ecommerce_image_tool.php

<?php
/**
 * Plugin Name: eCommerce Image Tool
 * Plugin URI: https://github.com/krysits/ecommerce-image-plugin
 * Description: Batch resize and optimize images for eCommerce platforms
 * Version: 0.1
 * Author: Kristaps Ledins <a href="https://github.com/krysits">@krysits</a>
 * License: GPLv3
 * Text Domain: ecommerce-image-tool
 * Domain Path: /languages
 * Started: 2025-10-15
 */

if (!defined('ABSPATH')) {
    exit;
}

define('ECIT_VERSION', '0.1');
define('ECIT_PLUGIN_DIR', plugin_dir_path(__FILE__));
define('ECIT_PLUGIN_URL', plugin_dir_url(__FILE__));

class EcommerceImageTool {
    private static $instance = null;

    public static function get_instance() {
        if (null === self::$instance) {
            self::$instance = new self();
        }
        return self::$instance;
    }
    function media_include_script() {
        if ( ! did_action( 'wp_enqueue_media' ) ) {
            wp_enqueue_media();
        }
    }
    public function __construct() {
        add_action('admin_menu', [$this, 'add_admin_menu']);
        add_action('admin_enqueue_scripts', [$this, 'media_include_script']);
        add_action('admin_enqueue_scripts', [$this, 'enqueue_admin_assets']);
        add_action('wp_ajax_ecit_process_images', [$this, 'ajax_process_images']);
        add_action('wp_ajax_ecit_get_status', [$this, 'ajax_get_status']);
    }

    public function add_admin_menu() {
        add_media_page(
            __('eCommerce Image Tool', 'ecommerce-image-tool'),
            __('Image Optimizer', 'ecommerce-image-tool'),
            'manage_options',
            'ecit-tool',
            [$this, 'render_admin_page']
        );
    }

    public function enqueue_admin_assets($hook) {
        if ($hook !== 'media_page_ecit-tool') {
            return;
        }

        wp_enqueue_style(
            'ecit-admin',
            ECIT_PLUGIN_URL . 'assets/admin.css',
            [],
            ECIT_VERSION
        );

        wp_enqueue_script(
            'ecit-admin',
            ECIT_PLUGIN_URL . 'assets/admin.js',
            ['jquery',],
            ECIT_VERSION,
            true
        );

        wp_localize_script('ecit-admin', 'ecitData', [
            'ajax_url' => admin_url('admin-ajax.php'),
            'nonce' => wp_create_nonce('ecit_nonce'),
            'strings' => [
                'processing' => __('Processing...', 'ecommerce-image-tool'),
                'complete' => __('Complete!', 'ecommerce-image-tool'),
                'error' => __('Error occurred', 'ecommerce-image-tool'),
            ]
        ]);
    }

    public function render_admin_page() {
        if (!current_user_can('manage_options')) {
            wp_die(__('Unauthorized', 'ecommerce-image-tool'));
        }
        ?>
        <div class="wrap ecit-container">
            <h1><?php _e('eCommerce Image Tool', 'ecommerce-image-tool'); ?></h1>
            
            <div class="ecit-settings">
                <h2><?php _e('Image Processing Settings', 'ecommerce-image-tool'); ?></h2>
                
                <table class="form-table">
                    <tr>
                        <th scope="row">
                            <label for="image-format"><?php _e('Image Format', 'ecommerce-image-tool'); ?></label>
                        </th>
                        <td>
                            <select id="image-format" name="format">
                                <option value="jpg">JPG</option>
                                <option value="png">PNG</option>
                                <option value="webp">WEBP</option>
                                <option value="gif">GIF</option>
                            </select>
                        </td>
                    </tr>
                    <tr>
                        <th scope="row">
                            <label for="output-type"><?php _e('Output Type', 'ecommerce-image-tool'); ?></label>
                        </th>
                        <td>
                            <select id="output-type" name="output_type">
                                <option value="square"><?php _e('Square', 'ecommerce-image-tool'); ?></option>
                                <option value="landscape"><?php _e('Landscape', 'ecommerce-image-tool'); ?></option>
                                <option value="both"><?php _e('Both', 'ecommerce-image-tool'); ?></option>
                            </select>
                        </td>
                    </tr>
                    <tr>
                        <th scope="row">
                            <label for="target-height"><?php _e('Target Height (px)', 'ecommerce-image-tool'); ?></label>
                        </th>
                        <td>
                            <input type="number" id="target-height" name="height" value="600" min="100" max="2000">
                        </td>
                    </tr>
                    <tr>
                        <th scope="row">
                            <label for="quality"><?php _e('Quality (%)', 'ecommerce-image-tool'); ?></label>
                        </th>
                        <td>
                            <input type="number" id="quality" name="quality" value="85" min="1" max="100">
                        </td>
                    </tr>
                </table>
            </div>

            <div class="ecit-actions">
                <h2><?php _e('Process Images', 'ecommerce-image-tool'); ?></h2>
                <p><?php _e('Select images from your media library to resize and optimize.', 'ecommerce-image-tool'); ?></p>
                
                <button id="select-images-btn" class="button button-primary">
                    <?php _e('Select Images', 'ecommerce-image-tool'); ?>
                </button>
                
                <button id="process-images-btn" class="button button-secondary" disabled>
                    <?php _e('Start Processing', 'ecommerce-image-tool'); ?>
                </button>
            </div>

