From 6f51aec4c6699ff0938aba9291af637f2d955fb3 Mon Sep 17 00:00:00 2001
From: AdrianoDev <adrianodalpastro@gmail.com>
Date: Sun, 5 Jul 2026 15:40:09 +0200
Subject: [PATCH] feat: preset stili contenuto con whitelist

---
 src/lib/style-presets.ts    | 31 +++++++++++++++++++++++++++++++
 src/styles/global.css       | 19 +++++++++++++++++++
 tests/style-presets.test.ts | 24 ++++++++++++++++++++++++
 3 files changed, 74 insertions(+)
 create mode 100644 src/lib/style-presets.ts
 create mode 100644 tests/style-presets.test.ts

diff --git a/src/lib/style-presets.ts b/src/lib/style-presets.ts
new file mode 100644
index 0000000..821ad38
--- /dev/null
+++ b/src/lib/style-presets.ts
@@ -0,0 +1,31 @@
+export const STYLE_GROUPS = {
+  size: ['s', 'm', 'l'],
+  color: ['accent', 'accent-dark', 'dark', 'heading', 'text', 'text-light', 'white'],
+  weight: ['normal', 'bold'],
+  style: ['normal', 'italic'],
+  align: ['left', 'center', 'right'],
+} as const;
+
+export type StyleGroup = keyof typeof STYLE_GROUPS;
+
+export function validateStyles(input: unknown):
+  | { ok: true; styles: Record<string, string> }
+  | { ok: false; error: string } {
+  if (typeof input !== 'object' || input === null || Array.isArray(input)) {
+    return { ok: false, error: 'Stili non validi.' };
+  }
+  const out: Record<string, string> = {};
+  for (const [k, v] of Object.entries(input)) {
+    const allowed = (STYLE_GROUPS as Record<string, readonly string[]>)[k];
+    if (!allowed) return { ok: false, error: `Gruppo stile sconosciuto: ${k}` };
+    if (typeof v !== 'string' || !allowed.includes(v)) {
+      return { ok: false, error: `Valore non ammesso per ${k}: ${String(v)}` };
+    }
+    out[k] = v;
+  }
+  return { ok: true, styles: out };
+}
+
+export function stylesToClasses(styles: Record<string, string>): string {
+  return Object.entries(styles).map(([k, v]) => `cs-${k}-${v}`).join(' ');
+}
diff --git a/src/styles/global.css b/src/styles/global.css
index 09dd32e..2b49c61 100644
--- a/src/styles/global.css
+++ b/src/styles/global.css
@@ -68,3 +68,22 @@ html.js [data-reveal].is-inview, html.js .section-heading.is-inview { opacity: 1
   html.js [data-reveal], html.js .section-heading { opacity: 1; transform: none; transition: none; }
   *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
 }
+
+/* === Stili contenuto (preset pannello /admin/content) === */
+.cs-size-s { font-size: .85em; }
+.cs-size-m { font-size: 1em; }
+.cs-size-l { font-size: 1.25em; }
+.cs-color-accent { color: var(--c-accent); }
+.cs-color-accent-dark { color: var(--c-accent-dark); }
+.cs-color-dark { color: var(--c-dark); }
+.cs-color-heading { color: var(--c-heading); }
+.cs-color-text { color: var(--c-text); }
+.cs-color-text-light { color: var(--c-text-light); }
+.cs-color-white { color: #fff; }
+.cs-weight-normal { font-weight: 400; }
+.cs-weight-bold { font-weight: 700; }
+.cs-style-normal { font-style: normal; }
+.cs-style-italic { font-style: italic; }
+.cs-align-left { text-align: left; }
+.cs-align-center { text-align: center; }
+.cs-align-right { text-align: right; }
diff --git a/tests/style-presets.test.ts b/tests/style-presets.test.ts
new file mode 100644
index 0000000..32b324f
--- /dev/null
+++ b/tests/style-presets.test.ts
@@ -0,0 +1,24 @@
+import { describe, it, expect } from 'vitest';
+import { validateStyles, stylesToClasses, STYLE_GROUPS } from '../src/lib/style-presets';
+
+describe('style presets', () => {
+  it('accetta chiavi e valori in whitelist', () => {
+    const r = validateStyles({ size: 'l', color: 'accent', align: 'center' });
+    expect(r).toEqual({ ok: true, styles: { size: 'l', color: 'accent', align: 'center' } });
+  });
+
+  it('rifiuta gruppo sconosciuto e valore fuori lista', () => {
+    expect(validateStyles({ font: 'comic' }).ok).toBe(false);
+    expect(validateStyles({ size: 'xxl' }).ok).toBe(false);
+    expect(validateStyles('non-oggetto').ok).toBe(false);
+  });
+
+  it('mappa stili in classi cs-*', () => {
+    expect(stylesToClasses({ size: 's', weight: 'bold' })).toBe('cs-size-s cs-weight-bold');
+    expect(stylesToClasses({})).toBe('');
+  });
+
+  it('espone i gruppi attesi', () => {
+    expect(Object.keys(STYLE_GROUPS)).toEqual(['size', 'color', 'weight', 'style', 'align']);
+  });
+});