<?php
/**
 * Plugin Name: CannaIQ Menus
 * Plugin URI: https://cannaiq.co
 * Description: Display cannabis product menus from CannaIQ with Elementor integration. Real-time menu data updated daily.
 * Version: 1.7.0
 * Author: CannaIQ
 * Author URI: https://cannaiq.co
 * License: GPL v2 or later
 * Text Domain: cannaiq-menus
 * Requires PHP: 7.4
 */

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

define('CANNAIQ_MENUS_VERSION', '1.7.0');
define('CANNAIQ_MENUS_API_URL', 'https://cannaiq.co/api/v1');
define('CANNAIQ_MENUS_PLUGIN_DIR', plugin_dir_path(__FILE__));
define('CANNAIQ_MENUS_PLUGIN_URL', plugin_dir_url(__FILE__));

/**
 * Main Plugin Class
 */
class CannaIQ_Menus_Plugin {

    private static $instance = null;

    public static function instance() {
        if (is_null(self::$instance)) {
            self::$instance = new self();
        }
        return self::$instance;
    }

    public function __construct() {
        add_action('plugins_loaded', [$this, 'init']);
        add_action('elementor/elements/categories_registered', [$this, 'register_elementor_category']);
        add_action('elementor/widgets/register', [$this, 'register_elementor_widgets']);
        add_action('admin_menu', [$this, 'add_admin_menu']);
        add_action('admin_init', [$this, 'register_settings']);
        add_action('wp_enqueue_scripts', [$this, 'enqueue_scripts']);
    }

    /**
     * Register CannaIQ Elementor Widget Category
     */
    public function register_elementor_category($elements_manager) {
        $elements_manager->add_category(
            'cannaiq',
            [
                'title' => __('CannaIQ', 'cannaiq-menus'),
                'icon' => 'fa fa-cannabis',
            ]
        );
    }

    public function init() {
        // Initialize plugin
        load_plugin_textdomain('cannaiq-menus', false, dirname(plugin_basename(__FILE__)) . '/languages');

        // Load Elementor Dynamic Tags (if Elementor is active)
        if (did_action('elementor/loaded')) {
            require_once CANNAIQ_MENUS_PLUGIN_DIR . 'widgets/dynamic-tags.php';
        }

        // Register shortcodes - primary CannaIQ shortcodes
        add_shortcode('cannaiq_products', [$this, 'products_shortcode']);
        add_shortcode('cannaiq_product', [$this, 'single_product_shortcode']);

        // DEPRECATED: Legacy shortcode alias for backward compatibility only
        add_shortcode('crawlsy_products', [$this, 'products_shortcode']);
        add_shortcode('crawlsy_product', [$this, 'single_product_shortcode']);
    }

    /**
     * Register Elementor Widgets
     */
    public function register_elementor_widgets($widgets_manager) {
        require_once CANNAIQ_MENUS_PLUGIN_DIR . 'widgets/product-grid.php';
        require_once CANNAIQ_MENUS_PLUGIN_DIR . 'widgets/single-product.php';
        require_once CANNAIQ_MENUS_PLUGIN_DIR . 'widgets/brand-grid.php';
        require_once CANNAIQ_MENUS_PLUGIN_DIR . 'widgets/category-list.php';
        require_once CANNAIQ_MENUS_PLUGIN_DIR . 'widgets/specials-grid.php';
        require_once CANNAIQ_MENUS_PLUGIN_DIR . 'widgets/product-loop.php';

        $widgets_manager->register(new \CannaIQ_Menus_Product_Grid_Widget());
        $widgets_manager->register(new \CannaIQ_Menus_Single_Product_Widget());
        $widgets_manager->register(new \CannaIQ_Menus_Brand_Grid_Widget());
        $widgets_manager->register(new \CannaIQ_Menus_Category_List_Widget());
        $widgets_manager->register(new \CannaIQ_Menus_Specials_Grid_Widget());
        $widgets_manager->register(new \CannaIQ_Product_Loop_Widget());
    }

    /**
     * Enqueue Scripts and Styles
     */
    public function enqueue_scripts() {
        wp_enqueue_style(
            'cannaiq-menus-styles',
            CANNAIQ_MENUS_PLUGIN_URL . 'assets/css/cannaiq-menus.css',
            [],
            CANNAIQ_MENUS_VERSION
        );

        wp_enqueue_script(
            'cannaiq-menus-script',
            CANNAIQ_MENUS_PLUGIN_URL . 'assets/js/cannaiq-menus.js',
            ['jquery'],
            CANNAIQ_MENUS_VERSION,
            true
        );
    }

    /**
     * Add Admin Menu
     */
    public function add_admin_menu() {
        add_menu_page(
            'CannaIQ Menus',
            'CannaIQ Menus',
            'manage_options',
            'cannaiq-menus',
            [$this, 'admin_page'],
            'dashicons-products',
            30
        );
    }

