fix: resolve structured data validation errors across app, tutorial, and event pages

app/[locale]/apps/[application]/page-jsonld.tsx

@@ -1,4 +1,4 @@
-import { AppData, FileContributor } from "@/lib/types"
+import { AppCategory, AppData, FileContributor } from "@/lib/types"
 
 import PageJsonLD from "@/components/PageJsonLD"
 
@@ -8,6 +8,19 @@ import {
 } from "@/lib/utils/jsonld"
 import { normalizeUrlForJsonLd, slugify } from "@/lib/utils/url"
 
+// Map internal app categories to schema.org enumerated applicationCategory values
+// https://schema.org/applicationCategory
+const APPLICATION_CATEGORY_MAP: Record<AppCategory, string> = {
+  DeFi: "FinanceApplication",
+  Collectibles: "EntertainmentApplication",
+  Social: "SocialNetworkingApplication",
+  Gaming: "GameApplication",
+  Bridge: "UtilitiesApplication",
+  Productivity: "BusinessApplication",
+  Privacy: "SecurityApplication",
+  DAO: "BusinessApplication",
+}
+
 export default async function AppsAppJsonLD({
   locale,
   app,
@@ -71,15 +84,22 @@ export default async function AppsAppJsonLD({
         mainEntity: { "@id": `${url}#applications` },
       },
       {
-        "@type": "SoftwareApplication",
+        "@type": "WebApplication",
         "@id": `${url}#applications`,
         name: app.name,
         description: app.description,
         url: app.url,
         image: app.image,
-        applicationCategory: app.category,
+        applicationCategory:
+          APPLICATION_CATEGORY_MAP[app.category] ?? "UtilitiesApplication",
         applicationSubCategory: app.subCategory.join(", "),
         operatingSystem: "Web Browser",
+        offers: {
+          "@type": "Offer",
+          price: "0",
+          priceCurrency: "USD",
+          availability: "https://schema.org/OnlineOnly",
+        },
         author: [
           {
             "@type": "Organization",

app/[locale]/community/events/page-jsonld.tsx

@@ -45,7 +45,9 @@ function buildHubSchemaNodes(
   if (schema.address) {
     placeNode.address = {
       "@type": "PostalAddress" as const,
-      streetAddress: schema.address.streetAddress,
+      ...(schema.address.streetAddress && {
+        streetAddress: schema.address.streetAddress,
+      }),
       addressLocality: schema.address.addressLocality,
       ...(schema.address.postalCode && {
         postalCode: schema.address.postalCode,
@@ -56,7 +58,7 @@ function buildHubSchemaNodes(
 
   if (schema.containedInPlace) {
     placeNode.containedInPlace = {
-      "@type": "LocalBusiness" as const,
+      "@type": "Place" as const,
       name: schema.containedInPlace.name,
       ...(schema.containedInPlace.url && {
         url: schema.containedInPlace.url,
@@ -69,6 +71,8 @@ function buildHubSchemaNodes(
     "@id": seriesId,
     name: schema.eventSeriesName ?? "Open Ethereum Coworking Hours",
     description: schema.eventDescription,
+    startDate:
+      schema.schedule.startDate ?? new Date().toISOString().split("T")[0],
     isAccessibleForFree: true,
     url: hub.coworkingSignupUrl,
     eventStatus: "https://schema.org/EventScheduled",

app/[locale]/developers/tutorials/page-jsonld.tsx

@@ -87,12 +87,15 @@ export default async function TutorialsPageJsonLD({
             "@type": "ListItem",
             position: index + 1,
             name: tutorial.title,
-            url: tutorial.href,
+            url: normalizeUrlForJsonLd(locale, tutorial.href),
             item: {
               "@type": "Course",
               name: tutorial.title,
-              description: tutorial.description,
-              url: tutorial.href,
+              description:
+                tutorial.description.length > 60
+                  ? tutorial.description.slice(0, 57) + "..."
+                  : tutorial.description,
+              url: normalizeUrlForJsonLd(locale, tutorial.href),
               provider: ethereumFoundationOrganization,
               courseMode: "online",
               educationalLevel: tutorial.skill ?? "beginner",

src/data/community-hub-schemas.ts

@@ -13,7 +13,7 @@ export type CommunityHubSchemaData = {
   eventSeriesName?: string
   eventDescription: string
   address?: {
-    streetAddress: string
+    streetAddress?: string
     addressLocality: string
     postalCode?: string
     addressCountry: string
@@ -68,6 +68,10 @@ export const communityHubSchemas: Record<string, CommunityHubSchemaData> = {
     eventSeriesName: "Ethereum Community Hub Berlin -- Co-working Wednesdays",
     eventDescription:
       "Every Wednesday the Ethereum Foundation office opens for builders, researchers, creators, students, and explorers to co-work, connect, and collaborate.",
+    address: {
+      addressLocality: "Berlin",
+      addressCountry: "DE",
+    },
     schedule: {
       startTime: "10:00",
       endTime: "20:00",