<?php

/**
 * Plugin Name: AccessiMate
 * Description: A comprehensive WordPress accessibility plugin that provides tools to make your website more accessible to users with disabilities.
 * Version: 1.0.3
 * Author: BDPlugins
 * License: GPL v2 or later
 * Text Domain: accessimate
 */
// Prevent direct access
if ( !defined( 'ABSPATH' ) ) {
    exit;
}
// Define plugin constants
define( 'ACCESSIMATE_VERSION', '1.0.3' );
define( 'ACCESSIMATE_PLUGIN_DIR', plugin_dir_path( __FILE__ ) );
define( 'ACCESSIMATE_PLUGIN_URL', plugin_dir_url( __FILE__ ) );
define( 'ACCESSIMATE_AI_ENABLED', true );
if ( function_exists( 'bdpacc_fs' ) ) {
    bdpacc_fs()->set_basename( false, __FILE__ );
} else {
    /**
     * DO NOT REMOVE THIS IF, IT IS ESSENTIAL FOR THE
     * `function_exists` CALL ABOVE TO PROPERLY WORK.
     */
    if ( !function_exists( 'bdpacc_fs' ) ) {
        // Create a helper function for easy SDK access.
        function bdpacc_fs() {
            global $bdpacc_fs;
            if ( !isset( $bdpacc_fs ) ) {
                // Include Freemius SDK.
                require_once dirname( __FILE__ ) . '/vendor/freemius/start.php';
                $bdpacc_fs = fs_dynamic_init( [
                    'id'               => '20125',
                    'slug'             => 'accessimate',
                    'type'             => 'plugin',
                    'public_key'       => 'pk_2070f9a53475a07dc6e32a706509a',
                    'is_premium'       => false,
                    'premium_suffix'   => 'Pro',
                    'has_addons'       => false,
                    'has_paid_plans'   => true,
                    'is_org_compliant' => true,
                    'trial'            => [
                        'days'               => 3,
                        'is_require_payment' => true,
                    ],
                    'menu'             => [
                        'slug'       => 'accessimate',
                        'first-path' => 'options-general.php?page=accessimate',
                        'support'    => false,
                        'parent'     => [
                            'slug' => 'options-general.php',
                        ],
                    ],
                    'is_live'          => true,
                ] );
            }
            return $bdpacc_fs;
        }

        // Init Freemius.
        bdpacc_fs();
        // Signal that SDK was initiated.
        do_action( 'bdpacc_fs_loaded' );
        // Initialize the plugin
        new AccessiMate();
    }
    // ... Your plugin's main file logic ...
}
class AccessiMate {
    /**
     * Constructor
     */
    public function __construct() {
        add_action( 'init', [$this, 'init'] );
        register_activation_hook( __FILE__, [$this, 'activate'] );
        register_deactivation_hook( __FILE__, [$this, 'deactivate'] );
    }

    /**
     * Initialize the plugin
     */
    public function init() {
        // Admin hooks
        if ( is_admin() ) {
            add_action( 'admin_menu', [$this, 'add_admin_menu'] );
            add_action( 'admin_init', [$this, 'admin_init'] );
            add_action( 'admin_enqueue_scripts', [$this, 'enqueue_admin_scripts'] );
        }
        // Frontend hooks
        add_action( 'wp_enqueue_scripts', [$this, 'enqueue_frontend_scripts'] );
        add_action( 'wp_footer', [$this, 'render_accessibility_toolbar'] );
        // AJAX hooks
        add_action( 'wp_ajax_accessimate_save_settings', [$this, 'save_user_preferences'] );
        add_action( 'wp_ajax_nopriv_accessimate_save_settings', [$this, 'save_user_preferences'] );
        add_action( 'wp_ajax_accessimate_generate_alt_text', [$this, 'generate_alt_text'] );
        add_action( 'wp_ajax_accessimate_scan_content', [$this, 'scan_content_accessibility'] );
        add_action( 'wp_ajax_accessimate_simplify_text', [$this, 'simplify_text'] );
        // AI Features
        // if (ACCESSIMATE_AI_ENABLED) {
        //     add_action('wp_enqueue_scripts', [ $this, 'enqueue_ai_scripts' ]);
        //     add_filter('wp_get_attachment_image_attributes', [ $this, 'auto_generate_alt_text' ], 10, 3);
        // }
    }

