<?php

/**

 * Twenty Seventeen functions and definitions

 *

 * @link https://developer.wordpress.org/themes/basics/theme-functions/

 *

 * @package WordPress

 * @subpackage Twenty_Seventeen

 * @since 1.0

 */

/**

 * Twenty Seventeen only works in WordPress 4.7 or later.

 */

if ( version_compare( $GLOBALS['wp_version'], '4.7-alpha', '<' ) ) {

	require get_template_directory() . '/inc/back-compat.php';

	return;

}

/**

 * 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 twentyseventeen_setup() {

	/*

	 * Make theme available for translation.

	 * Translations can be filed at WordPress.org. See: https://translate.wordpress.org/projects/wp-themes/twentyseventeen

	 * If you're building a theme based on Twenty Seventeen, use a find and replace

	 * to change 'twentyseventeen' to the name of your theme in all the template files.

	 */

	load_theme_textdomain( 'twentyseventeen' );

	// 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 https://developer.wordpress.org/themes/functionality/featured-images-post-thumbnails/

	 */

	add_theme_support( 'post-thumbnails' );

	add_image_size( 'twentyseventeen-featured-image', 2000, 1200, true );

	add_image_size( 'twentyseventeen-thumbnail-avatar', 100, 100, true );

	// Set the default content width.

	$GLOBALS['content_width'] = 525;

	// This theme uses wp_nav_menu() in two locations.

	register_nav_menus( array(

		'top'    => __( 'Top Menu', 'twentyseventeen' ),

		'social' => __( 'Social Links Menu', 'twentyseventeen' ),

	) );

	/*

	 * Switch default core markup for search form, comment form, and comments

	 * to output valid HTML5.

	 */

	add_theme_support( 'html5', array(

		'comment-form',

		'comment-list',

		'gallery',

		'caption',

	) );

	/*

	 * Enable support for Post Formats.

	 *

	 * See: https://codex.wordpress.org/Post_Formats

	 */

	add_theme_support( 'post-formats', array(

		'aside',

		'image',

		'video',

		'quote',

		'link',

		'gallery',

		'audio',

	) );

	// Add theme support for Custom Logo.

	add_theme_support( 'custom-logo', array(

		'width'       => 250,

		'height'      => 250,

		'flex-width'  => true,

	) );

	// Add theme support for selective refresh for widgets.

	add_theme_support( 'customize-selective-refresh-widgets' );

	/*

	 * This theme styles the visual editor to resemble the theme style,

	 * specifically font, colors, and column width.

 	 */

	add_editor_style( array( 'assets/css/editor-style.css', twentyseventeen_fonts_url() ) );

	// Define and register starter content to showcase the theme on new sites.

	$starter_content = array(

		'widgets' => array(

			// Place three core-defined widgets in the sidebar area.

			'sidebar-1' => array(

				'text_business_info',

				'search',

				'text_about',

			),

			// Add the core-defined business info widget to the footer 1 area.

			'sidebar-2' => array(

				'text_business_info',

			),

			// Put two core-defined widgets in the footer 2 area.

			'sidebar-3' => array(

				'text_about',

				'search',

			),

		),

		// Specify the core-defined pages to create and add custom thumbnails to some of them.

		'posts' => array(

			'home',

			'about' => array(

				'thumbnail' => '{{image-sandwich}}',

			),

			'contact' => array(

				'thumbnail' => '{{image-espresso}}',

			),

			'blog' => array(

				'thumbnail' => '{{image-coffee}}',

			),

			'homepage-section' => array(

				'thumbnail' => '{{image-espresso}}',

			),

		),

		// Create the custom image attachments used as post thumbnails for pages.

		'attachments' => array(

			'image-espresso' => array(

				'post_title' => _x( 'Espresso', 'Theme starter content', 'twentyseventeen' ),

				'file' => 'assets/images/espresso.jpg', // URL relative to the template directory.

			),

			'image-sandwich' => array(

				'post_title' => _x( 'Sandwich', 'Theme starter content', 'twentyseventeen' ),

				'file' => 'assets/images/sandwich.jpg',

			),

			'image-coffee' => array(

				'post_title' => _x( 'Coffee', 'Theme starter content', 'twentyseventeen' ),

				'file' => 'assets/images/coffee.jpg',

			),

		),

		// Default to a static front page and assign the front and posts pages.

		'options' => array(

			'show_on_front' => 'page',

			'page_on_front' => '{{home}}',

			'page_for_posts' => '{{blog}}',

		),

		// Set the front page section theme mods to the IDs of the core-registered pages.

		'theme_mods' => array(

			'panel_1' => '{{homepage-section}}',

			'panel_2' => '{{about}}',

			'panel_3' => '{{blog}}',

			'panel_4' => '{{contact}}',

		),

		// Set up nav menus for each of the two areas registered in the theme.

		'nav_menus' => array(

			// Assign a menu to the "top" location.

