<?php
// Footer background customization
function customize_footer_background($wp_customize) {
    // Add section for footer background customization
    $wp_customize->add_section('footer_background_section', array(
        'title' => __('Footer Background', 'arcs'),
        'priority' => 30,
    ));

    // Background Color
    $wp_customize->add_setting('footer_background_color', array(
        'default' => '#3498db',
        'sanitize_callback' => 'sanitize_hex_color',
    ));
    $wp_customize->add_control(new WP_Customize_Color_Control($wp_customize, 'footer_background_color', array(
        'label' => __('Background Color', 'arcs'),
        'section' => 'footer_background_section',
    )));

    // Background Gradient
    $wp_customize->add_setting('footer_background_gradient', array(
        'default' => '',
        'sanitize_callback' => 'sanitize_text_field',
    ));
    $wp_customize->add_control('footer_background_gradient', array(
        'label' => __('Background Gradient', 'arcs'),
        'section' => 'footer_background_section',
    ));

    // Background Image
    $wp_customize->add_setting('footer_background_image', array(
        'default' => '',
        'sanitize_callback' => 'esc_url_raw',
    ));
    $wp_customize->add_control(new WP_Customize_Image_Control($wp_customize, 'footer_background_image', array(
        'label' => __('Background Image', 'arcs'),
        'section' => 'footer_background_section',
    )));

    // Background Position
    $wp_customize->add_setting('footer_background_position', array(
        'default' => 'center center',
        'sanitize_callback' => 'sanitize_text_field',
    ));
    $wp_customize->add_control('footer_background_position', array(
        'label' => __('Background Position', 'arcs'),
        'section' => 'footer_background_section',
    ));

    // Background Size
    $wp_customize->add_setting('footer_background_size', array(
        'default' => 'cover',
        'sanitize_callback' => 'sanitize_text_field',
    ));
    $wp_customize->add_control('footer_background_size', array(
        'label' => __('Background Size', 'arcs'),
        'section' => 'footer_background_section',
    ));

    // Background Attachment
    $wp_customize->add_setting('footer_background_attachment', array(
        'default' => 'fixed',
        'sanitize_callback' => 'sanitize_text_field',
    ));
    $wp_customize->add_control('footer_background_attachment', array(
        'label' => __('Background Attachment', 'arcs'),
        'section' => 'footer_background_section',
    ));

    // Background Opacity
    $wp_customize->add_setting('footer_background_opacity', array(
        'default' => 1,
        'sanitize_callback' => 'sanitize_text_field',
    ));
    $wp_customize->add_control('footer_background_opacity', array(
        'label' => __('Background Opacity', 'arcs'),
        'section' => 'footer_background_section',
    ));
}

add_action('customize_register', 'customize_footer_background');

// Output dynamic footer styles in the head
function arcs_footer_dynamic_styles() {
    $footer_bg_color = get_theme_mod('footer_background_color', '#3498db');
    $footer_bg_gradient = get_theme_mod('footer_background_gradient', '');
    $footer_bg_image = get_theme_mod('footer_background_image', '');
    $footer_bg_position = get_theme_mod('footer_background_position', 'center center');
    $footer_bg_size = get_theme_mod('footer_background_size', 'cover');
    $footer_bg_attachment = get_theme_mod('footer_background_attachment', 'fixed');
    $footer_bg_opacity = get_theme_mod('footer_background_opacity', 1);

    $custom_styles = 'background-color: ' . esc_attr($footer_bg_color) . ';';

    if (!empty($footer_bg_gradient)) {
        $custom_styles .= 'background: ' . esc_attr($footer_bg_gradient) . ';';
    }

    if ($footer_bg_image) {
        $custom_styles .= 'background-image: url(' . esc_url($footer_bg_image) . ');';
        $custom_styles .= 'background-position: ' . esc_attr($footer_bg_position) . ';';
        $custom_styles .= 'background-size: ' . esc_attr($footer_bg_size) . ';';
        $custom_styles .= 'background-attachment: ' . esc_attr($footer_bg_attachment) . ';';
    }

    if ($footer_bg_opacity !== '') {
        $custom_styles .= 'opacity: ' . esc_attr($footer_bg_opacity) . ';';
    }

    echo '<style type="text/css">#footer { ' . $custom_styles . ' }</style>';
}

add_action('wp_head', 'arcs_footer_dynamic_styles');
?>