<?php

namespace App\Models;

use CodeIgniter\Model;

abstract class CommonModel extends Model
{
    protected $table            = '';
    protected $primaryKey       = '';
    protected $useAutoIncrement = true;
    protected $returnType       = 'array';

    protected $useSoftDeletes   = false;
    protected $protectFields    = true;
    protected $allowedFields    = [];

    protected bool $allowEmptyInserts = false;
    protected bool $updateOnlyChanged = true;

    protected array $casts = [];
    protected array $castHandlers = [];

    // Dates
    protected $useTimestamps = false;
    protected $dateFormat    = 'datetime';
    protected $createdField  = 'created_at';
    protected $updatedField  = 'updated_at';
    protected $deletedField  = 'deleted_at';

    // Validation
    protected $validationRules      = [];
    protected $validationMessages   = [];
    protected $skipValidation       = false;
    protected $cleanValidationRules = true;

    // Callbacks
    protected $allowCallbacks = true;
    protected $beforeInsert   = [];
    protected $afterInsert    = [];
    protected $beforeUpdate   = [];
    protected $afterUpdate    = [];
    protected $beforeFind     = [];
    protected $afterFind      = [];
    protected $beforeDelete   = [];
    protected $afterDelete    = [];

    protected function __construct()
    {
        parent::__construct();
    }

    abstract public function getPK(): string;
    abstract public function getTitleField(): string;
    abstract public function setCreateField();
    abstract public function setModifyField();

    final public function getFields(): array
    {
        return $this->allowedFields;
    }
    final public function setFields(array $fields): void
    {
        $this->allowedFields = $fields;
    }
    final public function getRules(array $options): array
    {
        return  $this->getValidationRules($options); //options=>except or only
    }
    final public function setRules(array $fields, $rules = []): void
    {
        foreach ($fields as $field) {
            $rules = $this->getFieldRule($field, $rules);
        }
        $this->setValidationRules($rules);
    }


    final public function getUUID(): string
    {
        $randomBytes = bin2hex(random_bytes(32));
        return sprintf(
            '%08s-%04s-%04x-%04x-%12s',
            substr($randomBytes, 0, 8),
            substr($randomBytes, 8, 4),
            substr($randomBytes, 12, 4),
            substr($randomBytes, 16, 4),
            substr($randomBytes, 20, 12)
        );
    }
    protected function getUUIDFieldRule($condition = 'required'): string
    {
        return "{$condition}|regex_match[/^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}/]";
    }
    protected function getFieldRule(string $field, array $rules): array
    {
        switch ($field) {
            case $this->getPK():
                //수동입력인경우
                $rules[$field] = !$this->useAutoIncrement ? $this->getUUIDFieldRule() . "|is_unique[{$this->table}.{$field}]" : "required|numeric";
                break;
            case $this->getTitleField():
                $rules[$field] =  "required|trim|string";
                break;
            case "passwd":
                $rules[$field] = "required|trim|string";
                break;
            case "confirmpassword":
                $rules["confirmpassword"] = "required|trim|string|matches[passwd]";
                break;
            case "email":
                $rules[$field] =  "if_exist|trim|valid_email";
                break;
            case 'image':
                $rules[$field] =  "is_image[{$field}]|mime_in[{$field},image/jpg,image/jpeg,image/gif,image/png,image/webp]|max_size[{$field},300]|max_dims[{$field},2048,768]";
                break;
            case "updated_at":
            case "created_at":
            case "deleted_at":
                $rules[$field] = "if_exist|valid_date";
                break;
            default:
                $rules[$field] = "if_exist|string";
                break;
        }
        return $rules;
    }

    final public function getEntity()
    {
        return $this->asObject($this->returnType)->first();
    }
    final public function getEntitys(): array
    {
        return $this->asObject($this->returnType)->findAll();
    }

    private function save_process($entity)
    {
        // echo var_export($entity, true);
        // exit;
        if ($entity->hasChanged()) {
            if (!$this->save($entity)) {
                log_message("error", __FUNCTION__ . "에서 호출:" . $this->getLastQuery());
                log_message("error", implode("\n", $this->errors()));
                throw new \Exception(__FUNCTION__ . " 오류 발생.\n" . $this->getLastQuery() . "\n" . var_dump($this->errors(), true));
            }
        } else {
            throw new \Exception(__FUNCTION__ . " 오류 발생.\n 기존정보와 동일하여 수정되지 않았습니다.");
        }
        return $entity;
    }

    //create , modify 직전 작업용 작업
    protected function changeFormData(string $field, array $formDatas, $entity)
    {
        switch ($field) {
            case "passwd":
                if (array_key_exists($field, $formDatas) && $formDatas[$field]) {
                    $entity->$field = password_hash($formDatas[$field], PASSWORD_DEFAULT);
                }
                break;
            case "content":
                if (array_key_exists($field, $formDatas) && $formDatas[$field]) {
                    $entity->$field = htmlentities($formDatas[$field]);
                }
                break;
            default:
                if (array_key_exists($field, $formDatas) && $formDatas[$field]) {
                    $entity->$field = $formDatas[$field];
                }
                break;
        }
        return $entity;
    }

    protected function create_process($entity, array $formDatas = [])
    {
        foreach ($this->getFields() as $field) {
            $entity = $this->changeFormData($field, $formDatas, $entity);
        }
        $entity = $this->save_process($entity);
        //primaryKey가 자동입력이면
        if ($this->useAutoIncrement) {
            $pk = $this->getPK();
            $entity->$pk = $this->getInsertID();
        }
        return $entity;
    }
    protected function modify_process($entity, array $formDatas = [])
    {
        foreach ($this->getFields() as $field) {
            $entity = $this->changeFormData($field, $formDatas, $entity);
        }
        return $this->save_process($entity);
    }
}