<?php
// Exit if accessed directly
if ( ! defined( 'ABSPATH' ) ) {
    exit;
}

/**
 * Comment logging functionality.
 *
 * @package    Activity_Log_Pro
 * @subpackage Activity_Log_Pro/includes
 * @since      1.0.0
 */

/**
 * The comment logging functionality of the plugin.
 *
 * Defines the comment logging methods and hooks
 *
 * @package    Activity_Log_Pro
 * @subpackage Activity_Log_Pro/includes
 * @author     Activity Log Pro
 */
class ACTLOGPRO_Comment_Logger {

    /**
     * Initialize the class and set up event listeners.
     *
     * @since    1.0.0
     */
    public function __construct() {
        // Comment events
        add_action('wp_insert_comment', array($this, 'comment_created'), 10, 2);
        add_action('edit_comment', array($this, 'comment_updated'));
        add_action('transition_comment_status', array($this, 'comment_status_changed'), 10, 3);
        add_action('wp_trash_comment', array($this, 'comment_trashed'));
        add_action('untrash_comment', array($this, 'comment_untrashed'));
        add_action('spam_comment', array($this, 'comment_spammed'));
        add_action('unspam_comment', array($this, 'comment_unspammed'));
        add_action('delete_comment', array($this, 'comment_deleted'));
    }

    /**
     * Check if comment event tracking is enabled.
     *
     * @since    1.0.0
     * @return   boolean True if comment event tracking is enabled, false otherwise.
     */
    private function is_tracking_enabled() {
        return get_option('actlogpro_track_comment_events', '1') === '1';
    }

    /**
     * Check if this is a WooCommerce order note.
     *
     * @since    1.0.0
     * @param    WP_Comment $comment Comment object.
     * @return   boolean True if this is a WooCommerce order note, false otherwise.
     */
    private function is_woocommerce_order_note($comment) {
        // Skip comments with comment_type 'order_note' (WooCommerce uses this)
        if (!empty($comment->comment_type) && $comment->comment_type === 'order_note') {
            return true;
        }
        
        // Skip WooCommerce order notes which are stored as comments
        $post = get_post($comment->comment_post_ID);
        if ($post && ($post->post_type === 'shop_order' || $post->post_type === 'shop_order_placehold')) {
            return true;
        }
        
        return false;
    }

    /**
     * Check if this comment has already been logged recently.
     *
     * @since    1.0.0
     * @param    int    $comment_id Comment ID.
     * @param    string $action    Action being logged.
     * @return   boolean True if this comment has been logged recently, false otherwise.
     */
    private function is_duplicate_log($comment_id, $action) {
        $transient_key = 'actlogpro_comment_log_' . $comment_id . '_' . $action;
        $logged = get_transient($transient_key);
        
        if ($logged) {
            return true;
        }
        
        // Set transient to prevent duplicate logging (expires in 5 seconds)
        set_transient($transient_key, true, 5);
        
        return false;
    }

    /**
     * Log comment creation event.
     *
     * @since    1.0.0
     * @param    int        $comment_id Comment ID.
     * @param    WP_Comment $comment    Comment object.
     */
    public function comment_created($comment_id, $comment) {
        // Check if comment event tracking is enabled
        if (!$this->is_tracking_enabled()) {
            return;
        }
        
        // Check for duplicate logs
        if ($this->is_duplicate_log($comment_id, 'created')) {
            return;
        }
        
        // Skip WooCommerce order notes
        if ($this->is_woocommerce_order_note($comment)) {
            return;
        }
        
        $post = get_post($comment->comment_post_ID);
        
        if (!$post) {
            return;
        }
        
        ACTLOGPRO_Logger::log_activity(
            'comment',
            'comment',
            $comment_id,
            /* translators: %s: Post title */
            sprintf(__('Comment on "%s"', 'activity-log-pro'), $post->post_title),
            'created',
            /* translators: %s: Post title */
            sprintf(__('New comment added to "%s"', 'activity-log-pro'), $post->post_title),
            array(
                'comment_author' => $comment->comment_author,
                'comment_content' => wp_trim_words($comment->comment_content, 20),
                'post_id' => $post->ID,
                'post_title' => $post->post_title,
                'comment_status' => $comment->comment_approved
            )
        );
    }

    /**
     * Log comment update event.
     *
     * @since    1.0.0
     * @param    int $comment_id Comment ID.
     */
    public function comment_updated($comment_id) {
        // Check if comment event tracking is enabled
        if (!$this->is_tracking_enabled()) {
            return;
        }
        
        // Check for duplicate logs
        if ($this->is_duplicate_log($comment_id, 'updated')) {
            return;
        }
        
        $comment = get_comment($comment_id);
        
