<?php

declare(strict_types=1);

namespace App\FormBuilder\Publishing;

use App\Models\FormBuilder\FormField;
use App\Models\FormBuilder\FormFieldBinding;
use App\Models\FormBuilder\FormSchema;

/**
 * RFC-WS-6 §3 (Q13) — given that the binding's existence is enforced
 * upstream by FormSchemaService::assertRequiredBindingsPresent(), this
 * guard adds the `is_identity_key=true` flag check.
 */
final readonly class RequiresIdentityKeyBinding implements PublishGuard
{
    public function __construct(
        private string $entity,
        private string $attribute,
    ) {}

    public function code(): string
    {
        return "requires_identity_key_binding:{$this->entity}:{$this->attribute}";
    }

    public function evaluate(FormSchema $schema): PublishGuardResult
    {
        /** @var FormField $field */
        foreach ($schema->fields as $field) {
            /** @var FormFieldBinding $binding */
            foreach ($field->bindings as $binding) {
                if ($binding->target_entity === $this->entity
                    && $binding->target_attribute === $this->attribute
                    && (bool) $binding->is_identity_key
                ) {
                    return PublishGuardResult::passed($this->code());
                }
            }
        }

        return PublishGuardResult::failed(
            guardCode: $this->code(),
            messageKey: 'form_builder_publish_guards.requires_identity_key_binding',
            context: ['entity' => $this->entity, 'attribute' => $this->attribute],
        );
    }
}