old backend core lib

2026-07-18 11:44:58 -07:00
parent 994854d104
commit f599672a30
36 changed files with 3776 additions and 276 deletions
@@ -0,0 +1,46 @@
+import { jadeScrollTheme } from './jadeScroll'
+import type { OverlayThemeDefinition, OverlayThemeId } from './types'
+
+export type { OverlayThemeDefinition, OverlayThemeId, ThemeParticle } from './types'
+
+/** Ordered registry used by both the control select and OBS renderer. */
+export const overlayThemes: readonly OverlayThemeDefinition[] = [jadeScrollTheme]
+
+const themesById = new Map(overlayThemes.map(theme => [theme.id, theme]))
+
+/**
+ * Resolve untrusted snapshots defensively. The Rust API rejects unknown IDs,
+ * while this fallback keeps older or cached OBS pages renderable during deploys.
+ */
+export function getOverlayTheme(id: unknown): OverlayThemeDefinition {
+  return themesById.get(id as OverlayThemeId) ?? jadeScrollTheme
+}
+
+export function normalizeThemeId(id: unknown): OverlayThemeId {
+  return getOverlayTheme(id).id
+}
+
+/** Translate semantic theme fields into the renderer's CSS contract. */
+export function themeCssVariables(
+  theme: OverlayThemeDefinition,
+): Readonly<Record<`--theme-${string}`, string>> {
+  return {
+    '--theme-text': theme.palette.text,
+    '--theme-user': theme.palette.user,
+    '--theme-compact-user': theme.palette.compactUser,
+    '--theme-accent': theme.palette.accent,
+    '--theme-price': theme.palette.price,
+    '--theme-card-border': theme.surfaces.cardBorder,
+    '--theme-card-background': theme.surfaces.cardBackground,
+    '--theme-pattern-divider': `url("${theme.ornaments.patterns.divider}")`,
+    '--theme-pattern-cluster': `url("${theme.ornaments.patterns.cluster}")`,
+    '--theme-pattern-vine': `url("${theme.ornaments.patterns.vine}")`,
+    '--theme-motion-arrive': theme.motion.arrive,
+    '--theme-motion-sheen': theme.motion.sheen,
+    '--theme-motion-featured': theme.motion.featured,
+    '--theme-motion-float': theme.motion.float,
+    '--theme-motion-sparkle': theme.motion.sparkle,
+    '--theme-motion-unfurl': theme.motion.unfurl,
+    '--theme-motion-rails-open': theme.motion.railsOpen,
+  }
+}