<?php
/**
 * Sublime Blog metabox.
 *
 * @package sublime_blog
 */ 
add_action('add_meta_boxes', 'sublime_blog_add_sidebar_layout_box');
function sublime_blog_add_sidebar_layout_box(){    
    add_meta_box(
        'sublime_blog_sidebar_layout',
        __('Sidebar Layout', 'sublime-blog'),
        'sublime_blog_sidebar_layout_callback',
        array( 'page','post' ),
        'normal',
        'high'
    );
}

function sublime_blog_sidebar_layout_callback(){
    global $post;
    $sublime_blog_sidebar_layout = sublime_blog_sidebar_layout_option();

    wp_nonce_field( basename( __FILE__ ), 'sublime_blog_sidebar_layout_nonce' ); ?>
    <table class="form-table">
        <tr>
            <td colspan="4"><em class="f13"><?php esc_html_e( 'Choose Sidebar Template', 'sublime-blog' ); ?></em></td>
        </tr>
        <tr>
            <td>
                <?php  
                    foreach( $sublime_blog_sidebar_layout as $field ){  
                        $layout = get_post_meta( $post->ID, '_sublime_blog_sidebar_layout', true ); ?>
                        <div class="radio-image-wrapper" style="float:left; margin-right:30px;">
                            <label class="description">
                                <span><img src="<?php echo esc_url( $field['thumbnail'] ); ?>" alt="<?php echo esc_attr( $field['label'] ); ?>" /></span><br/>
                                <input type="radio" name="sublime_blog_sidebar_layout" value="<?php echo esc_attr( $field['value'] ); ?>" <?php checked( $field['value'], $layout ); if( empty( $layout ) ){ checked( $field['value'], 'right-sidebar' ); }?>/>&nbsp;<?php echo esc_html( $field['label'] ); ?>
                            </label>
                        </div>
                        <?php 
                    } // end foreach 
                ?>
                <div class="clear"></div>
            </td>
        </tr>
    </table>
    <?php        
}

/**
 * save the custom metabox data
 * @hooked to save_post hook
 */
function sublime_blog_save_sidebar_layout( $post_id ) { 
    $sublime_blog_sidebar_layout = sublime_blog_sidebar_layout_option(); 

    if( !isset( $_POST[ 'sublime_blog_sidebar_layout_nonce' ] ) || !wp_verify_nonce( $_POST[ 'sublime_blog_sidebar_layout_nonce' ], basename( __FILE__ ) ) )
        return;

    if( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE )  
        return;
        
    if( 'page' == $_POST['post_type'] ){  
        if( !current_user_can( 'edit_page', $post_id ) ) return $post_id;  
    }elseif( !current_user_can( 'edit_post', $post_id ) ){  
        return $post_id;  
    }  
    
    $layout = isset( $_POST['sublime_blog_sidebar_layout'] ) ? sanitize_key( $_POST['sublime_blog_sidebar_layout'] ) : 'default-sidebar';

    if( array_key_exists( $layout, $sublime_blog_sidebar_layout ) ){
        update_post_meta( $post_id, '_sublime_blog_sidebar_layout', $layout );
    }else{
        delete_post_meta( $post_id, '_sublime_blog_sidebar_layout' );
    }
}
add_action('save_post', 'sublime_blog_save_sidebar_layout');

if( ! function_exists( 'sublime_blog_sidebar_layout_option' ) ) :
/**
 * Get the sidebar layout option.
 *
 * @return string Sidebar layout.
 */
function sublime_blog_sidebar_layout_option(){
    $sublime_blog_sidebar_layout = array(         
        'right-sidebar' => array(
            'value'     => 'right-sidebar',
            'label'     => __( 'Right sidebar (default)', 'sublime-blog' ),
            'thumbnail' => get_template_directory_uri() . '/images/right-sidebar.png'
        ),
        'no-sidebar' => array(
            'value'     => 'no-sidebar',
            'label'     => __( 'No sidebar', 'sublime-blog' ),
            'thumbnail' => get_template_directory_uri() . '/images/full-width.png'
        )   
    );

    return $sublime_blog_sidebar_layout;
}
endif;