unduckified/index.html at main · taciturnaxolotl/unduckified · GitHub

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<!doctype html>
<html lang="en">
	<head>
		<meta charset="UTF-8" />
		<script>
			// First-load bang redirect — the cold path, before the service worker
			// controls the page. This runs first, ahead of every landing-page asset,
			// so the catalog fetch starts immediately with nothing competing for the
			// connection. On a real bang query we fetch bangs.bin + the fallback
			// resolver and redirect, and we deliberately do NOT load the landing UI
			// (main.js and the sounds it pulls) — that only matters on the settings
			// page. The build hands us the bundle URLs in window.__APP__; loadApp()
			// brings the UI up only when we are not redirecting.
			(function () {
				var url = new URL(window.location.href);
				var query = url.searchParams.get("q");
				var trimmed = query ? query.trim() : "";
				var hasController =
					navigator.serviceWorker && navigator.serviceWorker.controller;
				// A real bang to resolve right now, with no worker to do it for us.
				var isRedirect =
					trimmed !== "" &&
					trimmed !== "!" &&
					trimmed !== "!settings" &&
					!hasController;

				// Bring up the landing/settings UI. The build strips the module tag
				// and hands its URL(s) here; in dev the original tag loads it instead
				// (window.__APP__ is undefined there, so this is a no-op).
				function loadApp() {
					var app = window.__APP__;
					if (!app || !app.js) return;
					app.js.forEach(function (src) {
						var s = document.createElement("script");
						s.type = "module";
						s.src = src;
						document.head.appendChild(s);
					});
				}
				function whenReady(fn) {
					if (document.readyState === "loading")
						document.addEventListener("DOMContentLoaded", fn);
					else fn();
				}

				// Tell the edge redirect (functions/index.ts) whether this profile
				// has settings it cannot see. src/libs.ts raises this cookie when
				// settings are stored, but nothing raises it for a profile that was
				// configured before the cookie existed, and the settings page may
				// never load again. So every page load reconciles it. Never on the
				// critical path: callers run this after the catalog fetch is away.
				function syncSettingsCookie() {
					try {
						var custom = localStorage.getItem("custom-bangs");
						var configured =
							!!localStorage.getItem("default-bang") ||
							!!(custom && custom !== "{}");
						var secure = location.protocol === "https:" ? "; Secure" : "";
						document.cookie = configured
							? "unduck-settings=1; Path=/; Max-Age=31536000; SameSite=Lax" + secure
							: "unduck-settings=; Path=/; Max-Age=0; SameSite=Lax" + secure;
					} catch (e) {}
				}

				// Give the worker the bang data we just downloaded.
				function seedServiceWorker(buffer) {
					if (!("serviceWorker" in navigator)) return;
					navigator.serviceWorker.ready
						.then(function (reg) {
							var target = reg.active || navigator.serviceWorker.controller;
							if (!target) return;
							target.postMessage({ type: "SEED_BANG_DATA", buffer: buffer.slice(0) });
						})
						.catch(function () {});
				}

				// Install the worker on every path, including a bare redirect (which
				// no longer loads main.js). Without this a search-only user — one who
				// never opens the settings page — would never install the worker or
				// migrate their data. register() is idempotent, so main.js registering
				// again on the landing page is harmless.
				if ("serviceWorker" in navigator) {
					navigator.serviceWorker
						.register("/sw.js", { updateViaCache: "none" })
						.catch(function () {});
				}

				// Hand the worker the settings the old page-based version kept in
				// localStorage and fold in its legacy search count (worker-side
				// idempotent). The landing page does this from main.ts; this covers the
				// redirect path, where main.js never loads. Best-effort: on a brand-new
				// install the worker may not be active before we navigate away, but the
				// cold fallback reads localStorage directly and this completes on a
				// later load.
				function seedWorker() {
					if (!("serviceWorker" in navigator)) return;
					navigator.serviceWorker.ready
						.then(function (reg) {
							var sw = reg.active;
							if (!sw) return;
							var def = localStorage.getItem("default-bang");
							if (def) sw.postMessage({ type: "SET_DEFAULT_BANG", trigger: def });
							try {
								var cb = JSON.parse(localStorage.getItem("custom-bangs") || "{}");
								if (cb && Object.keys(cb).length)
									sw.postMessage({ type: "UPDATE_CUSTOM_BANGS", bangs: cb });
							} catch (e) {}
							var raw = localStorage.getItem("search-count");
							if (raw === null) return;
							var n = parseInt(raw, 10);
							if (!(n > 0)) {
								localStorage.removeItem("search-count");
								return;
							}
							var ch = new MessageChannel();
							ch.port1.onmessage = function () {
								localStorage.removeItem("search-count");
							};
							sw.postMessage({ type: "MIGRATE_SEARCH_COUNT", count: n }, [
								ch.port2,
							]);
						})
						.catch(function () {});
				}

