102 lines
4.1 KiB
JavaScript
102 lines
4.1 KiB
JavaScript
import { Router } from 'express';
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import SQL from 'sql-template-strings';
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import {createCanvas, loadImage, registerFont} from "canvas";
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import translations from "../translations";
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import {gravatar} from "../../src/helpers";
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import {buildTemplate, parseTemplates} from "../../src/buildTemplate";
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import {loadTsv} from "../../src/tsv";
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const drawCircle = (context, image, x, y, size) => {
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context.save();
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context.beginPath();
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context.arc(x + size / 2, y + size / 2, size / 2, 0, Math.PI * 2, true);
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context.closePath();
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context.clip();
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context.drawImage(image, x, y, size, size)
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context.beginPath();
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context.arc(x, y, size / 2, 0, Math.PI * 2, true);
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context.clip();
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context.closePath();
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context.restore();
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}
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const router = Router();
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router.get('/banner/:templateName*.png', async (req, res) => {
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const templateName = req.params.templateName + req.params[0];
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const width = 1200
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const height = 600
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const mime = 'image/png';
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const imageSize = 200;
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let leftRatio = 4;
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registerFont('static/fonts/quicksand-v21-latin-ext_latin-regular.ttf', { family: 'Quicksand', weight: 'regular'});
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registerFont('static/fonts/quicksand-v21-latin-ext_latin-700.ttf', { family: 'Quicksand', weight: 'bold'});
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const canvas = createCanvas(width, height)
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const context = canvas.getContext('2d')
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context.fillStyle = '#fff'
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context.fillRect(0, 0, width, height)
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context.fillStyle = '#000'
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const fallback = async _ => {
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const logo = await loadImage('node_modules/@fortawesome/fontawesome-pro/svgs/light/tags.svg');
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leftRatio = 5;
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context.drawImage(logo, width / leftRatio - imageSize / 2, height / 2 - imageSize / 1.25 / 2, imageSize, imageSize / 1.25);
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context.font = 'regular 120pt Quicksand';
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context.fillText(translations.title, width / leftRatio + imageSize / 1.5, height / 2 + 48);
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}
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if (templateName.startsWith('@')) {
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const user = await req.db.get(SQL`SELECT username, email FROM users WHERE username=${templateName.substring(1)}`);
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if (!user) {
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await fallback();
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return res.set('content-type', mime).send(canvas.toBuffer(mime));
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}
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const avatar = await loadImage(gravatar(user, imageSize));
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drawCircle(context, avatar, width / leftRatio - imageSize / 2, height / 2 - imageSize / 2, imageSize);
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context.font = `regular 48pt Quicksand`
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context.fillText('@' + user.username, width / leftRatio + imageSize, height / 2)
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const logo = await loadImage('static/favicon.svg');
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context.font = 'regular 24pt Quicksand'
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context.fillStyle = '#C71585';
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const logoSize = 24 * 1.25;
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context.drawImage(logo, width / leftRatio + imageSize, height / 2 + logoSize - 4, logoSize, logoSize / 1.25)
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context.fillText(translations.title, width / leftRatio + imageSize + 36, height / 2 + 48);
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return res.set('content-type', mime).send(canvas.toBuffer(mime));
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}
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const template = buildTemplate(
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parseTemplates(loadTsv(__dirname + '/../../data/templates/templates.tsv')),
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templateName,
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);
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const logo = await loadImage('node_modules/@fortawesome/fontawesome-pro/svgs/light/tags.svg');
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if (!template && templateName !== 'dowolne') { // TODO
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await fallback();
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return res.set('content-type', mime).send(canvas.toBuffer(mime));
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}
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context.drawImage(logo, width / leftRatio - imageSize / 2, height / 2 - imageSize / 1.25 / 2, imageSize, imageSize / 1.25)
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context.font = 'regular 48pt Quicksand'
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context.fillText(translations.template.intro + ':', width / leftRatio + imageSize / 1.5, height / 2 - 36)
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const templateNameOptions = templateName === 'dowolne' ? ['dowolne'] : template.nameOptions();
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context.font = `bold ${templateNameOptions.length <= 2 ? '70' : '36'}pt Quicksand`
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context.fillText(templateNameOptions.join('\n'), width / leftRatio + imageSize / 1.5, height / 2 + (templateNameOptions.length <= 2 ? 72 : 24))
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return res.set('content-type', mime).send(canvas.toBuffer(mime));
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});
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export default router;
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