feat: integrate SEO system into pages

- Add OrganizationSchema to root layout
- Add ProductSchema with metadata to product pages
- Add enhanced metadata to homepage with keywords
- Add enhanced metadata to products listing page
- Add noindex to checkout page via layout
- Implement canonical URLs, OpenGraph, and Twitter cards

src/app/[locale]/checkout/layout.tsx

@@ -0,0 +1,26 @@
+import type { Metadata } from "next";
+import { getPageKeywords } from "@/lib/seo/keywords";
+import { isValidLocale, DEFAULT_LOCALE } from "@/lib/i18n/locales";
+
+export async function generateMetadata({ params }: { params: Promise<{ locale: string }> }): Promise<Metadata> {
+  const { locale } = await params;
+  const validLocale = isValidLocale(locale) ? locale : DEFAULT_LOCALE;
+  const keywords = getPageKeywords(validLocale, 'checkout');
+  
+  return {
+    title: keywords.metaTitle,
+    description: keywords.metaDescription,
+    robots: {
+      index: false,
+      follow: false,
+    },
+  };
+}
+
+export default function CheckoutLayout({
+  children,
+}: {
+  children: React.ReactNode;
+}) {
+  return children;
+}

src/app/[locale]/page.tsx

@@ -12,15 +12,49 @@ import ProblemSection from "@/components/home/ProblemSection";
 import HowItWorks from "@/components/home/HowItWorks";
 import { getPageMetadata } from "@/lib/i18n/pageMetadata";
 import { isValidLocale, DEFAULT_LOCALE, getSaleorLocale, type Locale } from "@/lib/i18n/locales";
+import { getPageKeywords, getBrandKeywords } from "@/lib/seo/keywords";
+import { Metadata } from "next";
 
-export async function generateMetadata({ params }: { params: Promise<{ locale: string }> }) {
+const baseUrl = process.env.NEXT_PUBLIC_SITE_URL || "https://dev.manoonoils.com";
+
+export async function generateMetadata({ params }: { params: Promise<{ locale: string }> }): Promise<Metadata> {
   const { locale } = await params;
   const validLocale = isValidLocale(locale) ? locale : DEFAULT_LOCALE;
   const metadata = getPageMetadata(validLocale as Locale);
+  const keywords = getPageKeywords(validLocale as Locale, 'home');
+  const brand = getBrandKeywords(validLocale as Locale);
   setRequestLocale(validLocale);
+  
+  // Build canonical URL
+  const localePrefix = validLocale === DEFAULT_LOCALE ? "" : `/${validLocale}`;
+  const canonicalUrl = `${baseUrl}${localePrefix || '/'}`;
+  
   return {
     title: metadata.home.title,
     description: metadata.home.description,
+    keywords: [...keywords.primary, ...keywords.secondary].join(', '),
+    alternates: {
+      canonical: canonicalUrl,
+    },
+    openGraph: {
+      title: metadata.home.title,
+      description: metadata.home.description,
+      type: 'website',
+      url: canonicalUrl,
+      images: [{
+        url: `${baseUrl}/og-image.jpg`,
+        width: 1200,
+        height: 630,
+        alt: brand.tagline,
+      }],
+      locale: validLocale,
+    },
+    twitter: {
+      card: 'summary_large_image',
+      title: metadata.home.title,
+      description: metadata.home.description,
+      images: [`${baseUrl}/og-image.jpg`],
+    },
   };
 }
 

src/app/[locale]/products/[slug]/page.tsx

@@ -7,6 +7,9 @@ import type { Product } from "@/types/saleor";
 import { routing } from "@/i18n/routing";
 import { getPageMetadata } from "@/lib/i18n/pageMetadata";
 import { isValidLocale, DEFAULT_LOCALE, getSaleorLocale, type Locale } from "@/lib/i18n/locales";
+import { ProductSchema } from "@/components/seo";
+import { getPageKeywords } from "@/lib/seo/keywords";
+import { Metadata } from "next";
 
 interface ProductPageProps {
   params: Promise<{ locale: string; slug: string }>;
@@ -30,7 +33,9 @@ export async function generateStaticParams() {
   return params;
 }
 