    /**
     * Plugin activation
     */
    public function activate() {
        // Set default options
        $default_options = [
            'enable_toolbar'    => 1,
            'enable_skip_links' => 1,
            'keyboard'          => 1,
            'line-height'       => 1,
            'letter-spacing'    => 1,
            'readable-font'     => 1,
            'dyslexic-font'     => 1,
            'text-align'        => 1,
            'highlight-links'   => 1,
            'invert-colors'     => 1,
            'brightness'        => 1,
            'contrast'          => 1,
            'gray-scale'        => 1,
            'saturation'        => 1,
            'reading-line'      => 1,
            'reading-mask'      => 1,
            'highlight-all'     => 1,
            'highlight-titles'  => 1,
            'hide-images'       => 1,
            'text-to-speech'    => 1,
            'mute-sounds'       => 1,
            'stop-animations'   => 1,
            'toolbar_position'  => 'bottom-left',
            'toolbar_animation' => 'slide-left',
            'toolbar_theme'     => 'auto',
            'bigger-text'       => 1,
            'cursor'            => 1,
        ];
        add_option( 'accessimate_options', $default_options );
        // Create custom table for user preferences if needed
        $this->create_user_preferences_table();
    }

    /**
     * Plugin deactivation
     */
    public function deactivate() {
        // Clean up if needed (keeping options for now)
    }

    /**
     * Create user preferences table
     */
    private function create_user_preferences_table() {
        global $wpdb;
        $table_name = "{$wpdb->prefix}accessimate_user_prefs";
        $charset_collate = $wpdb->get_charset_collate();
        $sql = "CREATE TABLE {$table_name} (\n            id mediumint(9) NOT NULL AUTO_INCREMENT,\n            user_session varchar(100) NOT NULL,\n            preferences text NOT NULL,\n            created_at datetime DEFAULT CURRENT_TIMESTAMP,\n            PRIMARY KEY (id),\n            UNIQUE KEY user_session (user_session)\n        ) {$charset_collate};";
        require_once ABSPATH . 'wp-admin/includes/upgrade.php';
        dbDelta( $sql );
        // Create AI suggestions table
        $ai_table = "{$wpdb->prefix}accessimate_ai_suggestions";
        $sql_ai = "CREATE TABLE {$ai_table} (\n            id mediumint(9) NOT NULL AUTO_INCREMENT,\n            post_id mediumint(9) NOT NULL,\n            suggestion_type varchar(50) NOT NULL,\n            original_content text NOT NULL,\n            suggested_content text NOT NULL,\n            status varchar(20) DEFAULT 'pending',\n            created_at datetime DEFAULT CURRENT_TIMESTAMP,\n            PRIMARY KEY (id),\n            KEY post_id (post_id)\n        ) {$charset_collate};";
        dbDelta( $sql_ai );
    }

    /**
     * Add admin menu
     */
    public function add_admin_menu() {
        add_options_page(
            __( 'AccessiMate Settings', 'accessimate' ),
            __( 'AccessiMate', 'accessimate' ),
            'manage_options',
            'accessimate',
            [$this, 'admin_page']
        );
    }

