feat(front-end): back-office desing improvements

2026-03-10 10:53:30 +01:00
parent a212a1d8cc
commit e747a9820e
47 changed files with 4861 additions and 310 deletions
--- a/backend/src/main/java/com/printcalculator/dto/AdminShopProductDto.java
+++ b/backend/src/main/java/com/printcalculator/dto/AdminShopProductDto.java
@@ -12,8 +12,20 @@ public class AdminShopProductDto {
    private String categorySlug;
    private String slug;
    private String name;
+    private String nameIt;
+    private String nameEn;
+    private String nameDe;
+    private String nameFr;
    private String excerpt;
+    private String excerptIt;
+    private String excerptEn;
+    private String excerptDe;
+    private String excerptFr;
    private String description;
+    private String descriptionIt;
+    private String descriptionEn;
+    private String descriptionDe;
+    private String descriptionFr;
    private String seoTitle;
    private String seoDescription;
    private String ogTitle;
@@ -83,6 +95,38 @@ public class AdminShopProductDto {
        this.name = name;
    }

+    public String getNameIt() {
+        return nameIt;
+    }
+
+    public void setNameIt(String nameIt) {
+        this.nameIt = nameIt;
+    }
+
+    public String getNameEn() {
+        return nameEn;
+    }
+
+    public void setNameEn(String nameEn) {
+        this.nameEn = nameEn;
+    }
+
+    public String getNameDe() {
+        return nameDe;
+    }
+
+    public void setNameDe(String nameDe) {
+        this.nameDe = nameDe;
+    }
+
+    public String getNameFr() {
+        return nameFr;
+    }
+
+    public void setNameFr(String nameFr) {
+        this.nameFr = nameFr;
+    }
+
    public String getExcerpt() {
        return excerpt;
    }
@@ -91,6 +135,38 @@ public class AdminShopProductDto {
        this.excerpt = excerpt;
    }

+    public String getExcerptIt() {
+        return excerptIt;
+    }
+
+    public void setExcerptIt(String excerptIt) {
+        this.excerptIt = excerptIt;
+    }
+
+    public String getExcerptEn() {
+        return excerptEn;
+    }
+
+    public void setExcerptEn(String excerptEn) {
+        this.excerptEn = excerptEn;
+    }
+
+    public String getExcerptDe() {
+        return excerptDe;
+    }
+
+    public void setExcerptDe(String excerptDe) {
+        this.excerptDe = excerptDe;
+    }
+
+    public String getExcerptFr() {
+        return excerptFr;
+    }
+
+    public void setExcerptFr(String excerptFr) {
+        this.excerptFr = excerptFr;
+    }
+
    public String getDescription() {
        return description;
    }
@@ -99,6 +175,38 @@ public class AdminShopProductDto {
        this.description = description;
    }

+    public String getDescriptionIt() {
+        return descriptionIt;
+    }
+
+    public void setDescriptionIt(String descriptionIt) {
+        this.descriptionIt = descriptionIt;
+    }
+
+    public String getDescriptionEn() {
+        return descriptionEn;
+    }
+
+    public void setDescriptionEn(String descriptionEn) {
+        this.descriptionEn = descriptionEn;
+    }
+
+    public String getDescriptionDe() {
+        return descriptionDe;
+    }
+
+    public void setDescriptionDe(String descriptionDe) {
+        this.descriptionDe = descriptionDe;
+    }
+
+    public String getDescriptionFr() {
+        return descriptionFr;
+    }
+
+    public void setDescriptionFr(String descriptionFr) {
+        this.descriptionFr = descriptionFr;
+    }
+
    public String getSeoTitle() {
        return seoTitle;
    }
--- a/backend/src/main/java/com/printcalculator/dto/AdminUpsertShopProductRequest.java
+++ b/backend/src/main/java/com/printcalculator/dto/AdminUpsertShopProductRequest.java
@@ -7,8 +7,20 @@ public class AdminUpsertShopProductRequest {
    private UUID categoryId;
    private String slug;
    private String name;
+    private String nameIt;
+    private String nameEn;
+    private String nameDe;
+    private String nameFr;
    private String excerpt;
+    private String excerptIt;
+    private String excerptEn;
+    private String excerptDe;
+    private String excerptFr;
    private String description;
+    private String descriptionIt;
+    private String descriptionEn;
+    private String descriptionDe;
+    private String descriptionFr;
    private String seoTitle;
    private String seoDescription;
    private String ogTitle;
@@ -43,6 +55,38 @@ public class AdminUpsertShopProductRequest {
        this.name = name;
    }

