feat(rental): Sprint F — photos & vidéos items rental

prisma/migrations/20260603100000_rental_item_media/migration.sql

@@ -0,0 +1,22 @@
+-- Sprint F : RentalItemMedia (photos & vidéos pour items rental).
+-- Mêmes conventions que Media (carbet) : MediaType enum existant, s3Key/s3Url,
+-- sortOrder pour cover (0). Cascade sur RentalItem.
+
+CREATE TABLE "RentalItemMedia" (
+  "id"        TEXT NOT NULL,
+  "itemId"    TEXT NOT NULL,
+  "type"      "MediaType" NOT NULL,
+  "s3Key"     TEXT NOT NULL,
+  "s3Url"     TEXT NOT NULL,
+  "sortOrder" INTEGER NOT NULL DEFAULT 0,
+  "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+  CONSTRAINT "RentalItemMedia_pkey" PRIMARY KEY ("id")
+);
+
+CREATE INDEX "RentalItemMedia_itemId_sortOrder_idx"
+  ON "RentalItemMedia"("itemId", "sortOrder");
+
+ALTER TABLE "RentalItemMedia"
+  ADD CONSTRAINT "RentalItemMedia_itemId_fkey"
+  FOREIGN KEY ("itemId") REFERENCES "RentalItem"("id")
+  ON DELETE CASCADE ON UPDATE CASCADE;

prisma/schema.prisma

@@ -466,11 +466,26 @@ model RentalItem {
   provider       RentalProvider           @relation(fields: [providerId], references: [id], onDelete: Cascade)
   availabilities RentalItemAvailability[]
   lines          RentalLine[]
+  media          RentalItemMedia[]
 
   @@index([providerId])
   @@index([category, active])
 }
 
+model RentalItemMedia {
+  id        String    @id @default(cuid())
+  itemId    String
+  type      MediaType
+  s3Key     String
+  s3Url     String
+  sortOrder Int       @default(0)
+  createdAt DateTime  @default(now())
+
+  item RentalItem @relation(fields: [itemId], references: [id], onDelete: Cascade)
+
+  @@index([itemId, sortOrder])
+}
+
 model RentalItemAvailability {
   id              String   @id @default(cuid())
   itemId          String

src/app/admin/rental-items/[id]/page.tsx

@@ -2,6 +2,7 @@ import { notFound } from "next/navigation";
 import Link from "next/link";
 
 import { StatusBadge } from "@/components/admin/StatusBadge";
+import { MediaUploader } from "@/components/MediaUploader";
 import { getRentalItemForAdmin, listProvidersForSelect, RENTAL_CATEGORY_LABEL } from "@/lib/admin/rental-items";
 
 import { ItemForm } from "../_components/ItemForm";
@@ -56,6 +57,14 @@ export default async function EditRentalItemPage({ params }: PageProps) {
         />
       </header>
 
+      <section className="rounded-lg border border-zinc-200 bg-white p-5 shadow-sm">
+        <h2 className="mb-3 text-base font-semibold text-zinc-900">Photos & vidéos</h2>
+        <MediaUploader
+          scope={{ kind: "rental-item", itemId: item.id }}
+          initialMedia={item.media}
+        />
+      </section>
+
       <section className="rounded-lg border border-zinc-200 bg-white p-5 shadow-sm">
         <ItemForm
           providers={providers}

