feat: export PDF del piano settimanale

GET /me/meal-plans/export.pdf restituisce un PDF stampabile del piano
ACTIVE: 7 giorni × pasti con macros giornalieri + per-pasto + tempo
preparazione, gestione free-meal e giorni di digiuno completo, ultima
pagina con lista spesa aggregata per reparto.

- apps/api/.../plan/export.routes.ts: pdfkit, layout A4 con paginazione
  automatica e footer disclaimer su tutte le pagine
- apps/web/.../api/plan-export: proxy Next.js per same-origin + cookie
- apps/web/.../plan/page.tsx: aggiunto link "Esporta PDF ↗" accanto a
  "Lista della spesa" nell'header del piano

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/api/src/app.ts

@@ -10,6 +10,7 @@ import { dbRoutes } from './modules/db/db.routes.js';
 import { healthRoutes } from './modules/health/health.routes.js';
 import { meRoutes } from './modules/me/me.routes.js';
 import { notificationsRoutes } from './modules/notifications/notifications.routes.js';
+import { planExportRoutes } from './modules/plan/export.routes.js';
 import { planRoutes } from './modules/plan/plan.routes.js';
 import { preferencesRoutes } from './modules/preferences/preferences.routes.js';
 import { profileRoutes } from './modules/profile/profile.routes.js';
@@ -60,6 +61,7 @@ export async function buildApp(): Promise<FastifyInstance> {
   await app.register(checkInRoutes);
   await app.register(trackingExportRoutes);
   await app.register(planRoutes);
+  await app.register(planExportRoutes);
   await app.register(shoppingRoutes);
   await app.register(notificationsRoutes);
 

