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51 lines
1.4 KiB
51 lines
1.4 KiB
const { Settings } = require("../settings");
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const cheerio = require("cheerio");
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const jsesc = require("jsesc");
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const { log } = require("../../src/util");
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const injectDefaultAppearance = (req, res, next) => {
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try {
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// Intercept send() calls and inject Default Appearance
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// https://stackoverflow.com/a/60817116
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const oldSend = res.send;
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res.send = async (data) => {
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if (typeof data === "string") {
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log.debug("inject-default-appearance", req.method + " " + req.url);
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const $ = cheerio.load(data);
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const defaultAppearance = await Settings.get("defaultAppearance");
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if (defaultAppearance) {
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const head = $("head");
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const escapedJSONObject = jsesc(defaultAppearance, { isScriptContext: true });
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const script = $(`
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<script id="default-appearance" data-json="{}">
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window.defaultAppearance = ${escapedJSONObject};
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</script>
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`);
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head.append(script);
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data = $.root().html();
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}
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}
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res.send = oldSend; // set function back to avoid 'double-send'
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return res.send(data);
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};
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next();
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} catch (e) {
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next(e);
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}
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};
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module.exports = {
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injectDefaultAppearance
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};
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