AMZ-Search-Qyuery

					<?php
/**
 * Plugin Name: WP Turbo Amazon Affiliate
 * Plugin URI:  https://wpturbo.dev
 * Description: Adds Amazon affiliate links with a custom search query to your posts.
 * Version:     1.0.0
 * Author:      WP Turbo
 * Author URI:  https://wpturbo.dev
 * Text Domain: wpturbo
 */

namespace WPTurbo;

use WP_Turbo;

if ( ! defined( 'ABSPATH' ) ) {
    exit; // Exit if accessed directly.
}

/**
 * Adds a shortcode to display an Amazon affiliate link for Amazon Spain with a search query.
 *
 * @param array $atts Shortcode attributes.
 * @return string HTML link styled as a button with the affiliate ID.
 */
function wpturbo_amazon_affiliate_link( $atts ) {
    $atts = shortcode_atts( [
        'search' => '',
        'text'   => 'Compra en Amazon',
    ], $atts, 'amazon_affiliate' );

    $affiliate_id = 'malloshopp-21';

    $search_query = ! empty( $atts['search'] ) ? $atts['search'] : 'cloradores salinos';
    $search_query_encoded = urlencode( $search_query );
    $url = "https://www.amazon.es/s?k={$search_query_encoded}&tag={$affiliate_id}";

    $button_style = "display: inline-block; padding: 10px 20px; color: #fff; background-color: #ff9900; text-align: center; text-decoration: none; border-radius: 5px;";

    return "<a href="{$url}" target="_blank" rel="nofollow" style="{$button_style}">{$atts['text']}</a>";
}
add_shortcode( 'amazon_affiliate', 'WPTurbowpturbo_amazon_affiliate_link' );

/**
 * Adds a custom metabox to the post edit screen.
 */
function wpturbo_add_custom_metabox() {
    add_meta_box(
        'wpturbo_amazon_affiliate_metabox',
        'Amazon Affiliate Link',
        'WPTurbowpturbo_render_custom_metabox',
        'post',
        'side',
        'default'
    );
}
add_action( 'add_meta_boxes', 'WPTurbowpturbo_add_custom_metabox' );

/**
 * Renders the custom metabox.
 *
 * @param WP_Post $post The current post object.
 */
function wpturbo_render_custom_metabox( $post ) {
    // Add a nonce field so we can check for it later.
    wp_nonce_field( 'wpturbo_save_custom_metabox_data', 'wpturbo_custom_metabox_nonce' );

    $search_value = get_post_meta( $post->ID, '_wpturbo_amazon_search', true );
    ?>

    <label for="wpturbo_amazon_search">Consulta de Búsqueda de Amazon</label>
    <input type="text" id="wpturbo_amazon_search" name="wpturbo_amazon_search" value="<?php echo esc_attr( $search_value ); ?>" style="width: 100%;" />

    <?php
}

/**
 * Saves the custom metabox data when the post is saved.
 *
 * @param int $post_id The ID of the post being saved.
 */
function wpturbo_save_custom_metabox_data( $post_id ) {
    if ( ! isset( $_POST['wpturbo_custom_metabox_nonce'] ) ) {
        return;
    }

    if ( ! wp_verify_nonce( $_POST['wpturbo_custom_metabox_nonce'], 'wpturbo_save_custom_metabox_data' ) ) {
        return;
    }

    if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) {
        return;
    }

    if ( ! current_user_can( 'edit_post', $post_id ) ) {
        return;
    }

    if ( ! isset( $_POST['wpturbo_amazon_search'] ) ) {
        return;
    }

    $search_data = sanitize_text_field( $_POST['wpturbo_amazon_search'] );
    update_post_meta( $post_id, '_wpturbo_amazon_search', $search_data );
}
add_action( 'save_post', 'WPTurbowpturbo_save_custom_metabox_data' );

/**
 * Automatically add the Amazon affiliate shortcode to each post's content.
 *
 * @param string $content The post content.
 * @return string The modified post content.
 */
function wpturbo_add_affiliate_link_to_content( $content ) {
    global $post;