+    public String getNameIt() {
+        return nameIt;
+    }
+
+    public void setNameIt(String nameIt) {
+        this.nameIt = nameIt;
+    }
+
+    public String getNameEn() {
+        return nameEn;
+    }
+
+    public void setNameEn(String nameEn) {
+        this.nameEn = nameEn;
+    }
+
+    public String getNameDe() {
+        return nameDe;
+    }
+
+    public void setNameDe(String nameDe) {
+        this.nameDe = nameDe;
+    }
+
+    public String getNameFr() {
+        return nameFr;
+    }
+
+    public void setNameFr(String nameFr) {
+        this.nameFr = nameFr;
+    }
+
    public String getExcerpt() {
        return excerpt;
    }
@@ -51,6 +95,38 @@ public class AdminUpsertShopProductRequest {
        this.excerpt = excerpt;
    }

+    public String getExcerptIt() {
+        return excerptIt;
+    }
+
+    public void setExcerptIt(String excerptIt) {
+        this.excerptIt = excerptIt;
+    }
+
+    public String getExcerptEn() {
+        return excerptEn;
+    }
+
+    public void setExcerptEn(String excerptEn) {
+        this.excerptEn = excerptEn;
+    }
+
+    public String getExcerptDe() {
+        return excerptDe;
+    }
+
+    public void setExcerptDe(String excerptDe) {
+        this.excerptDe = excerptDe;
+    }
+
+    public String getExcerptFr() {
+        return excerptFr;
+    }
+
+    public void setExcerptFr(String excerptFr) {
+        this.excerptFr = excerptFr;
+    }
+
    public String getDescription() {
        return description;
    }
@@ -59,6 +135,38 @@ public class AdminUpsertShopProductRequest {
        this.description = description;
    }

+    public String getDescriptionIt() {
+        return descriptionIt;
+    }
+
+    public void setDescriptionIt(String descriptionIt) {
+        this.descriptionIt = descriptionIt;
+    }
+
+    public String getDescriptionEn() {
+        return descriptionEn;
+    }
+
+    public void setDescriptionEn(String descriptionEn) {
+        this.descriptionEn = descriptionEn;
+    }
+
+    public String getDescriptionDe() {
+        return descriptionDe;
+    }
+
+    public void setDescriptionDe(String descriptionDe) {
+        this.descriptionDe = descriptionDe;
+    }
+
+    public String getDescriptionFr() {
+        return descriptionFr;
+    }
+
+    public void setDescriptionFr(String descriptionFr) {
+        this.descriptionFr = descriptionFr;
+    }
+
    public String getSeoTitle() {
        return seoTitle;
    }
--- a/backend/src/main/java/com/printcalculator/entity/ShopProduct.java
+++ b/backend/src/main/java/com/printcalculator/entity/ShopProduct.java
@@ -15,6 +15,7 @@ import jakarta.persistence.Table;
 import org.hibernate.annotations.ColumnDefault;

 import java.time.OffsetDateTime;
+import java.util.List;
 import java.util.UUID;

@Entity
@@ -23,6 +24,8 @@ import java.util.UUID;
        @Index(name = "ix_shop_product_featured_sort", columnList = "is_featured, is_active, sort_order")
 })
 public class ShopProduct {
+    public static final List<String> SUPPORTED_LANGUAGES = List.of("it", "en", "de", "fr");
+
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    @Column(name = "shop_product_id", nullable = false)
@@ -38,12 +41,48 @@ public class ShopProduct {
    @Column(name = "name", nullable = false, length = Integer.MAX_VALUE)
    private String name;

