added admin dashboard

src/routes/admin/images/+page.server.ts

@@ -0,0 +1,76 @@
+import type { Actions, PageServerLoad } from './$types';
+import { fail } from '@sveltejs/kit';
+import { writeFileSync, mkdirSync, existsSync, unlinkSync } from 'node:fs';
+import { join } from 'node:path';
+import { randomUUID } from 'node:crypto';
+import { getContent, resetImage, setImage } from '$lib/server/content';
+import { DEFAULT_IMAGES } from '$lib/content/defaults';
+
+const UPLOAD_DIR = join(process.cwd(), 'static', 'img', 'uploads');
+const MAX_BYTES = 8 * 1024 * 1024; // 8 MB
+const ALLOWED = new Set(['image/png', 'image/jpeg', 'image/webp', 'image/gif', 'image/svg+xml']);
+
+export const load: PageServerLoad = () => {
+  const content = getContent();
+  return { images: content.images };
+};
+
+function extFromType(type: string, fallbackName: string): string {
+  if (type === 'image/png') return 'png';
+  if (type === 'image/jpeg') return 'jpg';
+  if (type === 'image/webp') return 'webp';
+  if (type === 'image/gif') return 'gif';
+  if (type === 'image/svg+xml') return 'svg';
+  const m = /\.([a-zA-Z0-9]+)$/.exec(fallbackName);
+  return m ? m[1].toLowerCase() : 'bin';
+}
+
+export const actions: Actions = {
+  upload: async ({ request }) => {
+    if (!existsSync(UPLOAD_DIR)) mkdirSync(UPLOAD_DIR, { recursive: true });
+    const form = await request.formData();
+    const slot = String(form.get('slot') ?? '');
+    const alt = String(form.get('alt') ?? '').trim();
+    const file = form.get('file');
+
+    if (!slot || !(slot in DEFAULT_IMAGES)) return fail(400, { error: 'Slot immagine non valido.' });
+    if (!(file instanceof File) || !file.size) {
+      // alt-only update
+      if (alt) {
+        setImage(slot, { alt });
+        return { success: true, slot, altOnly: true };
+      }
+      return fail(400, { error: 'Nessun file caricato.' });
+    }
+    if (file.size > MAX_BYTES) return fail(400, { error: 'File troppo grande (max 8 MB).' });
+    if (file.type && !ALLOWED.has(file.type)) return fail(400, { error: `Tipo file non supportato: ${file.type}.` });
+
+    const buf = Buffer.from(await file.arrayBuffer());
+    const ext = extFromType(file.type, file.name);
+    const filename = `${slot}-${randomUUID().slice(0, 8)}.${ext}`;
+    const fullPath = join(UPLOAD_DIR, filename);
+    writeFileSync(fullPath, buf);
+
+    const publicPath = `/img/uploads/${filename}`;
+    const next = setImage(slot, { src: publicPath, alt: alt || undefined });
+    return { success: true, slot, src: next.src };
+  },
+
+  reset: async ({ request }) => {
+    const form = await request.formData();
+    const slot = String(form.get('slot') ?? '');
+    if (!slot || !(slot in DEFAULT_IMAGES)) return fail(400, { error: 'Slot non valido.' });
+
+    const current = getContent().images[slot];
+    if (current?.src?.startsWith('/img/uploads/')) {
+      const fullPath = join(process.cwd(), 'static', current.src);
+      try {
+        if (existsSync(fullPath)) unlinkSync(fullPath);
+      } catch {
+        // ignore
+      }
+    }
+    resetImage(slot);
+    return { success: true, slot, reset: true };
+  }
+};