    $search_query = get_post_meta( $post->ID, '_wpturbo_amazon_search', true );

    $search_query = ! empty( $search_query ) ? $search_query : 'cloradores salinos';

    if ( ! empty( $search_query ) ) {
        $shortcode_after_paragraph = "[amazon_affiliate search="{$search_query}" text="Mejores {$search_query} - Comprar en Amazon"]";
        $shortcode_end_of_post = "[amazon_affiliate search="{$search_query}" text="Mejores ofertas en {$search_query} - Comprar en Amazon"]";
        
        $affiliate_link_after_paragraph = do_shortcode( $shortcode_after_paragraph );
        $affiliate_link_end_of_post = do_shortcode( $shortcode_end_of_post );

        // Insert the affiliate link after the first paragraph.
        $content = preg_replace( '/</p>/', "</p>{$affiliate_link_after_paragraph}", $content, 1 );

        // Append the affiliate link at the end of the content.
        $content .= $affiliate_link_end_of_post;
    }

    return $content;
}
add_filter( 'the_content', 'WPTurbowpturbo_add_affiliate_link_to_content' );

/**
 * Adds the Amazon search field to the quick edit screen.
 *
 * @param string $column_name The name of the column to edit.
 * @param string $post_type The post type.
 */
function wpturbo_add_quick_edit( $column_name, $post_type ) {
    if ( 'amazon_search' !== $column_name || 'post' !== $post_type ) {
        return;
    }

    ?>
    <fieldset class="inline-edit-col-right">
        <div class="inline-edit-col">
            <label>
                <span class="title">Amazon Search Query</span>
                <span class="input-text-wrap"><input type="text" name="wpturbo_amazon_search" value=""></span>
            </label>
        </div>
    </fieldset>
    <?php
}
add_action( 'quick_edit_custom_box', 'WPTurbowpturbo_add_quick_edit', 10, 2 );

/**
 * Enqueues the script for the quick edit functionality.
 */
function wpturbo_enqueue_quick_edit_script() {
    wp_enqueue_script(
        'wpturbo-quick-edit',
        plugins_url( 'quick-edit.js', __FILE__ ),
        [ 'jquery', 'inline-edit-post' ],
        false,
        true
    );
}
add_action( 'admin_enqueue_scripts', 'WPTurbowpturbo_enqueue_quick_edit_script' );

/**
 * Saves the custom field from the quick edit screen.
 *
 * @param int $post_id The ID of the post being saved.
 */
function wpturbo_save_quick_edit_data( $post_id ) {
    if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) {
        return;
    }

    if ( ! current_user_can( 'edit_post', $post_id ) ) {
        return;
    }

    if ( ! isset( $_POST['wpturbo_amazon_search'] ) ) {
        return;
    }

    $search_data = sanitize_text_field( $_POST['wpturbo_amazon_search'] );
    update_post_meta( $post_id, '_wpturbo_amazon_search', $search_data );
}
add_action( 'save_post', 'WPTurbowpturbo_save_quick_edit_data' );

/**
 * Adds the Amazon search column to the posts list table.
 *
 * @param array $columns The existing columns.
 * @return array The modified columns.
 */
function wpturbo_add_amazon_search_column( $columns ) {
    $columns['amazon_search'] = 'Amazon Search Query';
    return $columns;
}
add_filter( 'manage_posts_columns', 'WPTurbowpturbo_add_amazon_search_column' );

/**
 * Populates the Amazon search column with data.
 *
 * @param string $column_name The name of the column.
 * @param int $post_id The ID of the post.
 */
function wpturbo_populate_amazon_search_column( $column_name, $post_id ) {
    if ( 'amazon_search' === $column_name ) {
        $search_query = get_post_meta( $post_id, '_wpturbo_amazon_search', true );
        echo esc_html( $search_query );
    }
}
add_action( 'manage_posts_custom_column', 'WPTurbowpturbo_populate_amazon_search_column', 10, 2 );