<?php

namespace Tests\Unit;

use App\Repositories\CategoryRepository;
use PHPUnit\Framework\TestCase;
use ReflectionClass;
use Services\Database;
use Services\DataBase\Classes\PdoConnection;
use Services\DataBase\Classes\Profiler;
use System\Classes\Config;
use System\Classes\MyException;
use System\Classes\Repository;

/**
 * CategoryRepository жёстко привязан к боевой таблице categories конструктором — для тестов
 * подменяем таблицу на временную через прямой вызов Repository::__construct(), минуя
 * CategoryRepository::__construct() (тот же приём, что и RepositoryTestItemRepository
 * в RepositoryTest.php, только поверх реального класса, а не заглушки).
 */
class CategoryRepositoryTestDouble extends CategoryRepository
{
    public function __construct(?string $connection = null)
    {
        Repository::__construct('category_repository_test_categories', connection: $connection);
    }
}

class CategoryRepositoryTest extends TestCase
{
    private PdoConnection $connection;
    private CategoryRepositoryTestDouble $repository;

    protected function setUp(): void
    {
        $config           = Config::get('db', 'default') ?? [];
        $this->connection = new PdoConnection($config);

        try {
            $this->connection->pdo();
        } catch (MyException $e) {
            $this->markTestSkipped('Нет живого подключения к MariaDB (заполните App/config/config.local.php): ' . $e->getMessage());
        }

        $this->connection->exec('DROP TABLE IF EXISTS category_repository_test_categories');
        $this->connection->exec(
            'CREATE TABLE category_repository_test_categories (
                id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
                user_id INT UNSIGNED NOT NULL,
                parent_id INT UNSIGNED NULL,
                title VARCHAR(128) NOT NULL,
                type ENUM(\'income\',\'expense\') NOT NULL,
                is_delete TINYINT(1) NOT NULL DEFAULT 0,
                `order` INT NOT NULL DEFAULT 0,
                linked_expense_categorie_id INT UNSIGNED NULL,
                formula_pct DECIMAL(5,2) NULL
            )'
        );

        $this->repository = new CategoryRepositoryTestDouble();
    }

    protected function tearDown(): void
    {
        Profiler::reset();

        if (isset($this->connection)) {
            try {
                $this->connection->exec('DROP TABLE IF EXISTS category_repository_test_categories');
            } catch (MyException) {
            }
        }

        $ref  = new ReflectionClass(Database::class);
        $prop = $ref->getProperty('_instances');
        $prop->setAccessible(true);
        $prop->setValue(null, []);
    }

    public function testFindActiveDuplicateFindsSameTitleTypeParent(): void
    {
        $this->repository->create([
            'user_id' => 1, 'parent_id' => null, 'title' => 'Зарплата', 'type' => 'income',
            'is_delete' => false, 'order' => 0,
        ]);

        $duplicate = $this->repository->findActiveDuplicate(1, 'income', null, 'Зарплата');

        $this->assertNotFalse($duplicate);
        $this->assertSame('Зарплата', $duplicate->title);
    }

    public function testFindActiveDuplicateIgnoresDifferentType(): void
    {
        $this->repository->create([
            'user_id' => 1, 'parent_id' => null, 'title' => 'Прочее', 'type' => 'income',
            'is_delete' => false, 'order' => 0,
        ]);

        $this->assertFalse($this->repository->findActiveDuplicate(1, 'expense', null, 'Прочее'));
    }

    public function testFindActiveDuplicateExcludesGivenId(): void
    {
        $id = $this->repository->create([
            'user_id' => 1, 'parent_id' => null, 'title' => 'Транспорт', 'type' => 'expense',
            'is_delete' => false, 'order' => 0,
        ]);

        $this->assertFalse($this->repository->findActiveDuplicate(1, 'expense', null, 'Транспорт', $id));
    }

    public function testFindArchivedDuplicateOnlyMatchesArchived(): void
    {
        $this->repository->create([
            'user_id' => 1, 'parent_id' => null, 'title' => 'Такси', 'type' => 'expense',
            'is_delete' => true, 'order' => 0,
        ]);

        $this->assertFalse($this->repository->findActiveDuplicate(1, 'expense', null, 'Такси'));

        $archived = $this->repository->findArchivedDuplicate(1, 'expense', null, 'Такси');

        $this->assertNotFalse($archived);
        $this->assertSame('Такси', $archived->title);
    }

    public function testGetTreeGroupsByParentId(): void
    {
        $group_id = $this->repository->create([
            'user_id' => 1, 'parent_id' => null, 'title' => 'Транспорт', 'type' => 'expense',
            'is_delete' => false, 'order' => 0,
        ]);

        $this->repository->create([
            'user_id' => 1, 'parent_id' => $group_id, 'title' => 'Такси', 'type' => 'expense',
            'is_delete' => false, 'order' => 0,
        ]);

        // архивная — не должна попасть в дерево
        $this->repository->create([
            'user_id' => 1, 'parent_id' => $group_id, 'title' => 'Метро', 'type' => 'expense',
            'is_delete' => true, 'order' => 0,
        ]);

        $tree = $this->repository->getTree(1);

        $this->assertCount(1, $tree[0]);
        $this->assertSame('Транспорт', $tree[0][0]->title);
        $this->assertCount(1, $tree[$group_id]);
        $this->assertSame('Такси', $tree[$group_id][0]->title);
    }

    public function testGetTreeScopedByUser(): void
    {
        $this->repository->create([
            'user_id' => 1, 'parent_id' => null, 'title' => 'Моя статья', 'type' => 'expense',
            'is_delete' => false, 'order' => 0,
        ]);
        $this->repository->create([
            'user_id' => 2, 'parent_id' => null, 'title' => 'Чужая статья', 'type' => 'expense',
            'is_delete' => false, 'order' => 0,
        ]);

        $tree = $this->repository->getTree(1);

        $this->assertCount(1, $tree[0]);
        $this->assertSame('Моя статья', $tree[0][0]->title);
    }
}