src/app/api/rental-media/[id]/route.ts

@@ -0,0 +1,38 @@
+import { NextResponse } from "next/server";
+
+import { auth } from "@/auth";
+import { recordAudit } from "@/lib/admin/audit";
+import { prisma } from "@/lib/prisma";
+import { canManageRentalProvider } from "@/lib/rental-access";
+
+export const runtime = "nodejs";
+
+export async function DELETE(_req: Request, ctx: { params: Promise<{ id: string }> }) {
+  const { id } = await ctx.params;
+  const session = await auth();
+  if (!session?.user?.id) {
+    return NextResponse.json({ error: "Non authentifié" }, { status: 401 });
+  }
+  const media = await prisma.rentalItemMedia.findUnique({
+    where: { id },
+    select: { id: true, itemId: true, item: { select: { providerId: true } } },
+  });
+  if (!media) return NextResponse.json({ error: "Média introuvable" }, { status: 404 });
+
+  const allowed = await canManageRentalProvider(
+    session.user.id,
+    session.user.role,
+    media.item.providerId,
+  );
+  if (!allowed) return NextResponse.json({ error: "Accès refusé" }, { status: 403 });
+
+  await prisma.rentalItemMedia.delete({ where: { id } });
+  await recordAudit({
+    scope: "uploads",
+    event: "rental.media.delete",
+    target: id,
+    actorEmail: session.user.email ?? null,
+    details: { itemId: media.itemId },
+  });
+  return NextResponse.json({ ok: true });
+}

src/app/api/rental-media/reorder/route.ts

@@ -0,0 +1,74 @@
+import { NextResponse } from "next/server";
+import { z } from "zod";
+
+import { auth } from "@/auth";
+import { recordAudit } from "@/lib/admin/audit";
+import { prisma } from "@/lib/prisma";
+import { canManageRentalProvider } from "@/lib/rental-access";
+
+export const runtime = "nodejs";
+
+const schema = z.object({
+  itemId: z.string().min(1),
+  orderedIds: z.array(z.string()).min(1).max(50),
+});
+
+export async function POST(req: Request) {
+  const session = await auth();
+  if (!session?.user?.id) {
+    return NextResponse.json({ error: "Non authentifié" }, { status: 401 });
+  }
+  const parsed = schema.safeParse(await req.json().catch(() => ({})));
+  if (!parsed.success) {
+    return NextResponse.json({ error: "Payload invalide" }, { status: 400 });
+  }
+  const { itemId, orderedIds } = parsed.data;
+
+  const item = await prisma.rentalItem.findUnique({
+    where: { id: itemId },
+    select: { providerId: true },
+  });
+  if (!item) return NextResponse.json({ error: "Item introuvable" }, { status: 404 });
+
+  const allowed = await canManageRentalProvider(
+    session.user.id,
+    session.user.role,
+    item.providerId,
+  );
+  if (!allowed) return NextResponse.json({ error: "Accès refusé" }, { status: 403 });
+
+  const existing = await prisma.rentalItemMedia.findMany({
+    where: { itemId, id: { in: orderedIds } },
+    select: { id: true },
+  });
+  if (existing.length !== orderedIds.length) {
+    return NextResponse.json({ error: "Certains médias n'appartiennent pas à l'item." }, { status: 400 });
+  }
+  await prisma.$transaction(
+    orderedIds.map((id, idx) =>
+      prisma.rentalItemMedia.update({ where: { id }, data: { sortOrder: idx } }),
+    ),
+  );
+
+  // Cover = sortOrder 0 → hydrate imageUrl pour rétro-compat listings
+  const firstId = orderedIds[0];
+  const firstMedia = await prisma.rentalItemMedia.findUnique({
+    where: { id: firstId },
+    select: { s3Url: true, type: true },
+  });
+  if (firstMedia && firstMedia.type === "PHOTO") {
+    await prisma.rentalItem.update({
+      where: { id: itemId },
+      data: { imageUrl: firstMedia.s3Url },
+    });
+  }
+
+  await recordAudit({
+    scope: "uploads",
+    event: "rental.media.reorder",
+    target: itemId,
+    actorEmail: session.user.email ?? null,
+    details: { count: orderedIds.length },
+  });
+  return NextResponse.json({ ok: true });
+}