    /**
     * Initialize admin settings
     */
    public function admin_init() {
        register_setting( 'accessimate_options', 'accessimate_options', [$this, 'validate_options'] );
        add_settings_section(
            'accessimate_main',
            __( 'Main Settings', 'accessimate' ),
            [$this, 'main_section_callback'],
            'accessimate'
        );
        $settings = [
            // Toolbar Settings
            [
                'id'          => 'enable_toolbar',
                'label'       => __( 'Accessibility Toolbar', 'accessimate' ),
                'callback'    => [$this, 'checkbox_field'],
                'description' => 'Display the accessibility toolbar on the frontend.',
            ],
            [
                'id'       => 'toolbar_position',
                'label'    => __( 'Toolbar Position', 'accessimate' ),
                'callback' => [$this, 'select_field'],
                'options'  => [
                    'top-left'     => __( 'Top Left', 'accessimate' ),
                    'top-right'    => __( 'Top Right', 'accessimate' ),
                    'bottom-left'  => __( 'Bottom Left', 'accessimate' ),
                    'bottom-right' => __( 'Bottom Right', 'accessimate' ),
                ],
            ],
            [
                'id'       => 'toolbar_animation',
                'label'    => __( 'Toolbar Animation', 'accessimate' ),
                'callback' => [$this, 'select_field'],
                'options'  => [
                    'none'         => __( 'None', 'accessimate' ),
                    'fade'         => __( 'Fade', 'accessimate' ),
                    'slide-left'   => __( 'Slide Left', 'accessimate' ),
                    'slide-right'  => __( 'Slide Right', 'accessimate' ),
                    'slide-top'    => __( 'Slide Top', 'accessimate' ),
                    'slide-bottom' => __( 'Slide Bottom', 'accessimate' ),
                ],
            ],
            [
                'id'       => 'toolbar_theme',
                'label'    => __( 'Toolbar Theme', 'accessimate' ),
                'callback' => [$this, 'select_field'],
                'options'  => [
                    'auto'  => __( 'Auto (System Preference)', 'accessimate' ),
                    'light' => __( 'Light', 'accessimate' ),
                    'dark'  => __( 'Dark', 'accessimate' ),
                ],
            ],
            // Feature Toggles
            [
                'id'          => 'bigger-text',
                'label'       => __( 'Bigger Text', 'accessimate' ),
                'callback'    => [$this, 'checkbox_field'],
                'description' => 'Increase text size for better readability.',
            ],
            [
                'id'          => 'cursor',
                'label'       => __( 'Cursor', 'accessimate' ),
                'callback'    => [$this, 'checkbox_field'],
                'description' => 'Improve cursor visibility for users with visual challenges.',
            ],
            [
                'id'          => 'line-height',
                'label'       => __( 'Line Height', 'accessimate' ),
                'callback'    => [$this, 'checkbox_field'],
                'description' => 'Adjust line spacing to reduce text clutter.',
            ],
            [
                'id'          => 'letter-spacing',
                'label'       => __( 'Letter Spacing', 'accessimate' ),
                'callback'    => [$this, 'checkbox_field'],
                'description' => 'Increase spacing between letters for clarity.',
            ],
            [
                'id'          => 'readable-font',
                'label'       => __( 'Readable Font', 'accessimate' ),
                'callback'    => [$this, 'checkbox_field'],
                'description' => 'Use a clean, legible font for easier reading.',
            ],
            [
                'id'          => 'dyslexic-font',
                'label'       => __( 'Dyslexic Font', 'accessimate' ),
                'callback'    => [$this, 'checkbox_field'],
                'description' => 'Enable a font designed to aid dyslexic users.',
                'is_beta'     => true,
            ],
            [
                'id'          => 'text-align',
                'label'       => __( 'Text Align', 'accessimate' ),
                'callback'    => [$this, 'checkbox_field'],
                'description' => 'Adjust text alignment for better legibility.',
            ],
            [
                'id'          => 'text-magnifier',
                'label'       => __( 'Text Magnifier', 'accessimate' ),
                'callback'    => [$this, 'checkbox_field'],
                'description' => 'Magnify text on hover or focus for better visibility.',
                'is_beta'     => true,
            ],
            [
                'id'          => 'highlight-links',
                'label'       => __( 'Highlight Links', 'accessimate' ),
                'callback'    => [$this, 'checkbox_field'],
                'description' => 'Highlight all links on the page for visibility.',
            ],
            [
                'id'          => 'invert-colors',
                'label'       => __( 'Invert Colors', 'accessimate' ),
                'callback'    => [$this, 'checkbox_field'],
                'description' => 'Invert website colors to reduce eye strain.',
            ],
            [
                'id'          => 'brightness',
                'label'       => __( 'Brightness', 'accessimate' ),
                'callback'    => [$this, 'checkbox_field'],
                'description' => 'Adjust screen brightness for comfort.',
            ],
            [
                'id'          => 'contrast',
                'label'       => __( 'Contrast', 'accessimate' ),
                'callback'    => [$this, 'checkbox_field'],
                'description' => 'Improve content visibility with contrast adjustment.',
                'is_beta'     => true,
            ],
            [
                'id'          => 'gray-scale',
                'label'       => __( 'Gray Scale', 'accessimate' ),
                'callback'    => [$this, 'checkbox_field'],
                'description' => 'Convert content to grayscale for focus.',
            ],
            [
                'id'          => 'saturation',
                'label'       => __( 'Saturation', 'accessimate' ),
                'callback'    => [$this, 'checkbox_field'],
                'description' => 'Adjust saturation to reduce visual overload.',
                'is_beta'     => true,
            ],
            [
                'id'          => 'reading-line',
                'label'       => __( 'Reading Line', 'accessimate' ),
                'callback'    => [$this, 'checkbox_field'],
                'description' => 'Display a horizontal line to follow text.',
            ],
            [
                'id'          => 'reading-mask',
                'label'       => __( 'Reading Mask', 'accessimate' ),
                'callback'    => [$this, 'checkbox_field'],
                'description' => 'Dim parts of the screen to focus on text.',
            ],
            [
                'id'          => 'highlight-all',
                'label'       => __( 'Highlight All', 'accessimate' ),
                'callback'    => [$this, 'checkbox_field'],
                'description' => 'Highlight all content to assist with visual tracking.',
            ],
            [
                'id'          => 'highlight-titles',
                'label'       => __( 'Highlight Titles', 'accessimate' ),
                'callback'    => [$this, 'checkbox_field'],
                'description' => 'Emphasize headings and titles for better navigation.',
                'is_beta'     => true,
            ],
            [
                'id'          => 'hide-images',
                'label'       => __( 'Hide Images', 'accessimate' ),
                'callback'    => [$this, 'checkbox_field'],
                'description' => 'Hide images to reduce distractions.',
            ],
            [
                'id'          => 'text-to-speech',
                'label'       => __( 'Text to Speech', 'accessimate' ),
                'callback'    => [$this, 'checkbox_field'],
                'description' => 'Read out text for users with visual impairments.',
                'is_beta'     => true,
            ],
            [
                'id'          => 'mute-sounds',
                'label'       => __( 'Mute Sounds', 'accessimate' ),
                'callback'    => [$this, 'checkbox_field'],
                'description' => 'Silence all site audio for a quieter experience.',
                'is_beta'     => true,
            ],
            [
                'id'          => 'stop-animations',
                'label'       => __( 'Stop Animations', 'accessimate' ),
                'callback'    => [$this, 'checkbox_field'],
                'description' => 'Stop moving elements to prevent distractions.',
            ],
            [
                'id'          => 'keyboard',
                'label'       => __( 'Keyboard Navigation', 'accessimate' ),
                'callback'    => [$this, 'checkbox_field'],
                'description' => 'Highlight elements during keyboard navigation.',
                'is_beta'     => true,
            ],
        ];
        // Register all fields
        foreach ( $settings as $setting ) {
            $args = [
                'field' => $setting['id'],
            ];
            if ( isset( $setting['description'] ) ) {
                $args['description'] = $setting['description'];
            }
            if ( isset( $setting['options'] ) ) {
                $args['options'] = $setting['options'];
            }
            if ( isset( $setting['is_beta'] ) ) {
                $args['is_beta'] = $setting['is_beta'];
            }
            add_settings_field(
                $setting['id'],
                $setting['label'],
                $setting['callback'],
                'accessimate',
                'accessimate_main',
                $args
            );
        }
    }

