<?php
/**
 * Plugin Name:       Advanced QR Code Generator Block
 * Description:       Generate QR codes with custom logos, adjustable sizes, and colors in the Block Editor.
 * Version:           0.1.0
 * Requires at least: 6.0
 * Requires PHP:      7.4
 * Author:            WPaladin
 * License:           GPL-2.0-or-later
 * License URI:       https://www.gnu.org/licenses/gpl-2.0.html
 * Text Domain:       advanced-qr-code-generator-block
 *
 * @category   WordPress_Plugins
 * @package    CreateBlock
 * @author     wpaladin <volodika83@gmail.com>
 * @license    GPL-2.0-or-later https://www.gnu.org/licenses/gpl-2.0.html
 * @link       https://wordpress.org/plugins/advanced-qr-code-generator-block/
 * @phpversion 7.4
 */

if (! defined('ABSPATH')) {
    exit; // Exit if accessed directly.
}
/**
 * Registers the block using a `blocks-manifest.php` file,
 * which improves the performance of block type registration.
 * Behind the scenes, it also registers all assets so they can be enqueued
 * through the block editor in the corresponding context.
 *
 * @see    https://make.wordpress.org/core/2025/03/13/more-efficient-block-type-registration-in-6-8/
 * @see    https://make.wordpress.org/core/2024/10/17/new-block-type-registration-apis-to-improve-performance-in-wordpress-6-7/
 * @return void
 * @since  0.1.0
 */
function aqrcgb_create_block_advanced_qr_code_generator_block_block_init()
{

    /**
     * Registers the block(s) metadata from the `blocks-manifest.php` file.
     * Added to WordPress 6.7 to improve the performance of block type registration.
     *
     * @see https://make.wordpress.org/core/2024/10/17/new-block-type-registration-apis-to-improve-performance-in-wordpress-6-7/
     */
    if (function_exists('wp_register_block_metadata_collection')) {
        wp_register_block_metadata_collection(__DIR__ . '/build', __DIR__ . '/build/blocks-manifest.php');
    }
    /**
     * Registers the block type(s) in the `blocks-manifest.php` file.
     *
     * @see https://developer.wordpress.org/reference/functions/register_block_type/
     */
    $manifest_data = include __DIR__ . '/build/blocks-manifest.php';
    foreach (array_keys($manifest_data) as $block_type) {
        $block_config = aqrcgb_get_block_config($block_type);

        if ($block_config) {
            register_block_type(__DIR__ . "/build/{$block_type}", $block_config);
            
            // Add script translations
            if (function_exists('wp_set_script_translations')) {
                wp_set_script_translations(
                    'create-block-advanced-qr-code-generator-block-editor-script', // Script handle
                    'advanced-qr-code-generator-block', // Text domain
                    plugin_dir_path(__FILE__) . 'languages' // Path to translations directory
                );
            }
        }

    }
}
add_action('init', 'aqrcgb_create_block_advanced_qr_code_generator_block_block_init');

/**
 * Renders the Advanced QR Code Generator block.
 *
 * This callback function generates the HTML output for the QR code block,
 * setting up the necessary wrapper attributes and data attributes based on
 * the provided block attributes.
 *
 * @param array $attributes {
 *                          Block attributes used to configure the QR code.
 *
 * @type string $contentType         The type of content ('text' or other).
 * @type string $content             The text content to encode (if contentType is 'text').
 * @type string $url                 The URL to encode (if contentType is not 'text').
 * @type int    $size                The size of the QR code.
 * @type string $logoUrl             The URL of the logo to embed in the QR code.
 * @type int    $logoSize            The size of the logo.
 * @type string $logoShape           The shape of the logo (e.g., 'circle', 'square').
 * @type string $logoAlignment       The alignment of the logo within the QR code.
 * @type string $qrColor             The color of the QR code.
 * @type string $backgroundColor     The background color of the QR code.
 * @type string $errorCorrectionLevel The error correction level for the QR code.
 * @type int    $quietZone           The size of the quiet zone around the QR code.
 * }
 *
 * @return string The HTML markup for the QR code block.
 */
function aqrcgb_advanced_qr_code_generator_block_render_callback($attributes)
{
    // Get the appropriate content based on type
    $content = isset($attributes['contentType']) && $attributes['contentType'] === 'text'
    ? ($attributes['content'] ?? '')
    : ($attributes['url'] ?? get_permalink());