src/app/api/uploads/rental-finalize/route.ts

@@ -0,0 +1,104 @@
+import { NextResponse } from "next/server";
+import { z } from "zod";
+
+import { auth } from "@/auth";
+import { MediaType } from "@/generated/prisma/enums";
+import { recordAudit } from "@/lib/admin/audit";
+import { prisma } from "@/lib/prisma";
+import { canManageRentalProvider } from "@/lib/rental-access";
+import { classifyMime } from "@/lib/uploads";
+import { generateImageVariants } from "@/lib/variants-server";
+
+export const runtime = "nodejs";
+
+const schema = z.object({
+  itemId: z.string().min(1),
+  s3Key: z.string().min(5).max(500),
+  s3Url: z.string().url(),
+  mime: z.string().min(3).max(100),
+});
+
+export async function POST(req: Request) {
+  const session = await auth();
+  if (!session?.user?.id) {
+    return NextResponse.json({ error: "Non authentifié" }, { status: 401 });
+  }
+  const parsed = schema.safeParse(await req.json().catch(() => ({})));
+  if (!parsed.success) {
+    return NextResponse.json(
+      { error: parsed.error.issues[0]?.message ?? "Payload invalide" },
+      { status: 400 },
+    );
+  }
+  const kind = classifyMime(parsed.data.mime);
+  if (!kind) return NextResponse.json({ error: "Type non supporté" }, { status: 400 });
+
+  const item = await prisma.rentalItem.findUnique({
+    where: { id: parsed.data.itemId },
+    select: { id: true, providerId: true },
+  });
+  if (!item) return NextResponse.json({ error: "Item introuvable" }, { status: 404 });
+
+  const allowed = await canManageRentalProvider(
+    session.user.id,
+    session.user.role,
+    item.providerId,
+  );
+  if (!allowed) {
+    return NextResponse.json({ error: "Accès refusé" }, { status: 403 });
+  }
+
+  if (!parsed.data.s3Key.startsWith(`rental-items/${item.id}/`)) {
+    return NextResponse.json({ error: "s3Key invalide pour cet item" }, { status: 400 });
+  }
+
+  const existingCount = await prisma.rentalItemMedia.count({ where: { itemId: item.id } });
+  const media = await prisma.rentalItemMedia.create({
+    data: {
+      itemId: item.id,
+      type: kind === "photo" ? MediaType.PHOTO : MediaType.VIDEO,
+      s3Key: parsed.data.s3Key,
+      s3Url: parsed.data.s3Url,
+      sortOrder: existingCount,
+    },
+    select: { id: true, type: true, s3Url: true, s3Key: true, sortOrder: true },
+  });
+
+  // Si c'est la première photo de l'item, hydrate imageUrl pour rétro-compat
+  // avec les listings (RentalItemCard, /carbets/[slug] panel).
+  if (existingCount === 0 && kind === "photo") {
+    await prisma.rentalItem.update({
+      where: { id: item.id },
+      data: { imageUrl: parsed.data.s3Url },
+    });
+  }
+
+  await recordAudit({
+    scope: "uploads",
+    event: "rental.media.finalize",
+    target: media.id,
+    actorEmail: session.user.email ?? null,
+    details: { itemId: item.id, kind },
+  });
+
+  try {
+    const variants = await generateImageVariants({
+      originalS3Key: parsed.data.s3Key,
+      mime: parsed.data.mime,
+    });
+    if (!variants.skipped) {
+      const okCount = variants.results.filter((r) => r.ok).length;
+      await recordAudit({
+        scope: "uploads",
+        event: "rental.media.variants",
+        target: media.id,
+        actorEmail: session.user.email ?? null,
+        details: { generated: okCount, total: variants.results.length },
+      });
+    }
+  } catch (e) {
+    console.error("[rental-uploads] variants generation error:", e);
+  }
+
+  return NextResponse.json({ media });
+}