    /**
     * Main settings section callback
     */
    public function main_section_callback() {
        echo '<p>' . esc_html__( 'Configure AccessiMate settings to improve your website accessibility.', 'accessimate' ) . '</p>';
    }

    /**
     * Render checkbox field
     *
     * @param array $args Field arguments.
     */
    public function checkbox_field( $args ) {
        $options = get_option( 'accessimate_options' );
        $field = $args['field'];
        $checked = ( isset( $options[$field] ) ? checked( $options[$field], 1, false ) : '' );
        $description = ( isset( $args['description'] ) ? $args['description'] : '' );
        $is_beta = ( isset( $args['is_beta'] ) ? $args['is_beta'] : false );
        echo '<label>';
        echo '<input type="checkbox" name="accessimate_options[' . esc_attr( $field ) . ']" value="1" ' . wp_kses_post( $checked ) . ' /> ';
        echo esc_html( $description );
        if ( $is_beta ) {
            echo '<span class="accessimate-beta-feature">' . esc_html__( 'Beta', 'accessimate' ) . '</span>';
        }
        echo '</label>';
    }

    /**
     * Render select field
     *
     * @param array $args Field arguments.
     */
    public function select_field( $args ) {
        $options = get_option( 'accessimate_options' );
        $field = $args['field'];
        $current = $options[$field] ?? '';
        echo '<select name="accessimate_options[' . esc_attr( $field ) . ']">';
        foreach ( $args['options'] as $value => $label ) {
            $selected = selected( $current, $value, false );
            echo '<option value="' . esc_attr( $value ) . '" ' . wp_kses_post( $selected ) . '>' . esc_html( $label ) . '</option>';
        }
        echo '</select>';
    }

    /**
     * Render text field
     *
     * @param array $args Field arguments.
     */
    public function text_field( $args ) {
        $options = get_option( 'accessimate_options' );
        $field = $args['field'];
        $value = ( isset( $options[$field] ) ? esc_attr( $options[$field] ) : '' );
        $type = ( isset( $args['type'] ) ? $args['type'] : 'text' );
        $description = ( isset( $args['description'] ) ? $args['description'] : '' );
        echo '<input type="' . esc_attr( $type ) . '" name="accessimate_options[' . esc_attr( $field ) . ']" value="' . esc_attr( $value ) . '" class="regular-text" />';
        if ( $description ) {
            echo '<p class="description">' . esc_html( $description ) . '</p>';
        }
    }

