<?php

use Brizy\Utils\UUId;

class Brizy_Editor_BlockScreenshotApi extends Brizy_Admin_AbstractApi
{

    const nonce = 'brizy-api';

    const AJAX_CREATE_BLOCK_SCREENSHOT = '_create_block_screenshot';
    const AJAX_UPDATE_BLOCK_SCREENSHOT = '_update_block_screenshot';

    /**
     * @var Brizy_Editor_Post
     */
    private $post;

    /**
     * @var array
     */
    private $blockTypes;

    /**
     * Brizy_Editor_BlockScreenshotApi constructor.
     *
     * @param $post
     *
     * @throws Exception
     */
    public function __construct($post)
    {
        $this->post = $post;
        $this->blockTypes = array(
            Brizy_Editor_Screenshot_Manager::BLOCK_TYPE_NORMAL,
            Brizy_Editor_Screenshot_Manager::BLOCK_TYPE_GLOBAL,
            Brizy_Editor_Screenshot_Manager::BLOCK_TYPE_SAVED,
            Brizy_Editor_Screenshot_Manager::BLOCK_TYPE_LAYOUT,
        );
        parent::__construct();
    }

    protected function getRequestNonce()
    {
        return $this->param('hash');
    }


    protected function initializeApiActions()
    {
        $pref = 'wp_ajax_'.Brizy_Editor::prefix();
        $pref_nopriv = 'wp_ajax_nopriv_'.Brizy_Editor::prefix();
        add_action($pref.self::AJAX_CREATE_BLOCK_SCREENSHOT, array($this, 'saveBlockScreenShot'));
        add_action($pref.self::AJAX_UPDATE_BLOCK_SCREENSHOT, array($this, 'saveBlockScreenShot'));
        add_action($pref_nopriv.self::AJAX_CREATE_BLOCK_SCREENSHOT, array($this, 'saveBlockScreenShot'));
        add_action($pref_nopriv.self::AJAX_UPDATE_BLOCK_SCREENSHOT, array($this, 'saveBlockScreenShot'));
    }

    public function saveBlockScreenShot()
    {

        $this->verifyNonce(self::nonce);

        session_write_close();

        if (empty($_REQUEST['block_type']) || !in_array(
                $_REQUEST['block_type'],
                $this->blockTypes
            ) || empty($_REQUEST['ibsf'])) {
            $this->error(400, __('Bad request', 'brizy'));
        }

        $brizyPost = isset($_REQUEST['post']) ? $_REQUEST['post'] : null;
        $base64 = $_REQUEST['ibsf'];
        $imageContent = base64_decode($base64);

        if (isset($_REQUEST['id'])) {
            $screenId = $_REQUEST['id'];
        } else {
            $screenId = UUId::uuid();
        }

        if (false === $imageContent) {
            $this->error(400, __('Invalid image content', 'brizy'));
        }

        $manager = new Brizy_Editor_Screenshot_Manager(new Brizy_Editor_UrlBuilder($brizyPost));

        try {
            $result = $manager->saveScreenshot($screenId, $_REQUEST['block_type'], $imageContent, $brizyPost);
        } catch (Exception $e) {
            $this->error(400, $e->getMessage());
        }

        if ($result) {
            $screenPath = $manager->getScreenshot($screenId, $brizyPost);
            wp_send_json_success(array('id' => $screenId, 'file_name' => $screenPath));
        }
    }

}