        // Skip WooCommerce order notes
        if ($this->is_woocommerce_order_note($comment)) {
            return;
        }
        
        $post = get_post($comment->comment_post_ID);
        
        if (!$post) {
            return;
        }
        
        ACTLOGPRO_Logger::log_activity(
            'comment',
            'comment',
            $comment_id,
            /* translators: %s: Post title */
            sprintf(__('Comment on "%s"', 'activity-log-pro'), $post->post_title),
            'updated',
            /* translators: %s: Post title */
            sprintf(__('Comment updated on "%s"', 'activity-log-pro'), $post->post_title),
            array(
                'comment_author' => $comment->comment_author,
                'comment_content' => wp_trim_words($comment->comment_content, 20),
                'post_id' => $post->ID,
                'post_title' => $post->post_title,
                'comment_status' => $comment->comment_approved
            )
        );
    }

    /**
     * Log comment status change event.
     *
     * @since    1.0.0
     * @param    string $new_status New comment status.
     * @param    string $old_status Old comment status.
     * @param    WP_Comment $comment Comment object.
     */
    public function comment_status_changed($new_status, $old_status, $comment) {
        // Check if comment event tracking is enabled
        if (!$this->is_tracking_enabled()) {
            return;
        }
        
        // Skip WooCommerce order notes
        if ($this->is_woocommerce_order_note($comment)) {
            return;
        }
        
        $post = get_post($comment->comment_post_ID);
        
        if (!$post) {
            return;
        }
        
        // Map status to action
        $status_map = array(
            '0' => 'unapproved',
            '1' => 'approved',
            'spam' => 'spammed',
            'trash' => 'trashed'
        );
        
        // Only log if status actually changed
        if ($new_status === $old_status) {
            return;
        }
        
        // Check for duplicate logs
        $action = isset($status_map[$new_status]) ? $status_map[$new_status] : 'status_changed';
        if ($this->is_duplicate_log($comment->comment_ID, $action)) {
            return;
        }
        
        // Get human-readable status names
        $new_status_name = isset($status_map[$new_status]) ? $status_map[$new_status] : $new_status;
        $old_status_name = isset($status_map[$old_status]) ? $status_map[$old_status] : $old_status;
        
        ACTLOGPRO_Logger::log_activity(
            'comment',
            'comment',
            $comment->comment_ID,
            /* translators: %s: Post title */
            sprintf(__('Comment on "%s"', 'activity-log-pro'), $post->post_title),
            $action,
            /* translators: 1: Old status, 2: New status, 3: Post title */
            sprintf(__('Comment status changed from %1$s to %2$s on "%3$s"', 'activity-log-pro'), 
                $old_status_name, 
                $new_status_name, 
                $post->post_title
            ),
            array(
                'comment_author' => $comment->comment_author,
                'comment_content' => wp_trim_words($comment->comment_content, 20),
                'post_id' => $post->ID,
                'post_title' => $post->post_title,
                'old_status' => $old_status,
                'new_status' => $new_status
            )
        );
    }

    /**
     * Log comment trashed event.
     *
     * @since    1.0.0
     * @param    int $comment_id Comment ID.
     */
    public function comment_trashed($comment_id) {
        // Check if comment event tracking is enabled
        if (!$this->is_tracking_enabled()) {
            return;
        }
        
        // Check for duplicate logs
        if ($this->is_duplicate_log($comment_id, 'trashed')) {
            return;
        }
        
        $comment = get_comment($comment_id);
        
        // Skip WooCommerce order notes
        if ($this->is_woocommerce_order_note($comment)) {
            return;
        }
        
        $post = get_post($comment->comment_post_ID);
        
        if (!$post) {
            return;
        }
        
        ACTLOGPRO_Logger::log_activity(
            'comment',
            'comment',
            $comment_id,
            /* translators: %s: Post title */
            sprintf(__('Comment on "%s"', 'activity-log-pro'), $post->post_title),
            'trashed',
            /* translators: %s: Post title */
            sprintf(__('Comment moved to trash on "%s"', 'activity-log-pro'), $post->post_title),
            array(
                'comment_author' => $comment->comment_author,
                'comment_content' => wp_trim_words($comment->comment_content, 20),
                'post_id' => $post->ID,
                'post_title' => $post->post_title
            )
        );
    }

    /**
     * Log comment untrashed event.
     *
     * @since    1.0.0
     * @param    int $comment_id Comment ID.
     */
    public function comment_untrashed($comment_id) {
        // Check if comment event tracking is enabled
        if (!$this->is_tracking_enabled()) {
            return;
        }
        
        // Check for duplicate logs
        if ($this->is_duplicate_log($comment_id, 'untrashed')) {
            return;
        }
        
