<?php
/**
 * AEO Bob Lite - Elementor Integration
 * Simple DOM-based integration that mirrors Classic/Block editor scorer flow
 * No Document Controls - just enqueue JS and provide data
 *
 * @package AEO_Bob_Lite
 * @version 1.5.74
 */

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

class AEO_Bob_Lite_Elementor {

    /**
     * Single instance
     */
    private static $instance = null;

    /**
     * Get singleton instance
     */
    public static function get_instance() {
        if (null === self::$instance) {
            self::$instance = new self();
        }
        return self::$instance;
    }

    /**
     * Constructor
     */
    private function __construct() {
        // Wait for Elementor to load before initializing
        add_action('elementor/loaded', array($this, 'on_elementor_loaded'));
    }

    /**
     * Called when Elementor is loaded
     */
    public function on_elementor_loaded() {
        $this->init_hooks();
    }

    /**
     * Initialize hooks
     */
    private function init_hooks() {
        // Enqueue scripts for Elementor editor
        add_action('elementor/editor/after_enqueue_scripts', array($this, 'enqueue_editor_scripts'));
    }

    /**
     * Check if we're in Elementor editor
     */
    private function is_elementor_editor() {
        // phpcs:ignore WordPress.Security.NonceVerification.Recommended -- Read-only check for Elementor editor context
        return isset($_GET['action']) && sanitize_text_field(wp_unslash($_GET['action'])) === 'elementor';
    }

    /**
     * Enqueue editor scripts
     */
    public function enqueue_editor_scripts() {
        if (!$this->is_elementor_editor()) {
            return;
        }

        $script_url = plugins_url('assets/js/elementor-panel.js', dirname(__FILE__));

        // Enqueue our Elementor panel script
        wp_enqueue_script(
            'aeo-bob-lite-elementor-panel',
            $script_url,
            array('jquery', 'elementor-editor'),
            AEO_BOB_LITE_VERSION,
            true
        );

        // Enqueue styles
        wp_enqueue_style(
            'aeo-bob-lite-elementor-panel',
            plugins_url('assets/css/admin.css', dirname(__FILE__)),
            array(),
            AEO_BOB_LITE_VERSION
        );

        // Add inline data AFTER the script is enqueued
        $this->add_inline_editor_data();
    }

    /**
     * Localize editor data - mirrors Classic/Block editor data structure
     *
     * SECURITY NOTE: This is a script localization function (not AJAX handler).
     * It runs during 'elementor/editor/after_enqueue_scripts' hook in admin context.
     * Security is ensured by:
     * 1. Using global $post (no user input) to get post ID
     * 2. Verifying current_user_can('edit_post') before exposing any data
     * 3. Creating a nonce that will be verified when JS makes AJAX calls
     */
    private function add_inline_editor_data() {
        // Get post ID from WordPress global $post object (safe - no user input)
        global $post;
        $post_id = 0;

        if ( $post && isset( $post->ID ) ) {
            $post_id = absint( $post->ID );
        } elseif ( function_exists( 'get_the_ID' ) ) {
            $post_id = absint( get_the_ID() );
        }

        // Exit early if no valid post ID available
        if ( ! $post_id ) {
            return;
        }

        // SECURITY: Capability check - only users who can edit this post get data
        if ( ! current_user_can( 'edit_post', $post_id ) ) {
            return;
        }

        // Get current scores (same as Classic/Block editor)
        $seo_score = get_post_meta($post_id, '_aeo_bob_seo_score', true);
        $aeo_score = get_post_meta($post_id, '_aeo_bob_aeo_score', true);

        // Check if API key is configured
        $api_key = get_option('aeo_bob_lite_openai_key', '');
        $has_api_key = !empty($api_key);

        // Build optimize URL - opens the edit screen with anchor to optimization panel
        $optimize_url = admin_url('post.php?post=' . $post_id . '&action=edit#aeo-bob-lite-optimizer');

