<?php

namespace Picea\Ui\Method;

use Psr\Http\Message\ServerRequestInterface;

class FormHandler {
    const DEFAULT_METHODS = [
        "DELETE", "PATCH", "POST", "PUT",
    ];

    public bool $sent = false;

    public bool $validateCsrfToken = true;

    public /* mixed */ $executionStatus = null;

    public ? bool $validationStatus = null;
    
    public FormContext $context;

    protected ServerRequestInterface $request;

    protected FormInterface $form;

    public array $acceptedMethods = self::DEFAULT_METHODS;

    public function __construct(ServerRequestInterface $request, FormInterface $form, ? FormContextInterface $context = null)
    {
        $this->request = $request;
        $this->sent = $this->requestSent();
        $this->form = $form;
        
        if ( $context ) {
            $this->context = $context;
        }
        else {
            $this->context = method_exists($form, 'getContext') ? $form->getContext($request) : new FormContext($request);
        }
        
        $this->request->withAttribute('picea.context', $this->context);

        $this->initialize();
    }

    protected function initialize() : void
    {
        $this->form->initialize($this->context);

        if ( $this->sent && $this->context->formSent() ) {
            if ( $this->validationStatus = $this->form->validate($this->context) ) {
                $this->context->formExecutionStatus = $this->executionStatus = $this->form->execute($this->context);
                $this->context->formExecuted = true;
            }
        }
    }

    protected function requestSent() : bool
    {
        return in_array(strtoupper($this->request->getMethod()), array_map('strtoupper', $this->acceptedMethods));
    }

    protected function honeyPot() : bool
    {
        $this->request->getServerParams();
    }
}