<?php

declare(strict_types=1);

namespace Controller;

// @responsibility: HTTP-Endpunkte für Semantic Explorer Ontologie (CRUD)

use Domain\Repository\OntologyRepositoryInterface;
use Framework\Controller;
use Infrastructure\Audit\AuditService;
use Infrastructure\Formatter\ApiResponseFormatter;

class OntologyController extends Controller
{
    private OntologyRepositoryInterface $repository;
    private ApiResponseFormatter $apiFormatter;
    private AuditService $audit;

    public function __construct(
        OntologyRepositoryInterface $repository,
        ApiResponseFormatter $apiFormatter,
        AuditService $audit
    ) {
        $this->repository = $repository;
        $this->apiFormatter = $apiFormatter;
        $this->audit = $audit;
    }

    /**
     * GET /semantic-explorer/ontologie
     * Klassifizierte Entities mit Ontologie-Klassen und Verbindungen
     */
    public function index(): void
    {
        $search = $this->getString('search');
        $classFilter = $this->getString('class');
        $pagination = $this->getPagination(50);

        // Ontologie-Klassen für Filter-Dropdown
        $classes = $this->repository->findAll();
        foreach ($classes as &$class) {
            $class['properties_decoded'] = $this->decodeJson($class['properties'] ?? null);
        }

        // Klassifizierte Entities mit Relationen
        $totalCount = $this->repository->countClassifiedEntities($search, $classFilter);
        $entities = $this->repository->findClassifiedEntities($search, $classFilter, $pagination->limit, $pagination->offset);
        $pagination = $pagination->withTotal($totalCount);

        $stats = $this->repository->getStats();

        $this->view('semantic-explorer.ontologie', [
            'title' => 'Ontologie',
            'classes' => $classes,
            'entities' => $entities,
            'stats' => $stats,
            'currentSearch' => $search,
            'currentClass' => $classFilter,
            'currentPage' => $pagination->page,
            'totalCount' => $pagination->totalCount,
            'totalPages' => $pagination->totalPages(),
        ]);
    }

    /**
     * GET /semantic-explorer/ontologie/new
     */
    public function create(): void
    {
        $this->view('semantic-explorer.ontologie.new', [
            'title' => 'Neue Ontologie-Klasse',
            'classes' => $this->repository->findForSelect(),
        ]);
    }

    /**
     * POST /semantic-explorer/ontologie
     */
    public function store(): void
    {
        $this->requireCsrf();

        $input = $this->getJsonInput();
        if (empty($input)) {
            $input = $_POST;
        }

        $name = trim($input['name'] ?? '');
        $parentId = isset($input['parent_class_id']) && $input['parent_class_id'] !== '' ? (int) $input['parent_class_id'] : null;
        $description = trim($input['description'] ?? '') ?: null;
        $properties = $input['properties'] ?? [];

        if ($name === '') {
            if ($this->isHtmxRequest()) {
                $this->htmxError('Name ist erforderlich');

                return;
            }
            $this->json($this->apiFormatter->validationError('Name ist erforderlich', ['name' => 'Pflichtfeld']), 400);

            return;
        }

        try {
            $id = $this->repository->create($name, $parentId, $description, $properties);

            // Audit log
            $this->audit->logCreate(
                table: 'ontology_classes',
                id: $id,
                data: ['name' => $name, 'parent_class_id' => $parentId, 'description' => $description],
                actor: 'user',
                actorType: 'user'
            );

            if ($this->isHtmxRequest()) {
                $this->htmxRedirect('/semantic-explorer/ontologie/' . $id);

                return;
            }

            $this->json($this->apiFormatter->created($id, 'Ontologie-Klasse erstellt'));
        } catch (\Exception $e) {
            if ($this->isHtmxRequest()) {
                $this->htmxError($e->getMessage());

                return;
            }
            $this->json($this->apiFormatter->error($e->getMessage(), 'SERVER_ERROR'), 500);
        }
    }

    /**
     * GET /semantic-explorer/ontologie/{id}/edit
     */
    public function edit(int $id): void
    {
        $class = $this->repository->find($id);

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

        $this->view('semantic-explorer.ontologie.edit', [
            'title' => 'Klasse bearbeiten',
            'class' => $class,
            'classes' => $this->repository->findForSelect(),
        ]);
    }

    /**
     * POST /semantic-explorer/ontologie/{id}
     */
    public function update(int $id): void
    {
        $this->requireCsrf();

        $input = $this->getJsonInput();
        if (empty($input)) {
            $input = $_POST;
        }

        $name = trim($input['name'] ?? '');
        $parentId = isset($input['parent_class_id']) && $input['parent_class_id'] !== '' ? (int) $input['parent_class_id'] : null;
        $description = trim($input['description'] ?? '') ?: null;
        $properties = $input['properties'] ?? [];

        if ($name === '') {
            if ($this->isHtmxRequest()) {
                $this->htmxError('Name ist erforderlich');

                return;
            }
            $this->json($this->apiFormatter->validationError('Name ist erforderlich', ['name' => 'Pflichtfeld']), 400);

            return;
        }

        try {
            // Get old state for audit
            $oldClass = $this->repository->find($id);

            $this->repository->update($id, $name, $parentId, $description, $properties);

            // Audit log
            $this->audit->logUpdate(
                table: 'ontology_classes',
                id: $id,
                oldData: $oldClass !== null ? ['name' => $oldClass['name'], 'description' => $oldClass['description'] ?? null] : [],
                newData: ['name' => $name, 'parent_class_id' => $parentId, 'description' => $description],
                actor: 'user',
                actorType: 'user'
            );

            if ($this->isHtmxRequest()) {
                $this->htmxRedirect('/semantic-explorer/ontologie/' . $id);

                return;
            }

            $this->json($this->apiFormatter->ok('Ontologie-Klasse aktualisiert'));
        } catch (\Exception $e) {
            if ($this->isHtmxRequest()) {
                $this->htmxError($e->getMessage());

                return;
            }
            $this->json($this->apiFormatter->error($e->getMessage(), 'SERVER_ERROR'), 500);
        }
    }

    /**
     * POST /semantic-explorer/ontologie/{id}/delete
     */
    public function destroy(int $id): void
    {
        try {
            // Get data before delete for audit
            $class = $this->repository->find($id);

            $success = $this->repository->delete($id);
            if ($success) {
                // Audit log
                $this->audit->logDelete(
                    table: 'ontology_classes',
                    id: $id,
                    data: $class !== null ? ['name' => $class['name'], 'description' => $class['description'] ?? null] : [],
                    reason: 'User deleted via UI',
                    actor: 'user',
                    actorType: 'user'
                );

                $this->json($this->apiFormatter->ok('Ontologie-Klasse gelöscht'));
            } else {
                $this->json($this->apiFormatter->error('Klasse hat noch Unterklassen', 'HAS_CHILDREN'), 400);
            }
        } catch (\Exception $e) {
            $this->json($this->apiFormatter->error($e->getMessage(), 'SERVER_ERROR'), 500);
        }
    }
}