+    @Column(name = "name_it", length = Integer.MAX_VALUE)
+    private String nameIt;
+
+    @Column(name = "name_en", length = Integer.MAX_VALUE)
+    private String nameEn;
+
+    @Column(name = "name_de", length = Integer.MAX_VALUE)
+    private String nameDe;
+
+    @Column(name = "name_fr", length = Integer.MAX_VALUE)
+    private String nameFr;
+
    @Column(name = "excerpt", length = Integer.MAX_VALUE)
    private String excerpt;

+    @Column(name = "excerpt_it", length = Integer.MAX_VALUE)
+    private String excerptIt;
+
+    @Column(name = "excerpt_en", length = Integer.MAX_VALUE)
+    private String excerptEn;
+
+    @Column(name = "excerpt_de", length = Integer.MAX_VALUE)
+    private String excerptDe;
+
+    @Column(name = "excerpt_fr", length = Integer.MAX_VALUE)
+    private String excerptFr;
+
    @Column(name = "description", length = Integer.MAX_VALUE)
    private String description;

+    @Column(name = "description_it", length = Integer.MAX_VALUE)
+    private String descriptionIt;
+
+    @Column(name = "description_en", length = Integer.MAX_VALUE)
+    private String descriptionEn;
+
+    @Column(name = "description_de", length = Integer.MAX_VALUE)
+    private String descriptionDe;
+
+    @Column(name = "description_fr", length = Integer.MAX_VALUE)
+    private String descriptionFr;
+
    @Column(name = "seo_title", length = Integer.MAX_VALUE)
    private String seoTitle;

@@ -152,6 +191,38 @@ public class ShopProduct {
        this.name = name;
    }

+    public String getNameIt() {
+        return nameIt;
+    }
+
+    public void setNameIt(String nameIt) {
+        this.nameIt = nameIt;
+    }
+
+    public String getNameEn() {
+        return nameEn;
+    }
+
+    public void setNameEn(String nameEn) {
+        this.nameEn = nameEn;
+    }
+
+    public String getNameDe() {
+        return nameDe;
+    }
+
+    public void setNameDe(String nameDe) {
+        this.nameDe = nameDe;
+    }
+
+    public String getNameFr() {
+        return nameFr;
+    }
+
+    public void setNameFr(String nameFr) {
+        this.nameFr = nameFr;
+    }
+
    public String getExcerpt() {
        return excerpt;
    }
@@ -160,6 +231,38 @@ public class ShopProduct {
        this.excerpt = excerpt;
    }

+    public String getExcerptIt() {
+        return excerptIt;
+    }
+
+    public void setExcerptIt(String excerptIt) {
+        this.excerptIt = excerptIt;
+    }
+
+    public String getExcerptEn() {
+        return excerptEn;
+    }
+
+    public void setExcerptEn(String excerptEn) {
+        this.excerptEn = excerptEn;
+    }
+
+    public String getExcerptDe() {
+        return excerptDe;
+    }
+
+    public void setExcerptDe(String excerptDe) {
+        this.excerptDe = excerptDe;
+    }
+
+    public String getExcerptFr() {
+        return excerptFr;
+    }
+
+    public void setExcerptFr(String excerptFr) {
+        this.excerptFr = excerptFr;
+    }
+
    public String getDescription() {
        return description;
    }
@@ -168,6 +271,38 @@ public class ShopProduct {
        this.description = description;
    }

