quicksand'
context.fillText(pronounNameOptions.join('\n'), width / leftRatio + imageSize / 1.5, height / 2 + (pronounNameOptions.length <= 2 ? 72 : 24)); context.fillText(translations.pronouns.intro + ':', width / leftRatio + imageSize / 1.5, height / 2 - 36)
return saveToCacheAndReturn(canvas); const pronounNameOptions = pronounName === req.config.pronouns.any ? [req.config.pronouns.any] : pronoun.nameOptions();
context.font = `bold ${pronounNameOptions.length <= 2 ? '70' : '36'}pt Quicksand`
context.fillText(pronounNameOptions.join('\n'), width / leftRatio + imageSize / 1.5, height / 2 + (pronounNameOptions.length <= 2 ? 72 : 24));
return canvas.toBuffer(mime);
});
return res.set('content-type', mime).send(result);
})); }));
export default router; export default router;

17
src/cache.js Normal file
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@ -0,0 +1,17 @@
import fs from 'fs';
export default async (dir, filename, maxAgeMinutes, generator) => {
const cacheDir = `${__dirname}/../cache/${dir}`
fs.mkdirSync(cacheDir, { recursive: true });
const cacheFilename = `${cacheDir}/${filename}`;
if (fs.existsSync(cacheFilename) && fs.statSync(cacheFilename).mtimeMs >= (new Date() - maxAgeMinutes*60*1000)) {
return fs.readFileSync(cacheFilename);
}
const result = await generator();
fs.writeFileSync(cacheFilename, result);
return result;
}