				// Ask the worker whether it already holds bang data, so warming
				// never re-downloads something that is already cached.
				function workerNeedsData() {
					if (!("serviceWorker" in navigator)) return Promise.resolve(false);
					return navigator.serviceWorker.ready
						.then(function (reg) {
							var target = reg.active || navigator.serviceWorker.controller;
							if (!target) return false;
							return new Promise(function (resolve) {
								var channel = new MessageChannel();
								var settled = false;
								channel.port1.onmessage = function (event) {
									settled = true;
									resolve(!event.data || !event.data.ready);
								};
								target.postMessage({ type: "HAS_BANG_DATA" }, [channel.port2]);
								setTimeout(function () {
									if (!settled) resolve(false);
								}, 1000);
							});
						})
						.catch(function () {
							return false;
						});
				}

				if (!isRedirect) {
					// Landing, settings, or the worker is already in charge: show the UI.
					syncSettingsCookie();
					whenReady(loadApp);
					// On a bare landing visit, warm the worker so the next search is instant.
					if (trimmed === "" && "serviceWorker" in navigator) {
						window.addEventListener("load", function () {
							workerNeedsData().then(function (needed) {
								if (!needed) return;
								fetch("/bangs.bin")
									.then(function (r) { return r.arrayBuffer(); })
									.then(seedServiceWorker)
									.catch(function () {});
							});
						});
					}
					return;
				}

				// Fast redirect path: no landing bundle, and the catalog and the
				// fallback resolver load *in parallel* — the resolver is ~1 KiB and
				// finishes long before the catalog, so its round-trip is fully hidden
				// behind the catalog download instead of running after it.
				var dataPromise = fetch("/bangs.bin").then(function (r) {
					return r.arrayBuffer();
				});
				var readyPromise = new Promise(function (resolve) {
					window.addEventListener("fallbackReady", resolve, { once: true });
				});
				var fb = document.createElement("script");
				fb.type = "module";
				fb.src = "/fallback.js";
				document.head.appendChild(fb);

				// Migrate settings + search count to the worker on the redirect path;
				// main.js (which does this on the landing page) never loads here.
				// The catalog request is already in flight, so this costs nothing.
				syncSettingsCookie();
				seedWorker();

				Promise.all([dataPromise, readyPromise])
					.then(function (parts) {
						var data = parts[0];
						return window.resolveFallback(query, data).then(function (dest) {
							seedServiceWorker(data);
							return dest;
						});
					})
					.then(function (dest) {
						if (dest) window.location.replace(dest);
						else whenReady(loadApp);
					})
					.catch(function (err) {
						console.error("Fallback redirect failed:", err);
						whenReady(loadApp); // don't strand the user on a blank page
					});
			})();
		</script>
		<link rel="icon" type="image/gif" href="/goose.gif" />
		<link
			rel="search"
			type="application/opensearchdescription+xml"
			title="Unduck"
			href="/opensearch.xml"
		/>
		<link rel="manifest" href="/manifest.json" />
		<style>
			/* Font fallback that closely matches Inter metrics */
			@font-face {
				font-family: "Inter Fallback";
				size-adjust: 107%;
				ascent-override: 90%;
				src: local("Arial");
				font-display: swap;
			}

			:root {
				font-family:
					Inter,
					"Inter Fallback",
					system-ui,
					-apple-system,
					BlinkMacSystemFont,
					"Segoe UI",
					Roboto,
					Oxygen,
					Ubuntu,
					Cantarell,
					"Open Sans",
					"Helvetica Neue",
					sans-serif;
				font-synthesis: none;
				text-rendering: optimizeLegibility;
				-webkit-font-smoothing: antialiased;
				-moz-osx-font-smoothing: grayscale;

				/* Light mode colors */
				--text-color: #1a1a1a;
				--text-color-secondary: #666;
				--text-color-hover: #333;
				--bg-color: #fff;
				--bg-color-secondary: #f5f5f5;
				--bg-color-hover: #f0f0f0;
				--bg-color-active: #e5e5e5;
				--bg-color-danger: #e9808a;
				--border-color: #ddd;
			}

			@media (prefers-color-scheme: dark) {
				:root {
					--text-color: #e0e0e0;
					--text-color-secondary: #999;
					--text-color-hover: #fff;
					--bg-color: #121212;
					--bg-color-secondary: #1e1e1e;
					--bg-color-hover: #2a2a2a;
					--bg-color-active: #333;
					--bg-color-danger: #f15f6d;
					--border-color: #444;
				}
			}

			* {
				margin: 0;
				padding: 0;
				box-sizing: border-box;
				outline: none;
			}
			*:focus {
				outline: 2px solid var(--text-color-secondary);
			}

			html,
			body {
				height: 100%;
				width: 100%;
			}

			body {
				line-height: 1.5;
				font-weight: 400;
				font-size: 16px;
				color: var(--text-color);
				background-color: var(--bg-color);
			}

			#app {
				min-height: 100vh;
				background-color: var(--bg-color);
			}

			input {
				margin: 2px 0px !important;
				padding: 8px 12px;
				border: 1px solid var(--border-color);
				border-radius: 4px;
				width: 100%;
				background: var(--bg-color-secondary);
				color: var(--text-color);
				font: inherit;
			}

			button {
				font: inherit;
				border: none;
				background: none;
				cursor: pointer;
				color: var(--text-color-secondary);
			}

			button:hover {
				background: var(--bg-color-hover);
			}
		</style>
		<meta name="viewport" content="width=device-width, initial-scale=1.0" />
		<title>Unduck</title>
		<meta
			name="description"
			content="A better default search engine (with bangs!)"
		/>
	</head>
	<body>
		<div id="app"></div>
		<!-- Vite entry. In production the defer-app-bundle plugin strips this tag
		     and hands its URL to the inline loader above, so it never loads on the
		     redirect path. In dev it loads normally. -->
		<script type="module" src="/src/main.ts"></script>
	</body>
</html>