    /**
     * Register Plugin Settings
     */
    public function register_settings() {
        register_setting('cannaiq_menus_settings', 'cannaiq_api_token');

        // MIGRATION: Auto-migrate API token from old Crawlsy plugin
        $old_crawlsy_token = get_option('crawlsy_api_token');
        if (!get_option('cannaiq_api_token') && $old_crawlsy_token) {
            update_option('cannaiq_api_token', $old_crawlsy_token);
        }
    }

    /**
     * Admin Page
     */
    public function admin_page() {
        ?>
        <div class="wrap">
            <h1>CannaIQ Menus Settings</h1>
            <p>Version <?php echo CANNAIQ_MENUS_VERSION; ?> by <a href="https://cannaiq.co" target="_blank">CannaIQ</a></p>
            <p class="description">Display real-time cannabis menus with data updated daily from CannaIQ.</p>

            <form method="post" action="options.php">
                <?php settings_fields('cannaiq_menus_settings'); ?>
                <?php do_settings_sections('cannaiq_menus_settings'); ?>

                <table class="form-table">
                    <tr>
                        <th scope="row"><label for="cannaiq_api_token">API Token</label></th>
                        <td>
                            <input type="password" id="cannaiq_api_token" name="cannaiq_api_token"
                                   value="<?php echo esc_attr(get_option('cannaiq_api_token')); ?>"
                                   class="regular-text" />
                            <p class="description">Your authentication token from the CannaIQ admin dashboard. The token includes your store configuration.</p>
                        </td>
                    </tr>
                </table>

                <?php submit_button(); ?>
            </form>

            <hr />

            <h2>Test Connection</h2>
            <button type="button" id="test-api-connection" class="button button-primary">Test API Connection</button>
            <div id="api-test-result" style="margin-top: 10px;"></div>

            <script>
            jQuery(document).ready(function($) {
                $('#test-api-connection').on('click', function() {
                    var apiUrl = '<?php echo CANNAIQ_MENUS_API_URL; ?>';
                    var apiToken = $('#cannaiq_api_token').val();

                    if (!apiToken || apiToken.trim() === '') {
                        $('#api-test-result').html(
                            '<div class="notice notice-warning"><p><strong>Warning:</strong> Please enter an API token first.</p></div>'
                        );
                        return;
                    }

                    $('#api-test-result').html('<p><span class="spinner is-active" style="float:none;margin:0 5px 0 0;"></span>Testing connection...</p>');

                    $.ajax({
                        url: apiUrl + '/menu',
                        method: 'GET',
                        headers: {
                            'X-API-Key': apiToken
                        },
                        timeout: 30000,
                        success: function(response) {
                            var html = '<div class="notice notice-success"><p><strong>Success!</strong> Connected to: ' +
                                response.dispensary + '</p>';
                            if (response.menu) {
                                html += '<ul style="margin-left: 20px;">';
                                html += '<li>Total Products: ' + (response.menu.total_products || 0) + '</li>';
                                html += '<li>In Stock: ' + (response.menu.in_stock_count || 0) + '</li>';
                                html += '<li>Brands: ' + (response.menu.brand_count || 0) + '</li>';
                                html += '<li>Categories: ' + (response.menu.category_count || 0) + '</li>';
                                if (response.menu.last_updated) {
                                    html += '<li>Last Updated: ' + new Date(response.menu.last_updated).toLocaleString() + '</li>';
                                }
                                html += '</ul>';
                            }
                            html += '</div>';
                            $('#api-test-result').html(html);
                        },
                        error: function(xhr, textStatus, errorThrown) {
                            var errorHtml = '<div class="notice notice-error">';
                            errorHtml += '<p><strong>Connection Failed</strong></p>';

                            // Show HTTP status
                            if (xhr.status) {
                                errorHtml += '<p><strong>HTTP Status:</strong> ' + xhr.status + ' ' + (xhr.statusText || '') + '</p>';
                            }

                            // Show error message from API
                            if (xhr.responseJSON) {
                                if (xhr.responseJSON.error) {
                                    errorHtml += '<p><strong>Error:</strong> ' + xhr.responseJSON.error + '</p>';
                                }
                                if (xhr.responseJSON.message) {
                                    errorHtml += '<p><strong>Details:</strong> ' + xhr.responseJSON.message + '</p>';
                                }
                                if (xhr.responseJSON.client_ip) {
                                    errorHtml += '<p><strong>Your IP:</strong> ' + xhr.responseJSON.client_ip + '</p>';
                                }
                                if (xhr.responseJSON.origin) {
                                    errorHtml += '<p><strong>Origin:</strong> ' + xhr.responseJSON.origin + '</p>';
                                }
                            } else if (textStatus === 'timeout') {
                                errorHtml += '<p><strong>Error:</strong> Request timed out. The API server may be unavailable.</p>';
                            } else if (textStatus === 'error' && !xhr.status) {
                                errorHtml += '<p><strong>Error:</strong> Could not connect to the API. This may be a CORS issue or network problem.</p>';
                                errorHtml += '<p><em>Note: If testing from wp-admin, try saving the token and testing on the frontend shortcode instead.</em></p>';
                            } else {
                                errorHtml += '<p><strong>Error:</strong> ' + (errorThrown || textStatus || 'Unknown error') + '</p>';
                            }