    $wrapper_attributes = get_block_wrapper_attributes([
        'class'                 => 'wp-block-create-block-advanced-qr-code-generator-block',
        'data-url'              => $content,
        'data-size'             => $attributes['size'],
        'data-logo-url'         => $attributes['logoUrl'],
        'data-logo-size'        => $attributes['logoSize'],
        'data-logo-shape'       => $attributes['logoShape'],
        'data-logo-alignment'   => $attributes['logoAlignment'],
        'data-qr-color'         => $attributes['qrColor'],
        'data-background-color' => $attributes['backgroundColor'],
        'data-error-correction' => $attributes['errorCorrectionLevel'],
        'data-quiet-zone'       => $attributes['quietZone'],
    ]);

    return sprintf(
        '<div %1$s><div class="qr-code-container"></div></div>',
        $wrapper_attributes
    );
}
/**
 * Retrieves the configuration settings for the AQRCGB block.
 *
 * This function returns an array containing configuration options
 * for the AQRCGB block, which may include settings such as block
 * attributes, render callbacks, and other relevant parameters.
 *
 * @param  string $block_type The block type identifier.
 *
 * @return array|null The configuration array for the AQRCGB block, or null if not found.
 */
function aqrcgb_get_block_config($block_type)
{

    switch ($block_type) {
    case 'advanced-qr-code-generator-block':
        return [
            'render_callback' => 'aqrcgb_advanced_qr_code_generator_block_render_callback',
            'attributes'      => [
                'url'                  => [
                    'type'    => 'string',
                    'default' => 'https://example.com',
                ],
                'size'                 => [
                    'type'    => 'number',
                    'default' => 200,
                ],
                'logoUrl'              => [
                    'type'    => 'string',
                    'default' => '',
                ],
                'logoSize'             => [
                    'type'    => 'number',
                    'default' => 50,
                ],
                'logoShape'            => [
                    'type'    => 'string',
                    'default' => 'original',
                ],
                'qrColor'              => [
                    'type'    => 'string',
                    'default' => '#000000',
                ],
                'backgroundColor'      => [
                    'type'    => 'string',
                    'default' => '#ffffff',
                ],
                'logoAlignment'        => [
                    'type'    => 'string',
                    'default' => 'center center',
                ],
                'errorCorrectionLevel' => [
                    'type'    => 'string',
                    'default' => 'H',
                ],
                'quietZone'            => [
                    'type'    => 'number',
                    'default' => 4,
                ],
                'contentType'          => [
                    'type'    => 'string',
                    'default' => 'url',
                ],
                'content'              => [
                    'type'    => 'string',
                    'default' => '',
                ],
            ],
        ];

    // Example of how to add another block type
    case 'another-block':
        return [
            'render_callback' => 'another_block_render_callback',
            'attributes'      => [
                // Block specific attributes
            ],
        ];

    default:
        return null;
    }
}
/**
 * Enqueues frontend assets for the Advanced QR Code Generator block.
 *
 * This function registers and enqueues the necessary JavaScript and CSS files
 * required for the block's frontend functionality.
 *
 * @since 1.0.0
 * 
 * @return void
 */
function aqrcgb_advanced_qr_code_generator_block_frontend_assets() 
{
    if (has_block('create-block/advanced-qr-code-generator-block')) {
        wp_enqueue_script(
            'qrcode-lib',
            plugin_dir_url(__FILE__) . 'assets/js/qrcode.min.js',
            [],
            '1.0.0',
            true
        );
    }
}
add_action('wp_enqueue_scripts', 'aqrcgb_advanced_qr_code_generator_block_frontend_assets');
/**
 * Enqueues editor-specific assets and localizes script data.
 * 
 * This function adds plugin URL data to the editor script to allow
 * loading of local assets like the QR code library from the correct path.
 *
 * @since 1.0.0
 * 
 * @return void
 */
function aqrcgb_enqueue_editor_assets()
{
    wp_localize_script(
        'create-block-advanced-qr-code-generator-block-editor-script',
        'aqrcgb_block_data',
        array(
            'plugin_url' => plugin_dir_url(__FILE__),
        )
    );
}
add_action('enqueue_block_editor_assets', 'aqrcgb_enqueue_editor_assets');