src/app/api/uploads/rental-presign/route.ts

@@ -0,0 +1,62 @@
+import { NextResponse } from "next/server";
+import { z } from "zod";
+
+import { auth } from "@/auth";
+import { prisma } from "@/lib/prisma";
+import { canManageRentalProvider } from "@/lib/rental-access";
+import { rateLimitRequest } from "@/lib/rate-limit";
+import { presignRentalItemUpload } from "@/lib/uploads";
+
+export const runtime = "nodejs";
+
+const schema = z.object({
+  itemId: z.string().min(1),
+  mime: z.string().min(3).max(100),
+  sizeBytes: z.coerce.number().int().min(1).max(500 * 1024 * 1024),
+});
+
+export async function POST(req: Request) {
+  const rl = rateLimitRequest(req, "rental-presign", 60_000, 60);
+  if (!rl.ok) {
+    return NextResponse.json(
+      { error: `Trop de demandes. Réessayez dans ${rl.retryAfter}s.` },
+      { status: 429 },
+    );
+  }
+  const session = await auth();
+  if (!session?.user?.id) {
+    return NextResponse.json({ error: "Non authentifié" }, { status: 401 });
+  }
+  const parsed = schema.safeParse(await req.json().catch(() => ({})));
+  if (!parsed.success) {
+    return NextResponse.json(
+      { error: parsed.error.issues[0]?.message ?? "Payload invalide" },
+      { status: 400 },
+    );
+  }
+
+  const item = await prisma.rentalItem.findUnique({
+    where: { id: parsed.data.itemId },
+    select: { id: true, providerId: true },
+  });
+  if (!item) return NextResponse.json({ error: "Item introuvable" }, { status: 404 });
+
+  const allowed = await canManageRentalProvider(
+    session.user.id,
+    session.user.role,
+    item.providerId,
+  );
+  if (!allowed) {
+    return NextResponse.json({ error: "Accès refusé" }, { status: 403 });
+  }
+
+  const result = await presignRentalItemUpload({
+    itemId: item.id,
+    mime: parsed.data.mime,
+    sizeBytes: parsed.data.sizeBytes,
+  });
+  if ("error" in result) {
+    return NextResponse.json({ error: result.error }, { status: 400 });
+  }
+  return NextResponse.json(result);
+}

src/app/espace-prestataire/items/[itemId]/page.tsx

@@ -1,6 +1,7 @@
 import Link from "next/link";
 import { notFound, redirect } from "next/navigation";
 
+import { MediaUploader } from "@/components/MediaUploader";
 import { requireRentalProviderSession, getCurrentRentalProvider } from "@/lib/rental-access";
 import { getHostItem } from "@/lib/rental-host";
 import { RENTAL_CATEGORY_LABEL } from "@/lib/rental-category-labels";
@@ -59,6 +60,16 @@ export default async function EditHostItemPage({ params }: PageProps) {
         <ItemInlineDelete deleteAction={deleteThis} canDelete={item._count.lines === 0} />
       </header>
 
+      <section className="rounded-lg border border-zinc-200 bg-white p-5 shadow-sm">
+        <h2 className="mb-3 text-sm font-semibold uppercase tracking-wider text-zinc-500">
+          Photos & vidéos
+        </h2>
+        <MediaUploader
+          scope={{ kind: "rental-item", itemId: item.id }}
+          initialMedia={item.media}
+        />
+      </section>
+
       <section className="rounded-lg border border-zinc-200 bg-white p-5 shadow-sm">
         <HostItemForm
           action={updateThis}

