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"content": "<?php\n\nnamespace Controller;\n\nuse Framework\\Controller;\nuse Infrastructure\\SemanticExplorerRepository;\n\n\/**\n * TaxonomyController - CRUD for Semantic Explorer Taxonomy\n *\n * Extracted from SemanticExplorerController for SRP compliance.\n *\/\nclass TaxonomyController extends Controller\n{\n private SemanticExplorerRepository $repository;\n\n public function __construct()\n {\n $this->repository = new SemanticExplorerRepository();\n }\n\n \/**\n * GET \/semantic-explorer\/taxonomie\n * Hierarchische Kategorisierung\n *\/\n public function index(): void\n {\n $terms = $this->repository->getTaxonomyTerms();\n $hierarchy = $this->buildTaxonomyTree($terms);\n $stats = $this->repository->getTaxonomyStats();\n\n $this->view('semantic-explorer.taxonomie', [\n 'title' => 'Taxonomie',\n 'terms' => $terms,\n 'hierarchy' => $hierarchy,\n 'stats' => $stats,\n ]);\n }\n\n \/**\n * GET \/semantic-explorer\/taxonomie\/new\n *\/\n public function create(): void\n {\n $this->view('semantic-explorer.taxonomie.new', [\n 'title' => 'Neuer Taxonomie-Begriff',\n 'terms' => $this->repository->getTaxonomyTermsForSelect(),\n ]);\n }\n\n \/**\n * POST \/semantic-explorer\/taxonomie\n *\/\n public function store(): void\n {\n $input = $this->getJsonInput();\n\n $name = trim($input['name'] ?? '');\n $parentId = isset($input['parent_id']) && $input['parent_id'] !== '' ? (int) $input['parent_id'] : null;\n\n if ($name === '') {\n $this->json(['success' => false, 'error' => 'Name ist erforderlich'], 400);\n\n return;\n }\n\n try {\n $id = $this->repository->createTaxonomyTerm($name, $parentId);\n $this->json(['success' => true, 'id' => $id]);\n } catch (\\Exception $e) {\n $this->json(['success' => false, 'error' => $e->getMessage()], 500);\n }\n }\n\n \/**\n * GET \/semantic-explorer\/taxonomie\/{id}\/edit\n *\/\n public function edit(int $id): void\n {\n $term = $this->repository->getTaxonomyTerm($id);\n\n if ($term === null) {\n $this->notFound('Begriff nicht gefunden');\n }\n\n $this->view('semantic-explorer.taxonomie.edit', [\n 'title' => 'Begriff bearbeiten',\n 'term' => $term,\n 'terms' => $this->repository->getTaxonomyTermsForSelect(),\n ]);\n }\n\n \/**\n * POST \/semantic-explorer\/taxonomie\/{id}\n *\/\n public function update(int $id): void\n {\n $input = $this->getJsonInput();\n\n $name = trim($input['name'] ?? '');\n $parentId = isset($input['parent_id']) && $input['parent_id'] !== '' ? (int) $input['parent_id'] : null;\n\n if ($name === '') {\n $this->json(['success' => false, 'error' => 'Name ist erforderlich'], 400);\n\n return;\n }\n\n try {\n $this->repository->updateTaxonomyTerm($id, $name, $parentId);\n $this->json(['success' => true]);\n } catch (\\Exception $e) {\n $this->json(['success' => false, 'error' => $e->getMessage()], 500);\n }\n }\n\n \/**\n * POST \/semantic-explorer\/taxonomie\/{id}\/delete\n *\/\n public function delete(int $id): void\n {\n try {\n $success = $this->repository->deleteTaxonomyTerm($id);\n if ($success) {\n $this->json(['success' => true]);\n } else {\n $this->json(['success' => false, 'error' => 'Begriff hat noch Unterbegriffe'], 400);\n }\n } catch (\\Exception $e) {\n $this->json(['success' => false, 'error' => $e->getMessage()], 500);\n }\n }\n\n \/**\n * Baut Baum aus flacher Liste\n *\/\n private function buildTaxonomyTree(array $items, ?int $parentId = null): array\n {\n $tree = [];\n foreach ($items as $item) {\n if ($item['parent_id'] == $parentId) {\n $item['children'] = $this->buildTaxonomyTree($items, $item['id']);\n $tree[] = $item;\n }\n }\n\n return $tree;\n }\n}\n",
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