                            // Debug info
                            errorHtml += '<details style="margin-top: 10px;"><summary style="cursor:pointer;"><strong>Debug Info</strong></summary>';
                            errorHtml += '<pre style="background:#f5f5f5;padding:10px;margin-top:5px;overflow-x:auto;font-size:11px;">';
                            errorHtml += 'API URL: ' + apiUrl + '/menu\n';
                            errorHtml += 'Token Length: ' + apiToken.length + ' chars\n';
                            errorHtml += 'Token Preview: ' + apiToken.substring(0, 8) + '...' + apiToken.substring(apiToken.length - 4) + '\n';
                            errorHtml += 'Status: ' + xhr.status + '\n';
                            errorHtml += 'Response: ' + (xhr.responseText ? xhr.responseText.substring(0, 500) : 'none') + '\n';
                            errorHtml += '</pre></details>';

                            // Help text based on status
                            if (xhr.status === 401) {
                                errorHtml += '<p style="margin-top:10px;"><strong>Troubleshooting:</strong> Your API token is invalid or inactive. Please check that you copied the full token from the CannaIQ admin dashboard.</p>';
                            } else if (xhr.status === 403) {
                                errorHtml += '<p style="margin-top:10px;"><strong>Troubleshooting:</strong> Access denied. Your IP address or domain may not be in the allowed list. Contact support to update your permissions.</p>';
                            } else if (xhr.status === 500) {
                                errorHtml += '<p style="margin-top:10px;"><strong>Troubleshooting:</strong> Server error. This may be a temporary issue. Try again in a few minutes, or contact support if the problem persists.</p>';
                            } else if (xhr.status === 503) {
                                errorHtml += '<p style="margin-top:10px;"><strong>Troubleshooting:</strong> Menu data is not yet available for your dispensary. The data may still be processing.</p>';
                            }

                            errorHtml += '</div>';
                            $('#api-test-result').html(errorHtml);
                        }
                    });
                });
            });
            </script>

            <hr />

            <h2>Usage</h2>
            <h3>Shortcodes</h3>
            <table class="widefat" style="max-width: 800px;">
                <thead>
                    <tr>
                        <th>Shortcode</th>
                        <th>Description</th>
                    </tr>
                </thead>
                <tbody>
                    <tr>
                        <td><code>[cannaiq_products]</code></td>
                        <td>Display a grid of products. Options: <code>category_id</code>, <code>limit</code>, <code>columns</code>, <code>in_stock</code></td>
                    </tr>
                    <tr>
                        <td><code>[cannaiq_product id="123"]</code></td>
                        <td>Display a single product by ID</td>
                    </tr>
                </tbody>
            </table>

            <h3>Elementor Widgets</h3>
            <p>If you have Elementor installed, you can use the CannaIQ widgets:</p>
            <ul style="list-style: disc; margin-left: 20px;">
                <li><strong>CannaIQ Product Grid</strong> - Display a grid of products with filtering options</li>
                <li><strong>CannaIQ Single Product</strong> - Display a single product card</li>
            </ul>
        </div>
        <?php
    }

    /**
     * Products Shortcode
     */
    public function products_shortcode($atts) {
        $atts = shortcode_atts([
            'category_id' => '',
            'limit' => 12,
            'columns' => 3,
            'in_stock' => 'true'
        ], $atts);

        $products = $this->fetch_products($atts);

        if (!$products) {
            return '<p>No products found.</p>';
        }

        ob_start();
        include CANNAIQ_MENUS_PLUGIN_DIR . 'templates/product-grid.php';
        return ob_get_clean();
    }

    /**
     * Single Product Shortcode
     */
    public function single_product_shortcode($atts) {
        $atts = shortcode_atts([
            'id' => 0
        ], $atts);

        if (!$atts['id']) {
            return '<p>Product ID required.</p>';
        }

        $product = $this->fetch_product($atts['id']);

        if (!$product) {
            return '<p>Product not found.</p>';
        }

        ob_start();
        include CANNAIQ_MENUS_PLUGIN_DIR . 'templates/single-product.php';
        return ob_get_clean();
    }

