feat(media): add type-specific upload preset validation

TODO.md

@@ -144,7 +144,7 @@ This file is the single source of truth for roadmap and delivery progress.
 - [x] [P1] Portfolio grouping primitives (galleries, albums, categories, tags) with ordering/visibility controls
 - [x] [P1] Artwork refinement fields (medium, dimensions, year, framing, availability, price visibility)
 - [x] [P1] Artwork rendition management (thumbnail, card, full, retina/custom sizes)
-- [ ] [P1] Type-specific processing presets (artwork/banner/promo/video/gif) with validation rules
+- [x] [P1] Type-specific processing presets (artwork/banner/promo/video/gif) with validation rules
 - [ ] [P1] Users management (invite, roles, status)
 - [ ] [P1] Disable/ban user function and enforcement in auth/session checks
 - [~] [P1] Owner/support protection rules in user management actions (cannot delete/demote)
@@ -364,6 +364,7 @@ This file is the single source of truth for roadmap and delivery progress.
 - [2026-02-12] Portfolio grouping controls completed in admin `/portfolio`: galleries/albums/categories/tags now support visibility and sort-order management (create/update/delete), and public tag filters now respect visibility.
 - [2026-02-12] Artwork refinement baseline completed: admin `/portfolio` now captures/edits medium, dimensions, year, framing, availability, publish state, and optional price visibility (`priceAmountCents` + `priceCurrency`), with public artwork detail rendering visible prices only.
 - [2026-02-12] Artwork rendition management completed: admin `/portfolio` supports `thumbnail/card/full/retina/custom` slot assignment with dimensions and primary flag, plus per-artwork rendition listing and delete controls.
+- [2026-02-12] Media type presets baseline completed in upload API: server-side validation now uses shared per-type rules (mime + max size) for `artwork/banner/promotion/video/gif/generic`, with optional env cap override via `CMS_MEDIA_UPLOAD_MAX_BYTES`.
 - [2026-02-12] Public UX pass: commission request flow now reports explicit invalid budget range errors, and header navigation now falls back to localized defaults (`home`, `portfolio`, `news`, `commissions`) when no CMS menu exists; seed data now creates those default menu entries.
 - [2026-02-12] Added `e2e/public-rendering.pw.ts` web coverage for fallback navigation visibility, portfolio routes, and commission submission validation (invalid budget range + successful submission path).
 - [2026-02-12] Testing execution is temporarily paused for delivery velocity: root test scripts are stubbed and CI test steps are disabled; all testing backlog is consolidated under `MVP 3: Testing and Quality`.

apps/admin/src/app/api/media/upload/route.ts

@@ -1,4 +1,9 @@
 import { randomUUID } from "node:crypto"
+import {
+  getMediaUploadMaxBytes,
+  isMimeAllowedForMediaType,
+  mediaAssetTypeSchema,
+} from "@cms/content"
 import { hasPermission } from "@cms/content/rbac"
 import { createMediaAsset } from "@cms/db"
 
@@ -7,33 +12,7 @@ import { storeUpload } from "@/lib/media/storage"
 
 export const runtime = "nodejs"
 
-const MAX_UPLOAD_BYTES = Number(process.env.CMS_MEDIA_UPLOAD_MAX_BYTES ?? 25 * 1024 * 1024)
-
-type AllowedRule = {
-  mimePrefix?: string
-  mimeExact?: string[]
-}
-
-const ALLOWED_MIME_BY_TYPE: Record<string, AllowedRule> = {
-  artwork: {
-    mimePrefix: "image/",
-  },
-  banner: {
-    mimePrefix: "image/",
-  },
-  promotion: {
-    mimePrefix: "image/",
-  },
-  video: {
-    mimePrefix: "video/",
-  },
-  gif: {
-    mimeExact: ["image/gif"],
-  },
-  generic: {
-    mimePrefix: "",
-  },
-}
+const MAX_UPLOAD_BYTES_OVERRIDE = Number(process.env.CMS_MEDIA_UPLOAD_MAX_BYTES ?? 0)
 
 function parseTextField(formData: FormData, field: string): string {
   const value = formData.get(field)
@@ -88,24 +67,6 @@ function deriveTitleFromFilename(fileName: string): string {
   return normalized.length > 0 ? normalized : "Untitled media"
 }
 