            <div id="ecit-progress" class="ecit-progress" style="display:none;">
                <h3><?php _e('Processing Progress', 'ecommerce-image-tool'); ?></h3>
                <div class="progress-bar">
                    <div class="progress-fill"></div>
                </div>
                <p class="progress-text">0%</p>
                <div id="ecit-log" class="ecit-log"></div>
            </div>

            <div id="ecit-results" class="ecit-results" style="display:none;">
                <h3><?php _e('Processing Results', 'ecommerce-image-tool'); ?></h3>
                <div id="results-content"></div>
                <a href="<?php echo esc_url(admin_url('upload.php')); ?>" class="button button-primary">
                    <?php _e('View Media Library', 'ecommerce-image-tool'); ?>
                </a>
            </div>
        </div>
        <?php
    }

    public function ajax_process_images() {
        check_ajax_referer('ecit_nonce');

        if (!current_user_can('manage_options')) {
            wp_send_json_error(__('Unauthorized', 'ecommerce-image-tool'));
        }

        $image_ids = isset($_POST['image_ids']) ? array_map('intval', $_POST['image_ids']) : [];
        $format = isset($_POST['format']) ? sanitize_text_field($_POST['format']) : 'jpg';
        $output_type = isset($_POST['output_type']) ? sanitize_text_field($_POST['output_type']) : 'square';
        $height = isset($_POST['height']) ? intval($_POST['height']) : 600;
        $quality = isset($_POST['quality']) ? intval($_POST['quality']) : 85;

        $results = [];
        $processed = 0;
        $total = count($image_ids);

        foreach ($image_ids as $image_id) {
            $result = $this->process_single_image($image_id, $format, $output_type, $height, $quality);
            $results[] = $result;
            $processed++;

            wp_send_json([
                'success' => true,
                'progress' => ($processed / $total) * 100,
                'processed' => $processed,
                'total' => $total,
                'current_result' => $result
            ]);
        }

        wp_send_json(['success' => true, 'results' => $results]);
    }

    private function process_single_image($image_id, $format, $output_type, $height, $quality) {
        $file = get_attached_file($image_id);

        if (!$file || !file_exists($file)) {
            return [
                'id' => $image_id,
                'status' => 'error',
                'message' => __('File not found', 'ecommerce-image-tool')
            ];
        }

        try {
            $upload_dir = wp_upload_dir();
            $base_dir = $upload_dir['basedir'];
            
            // Create output directories
            $this->ensure_output_dirs($base_dir);

            if (!extension_loaded('gd')) {
                throw new Exception(__('GD extension not installed', 'ecommerce-image-tool'));
            }

            $image = wp_get_image_editor($file);

            if (is_wp_error($image)) {
                throw new Exception($image->get_error_message());
            }

            // Get original dimensions
            $size = $image->get_size();
            $aspect_ratio = $size['width'] / $size['height'];

            // Process square format
            if ($output_type === 'square' || $output_type === 'both') {
                $square_size = $height;
                $image->resize($square_size, $square_size, true);
                $square_file = $this->get_output_path($file, 'square', $format, $height);
                $image->save($square_file, $format);
                $this->set_image_quality($square_file, $quality, $format);
            }

            // Process landscape format
            if ($output_type === 'landscape' || $output_type === 'both') {
                $image = wp_get_image_editor($file); // Reload original
                $landscape_width = intval($height * $aspect_ratio);
                $image->resize($landscape_width, $height);
                $landscape_file = $this->get_output_path($file, 'landscape', $format, $height);
                $image->save($landscape_file, $format);
                $this->set_image_quality($landscape_file, $quality, $format);
            }

            return [
                'id' => $image_id,
                'status' => 'success',
                'message' => sprintf(__('Image %d processed successfully', 'ecommerce-image-tool'), $image_id)
            ];

        } catch (Exception $e) {
            return [
                'id' => $image_id,
                'status' => 'error',
                'message' => $e->getMessage()
            ];
        }
    }

    private function ensure_output_dirs($base_dir) {
        $dirs = [
            $base_dir . '/ecit-square',
            $base_dir . '/ecit-landscape'
        ];

        foreach ($dirs as $dir) {
            if (!is_dir($dir)) {
                wp_mkdir_p($dir);
            }
        }
    }

    private function get_output_path($original_file, $type, $format, $height) {
        $upload_dir = wp_upload_dir();
        $base_dir = $upload_dir['basedir'];
        $filename = pathinfo($original_file, PATHINFO_FILENAME);
        $new_filename = $filename . '_' . $type . '_' . $height . '.' . $format;
        
        return $base_dir . '/ecit-' . $type . '/' . $new_filename;
    }

    private function set_image_quality(&$file, $quality, $format) {
        if ($format === 'jpg' && extension_loaded('imagick')) {
            $image = new Imagick($file);
            $image->setImageCompressionQuality($quality);
            $image->writeImage();
            $image->destroy();
        }
    }

    public function ajax_get_status() {
        check_ajax_referer('ecit_nonce');

        if (!current_user_can('manage_options')) {
            wp_send_json_error(__('Unauthorized', 'ecommerce-image-tool'));
        }

        wp_send_json(['success' => true]);
    }
}

// Initialize plugin
EcommerceImageTool::get_instance();