31 lines
1.1 KiB
JavaScript
31 lines
1.1 KiB
JavaScript
"use strict";
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// @returns Response
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// https://developer.mozilla.org/en-US/docs/Web/API/Response
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async function fetchResponse(event) {
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//https://developer.mozilla.org/en-US/docs/Web/API/FetchEvent/request
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//https://developer.mozilla.org/en-US/docs/Web/API/Request
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const { request } = event;
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const resp = await fetch(request);
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const body = await resp.text();
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const cookies = resp.headers.getSetCookie();
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let theme_toggled = false;
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for (let cookie of cookies) {
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const [key, value] = cookie.split("=");
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if (key != "theme_toggled") {
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continue;
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}
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theme_toggled = value[0] === "t";
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}
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// this is a brittle way of accomplishing our desired behavior
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body.replace(`<input id="css_state" type="checkbox" hidden>`,
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`<input id="css_state" type="checkbox" hidden ${theme_toggled ? "checked" : ""}>`);
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console.log(body);
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return new Response(body, resp);
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}
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self.addEventListener('fetch', (event) => {
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if (!event.request.url.endsWith(".html")) return;
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//https://developer.mozilla.org/en-US/docs/Web/API/FetchEvent/respondWith
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event.respondWith(fetchResponse(event));
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})
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