feat(create): pick shuffle presets from a curated list (#11092)

* feat(create): pick shuffle presets from a curated list

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* chore: format

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

apps/v4/app/(app)/create/hooks/use-random.tsx

@@ -1,6 +1,7 @@
 "use client"
 
 import * as React from "react"
+import { decodePreset } from "shadcn/preset"
 
 import {
   BASE_COLORS,
@@ -10,10 +11,20 @@ import {
   MENU_COLORS,
   RADII,
   STYLES,
+  type BaseColorName,
+  type ChartColorName,
   type FontHeadingValue,
+  type FontValue,
+  type IconLibraryName,
+  type MenuAccentValue,
+  type MenuColorValue,
+  type RadiusValue,
+  type StyleName,
+  type ThemeName,
 } from "@/registry/config"
 import { useLocks } from "@/app/(app)/create/hooks/use-locks"
 import { FONTS } from "@/app/(app)/create/lib/fonts"
+import { getPresetCode } from "@/app/(app)/create/lib/preset-code"
 import {
   applyBias,
   RANDOMIZE_BIASES,
@@ -23,6 +34,7 @@ import {
   isTranslucentMenuColor,
   useDesignSystemSearchParams,
 } from "@/app/(app)/create/lib/search-params"
+import { SHUFFLE_PRESETS } from "@/app/(app)/create/lib/shuffle-presets"
 
 function randomItem<T>(array: readonly T[]): T {
   return array[Math.floor(Math.random() * array.length)]
@@ -37,7 +49,9 @@ export function useRandom() {
     paramsRef.current = params
   }, [params])
 
-  const randomize = React.useCallback(() => {
+  // True-random implementation. Kept, but shuffle is now wired to the
+  // curated preset list below.
+  const randomizeTrueRandom = React.useCallback(() => {
     const selectedStyle = locks.has("style")
       ? paramsRef.current.style
       : randomItem(STYLES).name
@@ -149,6 +163,60 @@ export function useRandom() {
     setParams(nextParams)
   }, [setParams, locks])
 
+  // Picks a random preset from the curated list instead of true random.
+  // Locked params are preserved over the decoded preset values.
+  const randomize = React.useCallback(() => {
+    // Avoid re-picking the preset that is currently applied.
+    const currentCode = getPresetCode(paramsRef.current)
+    const availableCodes = SHUFFLE_PRESETS.filter(
+      (code) => code !== currentCode
+    )
+    const decoded = decodePreset(
+      randomItem(availableCodes.length > 0 ? availableCodes : SHUFFLE_PRESETS)
+    )
+
+    if (!decoded) {
+      return
+    }
+
+    const current = paramsRef.current
+    const nextParams = {
+      style: locks.has("style") ? current.style : (decoded.style as StyleName),
+      baseColor: locks.has("baseColor")
+        ? current.baseColor
+        : (decoded.baseColor as BaseColorName),
+      theme: locks.has("theme") ? current.theme : (decoded.theme as ThemeName),
+      chartColor: locks.has("chartColor")
+        ? current.chartColor
+        : ((decoded.chartColor ?? decoded.theme) as ChartColorName),
+      iconLibrary: locks.has("iconLibrary")
+        ? current.iconLibrary
+        : (decoded.iconLibrary as IconLibraryName),
+      font: locks.has("font") ? current.font : (decoded.font as FontValue),
+      fontHeading: locks.has("fontHeading")
+        ? current.fontHeading
+        : (decoded.fontHeading as FontHeadingValue),
+      menuAccent: locks.has("menuAccent")
+        ? current.menuAccent
+        : (decoded.menuAccent as MenuAccentValue),
+      menuColor: locks.has("menuColor")
+        ? current.menuColor
+        : (decoded.menuColor as MenuColorValue),
+      radius: locks.has("radius")
+        ? current.radius
+        : (decoded.radius as RadiusValue),
+    }
+
+    // Keep the ref in sync so rapid repeats use the latest randomized state
+    // even before the URL state finishes committing.
+    paramsRef.current = {
+      ...paramsRef.current,
+      ...nextParams,
+    }
+
+    setParams(nextParams)
+  }, [setParams, locks])
+
   const randomizeRef = React.useRef(randomize)
   React.useEffect(() => {
     randomizeRef.current = randomize
@@ -177,5 +245,5 @@ export function useRandom() {
     }
   }, [])
 
-  return { randomize }
+  return { randomize, randomizeTrueRandom }
 }

apps/v4/app/(app)/create/lib/shuffle-presets.ts

@@ -0,0 +1,28 @@
+// Curated preset codes from https://dialectcn.xyz.
+export const SHUFFLE_PRESETS = [
+  "b6sUj34d9",
+  "b2tqYzpa88",
+  "b1W4tDrk",
+  "b1aIuQ2XC",
+  "b7jsW1RxJ5",
+  "b870VEw0in",
+  "b3Zheoix4U",
+  "b1x9M2c4aI",
+  "b1W7jDEW",
+  "b51GFh7y6",
+  "b2fms620zo",
+  "b1Q5GC",
+  "buKEvLs",
+  "b5rR41Mtnc",
+  "b6tOz2I0x",
+  "b2hNTREGRN",
+  "bdIJ7Sq",
+  "b6TqMNb5Wb",
+  "bJIirQ",
+  "b4aRK5K0fb",
+  "b5HCiD38LI",
+  "bdHjvCi",
+  "b7QDHijUjj",
+  "b4ZVZIPi9h",
+  "b1W4bcno",
+]