<?php

namespace Controller;

use Framework\Controller;
use Infrastructure\SemanticExplorerRepository;

/**
 * EntityController - CRUD for Semantic Explorer Entities
 *
 * Extracted from SemanticExplorerController for SRP compliance.
 */
class EntityController extends Controller
{
    private SemanticExplorerRepository $repository;

    public function __construct()
    {
        $this->repository = new SemanticExplorerRepository();
    }

    /**
     * GET /semantic-explorer/entitaeten
     * Liste aller Entitaeten
     */
    public function index(): void
    {
        $type = $this->getString('type');
        $search = $this->getString('search');

        $entities = $this->repository->getEntitiesFiltered($type, $search);
        $stats = $this->repository->getEntityStats();

        $this->view('semantic-explorer.entitaeten.index', [
            'title' => 'Entitaeten',
            'entities' => $entities,
            'stats' => $stats,
            'currentType' => $type,
            'currentSearch' => $search,
        ]);
    }

    /**
     * GET /semantic-explorer/entitaeten/{id}
     * Entitaet-Details
     */
    public function show(int $id): void
    {
        $entity = $this->repository->getEntity($id);

        if ($entity === null) {
            $this->notFound('Entitaet nicht gefunden');
        }

        $synonyms = $this->repository->getEntitySynonyms($id);
        $outgoingRelations = $this->repository->getOutgoingRelations($id);
        $incomingRelations = $this->repository->getIncomingRelations($id);
        $chunks = $this->repository->getChunksForEntity($id);
        $classifications = $this->repository->getEntityClassifications($id);

        $this->view('semantic-explorer.entitaeten.show', [
            'title' => $entity['name'],
            'entity' => $entity,
            'synonyms' => $synonyms,
            'outgoingRelations' => $outgoingRelations,
            'incomingRelations' => $incomingRelations,
            'chunks' => $chunks,
            'classifications' => $classifications,
        ]);
    }

    /**
     * GET /semantic-explorer/entitaeten/new
     */
    public function create(): void
    {
        $this->view('semantic-explorer.entitaeten.new', [
            'title' => 'Neue Entitaet',
            'types' => $this->repository->getEntityTypes(),
        ]);
    }

    /**
     * POST /semantic-explorer/entitaeten
     */
    public function store(): void
    {
        $input = $this->getJsonInput();

        $name = trim($input['name'] ?? '');
        $type = trim($input['type'] ?? '');
        $description = trim($input['description'] ?? '') ?: null;

        if ($name === '' || $type === '') {
            $this->json(['success' => false, 'error' => 'Name und Typ sind erforderlich'], 400);

            return;
        }

        try {
            $id = $this->repository->createEntity($name, $type, $description);
            $this->json(['success' => true, 'id' => $id]);
        } catch (\Exception $e) {
            $this->json(['success' => false, 'error' => $e->getMessage()], 500);
        }
    }

    /**
     * GET /semantic-explorer/entitaeten/{id}/edit
     */
    public function edit(int $id): void
    {
        $entity = $this->repository->getEntity($id);

        if ($entity === null) {
            $this->notFound('Entitaet nicht gefunden');
        }

        $this->view('semantic-explorer.entitaeten.edit', [
            'title' => 'Entitaet bearbeiten',
            'entity' => $entity,
            'types' => $this->repository->getEntityTypes(),
        ]);
    }

    /**
     * POST /semantic-explorer/entitaeten/{id}
     */
    public function update(int $id): void
    {
        $input = $this->getJsonInput();

        $name = trim($input['name'] ?? '');
        $type = trim($input['type'] ?? '');
        $description = trim($input['description'] ?? '') ?: null;

        if ($name === '' || $type === '') {
            $this->json(['success' => false, 'error' => 'Name und Typ sind erforderlich'], 400);

            return;
        }

        try {
            $this->repository->updateEntity($id, $name, $type, $description);
            $this->json(['success' => true]);
        } catch (\Exception $e) {
            $this->json(['success' => false, 'error' => $e->getMessage()], 500);
        }
    }

    /**
     * POST /semantic-explorer/entitaeten/{id}/delete
     */
    public function delete(int $id): void
    {
        try {
            $success = $this->repository->deleteEntity($id);
            if ($success) {
                $this->json(['success' => true]);
            } else {
                $this->json(['success' => false, 'error' => 'Entitaet hat noch Relationen'], 400);
            }
        } catch (\Exception $e) {
            $this->json(['success' => false, 'error' => $e->getMessage()], 500);
        }
    }
}