+    public String getDescriptionIt() {
+        return descriptionIt;
+    }
+
+    public void setDescriptionIt(String descriptionIt) {
+        this.descriptionIt = descriptionIt;
+    }
+
+    public String getDescriptionEn() {
+        return descriptionEn;
+    }
+
+    public void setDescriptionEn(String descriptionEn) {
+        this.descriptionEn = descriptionEn;
+    }
+
+    public String getDescriptionDe() {
+        return descriptionDe;
+    }
+
+    public void setDescriptionDe(String descriptionDe) {
+        this.descriptionDe = descriptionDe;
+    }
+
+    public String getDescriptionFr() {
+        return descriptionFr;
+    }
+
+    public void setDescriptionFr(String descriptionFr) {
+        this.descriptionFr = descriptionFr;
+    }
+
    public String getSeoTitle() {
        return seoTitle;
    }
@@ -247,4 +382,94 @@ public class ShopProduct {
    public void setUpdatedAt(OffsetDateTime updatedAt) {
        this.updatedAt = updatedAt;
    }
+
+    public String getNameForLanguage(String language) {
+        return resolveLocalizedValue(language, name, nameIt, nameEn, nameDe, nameFr);
+    }
+
+    public void setNameForLanguage(String language, String value) {
+        switch (normalizeLanguage(language)) {
+            case "it" -> nameIt = value;
+            case "en" -> nameEn = value;
+            case "de" -> nameDe = value;
+            case "fr" -> nameFr = value;
+            default -> {
+            }
+        }
+    }
+
+    public String getExcerptForLanguage(String language) {
+        return resolveLocalizedValue(language, excerpt, excerptIt, excerptEn, excerptDe, excerptFr);
+    }
+
+    public void setExcerptForLanguage(String language, String value) {
+        switch (normalizeLanguage(language)) {
+            case "it" -> excerptIt = value;
+            case "en" -> excerptEn = value;
+            case "de" -> excerptDe = value;
+            case "fr" -> excerptFr = value;
+            default -> {
+            }
+        }
+    }
+
+    public String getDescriptionForLanguage(String language) {
+        return resolveLocalizedValue(language, description, descriptionIt, descriptionEn, descriptionDe, descriptionFr);
+    }
+
+    public void setDescriptionForLanguage(String language, String value) {
+        switch (normalizeLanguage(language)) {
+            case "it" -> descriptionIt = value;
+            case "en" -> descriptionEn = value;
+            case "de" -> descriptionDe = value;
+            case "fr" -> descriptionFr = value;
+            default -> {
+            }
+        }
+    }
+
+    private String resolveLocalizedValue(String language,
+                                         String fallback,
+                                         String valueIt,
+                                         String valueEn,
+                                         String valueDe,
+                                         String valueFr) {
+        String normalizedLanguage = normalizeLanguage(language);
+        String preferred = switch (normalizedLanguage) {
+            case "it" -> valueIt;
+            case "en" -> valueEn;
+            case "de" -> valueDe;
+            case "fr" -> valueFr;
+            default -> null;
+        };
+        String resolved = firstNonBlank(preferred, fallback);
+        if (resolved != null) {
+            return resolved;
+        }
+        return firstNonBlank(valueIt, valueEn, valueDe, valueFr);
+    }
+
+    private String normalizeLanguage(String language) {
+        if (language == null) {
+            return "";
+        }
+        String normalized = language.trim().toLowerCase();
+        int separatorIndex = normalized.indexOf('-');
+        if (separatorIndex > 0) {
+            normalized = normalized.substring(0, separatorIndex);
+        }
+        return normalized;
+    }
+
+    private String firstNonBlank(String... values) {
+        if (values == null) {
+            return null;
+        }
+        for (String value : values) {
+            if (value != null && !value.isBlank()) {
+                return value;
+            }
+        }
+        return null;
+    }
 }
--- a/backend/src/main/java/com/printcalculator/service/admin/AdminShopProductControllerService.java
+++ b/backend/src/main/java/com/printcalculator/service/admin/AdminShopProductControllerService.java
@@ -22,6 +22,7 @@ import com.printcalculator.service.SlicerService;
 import com.printcalculator.service.media.PublicMediaQueryService;
 import com.printcalculator.service.shop.ShopStorageService;
 import com.printcalculator.service.storage.ClamAVService;
+import org.springframework.beans.factory.annotation.Value;
 import org.springframework.http.HttpStatus;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
@@ -75,6 +76,7 @@ public class AdminShopProductControllerService {
    private final ShopStorageService shopStorageService;
    private final SlicerService slicerService;
    private final ClamAVService clamAVService;
+    private final long maxModelFileSizeBytes;