src/app/materiel/[itemId]/_components/ItemGallery.tsx

@@ -0,0 +1,74 @@
+"use client";
+
+import { useState } from "react";
+
+type Media = { id: string; type: "PHOTO" | "VIDEO"; s3Url: string };
+
+export function ItemGallery({
+  media,
+  fallbackEmoji,
+  alt,
+}: {
+  media: Media[];
+  fallbackEmoji: string;
+  alt: string;
+}) {
+  const [idx, setIdx] = useState(0);
+
+  if (media.length === 0) {
+    return (
+      <div className="flex aspect-[4/3] w-full items-center justify-center rounded-lg bg-zinc-100 text-7xl text-zinc-300">
+        {fallbackEmoji}
+      </div>
+    );
+  }
+
+  const current = media[idx];
+
+  return (
+    <div className="space-y-2">
+      <div className="overflow-hidden rounded-lg bg-zinc-100">
+        {current.type === "VIDEO" ? (
+          <video
+            src={current.s3Url}
+            controls
+            playsInline
+            className="aspect-[4/3] w-full object-cover"
+          />
+        ) : (
+          // eslint-disable-next-line @next/next/no-img-element
+          <img
+            src={current.s3Url}
+            alt={alt}
+            className="aspect-[4/3] w-full object-cover"
+          />
+        )}
+      </div>
+      {media.length > 1 ? (
+        <div className="grid grid-cols-5 gap-1">
+          {media.map((m, i) => (
+            <button
+              key={m.id}
+              type="button"
+              onClick={() => setIdx(i)}
+              className={
+                "aspect-square overflow-hidden rounded-md border transition " +
+                (i === idx
+                  ? "border-emerald-500 ring-2 ring-emerald-200"
+                  : "border-zinc-200 hover:border-zinc-400 opacity-70 hover:opacity-100")
+              }
+              aria-label={`Photo ${i + 1}`}
+            >
+              {m.type === "VIDEO" ? (
+                <div className="flex h-full w-full items-center justify-center bg-zinc-900 text-white">▶</div>
+              ) : (
+                // eslint-disable-next-line @next/next/no-img-element
+                <img src={m.s3Url} alt="" className="h-full w-full object-cover" />
+              )}
+            </button>
+          ))}
+        </div>
+      ) : null}
+    </div>
+  );
+}

src/app/materiel/[itemId]/page.tsx

@@ -8,6 +8,7 @@ import { RENTAL_CATEGORY_LABEL } from "@/lib/rental-category-labels";
 
 import { AddToCart } from "./_components/AddToCart";
 import { AvailabilityPreview } from "./_components/AvailabilityPreview";
+import { ItemGallery } from "./_components/ItemGallery";
 
 export const dynamic = "force-dynamic";
 
@@ -58,19 +59,18 @@ export default async function RentalItemDetailPage({ params }: PageProps) {
             </p>
           </header>
 
-          <div className="mt-5 overflow-hidden rounded-lg bg-zinc-100">
-            {item.imageUrl ? (
-              // eslint-disable-next-line @next/next/no-img-element
-              <img
-                src={item.imageUrl}
-                alt={item.name}
-                className="aspect-[4/3] w-full object-cover"
-              />
-            ) : (
-              <div className="flex aspect-[4/3] w-full items-center justify-center text-7xl text-zinc-300">
-                {categoryEmoji}
-              </div>
-            )}
+          <div className="mt-5">
+            <ItemGallery
+              media={
+                item.media.length > 0
+                  ? item.media
+                  : item.imageUrl
+                    ? [{ id: "legacy", type: "PHOTO", s3Url: item.imageUrl }]
+                    : []
+              }
+              alt={item.name}
+              fallbackEmoji={categoryEmoji}
+            />
           </div>
 
           {item.description ? (

src/components/MediaUploader.tsx

@@ -28,11 +28,53 @@ export type MediaItem = {
   sortOrder: number;
 };
 
+/**
+ * Le composant gère deux périmètres : carbet (par défaut) et item de location.
+ * Les endpoints sont alors `/api/uploads/{rental-}{presign,finalize}`,
+ * `/api/{rental-}media/{id}` et `/api/{rental-}media/reorder` ; la clé de
+ * scope dans les payloads passe de `carbetId` à `itemId`.
+ */
+export type UploaderScope =
+  | { kind: "carbet"; carbetId: string }
+  | { kind: "rental-item"; itemId: string };
+
 type Props = {
-  carbetId: string;
+  scope?: UploaderScope;
+  /** @deprecated — passer `scope={{kind:"carbet", carbetId}}` à la place. */
+  carbetId?: string;
   initialMedia: MediaItem[];
 };
 
