<?php
function ai_engine_sanitize_checkbox( $checked ) {
    return ( ( isset( $checked ) && true === $checked ) ? true : false );
}

//------------------------------------------------------------------------------//
// Sanitize Font Weight
function ai_engine_sanitize_font_weight( $value ) {
    $valid = array( '100', '200', '300', '400', '500', '600', '700', '800', '900' );
    return in_array( $value, $valid ) ? $value : '400';
}

/*------------------------------------------------------------------------*/

// Sanitize Text Transform
function ai_engine_sanitize_text_transform( $value ) {
    $valid = array( 'none', 'capitalize', 'uppercase', 'lowercase' );
    return in_array( $value, $valid ) ? $value : 'none';
}

/*------------------------------------------------------------------------*/

 function ai_engine_sanitize_choices( $input, $setting ) {
        global $wp_customize; 
        $control = $wp_customize->get_control( $setting->id ); 
        if ( array_key_exists( $input, $control->choices ) ) {
            return $input;
        } else {
            return $setting->default;
        }
    }

/*------------------------------------------------------------------------*/

    function ai_engine_sanitize_choicess($input) {
    $valid = array(
        'Arial'          => 'Arial, sans-serif',
        'Verdana'        => 'Verdana, sans-serif',
        'Helvetica'      => 'Helvetica, sans-serif',
        'Times New Roman'=> '"Times New Roman", serif',
        'Georgia'        => 'Georgia, serif',
        'Courier New'    => '"Courier New", monospace',
        'Trebuchet MS'   => '"Trebuchet MS", sans-serif',
        'Tahoma'         => 'Tahoma, sans-serif',
        'Palatino'       => '"Palatino Linotype", serif',
        'Garamond'       => 'Garamond, serif',
        'Impact'         => 'Impact, sans-serif',
        'Comic Sans MS'  => '"Comic Sans MS", cursive, sans-serif',
        'Lucida Sans'    => '"Lucida Sans Unicode", sans-serif',
        'Arial Black'    => '"Arial Black", sans-serif',
        'Gill Sans'      => '"Gill Sans", sans-serif',
        'Segoe UI'       => '"Segoe UI", sans-serif',
        'Open Sans'      => '"Open Sans", sans-serif',
        'Josefin Sans'         => 'Josefin Sans, sans-serif',
        'Lato'           => 'Lato, sans-serif',
        'Montserrat'     => 'Montserrat, sans-serif',
    );

    return (array_key_exists($input, $valid)) ? $input : '';
}

/*------------------------------------------------------------------------*/

// Sanitize callback function
function ai_engine_sanitize_post_layout($input) {
    $valid = array('one-column', 'right-sidebar', 'left-sidebar', 'three-column', 'four-column');

    if (in_array($input, $valid, true)) {
        return $input;
    }

    return 'right-sidebar'; // Default value if the input is invalid
}

/*------------------------------------------------------------------------*/

// Sanitize Sortable control.
function ai_engine_sanitize_sortable( $val, $setting ) {
    if ( is_string( $val ) || is_numeric( $val ) ) {
        return array(
            esc_attr( $val ),
        );
    }
    $sanitized_value = array();
    foreach ( $val as $item ) {
        if ( isset( $setting->manager->get_control( $setting->id )->choices[ $item ] ) ) {
            $sanitized_value[] = esc_attr( $item );
        }
    }
    return $sanitized_value;
}