apps/api/src/modules/plan/export.routes.ts

@@ -0,0 +1,230 @@
+// PRD §5.1 — Export PDF del piano settimanale, stampabile.
+// 7 giorni × 4 pasti (o quelli effettivamente schedulati dal protocollo)
+// con macros, tempi di preparazione e una lista spesa aggregata in coda.
+
+import type { FastifyPluginAsync } from 'fastify';
+// eslint-disable-next-line import/default
+import PDFDocument from 'pdfkit';
+
+import { requireAuth } from '../../plugins/auth.js';
+
+const ITALIAN_DATE = new Intl.DateTimeFormat('it-IT', {
+  day: 'numeric',
+  month: 'long',
+  year: 'numeric',
+});
+
+const DAY_LABELS = ['Lunedì', 'Martedì', 'Mercoledì', 'Giovedì', 'Venerdì', 'Sabato', 'Domenica'];
+
+const MEAL_LABELS: Record<string, string> = {
+  COLAZIONE: 'Colazione',
+  PRANZO: 'Pranzo',
+  SPUNTINO: 'Spuntino',
+  CENA: 'Cena',
+};
+
+export const planExportRoutes: FastifyPluginAsync = async (fastify) => {
+  fastify.get(
+    '/me/meal-plans/export.pdf',
+    { preHandler: requireAuth() },
+    async (request, reply) => {
+      const userId = request.user!.id;
+
+      const plan = await fastify.prisma.mealPlan.findFirst({
+        where: { userId, status: 'ACTIVE' },
+        orderBy: { weekStart: 'desc' },
+        include: {
+          slots: {
+            include: {
+              selected: {
+                include: {
+                  ingredients: { include: { ingredient: true } },
+                },
+              },
+            },
+            orderBy: [{ dayOfWeek: 'asc' }, { meal: 'asc' }],
+          },
+        },
+      });
+
+      if (!plan) {
+        return reply.code(404).send({ error: 'plan_not_found' });
+      }
+
+      const doc = new PDFDocument({ size: 'A4', margin: 50, bufferPages: true });
+      reply.header('Content-Type', 'application/pdf');
+      reply.header('Content-Disposition', 'attachment; filename="ketopath-piano.pdf"');
+      reply.send(doc);
+
+      // ── Header ───────────────────────────────────────────────────────────
+      doc
+        .fillColor('#221d18')
+        .font('Helvetica-Bold')
+        .fontSize(22)
+        .text('KetoPath', { continued: true })
+        .fillColor('#9a3f29')
+        .text('.');
+
+      const weekStartDate = new Date(plan.weekStart);
+      const weekEndDate = new Date(weekStartDate);
+      weekEndDate.setDate(weekEndDate.getDate() + 6);
+      doc
+        .moveDown(0.2)
+        .fillColor('#3d3530')
+        .font('Helvetica')
+        .fontSize(9)
+        .text(
+          `Piano settimanale — ${ITALIAN_DATE.format(weekStartDate)} → ${ITALIAN_DATE.format(weekEndDate)}`,
+        )
+        .text(`Generato il ${ITALIAN_DATE.format(new Date())}`);
+
+      doc
+        .moveDown(1)
+        .strokeColor('#bdb6a3')
+        .lineWidth(0.5)
+        .moveTo(50, doc.y)
+        .lineTo(545, doc.y)
+        .stroke();
+
+      // ── Days ─────────────────────────────────────────────────────────────
+      const slotsByDay = new Map<number, typeof plan.slots>();
+      for (const s of plan.slots) {
+        const arr = slotsByDay.get(s.dayOfWeek) ?? [];
+        arr.push(s);
+        slotsByDay.set(s.dayOfWeek, arr);
+      }
+
+      for (let day = 0; day < 7; day++) {
+        const slots = slotsByDay.get(day) ?? [];
+
+        // Forza una nuova pagina se manca spazio
+        if (doc.y > 720) doc.addPage();
+
+        doc.moveDown(0.8).fillColor('#221d18').font('Helvetica-Bold').fontSize(13);
+        doc.text(DAY_LABELS[day] ?? `Giorno ${day + 1}`);
+
+        if (slots.length === 0) {
+          doc
+            .moveDown(0.2)
+            .fillColor('#7a7060')
+            .font('Helvetica-Oblique')
+            .fontSize(9)
+            .text('Giorno di digiuno completo — solo acqua, tè e tisane.');
+          continue;
+        }
+
+        const dayKcal = slots.reduce((acc, s) => acc + (s.selected?.kcal ?? 0), 0);
+        const dayP = slots.reduce((acc, s) => acc + (s.selected?.proteinG ?? 0), 0);
+        const dayF = slots.reduce((acc, s) => acc + (s.selected?.fatG ?? 0), 0);
+        const dayC = slots.reduce((acc, s) => acc + (s.selected?.netCarbG ?? 0), 0);
+
+        doc
+          .fillColor('#7a7060')
+          .font('Helvetica')
+          .fontSize(8)
+          .text(
+            `${Math.round(dayKcal)} kcal · P ${Math.round(dayP)} g · G ${Math.round(dayF)} g · C ${Math.round(dayC)} g`,
+          );
+
+        for (const slot of slots) {
+          if (slot.isFreeMeal) {
+            doc
+              .moveDown(0.4)
+              .fillColor('#9a3f29')
+              .font('Helvetica-Oblique')
+              .fontSize(10)
+              .text(`${MEAL_LABELS[slot.meal] ?? slot.meal}: pasto libero (~750 kcal stimate)`);
+            continue;
+          }
+          if (!slot.selected) continue;
+
+          doc
+            .moveDown(0.4)
+            .fillColor('#221d18')
+            .font('Helvetica-Bold')
+            .fontSize(10)
+            .text(MEAL_LABELS[slot.meal] ?? slot.meal, { continued: true })
+            .fillColor('#3d3530')
+            .font('Helvetica')
+            .text(`  ·  ${slot.selected.name}`);
+          doc
+            .fillColor('#7a7060')
+            .fontSize(8)
+            .text(
+              `   ${Math.round(slot.selected.kcal)} kcal · P ${Math.round(slot.selected.proteinG)} · G ${Math.round(slot.selected.fatG)} · C ${Math.round(slot.selected.netCarbG)} · ${slot.selected.prepMinutes} min`,
+            );
+        }
+      }
+
+      // ── Lista spesa ──────────────────────────────────────────────────────
+      doc.addPage();
+      doc.fillColor('#221d18').font('Helvetica-Bold').fontSize(16).text('Lista della spesa');
+      doc
+        .moveDown(0.3)
+        .fillColor('#7a7060')
+        .font('Helvetica-Oblique')
+        .fontSize(9)
+        .text('Quantità totali per la settimana, raggruppate per reparto.');
+
+      type AggLine = { name: string; quantity: number; unit: string };
+      const byCategory = new Map<string, Map<string, AggLine>>();
+      for (const slot of plan.slots) {
+        if (!slot.selected || slot.isFreeMeal) continue;
+        for (const ri of slot.selected.ingredients) {
+          const cat = ri.ingredient.category;
+          if (!byCategory.has(cat)) byCategory.set(cat, new Map());
+          const items = byCategory.get(cat)!;
+          const key = `${ri.ingredient.name}::${ri.unit}`;
+          const existing = items.get(key);
+          if (existing) {
+            existing.quantity += ri.quantity;
+          } else {
+            items.set(key, {
+              name: ri.ingredient.name,
+              quantity: ri.quantity,
+              unit: ri.unit,
+            });
+          }
+        }
+      }
+
+      const sortedCategories = Array.from(byCategory.keys()).sort((a, b) =>
+        a.localeCompare(b, 'it'),
+      );
+      for (const cat of sortedCategories) {
+        doc
+          .moveDown(0.7)
+          .fillColor('#221d18')
+          .font('Helvetica-Bold')
+          .fontSize(11)
+          .text(cat.toUpperCase());
+        const items = Array.from(byCategory.get(cat)!.values()).sort((a, b) =>
+          a.name.localeCompare(b.name, 'it'),
+        );
+        doc.font('Helvetica').fontSize(10).fillColor('#3d3530');
+        for (const it of items) {
+          const qty = Number.isInteger(it.quantity) ? String(it.quantity) : it.quantity.toFixed(1);
+          doc.text(`  • ${it.name} — ${qty} ${it.unit}`);
+        }
+      }
+
+      // ── Footer ───────────────────────────────────────────────────────────
+      const pageCount = doc.bufferedPageRange().count;
+      for (let i = 0; i < pageCount; i++) {
+        doc.switchToPage(i);
+        doc
+          .fillColor('#7a7060')
+          .font('Helvetica')
+          .fontSize(7)
+          .text(
+            'KetoPath — uno strumento di stile di vita, non sostituisce il parere medico.',
+            50,
+            800,
+            { align: 'center', width: 495 },
+          );
+      }
+
+      doc.end();
+    },
+  );
+};