        $comment = get_comment($comment_id);
        
        // Skip WooCommerce order notes
        if ($this->is_woocommerce_order_note($comment)) {
            return;
        }
        
        $post = get_post($comment->comment_post_ID);
        
        if (!$post) {
            return;
        }
        
        ACTLOGPRO_Logger::log_activity(
            'comment',
            'comment',
            $comment_id,
            /* translators: %s: Post title */
            sprintf(__('Comment on "%s"', 'activity-log-pro'), $post->post_title),
            'untrashed',
            /* translators: %s: Post title */
            sprintf(__('Comment restored from trash on "%s"', 'activity-log-pro'), $post->post_title),
            array(
                'comment_author' => $comment->comment_author,
                'comment_content' => wp_trim_words($comment->comment_content, 20),
                'post_id' => $post->ID,
                'post_title' => $post->post_title
            )
        );
    }

    /**
     * Log comment marked as spam event.
     *
     * @since    1.0.0
     * @param    int $comment_id Comment ID.
     */
    public function comment_spammed($comment_id) {
        // Check if comment event tracking is enabled
        if (!$this->is_tracking_enabled()) {
            return;
        }
        
        // Check for duplicate logs
        if ($this->is_duplicate_log($comment_id, 'spammed')) {
            return;
        }
        
        $comment = get_comment($comment_id);
        
        // Skip WooCommerce order notes
        if ($this->is_woocommerce_order_note($comment)) {
            return;
        }
        
        $post = get_post($comment->comment_post_ID);
        
        if (!$post) {
            return;
        }
        
        ACTLOGPRO_Logger::log_activity(
            'comment',
            'comment',
            $comment_id,
            /* translators: %s: Post title */
            sprintf(__('Comment on "%s"', 'activity-log-pro'), $post->post_title),
            'spammed',
            /* translators: %s: Post title */
            sprintf(__('Comment marked as spam on "%s"', 'activity-log-pro'), $post->post_title),
            array(
                'comment_author' => $comment->comment_author,
                'comment_content' => wp_trim_words($comment->comment_content, 20),
                'post_id' => $post->ID,
                'post_title' => $post->post_title
            )
        );
    }

    /**
     * Log comment unmarked as spam event.
     *
     * @since    1.0.0
     * @param    int $comment_id Comment ID.
     */
    public function comment_unspammed($comment_id) {
        // Check if comment event tracking is enabled
        if (!$this->is_tracking_enabled()) {
            return;
        }
        
        // Check for duplicate logs
        if ($this->is_duplicate_log($comment_id, 'unspammed')) {
            return;
        }
        
        $comment = get_comment($comment_id);
        
        // Skip WooCommerce order notes
        if ($this->is_woocommerce_order_note($comment)) {
            return;
        }
        
        $post = get_post($comment->comment_post_ID);
        
        if (!$post) {
            return;
        }
        
        ACTLOGPRO_Logger::log_activity(
            'comment',
            'comment',
            $comment_id,
            /* translators: %s: Post title */
            sprintf(__('Comment on "%s"', 'activity-log-pro'), $post->post_title),
            'unspammed',
            /* translators: %s: Post title */
            sprintf(__('Comment unmarked as spam on "%s"', 'activity-log-pro'), $post->post_title),
            array(
                'comment_author' => $comment->comment_author,
                'comment_content' => wp_trim_words($comment->comment_content, 20),
                'post_id' => $post->ID,
                'post_title' => $post->post_title
            )
        );
    }

    /**
     * Log comment deletion event.
     *
     * @since    1.0.0
     * @param    int $comment_id Comment ID.
     */
    public function comment_deleted($comment_id) {
        // Check if comment event tracking is enabled
        if (!$this->is_tracking_enabled()) {
            return;
        }
        
        // Check for duplicate logs
        if ($this->is_duplicate_log($comment_id, 'deleted')) {
            return;
        }
        
        $comment = get_comment($comment_id);
        
        // Skip WooCommerce order notes
        if ($this->is_woocommerce_order_note($comment)) {
            return;
        }
        
        $post = get_post($comment->comment_post_ID);
        
        if (!$post) {
            return;
        }
        
        ACTLOGPRO_Logger::log_activity(
            'comment',
            'comment',
            $comment_id,
            /* translators: %s: Post title */
            sprintf(__('Comment on "%s"', 'activity-log-pro'), $post->post_title),
            'deleted',
            /* translators: %s: Post title */
            sprintf(__('Comment permanently deleted from "%s"', 'activity-log-pro'), $post->post_title),
            array(
                'comment_author' => $comment->comment_author,
                'post_id' => $post->ID,
                'post_title' => $post->post_title
            )
        );
    }
}