<?php

function init() {
    // Adds Thumbnails for supported
    add_theme_support( 'post-thumbnails' );
    // Customizes Tumbnail Size
    set_post_thumbnail_size( 150, 150 );
    add_image_size('Custom Imagesize', 0, 200, false);

    // Only in frontend
    if (!is_admin()) {
        // Include Wordpress predefinded scripts
        wp_enqueue_script('jquery');
        wp_enqueue_script('jquery-ui');
        wp_enqueue_script('jquery-effects-core');

        // Include custom defined Script
        wp_enqueue_script('html5shiv', '//cdnjs.cloudflare.com/ajax/libs/html5shiv/3.7.2/html5shiv.min.js');


        // Include custom defined style
        wp_enqueue_style('fontawsome', '//maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css');
        // Include local style
        wp_enqueue_style('style', get_template_directory_uri() . '/style.css');
    }

    // Register custom menu
    register_nav_menu('mymenu', 'Hauptmen&uuml;');

    // Register custom post_type
    register_post_type('book', array(
        'labels' => array(
            'name' => __('B&uuml;cher'),
            'singular_name' => __('Buch')
        ),
        'public' => true,
        'has_archive' => true,
        'supports' => array('title', 'author', 'thumbnail', 'excerpt', 'isbn')
    ));

    register_taxonomy(
            'author', 'book', array(
                'label' => __('Autor'),
                'rewrite' => array('slug' => 'author'),
                'hierarchical' => false,
            )
    );

    // Register custom taxonomy
    register_taxonomy(
            'genre', 'book', array(
                'label' => __('Genre'),
                'rewrite' => array('slug' => 'genre'),
                'hierarchical' => true,
            )
    );
}
add_action('init', init);

function widgets_init() {
    register_sidebar(array(
        'name' => 'Widget Area',
        'id' => 'w_a',
        'before_widget' => '<div class="widget">',
        'after_widget' => '</div>',
        'before_title' => '<h2 class="rounded">',
        'after_title' => '</h2>',
    ));
}
add_action('widgets_init', 'widgets_init');

/**
 * Adds a box to the main column on the Post and Page edit screens.
 */
function myplugin_add_meta_box() {
    add_meta_box('isbn','ISBN','myplugin_meta_box_callback');
}
add_action( 'add_meta_boxes', 'myplugin_add_meta_box' );

/**
 * Prints the box content.
 *
 * @param WP_Post $post The object for the current post/page.
 */
function myplugin_meta_box_callback( $post ) {

	// Add a nonce field so we can check for it later.
	wp_nonce_field( 'myplugin_meta_box', 'myplugin_meta_box_nonce' );

	/*
	 * Use get_post_meta() to retrieve an existing value
	 * from the database and use the value for the form.
	 */
	$value = get_post_meta( $post->ID, 'book_isbn', true );

	echo '<label for="myplugin_new_field">';
	_e( 'ISBN', 'myplugin_textdomain' );
	echo '</label> ';
	echo '<input type="text" id="myplugin_new_field" name="myplugin_new_field" value="' . esc_attr( $value ) . '" size="25" />';
}

/**
 * When the post is saved, saves our custom data.
 *
 * @param int $post_id The ID of the post being saved.
 */
function myplugin_save_meta_box_data( $post_id ) {

	/*
	 * We need to verify this came from our screen and with proper authorization,
	 * because the save_post action can be triggered at other times.
	 */

	// Check if our nonce is set.
	if ( ! isset( $_POST['myplugin_meta_box_nonce'] ) ) {
		return;
	}

	// Verify that the nonce is valid.
	if ( ! wp_verify_nonce( $_POST['myplugin_meta_box_nonce'], 'myplugin_meta_box' ) ) {
		return;
	}

	// If this is an autosave, our form has not been submitted, so we don't want to do anything.
	if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) {
		return;
	}

	// Check the user's permissions.
	if ( isset( $_POST['post_type'] ) && 'page' == $_POST['post_type'] ) {

		if ( ! current_user_can( 'edit_page', $post_id ) ) {
			return;
		}

	} else {

		if ( ! current_user_can( 'edit_post', $post_id ) ) {
			return;
		}
	}

	/* OK, it's safe for us to save the data now. */

	// Make sure that it is set.
	if ( ! isset( $_POST['myplugin_new_field'] ) ) {
		return;
	}

	// Sanitize user input.
	$my_data = sanitize_text_field( $_POST['myplugin_new_field'] );

	// Update the meta field in the database.
	update_post_meta( $post_id, 'book_isbn', $my_data );
}
add_action( 'save_post', 'myplugin_save_meta_box_data' );

function wpFrame($title) {
    return '<i class="fa fa-wordpress"></i>' . $title . '<i class="fa fa-wordpress"></i>';
}
//add_filter('the_title', wpFrame);
//add_filter('the_content', wpFrame);