-function isMimeAllowed(mediaType: string, mimeType: string): boolean {
-  const rule = ALLOWED_MIME_BY_TYPE[mediaType]
-
-  if (!rule) {
-    return false
-  }
-
-  if (rule.mimeExact?.includes(mimeType)) {
-    return true
-  }
-
-  if (rule.mimePrefix === "") {
-    return true
-  }
-
-  return rule.mimePrefix ? mimeType.startsWith(rule.mimePrefix) : false
-}
-
 function badRequest(message: string): Response {
   return Response.json(
     {
@@ -147,12 +108,13 @@ export async function POST(request: Request): Promise<Response> {
     return badRequest("Invalid form payload.")
   }
 
-  const type = parseTextField(formData, "type")
+  const parsedType = mediaAssetTypeSchema.safeParse(parseTextField(formData, "type"))
   const fileEntry = formData.get("file")
 
-  if (!type) {
+  if (!parsedType.success) {
     return badRequest("Type is required.")
   }
+  const type = parsedType.data
 
   if (!(fileEntry instanceof File)) {
     return badRequest("File is required.")
@@ -162,13 +124,17 @@ export async function POST(request: Request): Promise<Response> {
     return badRequest("File is empty.")
   }
 
-  if (fileEntry.size > MAX_UPLOAD_BYTES) {
+  const typeMaxBytes = getMediaUploadMaxBytes(type)
+  const effectiveMaxBytes =
+    MAX_UPLOAD_BYTES_OVERRIDE > 0 ? Math.min(MAX_UPLOAD_BYTES_OVERRIDE, typeMaxBytes) : typeMaxBytes
+
+  if (fileEntry.size > effectiveMaxBytes) {
     return badRequest(
-      `File is too large. Maximum upload is ${Math.floor(MAX_UPLOAD_BYTES / 1024 / 1024)} MB.`,
+      `File is too large for ${type}. Maximum upload is ${Math.floor(effectiveMaxBytes / 1024 / 1024)} MB.`,
     )
   }
 
-  if (!isMimeAllowed(type, fileEntry.type)) {
+  if (!isMimeAllowedForMediaType(type, fileEntry.type)) {
     return badRequest(`File type ${fileEntry.type || "unknown"} is not allowed for ${type}.`)
   }
 

packages/content/src/media.ts

@@ -9,6 +9,56 @@ export const mediaAssetTypeSchema = z.enum([
   "generic",
 ])
 
+export type MediaUploadRule = {
+  maxBytes: number
+  allowedMimePrefix?: string
+  allowedMimeExact?: string[]
+}
+
+export const mediaUploadRulesByType: Record<MediaAssetType, MediaUploadRule> = {
+  artwork: {
+    maxBytes: 40 * 1024 * 1024,
+    allowedMimePrefix: "image/",
+  },
+  banner: {
+    maxBytes: 20 * 1024 * 1024,
+    allowedMimePrefix: "image/",
+  },
+  promotion: {
+    maxBytes: 20 * 1024 * 1024,
+    allowedMimePrefix: "image/",
+  },
+  video: {
+    maxBytes: 250 * 1024 * 1024,
+    allowedMimePrefix: "video/",
+  },
+  gif: {
+    maxBytes: 40 * 1024 * 1024,
+    allowedMimeExact: ["image/gif"],
+  },
+  generic: {
+    maxBytes: 50 * 1024 * 1024,
+  },
+}
+
+export function isMimeAllowedForMediaType(type: MediaAssetType, mimeType: string): boolean {
+  const rule = mediaUploadRulesByType[type]
+
+  if (rule.allowedMimeExact?.includes(mimeType)) {
+    return true
+  }
+
+  if (rule.allowedMimePrefix) {
+    return mimeType.startsWith(rule.allowedMimePrefix)
+  }
+
+  return true
+}
+
+export function getMediaUploadMaxBytes(type: MediaAssetType): number {
+  return mediaUploadRulesByType[type].maxBytes
+}
+
 export const artworkRenditionSlotSchema = z.enum(["thumbnail", "card", "full", "retina", "custom"])
 
 export const createMediaAssetInputSchema = z.object({