			'top' => array(

				'name' => __( 'Top Menu', 'twentyseventeen' ),

				'items' => array(

					'link_home', // Note that the core "home" page is actually a link in case a static front page is not used.

					'page_about',

					'page_blog',

					'page_contact',

				),

			),

			// Assign a menu to the "social" location.

			'social' => array(

				'name' => __( 'Social Links Menu', 'twentyseventeen' ),

				'items' => array(

					'link_yelp',

					'link_facebook',

					'link_twitter',

					'link_instagram',

					'link_email',

				),

			),

		),

	);

	/**

	 * Filters Twenty Seventeen array of starter content.

	 *

	 * @since Twenty Seventeen 1.1

	 *

	 * @param array $starter_content Array of starter content.

	 */

	$starter_content = apply_filters( 'twentyseventeen_starter_content', $starter_content );

	add_theme_support( 'starter-content', $starter_content );

}

add_action( 'after_setup_theme', 'twentyseventeen_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 twentyseventeen_content_width() {

	$content_width = $GLOBALS['content_width'];

	// Get layout.

	$page_layout = get_theme_mod( 'page_layout' );

	// Check if layout is one column.

	if ( 'one-column' === $page_layout ) {

		if ( twentyseventeen_is_frontpage() ) {

			$content_width = 644;

		} elseif ( is_page() ) {

			$content_width = 740;

		}

	}

	// Check if is single post and there is no sidebar.

	if ( is_single() && ! is_active_sidebar( 'sidebar-1' ) ) {

		$content_width = 740;

	}

	/**

	 * Filter Twenty Seventeen content width of the theme.

	 *

	 * @since Twenty Seventeen 1.0

	 *

	 * @param int $content_width Content width in pixels.

	 */

	$GLOBALS['content_width'] = apply_filters( 'twentyseventeen_content_width', $content_width );

}

add_action( 'template_redirect', 'twentyseventeen_content_width', 0 );

/**

 * Register custom fonts.

 */

function twentyseventeen_fonts_url() {

	$fonts_url = '';

	/*

	 * Translators: If there are characters in your language that are not

	 * supported by Libre Franklin, translate this to 'off'. Do not translate

	 * into your own language.

	 */

	$libre_franklin = _x( 'on', 'Libre Franklin font: on or off', 'twentyseventeen' );

	if ( 'off' !== $libre_franklin ) {

		$font_families = array();

		$font_families[] = 'Libre Franklin:300,300i,400,400i,600,600i,800,800i';

		$query_args = array(

			'family' => urlencode( implode( '|', $font_families ) ),

			'subset' => urlencode( 'latin,latin-ext' ),

		);

		$fonts_url = add_query_arg( $query_args, 'https://fonts.googleapis.com/css' );

	}

	return esc_url_raw( $fonts_url );

}

/**

 * Add preconnect for Google Fonts.

 *

 * @since Twenty Seventeen 1.0

 *

 * @param array  $urls           URLs to print for resource hints.

 * @param string $relation_type  The relation type the URLs are printed.

 * @return array $urls           URLs to print for resource hints.

 */

function twentyseventeen_resource_hints( $urls, $relation_type ) {

	if ( wp_style_is( 'twentyseventeen-fonts', 'queue' ) && 'preconnect' === $relation_type ) {

		$urls[] = array(

			'href' => 'https://fonts.gstatic.com',

			'crossorigin',

		);

	}

	return $urls;

}

add_filter( 'wp_resource_hints', 'twentyseventeen_resource_hints', 10, 2 );

/**

 * Register widget area.

 *

 * @link https://developer.wordpress.org/themes/functionality/sidebars/#registering-a-sidebar

 */

function twentyseventeen_widgets_init() {

	register_sidebar( array(

		'name'          => __( 'Blog Sidebar', 'twentyseventeen' ),

		'id'            => 'sidebar-1',

		'description'   => __( 'Add widgets here to appear in your sidebar on blog posts and archive pages.', 'twentyseventeen' ),

		'before_widget' => '<section id="%1$s" class="widget %2$s">',

		'after_widget'  => '</section>',

		'before_title'  => '<h2 class="widget-title">',

		'after_title'   => '</h2>',

	) );

	register_sidebar( array(

		'name'          => __( 'Footer 1', 'twentyseventeen' ),

		'id'            => 'sidebar-2',

		'description'   => __( 'Add widgets here to appear in your footer.', 'twentyseventeen' ),

		'before_widget' => '<section id="%1$s" class="widget %2$s">',

		'after_widget'  => '</section>',

		'before_title'  => '<h2 class="widget-title">',

		'after_title'   => '</h2>',

	) );

	register_sidebar( array(

		'name'          => __( 'Footer 2', 'twentyseventeen' ),

		'id'            => 'sidebar-3',

		'description'   => __( 'Add widgets here to appear in your footer.', 'twentyseventeen' ),

		'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', 'twentyseventeen_widgets_init' );

/**

 * Replaces "[...]" (appended to automatically generated excerpts) with ... and

 * a 'Continue reading' link.

