<?php

namespace Ulmus\Attribute\Property;

use Ulmus\Attribute\Attribute;
use Ulmus\Repository;

#[\Attribute]
class Join implements ResettablePropertyInterface {
    public function __construct(
        public string $type,
        public null|string|\Stringable|array $key  = null,
        public null|string|\Stringable|array $foreignKey = null,
        public null|string $entity = null,
        public null|string $alias = null,
    ) {
        $this->key = Attribute::handleArrayField($this->key);
        $this->foreignKey = Attribute::handleArrayField($this->foreignKey);
    }

    ## AWAITING THE Closures in constant expression from PHP 8.5 !
    public function foreignKey(? Repository $repository = null) : mixed
    {
        if (is_string($this->foreignKey)) {
            if (str_starts_with($this->foreignKey, 'fn(') && str_contains($this->foreignKey, '=>')) {
                $closure = eval("return {$this->foreignKey};");

                return $repository ? $closure($repository) : $closure;
            }

            return $this->entity::field($this->foreignKey, $this->alias);
        }

        return $this->foreignKey;
    }

    public function isOneToOne() : bool
    {
        return true;
    }

    public function isOneToMany() : bool
    {
        return false;
    }

    public function isManyToMany() : bool
    {
        return false;
    }
}