        // Prepare data for JavaScript using wp_localize_script
        wp_localize_script(
            'aeo-bob-lite-elementor-panel',
            'aeoBobLiteElementorData',
            array(
                'postId'                 => $post_id,
                'ajaxUrl'                => admin_url( 'admin-ajax.php' ),
                'nonce'                  => wp_create_nonce( 'aeo_bob_lite_nonce' ),
                'seoScore'               => $seo_score ? intval( $seo_score ) : 0,
                'aeoScore'               => $aeo_score ? intval( $aeo_score ) : 0,
                'hasApiKey'              => $has_api_key,
                'optimizeUrl'            => $optimize_url,
                'version'                => AEO_BOB_LITE_VERSION,
                'logoUrl'                => AEO_BOB_LITE_URL . 'assets/images/aeoboblogo.png',
                'i18n'                   => array(
                    // Button texts
                    'optimizeContent'          => __( 'OPTIMIZE CONTENT', 'aeo-bob-lite' ),
                    'reAnalyze'                => __( 'RE-ANALYZE', 'aeo-bob-lite' ),
                    'analyzeContent'           => __( 'ANALYZE CONTENT', 'aeo-bob-lite' ),
                    'analyzing'                => __( 'Analyzing...', 'aeo-bob-lite' ),
                    'generating'               => __( 'Generating...', 'aeo-bob-lite' ),
                    'applying'                 => __( 'Applying...', 'aeo-bob-lite' ),
                    'copyPasteManually'        => __( 'Copy/paste these suggestions manually into your content', 'aeo-bob-lite' ),
                    // API key messages
                    'addApiKeyInSettings'      => __( 'Add API key in settings', 'aeo-bob-lite' ),
                    'noApiKeyConfigured'       => __( 'No API key configured', 'aeo-bob-lite' ),
                    'connected'                => __( 'Connected', 'aeo-bob-lite' ),
                    'openaiConnection'         => __( 'OpenAI Connection', 'aeo-bob-lite' ),
                    // Status messages
                    'analysisComplete'         => __( 'Analysis Complete!', 'aeo-bob-lite' ),
                    'clickOptimizeToContinue'  => __( 'Click "Optimize" to continue', 'aeo-bob-lite' ),
                    'analysisFailed'           => __( 'Analysis failed', 'aeo-bob-lite' ),
                    'networkError'             => __( 'Network error. Please try again.', 'aeo-bob-lite' ),
                    'suggestionsGenerated'     => __( 'Suggestions generated!', 'aeo-bob-lite' ),
                    'failedToGenerateSuggestions' => __( 'Failed to generate suggestions', 'aeo-bob-lite' ),
                    'voiceAnalyzedSuccess'     => __( 'Voice analyzed successfully!', 'aeo-bob-lite' ),
                    'analyzingYourWritingStyle' => __( 'Analyzing your writing style...', 'aeo-bob-lite' ),
                    'generatingAiSuggestions'  => __( 'Generating AI suggestions...', 'aeo-bob-lite' ),
                    // Panel titles
                    'contentOptimizer'         => __( 'Content Optimizer', 'aeo-bob-lite' ),
                    'close'                    => __( 'Close', 'aeo-bob-lite' ),
                    'currentScores'            => __( 'Current Scores', 'aeo-bob-lite' ),
                    'seoScore'                 => __( 'SEO Score', 'aeo-bob-lite' ),
                    'aeoScore'                 => __( 'AEO Score', 'aeo-bob-lite' ),
                    'seo'                      => __( 'SEO', 'aeo-bob-lite' ),
                    'aeo'                      => __( 'AEO', 'aeo-bob-lite' ),
                    // Step labels
                    'step1AnalyzeVoice'        => __( 'Step 1: Analyze Author Voice', 'aeo-bob-lite' ),
                    'step2GetSuggestions'      => __( 'Step 2: Get AI Suggestions', 'aeo-bob-lite' ),
                    'analyzeVoice'             => __( 'Analyze Voice', 'aeo-bob-lite' ),
                    'reAnalyzeVoice'           => __( 'Re-analyze Voice', 'aeo-bob-lite' ),
                    'getAiSuggestions'         => __( 'Get AI Suggestions', 'aeo-bob-lite' ),
                    'getNewSuggestions'        => __( 'Get New Suggestions', 'aeo-bob-lite' ),
                    // Voice profile
                    'style'                    => __( 'Style', 'aeo-bob-lite' ),
                    'tone'                     => __( 'Tone', 'aeo-bob-lite' ),
                    'readingLevel'             => __( 'Reading Level', 'aeo-bob-lite' ),
                    // Suggestions
                    'contentImprovements'      => __( 'Content Improvements', 'aeo-bob-lite' ),
                    'faqSuggestions'           => __( 'FAQ Suggestions', 'aeo-bob-lite' ),
                    'applySelectedSuggestions' => __( 'Apply Selected Suggestions', 'aeo-bob-lite' ),
                    'selectAtLeastOne'         => __( 'Please select at least one suggestion to apply.', 'aeo-bob-lite' ),
                    /* translators: %d: number of suggestions to apply */
                    'confirmApply'             => __( 'Apply %d suggestion(s) to your content?', 'aeo-bob-lite' ),
                    'confirmApplyNote'         => __( 'Note: This will modify your Elementor content.', 'aeo-bob-lite' ),
                    // Apply results
                    'suggestionsApplied'       => __( 'Suggestions applied!', 'aeo-bob-lite' ),
                    /* translators: %s: number of new sections added */
                    'reloadingElementor'       => __( 'Reloading Elementor to show %s new sections...', 'aeo-bob-lite' ),
                    'failedToUpdateElementor'  => __( 'Failed to update Elementor content.', 'aeo-bob-lite' ),
                    'backendNotConfirmed'      => __( 'The backend did not confirm the Elementor document was updated.', 'aeo-bob-lite' ),
                    'unknownError'             => __( 'Unknown error', 'aeo-bob-lite' ),
                    'failedToApplySuggestions' => __( 'Failed to apply suggestions:', 'aeo-bob-lite' ),
                    'networkErrorApplying'     => __( 'Network error while applying suggestions. Please try again.', 'aeo-bob-lite' ),
                ),
            )
        );
    }
}