-export async function generateMetadata({ params }: ProductPageProps) {
+const baseUrl = process.env.NEXT_PUBLIC_SITE_URL || "https://dev.manoonoils.com";
+
+export async function generateMetadata({ params }: ProductPageProps): Promise<Metadata> {
   const { locale, slug } = await params;
   const validLocale = isValidLocale(locale) ? locale : DEFAULT_LOCALE;
   const metadata = getPageMetadata(validLocale as Locale);
@@ -44,10 +49,41 @@ export async function generateMetadata({ params }: ProductPageProps) {
   }
 
   const localized = getLocalizedProduct(product, saleorLocale);
+  const keywords = getPageKeywords(validLocale as Locale, 'product');
+  
+  // Build canonical URL
+  const localePrefix = validLocale === DEFAULT_LOCALE ? "" : `/${validLocale}`;
+  const canonicalUrl = `${baseUrl}${localePrefix}/products/${slug}`;
+  
+  // Get product image for OpenGraph
+  const productImage = product.media?.[0]?.url || `${baseUrl}/og-image.jpg`;
 
   return {
     title: localized.name,
     description: localized.seoDescription || localized.description?.slice(0, 160),
+    keywords: [...keywords.primary, ...keywords.secondary].join(', '),
+    alternates: {
+      canonical: canonicalUrl,
+    },
+    openGraph: {
+      title: localized.name,
+      description: localized.seoDescription || localized.description?.slice(0, 160),
+      type: 'website',
+      url: canonicalUrl,
+      images: [{
+        url: productImage,
+        width: 1200,
+        height: 630,
+        alt: localized.name,
+      }],
+      locale: validLocale,
+    },
+    twitter: {
+      card: 'summary_large_image',
+      title: localized.name,
+      description: localized.seoDescription || localized.description?.slice(0, 160),
+      images: [productImage],
+    },
   };
 }
 
@@ -108,8 +144,29 @@ export default async function ProductPage({ params }: ProductPageProps) {
     });
   } catch (e) {}
 
+  // Prepare product data for schema
+  const firstVariant = product.variants?.[0];
+  const productSchemaData = {
+    name: product.name,
+    slug: product.slug,
+    description: product.description || product.name,
+    images: product.media?.map(m => m.url) || [`${baseUrl}/og-image.jpg`],
+    price: {
+      amount: firstVariant?.pricing?.price?.gross?.amount || 0,
+      currency: firstVariant?.pricing?.price?.gross?.currency || 'RSD',
+    },
+    sku: firstVariant?.sku,
+    availability: firstVariant?.quantityAvailable && firstVariant.quantityAvailable > 0 ? 'InStock' as const : 'OutOfStock' as const,
+  };
+
   return (
     <>
+      <ProductSchema
+        baseUrl={baseUrl}
+        locale={validLocale as Locale}
+        product={productSchemaData}
+        category="antiAging"
+      />
       <Header locale={locale} />
       <main className="min-h-screen bg-white">
         <ProductDetail

src/app/[locale]/products/page.tsx

@@ -6,18 +6,45 @@ import ProductCard from "@/components/product/ProductCard";
 import { ChevronDown } from "lucide-react";
 import { getPageMetadata } from "@/lib/i18n/pageMetadata";
 import { isValidLocale, DEFAULT_LOCALE, getSaleorLocale, type Locale } from "@/lib/i18n/locales";
+import { getPageKeywords } from "@/lib/seo/keywords";
+import { Metadata } from "next";
+
+const baseUrl = process.env.NEXT_PUBLIC_SITE_URL || "https://dev.manoonoils.com";
 
 interface ProductsPageProps {
   params: Promise<{ locale: string }>;
 }
 
-export async function generateMetadata({ params }: ProductsPageProps) {
+export async function generateMetadata({ params }: ProductsPageProps): Promise<Metadata> {
   const { locale } = await params;
   const validLocale = isValidLocale(locale) ? locale : DEFAULT_LOCALE;
   const metadata = getPageMetadata(validLocale as Locale);
+  const keywords = getPageKeywords(validLocale as Locale, 'products');
+  
+  // Build canonical URL
+  const localePrefix = validLocale === DEFAULT_LOCALE ? "" : `/${validLocale}`;
+  const canonicalUrl = `${baseUrl}${localePrefix}/products`;
+  
   return {
     title: metadata.products.title,
     description: metadata.products.description,
+    keywords: [...keywords.primary, ...keywords.secondary].join(', '),
+    alternates: {
+      canonical: canonicalUrl,
+    },
+    openGraph: {
+      title: metadata.products.title,
+      description: metadata.products.description,
+      type: 'website',
+      url: canonicalUrl,
+      images: [{
+        url: `${baseUrl}/og-image.jpg`,
+        width: 1200,
+        height: 630,
+        alt: metadata.products.title,
+      }],
+      locale: validLocale,
+    },
   };
 }