    public AdminShopProductControllerService(ShopProductRepository shopProductRepository,
                                             ShopCategoryRepository shopCategoryRepository,
@@ -86,7 +88,8 @@ public class AdminShopProductControllerService {
                                             AdminMediaControllerService adminMediaControllerService,
                                             ShopStorageService shopStorageService,
                                             SlicerService slicerService,
-                                             ClamAVService clamAVService) {
+                                             ClamAVService clamAVService,
+                                             @Value("${shop.model.max-file-size-bytes:104857600}") long maxModelFileSizeBytes) {
        this.shopProductRepository = shopProductRepository;
        this.shopCategoryRepository = shopCategoryRepository;
        this.shopProductVariantRepository = shopProductVariantRepository;
@@ -98,6 +101,7 @@ public class AdminShopProductControllerService {
        this.shopStorageService = shopStorageService;
        this.slicerService = slicerService;
        this.clamAVService = clamAVService;
+        this.maxModelFileSizeBytes = maxModelFileSizeBytes;
    }

    public List<AdminShopProductDto> getProducts() {
@@ -113,13 +117,13 @@ public class AdminShopProductControllerService {
    @Transactional
    public AdminShopProductDto createProduct(AdminUpsertShopProductRequest payload) {
        ensurePayload(payload);
-        String normalizedName = normalizeRequired(payload.getName(), "Product name is required");
-        String normalizedSlug = normalizeAndValidateSlug(payload.getSlug(), normalizedName);
+        LocalizedProductContent localizedContent = normalizeLocalizedProductContent(payload);
+        String normalizedSlug = normalizeAndValidateSlug(payload.getSlug(), localizedContent.defaultName());
        ensureSlugAvailable(normalizedSlug, null);

        ShopProduct product = new ShopProduct();
        product.setCreatedAt(OffsetDateTime.now());
-        applyProductPayload(product, payload, normalizedName, normalizedSlug, resolveCategory(payload.getCategoryId()));
+        applyProductPayload(product, payload, localizedContent, normalizedSlug, resolveCategory(payload.getCategoryId()));
        ShopProduct saved = shopProductRepository.save(product);
        syncVariants(saved, payload.getVariants());
        return getProduct(saved.getId());
@@ -131,11 +135,11 @@ public class AdminShopProductControllerService {
        ShopProduct product = shopProductRepository.findById(productId)
                .orElseThrow(() -> new ResponseStatusException(HttpStatus.NOT_FOUND, "Shop product not found"));

-        String normalizedName = normalizeRequired(payload.getName(), "Product name is required");
-        String normalizedSlug = normalizeAndValidateSlug(payload.getSlug(), normalizedName);
+        LocalizedProductContent localizedContent = normalizeLocalizedProductContent(payload);
+        String normalizedSlug = normalizeAndValidateSlug(payload.getSlug(), localizedContent.defaultName());
        ensureSlugAvailable(normalizedSlug, productId);

-        applyProductPayload(product, payload, normalizedName, normalizedSlug, resolveCategory(payload.getCategoryId()));
+        applyProductPayload(product, payload, localizedContent, normalizedSlug, resolveCategory(payload.getCategoryId()));
        ShopProduct saved = shopProductRepository.save(product);
        syncVariants(saved, payload.getVariants());
        return getProduct(saved.getId());
@@ -291,14 +295,26 @@ public class AdminShopProductControllerService {

