1 files changed, 47 insertions, 0 deletions
diff --git a/src/routes/+page.svelte b/src/routes/+page.svelte
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+<script lang="ts">
+    import { DateTime } from "luxon";
+
+    const getCurrentYear = () => DateTime.now().year;
+    const getRelative = (year) =>
+        DateTime.local(year).toRelative({ locale: "en" });
+
+    let year = $state(getCurrentYear());
+    let sqrt = $derived(year ** 0.5);
+    let isPerfectSquare = $derived(Number.isInteger(sqrt));
+    let lastSqrt = $derived(isPerfectSquare ? sqrt - 1 : Math.floor(sqrt));
+    let nextSqrt = $derived(isPerfectSquare ? sqrt + 1 : Math.ceil(sqrt));
+    let last = $derived(lastSqrt ** 2);
+    let next = $derived(nextSqrt ** 2);
+    let nextRelative = $state(getRelative(next));
+
+    setInterval(() => {
+        year = getCurrentYear();
+        nextRelative = getRelative(next);
+    }, 500);
+</script>
+
+<div id="container">
+    {#if isPerfectSquare}
+        <div id="answer">Yes.</div>
+        <strong>{sqrt}</strong><sup>2</sup> = {year}.
+    {:else}
+        <div id="answer">No.</div>
+    {/if}
+    The last was
+    <ruby>{last}<rp> (</rp><rt>{lastSqrt}<sup>2</sup></rt><rp>)</rp></ruby>, and
+    the next is
+    <ruby>{next}<rp> (</rp><rt>{nextSqrt}<sup>2</sup></rt><rp>)</rp></ruby>, {nextRelative}!
+</div>
+
+<style>
+    #container {
+        text-align: center;
+        font-size: 2rem;
+    }
+    #answer {
+        font-size: 5em;
+        margin: 0;
+        font-weight: bold;
+        font-family: sans-serif;
+    }
+</style>