<?php

namespace App\Services;

use App\DTOs\UserDTO;
use App\Entities\UserEntity;
use App\Forms\UserForm;
use App\Helpers\UserHelper;
use App\Models\UserModel;
use RuntimeException;

class UserService extends CommonService
{
    public function __construct(UserModel $model)
    {
        parent::__construct($model);
        $this->addClassPaths('User');
    }
    public function getFormService(): UserForm
    {
        if ($this->formServiceInstance === null) {
            $this->formServiceInstance = new UserForm();
            $this->formServiceInstance->setAttributes([
                'pk_field'         => $this->model->getPKField(),
                'title_field'      => $this->model->getTitleField(),
                'table'            => $this->model->getTable(),
                'useAutoIncrement' => $this->model->useAutoIncrement(),
                'class_path' => $this->getClassPaths(false)
            ]);
        }
        return $this->formServiceInstance;
    }
    public function getHelper(): UserHelper
    {
        if ($this->helperInstance === null) {
            $this->helperInstance = new UserHelper();
            $this->helperInstance->setAttributes([
                'pk_field'         => $this->model->getPKField(),
                'title_field'      => $this->model->getTitleField(),
                'table'            => $this->model->getTable(),
                'useAutoIncrement' => $this->model->useAutoIncrement(),
                'class_path' => $this->getClassPaths(false)
            ]);
        }
        return $this->helperInstance;
    }
    //기본 기능부분
    protected function getValidationRule(string $field, string $rule): array
    {
        switch ($field) {
            case 'role':
                $field = "{$field}.*";
                break;
            default:
                return parent::getValidationRule($field, $rule);
                // break;
        }
        return array($field, $rule);
    }
    protected function create_process(array $formDatas): UserEntity
    {
        if (isset($formDatas['confirmpassword'])) {
            unset($formDatas['confirmpassword']);
        }
        //UserEntity를 생성하면 Setter가 자동 호출됩니다.
        return new UserEntity($formDatas);
    }
    public function create(object $dto): UserEntity
    {
        if (!$dto instanceof UserDTO) {
            throw new RuntimeException(__METHOD__ . "에서 오류발생:" . get_class($dto) . "는 사용할수 없습니다.");
        }
        return parent::create($dto);
    }
    protected function modify_process($uid, array $formDatas): UserEntity
    {
        if (!$uid) {
            throw new \Exception("계정 번호가 정의 되지 않았습니다.");
        }
        $entity = $this->getEntity($uid);
        if (!$entity instanceof UserEntity) {
            throw new \Exception("{$uid}에 해당하는 계정을 찾을수 없습니다.");
        }
        if (isset($formDatas['confirmpassword'])) {
            unset($formDatas['confirmpassword']);
        }
        // 변경 사항을 Entity에 적용합니다. (Dirty Tracking 활성화)
        $formDatas[$this->model->getPKField()] = $uid;
        $entity->fill($formDatas);
        // 💡 부모 호출 제거: 변경된 Entity 객체를 반환합니다.
        return $entity;
    }
    public function modify($uid, object $dto): UserEntity
    {
        if (!$dto instanceof UserDTO) {
            throw new RuntimeException(__METHOD__ . "에서 오류발생:" . get_class($dto) . "는 사용할수 없습니다.");
        }
        return parent::modify($uid, $dto);
    }
    //List 검색용
    //FormFilter 조건절 처리
    public function setFilter(string $field, mixed $filter_value): void
    {
        switch ($field) {
            case 'role':
                $where = "FIND_IN_SET(" . $this->model->escape($filter_value) . ", {$this->model->getTable()}.{$field}) > 0";
                //FIND_IN_SET()은 MySQL 함수이므로 CodeIgniter가 이를 일반 컬럼명으로 착각하고 escape하게 되면 오류가 발생합니다. 따라서 ->where($sql, null, false)로 명시하여 escape를 꺼줘야 정상 작동
                $this->model->where($where, null, false);
                break;
            default:
                parent::setFilter($field, $filter_value);
                break;
        }
    }
    //검색어조건절처리
    public function setSearchWord(string $word): void
    {
        $this->model->orLike($this->model->getTable() . '.id', $word, 'both');
        $this->model->orLike($this->model->getTable() . "." . $this->model->getTitleField(), $word, 'both');
        $this->model->orLike($this->model->getTable() . '.email', $word, 'both');
        parent::setSearchWord($word);
    }
}