    /**
     * Fetch Products from API
     */
    public function fetch_products($args = []) {
        $api_token = get_option('cannaiq_api_token');

        if (!$api_token) {
            return false;
        }

        $query_args = http_build_query($args);
        $url = CANNAIQ_MENUS_API_URL . '/products?' . $query_args;

        $response = wp_remote_get($url, [
            'headers' => [
                'X-API-Key' => $api_token
            ],
            'timeout' => 30
        ]);

        if (is_wp_error($response)) {
            return false;
        }

        $body = wp_remote_retrieve_body($response);
        $data = json_decode($body, true);

        return $data['products'] ?? false;
    }

    /**
     * Fetch Single Product from API
     */
    public function fetch_product($id) {
        $api_token = get_option('cannaiq_api_token');

        if (!$api_token) {
            return false;
        }

        $url = CANNAIQ_MENUS_API_URL . '/products/' . intval($id);

        $response = wp_remote_get($url, [
            'headers' => [
                'X-API-Key' => $api_token
            ],
            'timeout' => 30
        ]);

        if (is_wp_error($response)) {
            return false;
        }

        $body = wp_remote_retrieve_body($response);
        $data = json_decode($body, true);

        return $data['product'] ?? false;
    }

    /**
     * Fetch Categories from API
     */
    public function fetch_categories($args = []) {
        $api_token = get_option('cannaiq_api_token');

        if (!$api_token) {
            return false;
        }

        $query_args = http_build_query($args);
        $url = CANNAIQ_MENUS_API_URL . '/categories' . ($query_args ? '?' . $query_args : '');

        $response = wp_remote_get($url, [
            'headers' => [
                'X-API-Key' => $api_token
            ],
            'timeout' => 30
        ]);

        if (is_wp_error($response)) {
            return false;
        }

        $body = wp_remote_retrieve_body($response);
        $data = json_decode($body, true);

        return $data['categories'] ?? false;
    }

    /**
     * Fetch Brands from API
     */
    public function fetch_brands($args = []) {
        $api_token = get_option('cannaiq_api_token');

        if (!$api_token) {
            return false;
        }

        $query_args = http_build_query($args);
        $url = CANNAIQ_MENUS_API_URL . '/brands' . ($query_args ? '?' . $query_args : '');

        $response = wp_remote_get($url, [
            'headers' => [
                'X-API-Key' => $api_token
            ],
            'timeout' => 30
        ]);

        if (is_wp_error($response)) {
            return false;
        }

        $body = wp_remote_retrieve_body($response);
        $data = json_decode($body, true);

        return $data['brands'] ?? false;
    }

    /**
     * Fetch Specials/Deals from API
     */
    public function fetch_specials($args = []) {
        $api_token = get_option('cannaiq_api_token');

        if (!$api_token) {
            return false;
        }

        $query_args = http_build_query($args);
        $url = CANNAIQ_MENUS_API_URL . '/specials' . ($query_args ? '?' . $query_args : '');

        $response = wp_remote_get($url, [
            'headers' => [
                'X-API-Key' => $api_token
            ],
            'timeout' => 30
        ]);

        if (is_wp_error($response)) {
            return false;
        }

        $body = wp_remote_retrieve_body($response);
        $data = json_decode($body, true);

        return $data['products'] ?? false;
    }

    /**
     * Get categories as options for Elementor select control
     * Returns cached results for performance
     */
    public function get_category_options() {
        $cache_key = 'cannaiq_category_options';
        $cached = get_transient($cache_key);

        if ($cached !== false) {
            return $cached;
        }

        $categories = $this->fetch_categories();
        $options = ['' => __('All Categories', 'cannaiq-menus')];

        if ($categories) {
            foreach ($categories as $cat) {
                $name = $cat['type'] ?? $cat['name'] ?? '';
                if ($name) {
                    $options[$name] = ucwords(str_replace('_', ' ', $name));
                }
            }
        }

        set_transient($cache_key, $options, 5 * MINUTE_IN_SECONDS);
        return $options;
    }

    /**
     * Get brands as options for Elementor select control
     * Returns cached results for performance
     */
    public function get_brand_options() {
        $cache_key = 'cannaiq_brand_options';
        $cached = get_transient($cache_key);

        if ($cached !== false) {
            return $cached;
        }

        $brands = $this->fetch_brands(['limit' => 200]);
        $options = ['' => __('All Brands', 'cannaiq-menus')];

        if ($brands) {
            foreach ($brands as $brand) {
                $name = $brand['brand'] ?? $brand['brand_name'] ?? '';
                if ($name) {
                    $options[$name] = $name;
                }
            }
        }

        set_transient($cache_key, $options, 5 * MINUTE_IN_SECONDS);
        return $options;
    }
}

// Initialize Plugin
function cannaiq_menus() {
    return CannaIQ_Menus_Plugin::instance();
}

cannaiq_menus();