    public function validate_options( $input ) {
        $valid = [];
        // Main settings validation
        $valid['enable_toolbar'] = ( isset( $input['enable_toolbar'] ) ? 1 : 0 );
        $valid['enable_skip_links'] = ( isset( $input['enable_skip_links'] ) ? 1 : 0 );
        $valid['bigger-text'] = ( isset( $input['bigger-text'] ) ? 1 : 0 );
        $valid['cursor'] = ( isset( $input['cursor'] ) ? 1 : 0 );
        $valid['line-height'] = ( isset( $input['line-height'] ) ? 1 : 0 );
        $valid['letter-spacing'] = ( isset( $input['letter-spacing'] ) ? 1 : 0 );
        $valid['readable-font'] = ( isset( $input['readable-font'] ) ? 1 : 0 );
        $valid['dyslexic-font'] = ( isset( $input['dyslexic-font'] ) ? 1 : 0 );
        $valid['text-align'] = ( isset( $input['text-align'] ) ? 1 : 0 );
        $valid['text-magnifier'] = ( isset( $input['text-magnifier'] ) ? 1 : 0 );
        $valid['highlight-links'] = ( isset( $input['highlight-links'] ) ? 1 : 0 );
        $valid['invert-colors'] = ( isset( $input['invert-colors'] ) ? 1 : 0 );
        $valid['brightness'] = ( isset( $input['brightness'] ) ? 1 : 0 );
        $valid['contrast'] = ( isset( $input['contrast'] ) ? 1 : 0 );
        $valid['gray-scale'] = ( isset( $input['gray-scale'] ) ? 1 : 0 );
        $valid['saturation'] = ( isset( $input['saturation'] ) ? 1 : 0 );
        $valid['reading-line'] = ( isset( $input['reading-line'] ) ? 1 : 0 );
        $valid['reading-mask'] = ( isset( $input['reading-mask'] ) ? 1 : 0 );
        $valid['highlight-all'] = ( isset( $input['highlight-all'] ) ? 1 : 0 );
        $valid['highlight-titles'] = ( isset( $input['highlight-titles'] ) ? 1 : 0 );
        $valid['hide-images'] = ( isset( $input['hide-images'] ) ? 1 : 0 );
        $valid['text-to-speech'] = ( isset( $input['text-to-speech'] ) ? 1 : 0 );
        $valid['mute-sounds'] = ( isset( $input['mute-sounds'] ) ? 1 : 0 );
        $valid['stop-animations'] = ( isset( $input['stop-animations'] ) ? 1 : 0 );
        $valid['keyboard'] = ( isset( $input['keyboard'] ) ? 1 : 0 );
        // Validate toolbar position
        $valid_positions = [
            'top-left',
            'top-right',
            'bottom-left',
            'bottom-right'
        ];
        $valid['toolbar_position'] = ( in_array( $input['toolbar_position'], $valid_positions, true ) ? sanitize_text_field( $input['toolbar_position'] ) : 'top-right' );
        // Validate toolbar theme
        $valid_themes = ['auto', 'light', 'dark'];
        $valid['toolbar_theme'] = ( in_array( $input['toolbar_theme'], $valid_themes, true ) ? sanitize_text_field( $input['toolbar_theme'] ) : 'auto' );
        // Validate toolbar animation
        $valid_animations = [
            'none',
            'fade',
            'slide-left',
            'slide-right',
            'slide-top',
            'slide-bottom'
        ];
        $valid['toolbar_animation'] = ( in_array( $input['toolbar_animation'], $valid_animations, true ) ? sanitize_text_field( $input['toolbar_animation'] ) : 'slide-top' );
        return $valid;
    }

    /**
     * Display admin page
     */
    public function admin_page() {
        // Check user capabilities
        if ( !current_user_can( 'manage_options' ) ) {
            return;
        }
        ?>
        <div class="wrap">
            <h1><?php 
        esc_html_e( 'AccessiMate Settings', 'accessimate' );
        ?></h1>
            
            <div class="accessimate-admin-header">
                <p><?php 
        esc_html_e( 'Make your WordPress website more accessible with AccessiMate. Configure the settings below to enable various accessibility features.', 'accessimate' );
        ?></p>
            </div>
            
            <form method="post" action="options.php">
                <?php 
        settings_fields( 'accessimate_options' );
        do_settings_sections( 'accessimate' );
        submit_button();
        ?>
            </form>

            <div class="accessimate-admin-info">
                <h3><?php 
        esc_html_e( 'Accessibility Guidelines', 'accessimate' );
        ?></h3>
                <p class="desc"><?php 
        esc_html_e( 'Follow these best practices to improve the accessibility of your website for all users, including those with disabilities.', 'accessimate' );
        ?></p>
                
