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Zaimki/server/routes/banner.js

103 lines
4.2 KiB
JavaScript

import { Router } from 'express';
import SQL from 'sql-template-strings';
import {createCanvas, loadImage, registerFont} from "canvas";
import { loadSuml } from '../loader';
import avatar from '../avatar';
import {buildPronoun, parsePronouns} from "../../src/buildPronoun";
import {loadTsv} from "../../src/tsv";
const translations = loadSuml('translations');
const drawCircle = (context, image, x, y, size) => {
context.save();
context.beginPath();
context.arc(x + size / 2, y + size / 2, size / 2, 0, Math.PI * 2, true);
context.closePath();
context.clip();
context.drawImage(image, x, y, size, size)
context.beginPath();
context.arc(x, y, size / 2, 0, Math.PI * 2, true);
context.clip();
context.closePath();
context.restore();
}
const router = Router();
router.get('/banner/:pronounName*.png', async (req, res) => {
const pronounName = req.params.pronounName + req.params[0];
const width = 1200
const height = 600
const mime = 'image/png';
const imageSize = 200;
let leftRatio = 4;
registerFont('static/fonts/quicksand-v21-latin-ext_latin-regular.ttf', { family: 'Quicksand', weight: 'regular'});
registerFont('static/fonts/quicksand-v21-latin-ext_latin-700.ttf', { family: 'Quicksand', weight: 'bold'});
const canvas = createCanvas(width, height)
const context = canvas.getContext('2d')
const bg = await loadImage('static/bg.png');
context.drawImage(bg, 0, 0, width, height);
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 ${translations.title.length < 10 ? 120 : 80}pt Quicksand`;
context.fillText(translations.title, width / leftRatio + imageSize / 1.5, height / 2 + (translations.title.length < 10 ? 48 : 36));
}
if (pronounName.startsWith('@')) {
const user = await req.db.get(SQL`SELECT id, username, email, avatarSource FROM users WHERE username=${pronounName.substring(1)}`);
if (!user) {
await fallback();
return res.set('content-type', mime).send(canvas.toBuffer(mime));
}
const avatarImage = await loadImage(await avatar(req.db, user));
drawCircle(context, avatarImage, width / leftRatio - imageSize / 2, height / 2 - imageSize / 2, imageSize);
context.font = `regular 48pt Quicksand`
context.fillText('@' + user.username, width / leftRatio + imageSize, height / 2)
const logo = await loadImage('static/favicon.svg');
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);
return res.set('content-type', mime).send(canvas.toBuffer(mime));
}
const pronoun = buildPronoun(
parsePronouns(loadTsv(__dirname + '/../../data/pronouns/pronouns.tsv')),
pronounName,
);
const logo = await loadImage('node_modules/@fortawesome/fontawesome-pro/svgs/light/tags.svg');
if (!pronoun && pronounName !== req.config.pronouns.any) {
await fallback();
return res.set('content-type', mime).send(canvas.toBuffer(mime));
}
context.drawImage(logo, width / leftRatio - imageSize / 2, height / 2 - imageSize / 1.25 / 2, imageSize, imageSize / 1.25)
context.font = 'regular 48pt Quicksand'
context.fillText(translations.pronouns.intro + ':', width / leftRatio + imageSize / 1.5, height / 2 - 36)
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 res.set('content-type', mime).send(canvas.toBuffer(mime));
});
export default router;