+type Endpoints = {
+  presign: string;
+  finalize: string;
+  reorder: string;
+  remove: (mediaId: string) => string;
+  idKey: "carbetId" | "itemId";
+  idValue: string;
+};
+
+function endpointsFor(scope: UploaderScope): Endpoints {
+  if (scope.kind === "carbet") {
+    return {
+      presign: "/api/uploads/presign",
+      finalize: "/api/uploads/finalize",
+      reorder: "/api/media/reorder",
+      remove: (id) => `/api/media/${id}`,
+      idKey: "carbetId",
+      idValue: scope.carbetId,
+    };
+  }
+  return {
+    presign: "/api/uploads/rental-presign",
+    finalize: "/api/uploads/rental-finalize",
+    reorder: "/api/rental-media/reorder",
+    remove: (id) => `/api/rental-media/${id}`,
+    idKey: "itemId",
+    idValue: scope.itemId,
+  };
+}
+
 type UploadEntry = {
   tempId: string;
   name: string;
@@ -45,7 +87,11 @@ type UploadEntry = {
 
 const MAX_PARALLEL = 3;
 
-export function MediaUploader({ carbetId, initialMedia }: Props) {
+export function MediaUploader({ scope, carbetId, initialMedia }: Props) {
+  const endpoints = useMemo(
+    () => endpointsFor(scope ?? { kind: "carbet", carbetId: carbetId ?? "" }),
+    [scope, carbetId],
+  );
   const [items, setItems] = useState<MediaItem[]>(
     [...initialMedia].sort((a, b) => a.sortOrder - b.sortOrder),
   );
@@ -66,13 +112,13 @@ export function MediaUploader({ carbetId, initialMedia }: Props) {
 
   const reorderOnServer = useCallback(
     async (orderedIds: string[]) => {
-      await fetch("/api/media/reorder", {
+      await fetch(endpoints.reorder, {
         method: "POST",
         headers: { "Content-Type": "application/json" },
-        body: JSON.stringify({ carbetId, orderedIds }),
+        body: JSON.stringify({ [endpoints.idKey]: endpoints.idValue, orderedIds }),
       }).catch(() => {});
     },
-    [carbetId],
+    [endpoints],
   );
 
   function onDragEnd(e: DragEndEvent) {
@@ -103,9 +149,9 @@ export function MediaUploader({ carbetId, initialMedia }: Props) {
 
   const removeItem = useCallback(async (id: string) => {
     if (!confirm("Supprimer ce média ?")) return;
-    const res = await fetch(`/api/media/${id}`, { method: "DELETE" });
+    const res = await fetch(endpoints.remove(id), { method: "DELETE" });
     if (res.ok) setItems((prev) => prev.filter((p) => p.id !== id));
-  }, []);
+  }, [endpoints]);
 
   const processFile = useCallback(async function processFile(file: File): Promise<void> {
     const tempId = crypto.randomUUID();
@@ -114,10 +160,14 @@ export function MediaUploader({ carbetId, initialMedia }: Props) {
       { tempId, name: file.name, sizeBytes: file.size, mime: file.type, progress: 0, done: false },
     ]);
     try {
-      const presignRes = await fetch("/api/uploads/presign", {
+      const presignRes = await fetch(endpoints.presign, {
         method: "POST",
         headers: { "Content-Type": "application/json" },
-        body: JSON.stringify({ carbetId, mime: file.type, sizeBytes: file.size }),
+        body: JSON.stringify({
+          [endpoints.idKey]: endpoints.idValue,
+          mime: file.type,
+          sizeBytes: file.size,
+        }),
       });
       const presign = await presignRes.json();
       if (!presignRes.ok) throw new Error(presign?.error || "presign refusé");
@@ -138,11 +188,11 @@ export function MediaUploader({ carbetId, initialMedia }: Props) {
         xhr.send(file);
       });
 