                <ul>
                    <li>
                        <strong><?php 
        esc_html_e( 'Use Descriptive Alt Text:', 'accessimate' );
        ?></strong>
                        <?php 
        esc_html_e( 'All images should have meaningful alternative (alt) text to convey the purpose of the image to screen readers.', 'accessimate' );
        ?>
                    </li>
                    <li>
                        <strong><?php 
        esc_html_e( 'Follow Heading Hierarchy:', 'accessimate' );
        ?></strong>
                        <?php 
        esc_html_e( 'Use proper HTML heading structure (e.g., H1 for main titles, H2 for sections, H3 for sub-sections) to organize content clearly.', 'accessimate' );
        ?>
                    </li>
                    <li>
                        <strong><?php 
        esc_html_e( 'Ensure Sufficient Color Contrast:', 'accessimate' );
        ?></strong>
                        <?php 
        esc_html_e( 'Text and interactive elements should have a high contrast ratio against their backgrounds for readability.', 'accessimate' );
        ?>
                    </li>
                    <li>
                        <strong><?php 
        esc_html_e( 'Enable Keyboard Navigation:', 'accessimate' );
        ?></strong>
                        <?php 
        esc_html_e( 'All functionality should be usable with a keyboard alone, without requiring a mouse.', 'accessimate' );
        ?>
                    </li>
                    <li>
                        <strong><?php 
        esc_html_e( 'Use Descriptive Link Text:', 'accessimate' );
        ?></strong>
                        <?php 
        esc_html_e( 'Avoid generic phrases like "click here" — use link text that describes the target (e.g., "Download Accessibility Guide").', 'accessimate' );
        ?>
                    </li>
                    <li>
                        <strong><?php 
        esc_html_e( 'Provide Captions & Transcripts:', 'accessimate' );
        ?></strong>
                        <?php 
        esc_html_e( 'Videos should have captions, and audio content should include transcripts to support users with hearing impairments.', 'accessimate' );
        ?>
                    </li>
                    <li>
                        <strong><?php 
        esc_html_e( 'Don’t Rely on Color Alone:', 'accessimate' );
        ?></strong>
                        <?php 
        esc_html_e( 'Use patterns, labels, or icons in addition to color to convey information (e.g., for charts or status indicators).', 'accessimate' );
        ?>
                    </li>
                    <li>
                        <strong><?php 
        esc_html_e( 'Label All Form Inputs:', 'accessimate' );
        ?></strong>
                        <?php 
        esc_html_e( 'Forms must have clear, programmatically associated labels for all input fields.', 'accessimate' );
        ?>
                    </li>
                    <li>
                        <strong><?php 
        esc_html_e( 'Make Focus States Visible:', 'accessimate' );
        ?></strong>
                        <?php 
        esc_html_e( 'Users navigating with a keyboard should see clear focus outlines on buttons, links, and form elements.', 'accessimate' );
        ?>
                    </li>
                    <li>
                        <strong><?php 
        esc_html_e( 'Avoid Unexpected Content Changes:', 'accessimate' );
        ?></strong>
                        <?php 
        esc_html_e( 'Content that changes automatically (like sliders or popups) should be controllable and not disrupt user interaction.', 'accessimate' );
        ?>
                    </li>
                </ul>
            </div>

        </div>
        <?php 
    }

    /**
     * Enqueue admin scripts and styles
     *
     * @param string $hook The current admin page.
     */
    public function enqueue_admin_scripts( $hook ) {
        // Only load on AccessiMate settings page
        if ( 'settings_page_accessimate' !== $hook ) {
            return;
        }
        wp_enqueue_style(
            'accessimate-admin',
            ACCESSIMATE_PLUGIN_URL . 'assets/css/accessimate-admin.css',
            [],
            ACCESSIMATE_VERSION
        );
        wp_enqueue_style(
            'accessimate-fonts',
            ACCESSIMATE_PLUGIN_URL . 'assets/fonts/fonts.css',
            [],
            ACCESSIMATE_VERSION
        );
    }

    /**
     * Enqueue frontend scripts and styles
     */
    public function enqueue_frontend_scripts() {
        $options = get_option( 'accessimate_options' );
        if ( !isset( $options['enable_toolbar'] ) || !$options['enable_toolbar'] ) {
            return;
        }
        wp_enqueue_script(
            'accessimate-frontend',
            ACCESSIMATE_PLUGIN_URL . 'assets/js/accessimate-frontend.js',
            ['jquery'],
            ACCESSIMATE_VERSION,
            true
        );
        // Enqueue Fonts
        wp_enqueue_style(
            'accessimate-fonts',
            ACCESSIMATE_PLUGIN_URL . 'assets/fonts/fonts.css',
            [],
            ACCESSIMATE_VERSION
        );
        wp_enqueue_style(
            'accessimate-frontend',
            ACCESSIMATE_PLUGIN_URL . 'assets/css/accessimate-frontend.css',
            [],
            ACCESSIMATE_VERSION
        );
        // Localize script for AJAX
        wp_localize_script( 'accessimate-frontend', 'accessimate_ajax', [
            'ajax_url'    => admin_url( 'admin-ajax.php' ),
            'nonce'       => wp_create_nonce( 'accessimate_nonce' ),
            'ai_features' => [
                'text_to_speech'      => $options['ai_text_to_speech'] ?? 0,
                'text_simplification' => $options['ai_text_simplification'] ?? 0,
                'content_scan'        => $options['ai_content_scan'] ?? 0,
                'reading_assistance'  => $options['reading_assistance'] ?? 0,
            ],
        ] );
    }

