<?php

namespace bff\view;

use Illuminate\Support\Str;

/**
 * Form
 * @copyright Tamaranga
 */
abstract class Form extends FormBlock
{
    /** @var int|string record id */
    public $recordID = 0;

    /**
     * @param int|string $recordID
     * @return self
     */
    public function load($recordID = 0, $data = [])
    {
        if (! empty($recordID)) {
            $this->setRecordID($recordID);
        }

        $this->onLoad($data);

        return $this;
    }

    /**
     * @return int|string
     */
    public function recordID()
    {
        return $this->recordID;
    }

    /**
     * @param int|string $id
     * @return self
     */
    public function setRecordID($id)
    {
        $this->recordID = $id;

        return $this;
    }

    /**
     * Handle submit request
     * @return \bff\http\Response
     */
    public function onSubmitAction()
    {
        return $this->submit();
    }

    /**
     * Process form submit
     * @return \bff\http\Response
     */
    public function submit()
    {
        $this->app->hook('view.form.beforeSubmit', $this);

        parent::submit();

        $this->app->hook('view.form.submit', $this);

        return $this->getActionResponse();
    }

    /**
     * Process form validation
     * @param array $data
     * @return array|mixed
     */
    public function validate($data = [])
    {
        $this->trigger('beforeValidate', ['data' => & $data]);

        $data = parent::validate($data);

        $this->trigger('afterValidate', ['data' => & $data]);

        return $data;
    }

    /**
     * Reload block content
     * @return \bff\http\Response
     */
    public function onReloadAction()
    {
        $event = $this->request->post('event', TYPE_STR);

        return $this->reloadBlocks($event);
    }

    /**
     * Process form reload blocks
     * @param string $event
     * @return \bff\http\Response
     */
    protected function reloadBlocks($event)
    {
        $data = $this->validate();
        $this->errors->clear();

        $this->trigger('reloadBlocksBefore', ['event' => $event, 'data' => & $data]);

        $this->onLoad($data);
        $reload = [];

        $iterator = function ($block) use ($event, &$reload, &$iterator) {
            if ($block instanceof FormBlock) {
                $html = $block->reloadBlock($event);
                if ($html !== false) {
                    $reload[$block->getKey()] = $html;
                }
                $block->blocksIterator($iterator);
            }
        };

        $this->blocksIterator($iterator);

        $this->respond('reload', $reload);
        $this->respond('event', $event);

        return $this->getActionResponse();
    }

    /**
     * Trigger event for blocks
     * @param $event
     * @param array $data
     */
    public function trigger($event, $data = [])
    {
        $method = 'on' . Str::studly($event) . 'Event';

        $iterator = function ($block) use ($method, $data, &$iterator) {
            if ($block instanceof FormBlock) {
                if (method_exists($block, $method)) {
                    call_user_func([$block, $method], $data);
                }
                $block->blocksIterator($iterator);
            }
        };
        $this->blocksIterator($iterator);
    }
}