-      const finalizeRes = await fetch("/api/uploads/finalize", {
+      const finalizeRes = await fetch(endpoints.finalize, {
         method: "POST",
         headers: { "Content-Type": "application/json" },
         body: JSON.stringify({
-          carbetId,
+          [endpoints.idKey]: endpoints.idValue,
           s3Key: presign.s3Key,
           s3Url: presign.publicUrl,
           mime: file.type,
@@ -160,7 +210,7 @@ export function MediaUploader({ carbetId, initialMedia }: Props) {
       const msg = e instanceof Error ? e.message : String(e);
       setUploads((u) => u.map((x) => (x.tempId === tempId ? { ...x, error: msg } : x)));
     }
-  }, [carbetId]);
+  }, [endpoints]);
 
   const popQueueRef = useRef<() => void>(() => {});
   const popQueue = useCallback(() => {

src/lib/admin/rental-items.ts

@@ -80,6 +80,10 @@ export async function getRentalItemForAdmin(id: string) {
     where: { id },
     include: {
       provider: { select: { id: true, name: true, isSystemD: true } },
+      media: {
+        orderBy: { sortOrder: "asc" },
+        select: { id: true, type: true, s3Url: true, s3Key: true, sortOrder: true },
+      },
     },
   });
 }

src/lib/rental-host.ts

@@ -115,6 +115,10 @@ export async function getHostItem(providerId: string, itemId: string) {
     include: {
       availabilities: { orderBy: { startDate: "asc" } },
       _count: { select: { lines: true } },
+      media: {
+        orderBy: { sortOrder: "asc" },
+        select: { id: true, type: true, s3Url: true, s3Key: true, sortOrder: true },
+      },
     },
   });
 }

src/lib/rentals-public.ts

@@ -91,6 +91,10 @@ export async function getPublicRentalItem(id: string) {
           contactPhone: true,
         },
       },
+      media: {
+        orderBy: { sortOrder: "asc" },
+        select: { id: true, type: true, s3Url: true, sortOrder: true },
+      },
     },
   });
 }

src/lib/uploads.ts

@@ -100,5 +100,30 @@ export async function presignCarbetUpload(opts: {
   return { s3Key, uploadUrl, publicUrl, expiresIn: 600 };
 }
 
+export async function presignRentalItemUpload(opts: {
+  itemId: string;
+  mime: string;
+  sizeBytes: number;
+}): Promise<PresignResult | { error: string }> {
+  const kind = classifyMime(opts.mime);
+  if (!kind) return { error: `Type non supporté : ${opts.mime}` };
+  const max = maxBytesFor(kind);
+  if (opts.sizeBytes > max) {
+    return { error: `Fichier trop volumineux (${Math.round(opts.sizeBytes / 1_000_000)} Mo, max ${Math.round(max / 1_000_000)} Mo).` };
+  }
+  const id = crypto.randomBytes(12).toString("hex");
+  const ext = extensionFor(opts.mime);
+  const s3Key = `rental-items/${opts.itemId}/${Date.now()}-${id}.${ext}`;
+
+  const cmd = new PutObjectCommand({
+    Bucket: BUCKET,
+    Key: s3Key,
+    ContentType: opts.mime,
+  });
+  const uploadUrl = await getSignedUrl(s3Presign, cmd, { expiresIn: 600 });
+  const publicUrl = `${PUBLIC_BASE_EXTERNAL.replace(/\/$/, "")}/${s3Key}`;
+  return { s3Key, uploadUrl, publicUrl, expiresIn: 600 };
+}
+
 export { s3Internal };
 export { BUCKET as UPLOAD_BUCKET };