<?php
/**
 * @package       Bicycle
 * @author        Egor Isaev
 * @description   CategoryGroupsController.php
 * @copyright (c) 15/08/2026
 */

namespace App\Controller;

use App\Repositories\CategoryGroupRepository;
use App\Repositories\CategoryRepository;
use App\Repositories\UserRepository;
use Services\Auth;
use System\Classes\Controller;
use System\Classes\HTTP\HTTPException;
use System\Classes\MyException;
use System\Classes\Request;
use System\Classes\Validation;

/**
 * CRUD групп статей (category_groups) — самостоятельная сущность, отдельная от статей
 * (см. App\Controller\CategoriesController). JSON API, вызывается из той же модалки «Статьи»
 * на /budgets (см. App/media/js/categories.js).
 */
class CategoryGroupsController extends Controller
{
    protected bool $_auth_protection = true;

    /**
     * @return string JSON
     * @throws MyException
     */
    public function createAction(): string
    {
        $request    = Request::$current;
        $user       = $this->currentUser();
        $group_repo = new CategoryGroupRepository();

        $validation = $this->buildValidation($request->post());

        if (!$validation->check()) {
            return $this->json(['success' => false, 'errors' => $validation->errors()], 422);
        }

        $type  = $request->post('type');
        $title = $request->post('title');

        if ($group_repo->findActiveDuplicate($user->id, $type, $title)) {
            return $this->json(['success' => false, 'errors' => ['title' => 'Такая группа уже есть']], 422);
        }

        $archived_duplicate = $group_repo->findArchivedDuplicate($user->id, $type, $title);

        if ($archived_duplicate) {
            return $this->json([
                'success'  => false,
                'archived' => ['id' => $archived_duplicate->id, 'title' => $archived_duplicate->title],
            ], 422);
        }

        $group_repo->create([
            'user_id'   => $user->id,
            'title'     => $title,
            'type'      => $type,
            'is_delete' => false,
            'order'     => 0,
        ]);

        return $this->json(['success' => true]);
    }

    /**
     * @return string JSON
     * @throws HTTPException|MyException
     */
    public function editAction(): string
    {
        $request    = Request::$current;
        $user       = $this->currentUser();
        $group_repo = new CategoryGroupRepository();
        $group      = $this->ownGroup($group_repo, $user, (int)$request->param(0));

        $validation = $this->buildValidation($request->post());

        if (!$validation->check()) {
            return $this->json(['success' => false, 'errors' => $validation->errors()], 422);
        }

        $type  = $request->post('type');
        $title = $request->post('title');

        if ($group_repo->findActiveDuplicate($user->id, $type, $title, (int)$group->id)) {
            return $this->json(['success' => false, 'errors' => ['title' => 'Такая группа уже есть']], 422);
        }

        $archived_duplicate = $group_repo->findArchivedDuplicate($user->id, $type, $title, (int)$group->id);

        if ($archived_duplicate) {
            return $this->json([
                'success'  => false,
                'archived' => ['id' => $archived_duplicate->id, 'title' => $archived_duplicate->title],
            ], 422);
        }

        $group_repo->update(['id' => $group->id, 'title' => $title, 'type' => $type]);

        return $this->json(['success' => true]);
    }

    /**
     * Архивация группы. Статьи внутри — не архивируются автоматически, а просто становятся без
     * группы (group_id = NULL): архивация группы не должна "тихо" утаскивать за собой все статьи —
     * это уже было бы массовым удалением без явного подтверждения. ON DELETE SET NULL в схеме
     * сработал бы так же, но только при физическом удалении группы, а тут — архивация (is_delete),
     * поэтому group_id у статей чистим явно сами.
     *
     * @return string JSON
     * @throws HTTPException|MyException
     */
    public function deleteAction(): string
    {
        $request    = Request::$current;
        $user       = $this->currentUser();
        $group_repo = new CategoryGroupRepository();
        $group      = $this->ownGroup($group_repo, $user, (int)$request->param(0));

        $group_repo->update(['id' => $group->id, 'is_delete' => true]);
        (new CategoryRepository())->clearGroup((int)$group->id, (int)$user->id);

        return $this->json(['success' => true]);
    }

    /**
     * Возврат группы из архива.
     *
     * @return string JSON
     * @throws HTTPException|MyException
     */
    public function restoreAction(): string
    {
        $request    = Request::$current;
        $user       = $this->currentUser();
        $group_repo = new CategoryGroupRepository();
        $group      = $this->ownGroup($group_repo, $user, (int)$request->param(0));

        $group_repo->update(['id' => $group->id, 'is_delete' => false]);

        return $this->json(['success' => true]);
    }

    /**
     * @param array $data
     * @return Validation
     */
    protected function buildValidation(array $data): Validation
    {
        return Validation::factory($data)
            ->label('title', 'Название')
            ->label('type', 'Тип')
            ->rule('title', 'required')
            ->rule('title', 'max_length', [128])
            ->rule('type', 'required')
            ->rule('type', 'in', [['income', 'expense']]);
    }

    /**
     * @return object
     * @throws HTTPException|MyException
     */
    protected function currentUser(): object
    {
        $auth_user = Auth::instance()->getUser();
        $user      = (new UserRepository())->getByLogin($auth_user['login']);

        if (!$user) {
            throw HTTPException::factory(404);
        }

        return $user;
    }

    /**
     * @param CategoryGroupRepository $group_repo
     * @param object                   $user
     * @param int                      $id
     * @return object
     * @throws HTTPException|MyException
     */
    protected function ownGroup(CategoryGroupRepository $group_repo, object $user, int $id): object
    {
        $group = $group_repo->get($id);

        if (!$group || (int)$group->user_id !== (int)$user->id) {
            throw HTTPException::factory(404);
        }

        return $group;
    }
}