 *

 * @since Twenty Seventeen 1.0

 *

 * @param string $link Link to single post/page.

 * @return string 'Continue reading' link prepended with an ellipsis.

 */

function twentyseventeen_excerpt_more( $link ) {

	if ( is_admin() ) {

		return $link;

	}

	$link = sprintf( '<p class="link-more"><a href="%1$s" class="more-link">%2$s</a></p>',

		esc_url( get_permalink( get_the_ID() ) ),

		/* translators: %s: Name of current post */

		sprintf( __( 'Continue reading<span class="screen-reader-text"> "%s"</span>', 'twentyseventeen' ), get_the_title( get_the_ID() ) )

	);

	return ' … ' . $link;

}

add_filter( 'excerpt_more', 'twentyseventeen_excerpt_more' );

/**

 * Handles JavaScript detection.

 *

 * Adds a `js` class to the root `<html>` element when JavaScript is detected.

 *

 * @since Twenty Seventeen 1.0

 */

function twentyseventeen_javascript_detection() {

	echo "<script>(function(html){html.className = html.className.replace(/\bno-js\b/,'js')})(document.documentElement);</script>\n";

}

add_action( 'wp_head', 'twentyseventeen_javascript_detection', 0 );

/**

 * Add a pingback url auto-discovery header for singularly identifiable articles.

 */

function twentyseventeen_pingback_header() {

	if ( is_singular() && pings_open() ) {

		printf( '<link rel="pingback" href="%s">' . "\n", get_bloginfo( 'pingback_url' ) );

	}

}

add_action( 'wp_head', 'twentyseventeen_pingback_header' );

/**

 * Display custom color CSS.

 */

function twentyseventeen_colors_css_wrap() {

	if ( 'custom' !== get_theme_mod( 'colorscheme' ) && ! is_customize_preview() ) {

		return;

	}

	require_once( get_parent_theme_file_path( '/inc/color-patterns.php' ) );

	$hue = absint( get_theme_mod( 'colorscheme_hue', 250 ) );

?>

	<style type="text/css" id="custom-theme-colors" <?php if ( is_customize_preview() ) { echo 'data-hue="' . $hue . '"'; } ?>>

		<?php echo twentyseventeen_custom_colors_css(); ?>

	</style>

<?php }

add_action( 'wp_head', 'twentyseventeen_colors_css_wrap' );

/**

 * Enqueue scripts and styles.

 */

function twentyseventeen_scripts() {

	// Add custom fonts, used in the main stylesheet.

	wp_enqueue_style( 'twentyseventeen-fonts', twentyseventeen_fonts_url(), array(), null );

	// Theme stylesheet.

	wp_enqueue_style( 'twentyseventeen-style', get_stylesheet_uri() );

	// Load the dark colorscheme.

	if ( 'dark' === get_theme_mod( 'colorscheme', 'light' ) || is_customize_preview() ) {

		wp_enqueue_style( 'twentyseventeen-colors-dark', get_theme_file_uri( '/assets/css/colors-dark.css' ), array( 'twentyseventeen-style' ), '1.0' );

	}

	// Load the Internet Explorer 9 specific stylesheet, to fix display issues in the Customizer.

	if ( is_customize_preview() ) {

		wp_enqueue_style( 'twentyseventeen-ie9', get_theme_file_uri( '/assets/css/ie9.css' ), array( 'twentyseventeen-style' ), '1.0' );

		wp_style_add_data( 'twentyseventeen-ie9', 'conditional', 'IE 9' );

	}

	// Load the Internet Explorer 8 specific stylesheet.

	wp_enqueue_style( 'twentyseventeen-ie8', get_theme_file_uri( '/assets/css/ie8.css' ), array( 'twentyseventeen-style' ), '1.0' );

	wp_style_add_data( 'twentyseventeen-ie8', 'conditional', 'lt IE 9' );

	// Load the html5 shiv.

	wp_enqueue_script( 'html5', get_theme_file_uri( '/assets/js/html5.js' ), array(), '3.7.3' );

	wp_script_add_data( 'html5', 'conditional', 'lt IE 9' );

	wp_enqueue_script( 'twentyseventeen-skip-link-focus-fix', get_theme_file_uri( '/assets/js/skip-link-focus-fix.js' ), array(), '1.0', true );

	$twentyseventeen_l10n = array(

		'quote'          => twentyseventeen_get_svg( array( 'icon' => 'quote-right' ) ),

	);

	if ( has_nav_menu( 'top' ) ) {

		wp_enqueue_script( 'twentyseventeen-navigation', get_theme_file_uri( '/assets/js/navigation.js' ), array( 'jquery' ), '1.0', true );