    private void applyProductPayload(ShopProduct product,
                                     AdminUpsertShopProductRequest payload,
-                                     String normalizedName,
+                                     LocalizedProductContent localizedContent,
                                     String normalizedSlug,
                                     ShopCategory category) {
        product.setCategory(category);
        product.setSlug(normalizedSlug);
-        product.setName(normalizedName);
-        product.setExcerpt(normalizeOptional(payload.getExcerpt()));
-        product.setDescription(normalizeOptional(payload.getDescription()));
+        product.setName(localizedContent.defaultName());
+        product.setNameIt(localizedContent.names().get("it"));
+        product.setNameEn(localizedContent.names().get("en"));
+        product.setNameDe(localizedContent.names().get("de"));
+        product.setNameFr(localizedContent.names().get("fr"));
+        product.setExcerpt(localizedContent.defaultExcerpt());
+        product.setExcerptIt(localizedContent.excerpts().get("it"));
+        product.setExcerptEn(localizedContent.excerpts().get("en"));
+        product.setExcerptDe(localizedContent.excerpts().get("de"));
+        product.setExcerptFr(localizedContent.excerpts().get("fr"));
+        product.setDescription(localizedContent.defaultDescription());
+        product.setDescriptionIt(localizedContent.descriptions().get("it"));
+        product.setDescriptionEn(localizedContent.descriptions().get("en"));
+        product.setDescriptionDe(localizedContent.descriptions().get("de"));
+        product.setDescriptionFr(localizedContent.descriptions().get("fr"));
        product.setSeoTitle(normalizeOptional(payload.getSeoTitle()));
        product.setSeoDescription(normalizeOptional(payload.getSeoDescription()));
        product.setOgTitle(normalizeOptional(payload.getOgTitle()));
@@ -436,8 +452,20 @@ public class AdminShopProductControllerService {
        dto.setCategorySlug(product.getCategory() != null ? product.getCategory().getSlug() : null);
        dto.setSlug(product.getSlug());
        dto.setName(product.getName());
+        dto.setNameIt(product.getNameIt());
+        dto.setNameEn(product.getNameEn());
+        dto.setNameDe(product.getNameDe());
+        dto.setNameFr(product.getNameFr());
        dto.setExcerpt(product.getExcerpt());
+        dto.setExcerptIt(product.getExcerptIt());
+        dto.setExcerptEn(product.getExcerptEn());
+        dto.setExcerptDe(product.getExcerptDe());
+        dto.setExcerptFr(product.getExcerptFr());
        dto.setDescription(product.getDescription());
+        dto.setDescriptionIt(product.getDescriptionIt());
+        dto.setDescriptionEn(product.getDescriptionEn());
+        dto.setDescriptionDe(product.getDescriptionDe());
+        dto.setDescriptionFr(product.getDescriptionFr());
        dto.setSeoTitle(product.getSeoTitle());
        dto.setSeoDescription(product.getSeoDescription());
        dto.setOgTitle(product.getOgTitle());
@@ -523,6 +551,61 @@ public class AdminShopProductControllerService {
        }
    }