    /**
     * Get all buttons or a specific button by key
     *
     * @param string|null $key Button ID to retrieve
     *
     * @return array|null Button data or null if key is not found
     */
    private function getFeatures( $key = null ) {
        $features = [
            [
                'id'       => 'bigger-text',
                'icon'     => 'format_size',
                'label'    => 'Bigger Text',
                'default'  => true,
                'has_step' => true,
            ],
            [
                'id'       => 'cursor',
                'icon'     => 'arrow_selector_tool',
                'label'    => 'Cursor',
                'default'  => true,
                'has_step' => true,
            ],
            [
                'id'       => 'line-height',
                'icon'     => 'format_line_spacing',
                'label'    => 'Line Height',
                'default'  => true,
                'has_step' => true,
            ],
            [
                'id'       => 'letter-spacing',
                'icon'     => 'format_letter_spacing',
                'label'    => 'Letter Spacing',
                'default'  => true,
                'has_step' => true,
            ],
            [
                'id'      => 'readable-font',
                'icon'    => 'hdr_auto',
                'label'   => 'Readable Font',
                'default' => true,
            ],
            [
                'id'      => 'dyslexic-font',
                'icon'    => 'brand_family',
                'label'   => 'Dyslexic Font',
                'default' => true,
            ],
            [
                'id'       => 'text-align',
                'icon'     => 'format_align_left',
                'label'    => 'Text Align',
                'default'  => true,
                'has_step' => true,
            ],
            [
                'id'      => 'text-magnifier',
                'icon'    => 'loupe',
                'label'   => 'Text Magnifier',
                'default' => true,
            ],
            [
                'id'      => 'highlight-links',
                'icon'    => 'link',
                'label'   => 'Highlight Links',
                'default' => true,
            ],
            [
                'id'       => 'invert-colors',
                'icon'     => 'invert_colors',
                'label'    => 'Invert Colors',
                'default'  => true,
                'has_step' => true,
            ],
            [
                'id'       => 'brightness',
                'icon'     => 'brightness_6',
                'label'    => 'Brightness',
                'default'  => true,
                'has_step' => true,
            ],
            [
                'id'       => 'contrast',
                'icon'     => 'contrast',
                'label'    => 'Contrast',
                'has_step' => true,
                'default'  => true,
            ],
            [
                'id'       => 'gray-scale',
                'icon'     => 'filter_b_and_w',
                'label'    => 'Grayscale',
                'default'  => true,
                'has_step' => true,
            ],
            [
                'id'       => 'saturation',
                'icon'     => 'palette',
                'label'    => 'Saturation',
                'default'  => true,
                'has_step' => true,
            ],
            [
                'id'      => 'reading-line',
                'icon'    => 'insert_page_break',
                'label'   => 'Reading Line',
                'default' => true,
            ],
            [
                'id'      => 'reading-mask',
                'icon'    => 'credit_card',
                'label'   => 'Reading Mask',
                'default' => true,
            ],
            [
                'id'      => 'highlight-all',
                'icon'    => 'highlight',
                'label'   => 'Highlight All',
                'default' => true,
            ],
            [
                'id'      => 'highlight-titles',
                'icon'    => 'title',
                'label'   => 'Highlight Titles',
                'default' => true,
            ],
            [
                'id'      => 'keyboard',
                'icon'    => 'keyboard',
                'label'   => 'Keyboard',
                'default' => true,
            ],
            [
                'id'      => 'hide-images',
                'icon'    => 'hide_image',
                'label'   => 'Hide Images',
                'default' => true,
            ],
            [
                'id'      => 'text-to-speech',
                'icon'    => 'text_to_speech',
                'label'   => 'Text to Speech',
                'default' => true,
            ],
            [
                'id'      => 'mute-sounds',
                'icon'    => 'volume_off',
                'label'   => 'Mute Sounds',
                'default' => true,
            ],
            [
                'id'      => 'stop-animations',
                'icon'    => 'animation',
                'label'   => 'Stop Animations',
                'default' => true,
            ],
            [
                'id'      => 'simplify-text',
                'icon'    => 'description',
                'label'   => 'Simplify Text',
                'default' => false,
            ],
            [
                'id'      => 'scan-page',
                'icon'    => 'scan',
                'label'   => 'Scan Page',
                'default' => false,
            ]
        ];
        return ( $key === null ? $features : array_filter( $features, fn( $feature ) => $feature['id'] === $key ) );
    }

    /**
     * Render accessibility toolbar
     */
    public function render_accessibility_toolbar() {
        $options = get_option( 'accessimate_options' );
        if ( !isset( $options['enable_toolbar'] ) || !$options['enable_toolbar'] ) {
            return;
        }
        $position = $options['toolbar_position'] ?? 'bottom-right';
        ?>