apps/web/messages/it.json

@@ -483,6 +483,8 @@
     "consumedMark": "Segna come consumato",
     "consumedUndo": "Annulla consumato",
     "adherence": "Aderenza",
+    "linkShopping": "Lista della spesa",
+    "exportPdf": "Esporta PDF",
     "freeMealMark": "Segna come pasto libero",
     "freeMealUndo": "Torna a una ricetta keto",
     "freeMealLabel": "Pasto libero pianificato",

apps/web/src/app/[locale]/plan/page.tsx

@@ -90,12 +90,22 @@ function PlanPageContent({ plan }: { plan: Awaited<ReturnType<typeof fetchCurren
               </Button>
             </form>
             {plan ? (
+              <>
                 <Link
                   href="/shopping"
                   className="text-ink-soft decoration-pomodoro hover:text-ink font-mono text-[11px] uppercase tracking-widest underline decoration-[1.5px] underline-offset-[5px] transition-colors"
                 >
-                Lista della spesa →
+                  {t('linkShopping')} →
                 </Link>
+                <a
+                  href="/api/plan-export"
+                  target="_blank"
+                  rel="noopener noreferrer"
+                  className="text-ink-soft decoration-pomodoro hover:text-ink font-mono text-[11px] uppercase tracking-widest underline decoration-[1.5px] underline-offset-[5px] transition-colors"
+                >
+                  {t('exportPdf')} ↗
+                </a>
+              </>
             ) : null}
           </div>
         </div>

apps/web/src/app/api/plan-export/route.ts

@@ -0,0 +1,32 @@
+// Proxy verso l'API: scarica il PDF del piano settimanale.
+
+import { headers } from 'next/headers';
+import { NextResponse } from 'next/server';
+
+export const dynamic = 'force-dynamic';
+
+const API_URL = process.env.API_URL ?? 'http://localhost:4000';
+
+export async function GET(): Promise<Response> {
+  const cookie = headers().get('cookie') ?? '';
+  const upstream = await fetch(`${API_URL}/me/meal-plans/export.pdf`, {
+    headers: { cookie },
+    cache: 'no-store',
+  });
+  if (!upstream.ok) {
+    return NextResponse.json(
+      { error: `api_error_${upstream.status}` },
+      { status: upstream.status },
+    );
+  }
+  const buffer = await upstream.arrayBuffer();
+  return new NextResponse(buffer, {
+    status: 200,
+    headers: {
+      'Content-Type': 'application/pdf',
+      'Content-Disposition':
+        upstream.headers.get('content-disposition') ?? 'attachment; filename="ketopath-piano.pdf"',
+      'Cache-Control': 'no-store',
+    },
+  });
+}