+    private LocalizedProductContent normalizeLocalizedProductContent(AdminUpsertShopProductRequest payload) {
+        String legacyName = normalizeOptional(payload.getName());
+        String fallbackName = firstNonBlank(
+                legacyName,
+                normalizeOptional(payload.getNameIt()),
+                normalizeOptional(payload.getNameEn()),
+                normalizeOptional(payload.getNameDe()),
+                normalizeOptional(payload.getNameFr())
+        );
+        if (fallbackName == null) {
+            throw new ResponseStatusException(HttpStatus.BAD_REQUEST, "Product name is required");
+        }
+
+        Map<String, String> names = new LinkedHashMap<>();
+        names.put("it", normalizeRequired(firstNonBlank(normalizeOptional(payload.getNameIt()), fallbackName), "Italian product name is required"));
+        names.put("en", normalizeRequired(firstNonBlank(normalizeOptional(payload.getNameEn()), fallbackName), "English product name is required"));
+        names.put("de", normalizeRequired(firstNonBlank(normalizeOptional(payload.getNameDe()), fallbackName), "German product name is required"));
+        names.put("fr", normalizeRequired(firstNonBlank(normalizeOptional(payload.getNameFr()), fallbackName), "French product name is required"));
+
+        String fallbackExcerpt = firstNonBlank(
+                normalizeOptional(payload.getExcerpt()),
+                normalizeOptional(payload.getExcerptIt()),
+                normalizeOptional(payload.getExcerptEn()),
+                normalizeOptional(payload.getExcerptDe()),
+                normalizeOptional(payload.getExcerptFr())
+        );
+        Map<String, String> excerpts = new LinkedHashMap<>();
+        excerpts.put("it", firstNonBlank(normalizeOptional(payload.getExcerptIt()), fallbackExcerpt));
+        excerpts.put("en", firstNonBlank(normalizeOptional(payload.getExcerptEn()), fallbackExcerpt));
+        excerpts.put("de", firstNonBlank(normalizeOptional(payload.getExcerptDe()), fallbackExcerpt));
+        excerpts.put("fr", firstNonBlank(normalizeOptional(payload.getExcerptFr()), fallbackExcerpt));
+
+        String fallbackDescription = firstNonBlank(
+                normalizeOptional(payload.getDescription()),
+                normalizeOptional(payload.getDescriptionIt()),
+                normalizeOptional(payload.getDescriptionEn()),
+                normalizeOptional(payload.getDescriptionDe()),
+                normalizeOptional(payload.getDescriptionFr())
+        );
+        Map<String, String> descriptions = new LinkedHashMap<>();
+        descriptions.put("it", firstNonBlank(normalizeOptional(payload.getDescriptionIt()), fallbackDescription));
+        descriptions.put("en", firstNonBlank(normalizeOptional(payload.getDescriptionEn()), fallbackDescription));
+        descriptions.put("de", firstNonBlank(normalizeOptional(payload.getDescriptionDe()), fallbackDescription));
+        descriptions.put("fr", firstNonBlank(normalizeOptional(payload.getDescriptionFr()), fallbackDescription));
+
+        return new LocalizedProductContent(
+                names.get("it"),
+                firstNonBlank(excerpts.get("it"), fallbackExcerpt),
+                firstNonBlank(descriptions.get("it"), fallbackDescription),
+                names,
+                excerpts,
+                descriptions
+        );
+    }
+
    private void ensureSlugAvailable(String slug, UUID currentProductId) {
        shopProductRepository.findBySlugIgnoreCase(slug).ifPresent(existing -> {
            if (currentProductId == null || !existing.getId().equals(currentProductId)) {
@@ -547,6 +630,18 @@ public class AdminShopProductControllerService {
        return normalized.isBlank() ? null : normalized;
    }

+    private String firstNonBlank(String... values) {
+        if (values == null) {
+            return null;
+        }
+        for (String value : values) {
+            if (value != null && !value.isBlank()) {
+                return value;
+            }
+        }
+        return null;
+    }
+
    private String normalizeAndValidateSlug(String slug, String fallbackName) {
        String source = normalizeOptional(slug);
        if (source == null) {
@@ -579,6 +674,9 @@ public class AdminShopProductControllerService {
        if (file == null || file.isEmpty()) {
            throw new ResponseStatusException(HttpStatus.BAD_REQUEST, "3D model file is required");
        }
+        if (maxModelFileSizeBytes > 0 && file.getSize() > maxModelFileSizeBytes) {
+            throw new ResponseStatusException(HttpStatus.BAD_REQUEST, "3D model file exceeds size limit");
+        }
        String extension = resolveExtension(sanitizeOriginalFilename(file.getOriginalFilename()));
        if (!SUPPORTED_MODEL_EXTENSIONS.contains(extension)) {
            throw new ResponseStatusException(HttpStatus.BAD_REQUEST, "Unsupported 3D model type. Allowed: stl, 3mf");
@@ -683,4 +781,14 @@ public class AdminShopProductControllerService {