        <div data-accessimate-theme="<?php 
        echo esc_attr( $options['toolbar_theme'] ?? 'auto' );
        ?>" id="accessimate-toolbar" class="accessimate-toolbar accessimate-<?php 
        echo esc_attr( $position );
        ?>">
            <div class="accessimate-toolbar-toggle">
                <button id="accessimate-toggle" aria-label="<?php 
        esc_attr_e( 'Toggle Accessibility Options', 'accessimate' );
        ?>">
                    <span class="accessimate-icon">accessibility</span>
                </button>
            </div>
            
            <div id="accessimate-panel" class="accessimate-panel" style="display: none;" data-animation="<?php 
        echo esc_attr( $options['toolbar_animation'] ?? 'slide-top' );
        ?>">
                <div class="accessimate-panel-header">
                    <h3><?php 
        esc_html_e( 'Accessibility', 'accessimate' );
        ?></h3>
                    <div class="accessimate-header-actions">
                        <button id="accessimate-theme-toggle" class="accessimate-theme-toggle" aria-label="Toggle dark mode">
                            <span class="accessimate-icon">brightness_4</span>
                        </button>
                        <button id="accessimate-close" aria-label="<?php 
        esc_attr_e( 'Close Accessibility Panel', 'accessimate' );
        ?>">
                            <span class="accessimate-icon">close</span>
                        </button>
                    </div>
                </div>
                
                <div class="accessimate-panel-content">
                    <?php 
        foreach ( $this->getFeatures() as $feature ) {
            $id = $feature['id'];
            $icon = $feature['icon'];
            $label = $feature['label'];
            $label_id = "accessimate-option-label-{$id}";
            $has_step = isset( $feature['has_step'] ) && $feature['has_step'];
            $is_active = filter_var( $options[$id] ?? $feature['default'] ?? false, FILTER_VALIDATE_BOOLEAN );
            ?>

                        <?php 
            if ( $is_active ) {
                ?>
                        <button id="accessimate-<?php 
                echo esc_attr( $id );
                ?>" class="accessimate-btn">
                            <span class="accessimate-icon"><?php 
                echo esc_html( $icon );
                ?></span>
                            <span class="accessimate-option-label" id="<?php 
                echo esc_attr( $label_id );
                ?>">
                                <?php 
                esc_html_e( $label, 'accessimate' );
                ?>
                            </span>
                            <?php 
                if ( $has_step ) {
                    ?>
                                <div class="accessimate-option-step"></div>
                            <?php 
                }
                ?>
                        </button>
                        <?php 
            }
            ?>
                    <?php 
        }
        ?>
                </div>
                <div class="accessimate-panel-footer">
                    <button id="accessimate-reset" class="accessimate-btn accessimate-btn-full accessimate-btn-reset">
                        <span class="accessimate-icon">reset_settings</span>
                        <?php 
        esc_html_e( 'Reset All', 'accessimate' );
        ?>
                    </button>
                </div>
            </div>
        </div>
        
        <?php 
        if ( isset( $options['enable_skip_links'] ) && $options['enable_skip_links'] ) {
            ?>
        <a href="#main" class="accessimate-skip-link"><?php 
            esc_html_e( 'Skip to main content', 'accessimate' );
            ?></a>
        <?php 
        }
        ?>
        <?php 
    }

    /**
     * Save user preferences via AJAX
     */
    public function save_user_preferences() {
        // Verify nonce for security
        if ( !check_ajax_referer( 'accessimate_nonce', 'nonce', false ) ) {
            wp_send_json_error( [
                'message' => __( 'Security check failed', 'accessimate' ),
            ] );
        }
        // Validate input
        if ( !isset( $_POST['preferences'] ) ) {
            wp_send_json_error( [
                'message' => __( 'Missing preferences data', 'accessimate' ),
            ] );
        }
        $preferences = sanitize_text_field( wp_unslash( $_POST['preferences'] ) );
        $session_id = session_id();
        if ( empty( $session_id ) ) {
            session_start();
            $session_id = session_id();
        }
        global $wpdb;
        $table_name = "{$wpdb->prefix}accessimate_user_prefs";
        // Direct database query is necessary here as WordPress doesn't provide
        // a built-in API for custom user preference storage with session handling
        // phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching
        $result = $wpdb->replace( $table_name, [
            'user_session' => $session_id,
            'preferences'  => $preferences,
        ], ['%s', '%s'] );
        if ( false === $result ) {
            wp_send_json_error( [
                'message' => __( 'Failed to save preferences', 'accessimate' ),
            ] );
        }
        wp_send_json_success( [
            'message' => __( 'Preferences saved successfully', 'accessimate' ),
        ] );
    }

}