functions.php

<?php
/**
 * Begonia functions and definitions
 *
 * @link https://developer.wordpress.org/themes/basics/theme-functions/
 *
 * @package Begonia
 */

if ( ! function_exists( 'begonia_lite_setup' ) ) :
	/**
	 * Sets up theme defaults and registers support for various WordPress features.
	 * Note that this function is hooked into the after_setup_theme hook, which
	 * runs before the init hook. The init hook is too late for some features, such
	 * as indicating support for post thumbnails.
	 */
	function begonia_lite_setup() {

		/*
		 * Make theme available for translation.
		 * Translations can be filed in the /languages/ directory.
		 */
		load_theme_textdomain( 'begonia-lite', get_template_directory() . '/languages' );

		// Add default posts and comments RSS feed links to head.
		add_theme_support( 'automatic-feed-links' );

		/*
		* Let WordPress manage the document title.
		* By adding theme support, we declare that this theme does not use a
		* hard-coded <title> tag in the document head, and expect WordPress to
		* provide it for us.
		*/
		add_theme_support( 'title-tag' );

		/*
		 * Enable support for Post Thumbnails on posts and pages.
		 *
		 * @link http://codex.wordpress.org/Function_Reference/add_theme_support#Post_Thumbnails
		 */
		add_theme_support( 'post-thumbnails' );
		add_image_size( 'begonia-lite-masonry-image', 450, 9999, false );
		add_image_size( 'begonia-lite-single-image', 1024, 9999, false );
		add_image_size( 'begonia-lite-navigation-thumbnails', 236, 9999, false );

		// This theme uses wp_nav_menu() in three locations.
		register_nav_menus( array(
			'primary'   => __( 'Primary Menu', 'begonia-lite' ),
		) );

		/*
		 * Switch default core markup for search form, comment form, and comments
		 * to output valid HTML5.
		 */
		add_theme_support( 'html5', array(
			'search-form',
			'comment-form',
			'comment-list',
			'gallery',
			'caption'
		) );
	}
endif; // begonia_lite_setup

add_action( 'after_setup_theme', 'begonia_lite_setup' );

/**
 * Set the content width in pixels, based on the theme's design and stylesheet.
 *
 * Priority 0 to make it available to lower priority callbacks.
 *
 * @global int $content_width
 */
function begonia_lite_content_width() {
	$GLOBALS['content_width'] = apply_filters( '_s_content_width', 640 );
}
add_action( 'after_setup_theme', 'begonia_lite_content_width', 0 );

/**
 * Register widget area.
 *
 * @link https://developer.wordpress.org/themes/functionality/sidebars/#registering-a-sidebar
 */
function begonia_lite_widgets_init() {
	register_sidebar( array(
		'name'          => esc_html__( 'Footer Sidebar', 'begonia-lite' ),
		'id'            => 'footer-sidebar',
		'description'   => esc_html__( 'Add widgets here.', 'begonia-lite' ),
		'before_widget' => '<section id="%1$s" class="widget %2$s">',
		'after_widget'  => '</section>',
		'before_title'  => '<h2 class="widget-title">',
		'after_title'   => '</h2>',
	) );
}
add_action( 'widgets_init', 'begonia_lite_widgets_init' );

/**
 * Enqueue scripts and styles.
 */
function begonia_lite_scripts() {
	wp_enqueue_style( 'begonia-lite-style', get_stylesheet_uri() );

	if ( is_singular() && comments_open() && get_option( 'thread_comments' ) ) {
		wp_enqueue_script( 'comment-reply' );
	}
	wp_enqueue_script( 'begonia-lite-scripts', get_template_directory_uri() . '/assets/js/main.js', array( 'jquery' ), '20120209', true );

}
add_action( 'wp_enqueue_scripts', 'begonia_lite_scripts' );

/**
 * Custom template tags for this theme.
 */
require get_template_directory() . '/inc/template-tags.php';

/**
 * Custom functions that act independently of the theme templates.
 */
require get_template_directory() . '/inc/extras.php';