    public record ProductModelDownload(Path path, String filename, String mimeType) {
    }
+
+    private record LocalizedProductContent(
+            String defaultName,
+            String defaultExcerpt,
+            String defaultDescription,
+            Map<String, String> names,
+            Map<String, String> excerpts,
+            Map<String, String> descriptions
+    ) {
+    }
 }
--- a/backend/src/main/java/com/printcalculator/service/shop/PublicShopCatalogService.java
+++ b/backend/src/main/java/com/printcalculator/service/shop/PublicShopCatalogService.java
@@ -99,7 +99,7 @@ public class PublicShopCatalogService {
        List<ShopProductSummaryDto> products = productContext.entries().stream()
                .filter(entry -> allowedCategoryIds.contains(entry.product().getCategory().getId()))
                .filter(entry -> !Boolean.TRUE.equals(featuredOnly) || Boolean.TRUE.equals(entry.product().getIsFeatured()))
-                .map(entry -> toProductSummaryDto(entry, productContext.productMediaBySlug()))
+                .map(entry -> toProductSummaryDto(entry, productContext.productMediaBySlug(), language))
                .toList();

        ShopCategoryDetailDto selectedCategoryDetail = selectedCategory != null
@@ -128,7 +128,7 @@ public class PublicShopCatalogService {
            throw new ResponseStatusException(HttpStatus.NOT_FOUND, "Product not found");
        }

-        return toProductDetailDto(entry, productContext.productMediaBySlug());
+        return toProductDetailDto(entry, productContext.productMediaBySlug(), language);
    }

    public ProductModelDownload getProductModelDownload(String slug) {
@@ -348,13 +348,14 @@ public class PublicShopCatalogService {
    }

    private ShopProductSummaryDto toProductSummaryDto(ProductEntry entry,
-                                                      Map<String, List<PublicMediaUsageDto>> productMediaBySlug) {
+                                                      Map<String, List<PublicMediaUsageDto>> productMediaBySlug,
+                                                      String language) {
        List<PublicMediaUsageDto> images = productMediaBySlug.getOrDefault(productMediaUsageKey(entry.product()), List.of());
        return new ShopProductSummaryDto(
                entry.product().getId(),
                entry.product().getSlug(),
-                entry.product().getName(),
-                entry.product().getExcerpt(),
+                entry.product().getNameForLanguage(language),
+                entry.product().getExcerptForLanguage(language),
                entry.product().getIsFeatured(),
                entry.product().getSortOrder(),
                new ShopCategoryRefDto(
@@ -371,14 +372,15 @@ public class PublicShopCatalogService {
    }

    private ShopProductDetailDto toProductDetailDto(ProductEntry entry,
-                                                    Map<String, List<PublicMediaUsageDto>> productMediaBySlug) {
+                                                    Map<String, List<PublicMediaUsageDto>> productMediaBySlug,
+                                                    String language) {
        List<PublicMediaUsageDto> images = productMediaBySlug.getOrDefault(productMediaUsageKey(entry.product()), List.of());
        return new ShopProductDetailDto(
                entry.product().getId(),
                entry.product().getSlug(),
-                entry.product().getName(),
-                entry.product().getExcerpt(),
-                entry.product().getDescription(),
+                entry.product().getNameForLanguage(language),
+                entry.product().getExcerptForLanguage(language),
+                entry.product().getDescriptionForLanguage(language),
                entry.product().getSeoTitle(),
                entry.product().getSeoDescription(),
                entry.product().getOgTitle(),
--- a/backend/src/main/resources/application.properties
+++ b/backend/src/main/resources/application.properties
@@ -31,6 +31,7 @@ media.storage.root=${MEDIA_STORAGE_ROOT:storage_media}
 media.public.base-url=${MEDIA_PUBLIC_BASE_URL:http://localhost:8080/media}
 media.ffmpeg.path=${MEDIA_FFMPEG_PATH:ffmpeg}
 media.upload.max-file-size-bytes=${MEDIA_UPLOAD_MAX_FILE_SIZE_BYTES:26214400}
+shop.model.max-file-size-bytes=${SHOP_MODEL_MAX_FILE_SIZE_BYTES:104857600}
 shop.storage.root=${SHOP_STORAGE_ROOT:storage_shop}
 shop.cart.cookie.ttl-days=${SHOP_CART_COOKIE_TTL_DAYS:30}
 shop.cart.cookie.secure=${SHOP_CART_COOKIE_SECURE:false}