init

backend/src/config/uploadPaths.ts

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+import { join, resolve, sep } from 'node:path';
+
+const uploadsRoot = (): string => join(process.cwd(), 'uploads');
+
+const validatePathTraversal = (baseDir: string, absolutePath: string): void => {
+    const resolvedBaseDir = resolve(baseDir);
+
+    if (!absolutePath.startsWith(`${resolvedBaseDir}${sep}`)) {
+        throw new Error('Invalid storage key');
+    }
+};
+
+const resolvePathWithinDir = (baseDir: string, storageKey: string): string => {
+    const resolvedBaseDir = resolve(baseDir);
+    const absolutePath = resolve(resolvedBaseDir, storageKey);
+
+    validatePathTraversal(resolvedBaseDir, absolutePath);
+
+    return absolutePath;
+};
+
+export const getPublicUploadsDir = (): string => join(uploadsRoot(), 'public');
+
+export const publicUploadsUrlPrefix = '/uploads/public/';
+
+export const getPrivateUploadsDir = (): string => join(uploadsRoot(), 'private');
+
+export const getVariantImagesDir = (): string => join(getPublicUploadsDir(), 'variants', 'images');
+
+export const variantImagesUrlPrefix = '/uploads/public/variants/images/';
+
+export const getVariantImagePublicUrl = (filename: string): string => `${variantImagesUrlPrefix}${filename}`;
+
+export const getShopBrandingDir = (): string => join(getPublicUploadsDir(), 'shop');
+
+export const shopBrandingUrlPrefix = '/uploads/public/shop/';
+
+export const getShopBrandingPublicUrl = (filename: string): string => `${shopBrandingUrlPrefix}${filename}`;
+
+export const resolveShopBrandingPath = (storageKey: string): string => {
+    const baseDir = getShopBrandingDir();
+
+    const absolutePath = resolvePathWithinDir(baseDir, storageKey);
+
+    return absolutePath;
+};
+
+export const getDigitalStockAttachmentsDir = (): string => join(getPrivateUploadsDir(), 'digital-stock', 'attachments');
+
+export const resolveDigitalStockAttachmentPath = (storageKey: string): string => {
+    const baseDir = getDigitalStockAttachmentsDir();
+
+    const absolutePath = resolvePathWithinDir(baseDir, storageKey);
+
+    return absolutePath;
+};