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src/api/category.js

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+import { http, httpBinary, httpGetBinary } from './http.js';
+
+export const category = {
+  /** GET /api/category/tree → { languageId, tree, articles } (company from session) */
+  getTree() {
+    return http('/api/category/tree');
+  },
+
+  /**
+   * GET /api/category/:id/articles → { articles: [...] }
+   * Article rows: sku, name, net, taxRate, fullHash, thumbW, thumbH, thumbHash, childCount, …
+   */
+  getArticles(categoryId) {
+    return http(`/api/category/${categoryId}/articles`);
+  },
+
+  /** POST /api/category → 201 { category } */
+  create({ parentId, name }) {
+    return http('/api/category', {
+      method: 'POST',
+      body: { parentId: Number(parentId), name },
+    });
+  },
+
+  /**
+   * DELETE /api/category/:id → 204
+   * Query: ?recursive=true (cascades deletion of subcategories and articles)
+   */
+  delete(categoryId, { recursive = false } = {}) {
+    const qs = recursive ? '?recursive=true' : '';
+    return http(`/api/category/${categoryId}${qs}`, { method: 'DELETE' });
+  },
+
+  /**
+   * PATCH /api/category/:id
+   * Body: { name } — renames and re-slugifies in the company default language.
+   * Empty name → 400 name is required.
+   * → 200 { category: { id, name, slug } }
+   */
+  updateName(categoryId, name) {
+    return http(`/api/category/${categoryId}`, {
+      method: 'PATCH',
+      body: { name },
+    });
+  },
+
+  /**
+   * PUT /api/category/order
+   * Body: { parentId, categoryIds: number[] } — sibling order of the children
+   * under `parentId` (top-down). categoryIds must be exactly the current child
+   * set of parentId (same count, no foreign/duplicate ids) → 400 Invalid category order.
+   * → 200 { categoryIds: number[] }
+   */
+  reorder(parentId, categoryIds) {
+    return http('/api/category/order', {
+      method: 'PUT',
+      body: { parentId, categoryIds },
+    });
+  },
+
+  /**
+   * PATCH /api/category/:id
+   * Body: { parentId } — moves the category under a new parent.
+   * → 200 { category: { id, parentId, sort } }  (kein name/slug im Response)
+   */
+  move(categoryId, parentId) {
+    return http(`/api/category/${categoryId}`, {
+      method: 'PATCH',
+      body: { parentId },
+    });
+  },
+
+  /**
+   * PATCH /api/category/:id
+   * Body: { pos: boolean } — toggles the POS (Point of Sale) flag.
+   * → 200 { category: { id, pos } }
+   *
+   * PROPOSED — backend needs to implement this field.
+   */
+  updatePos(categoryId, pos) {
+    return http(`/api/category/${categoryId}`, {
+      method: 'PATCH',
+      body: { pos },
+    });
+  },
+
+  /**
+   * POST /api/category/:id/image
+   * Body: raw image bytes (Content-Type: image/webp)
+   * → 201 { category: { id, fullHash, thumbW, thumbH, thumbHash } }
+   */
+  uploadImage(categoryId, file) {
+    return httpBinary(`/api/category/${categoryId}/image`, {
+      method: 'POST',
+      contentType: file?.type || 'image/webp',
+      body: file,
+    });
+  },
+
+  /**
+   * DELETE /api/category/:id/image
+   * → 200 { category: { id, thumbW: null, thumbH: null, thumbHash: null } }
+   */
+  deleteImage(categoryId) {
+    return http(`/api/category/${categoryId}/image`, { method: 'DELETE' });
+  },
+
+  /**
+   * GET /api/category/export.zip → application/zip (binary download)
+   * `kategorien.zip` = kategorien.csv (semicolon-separated, Windows-1252,
+   * depth-first, `Ebene N` name column per depth) + one `<fullHash>.avif`
+   * entry per category image (content-addressed, deduplicated).
+   * Errors: 400 No company selected, 401, 403, 404 (JSON { error }).
+   */
+  exportZip() {
+    return httpGetBinary('/api/category/export.zip');
+  },
+};