functions.php

<?php


	if (!class_exists('Timber')){
		add_action( 'admin_notices', function(){
			echo '<div class="error"><p>Timber not activated. Make sure you activate the plugin in <a href="' . admin_url('plugins.php#timber') . '">' . admin_url('plugins.php') . '</a></p></div>';
		});
		return;
	}

	class StarterSite extends TimberSite {

		function __construct(){
			add_theme_support('post-formats');
			add_theme_support('post-thumbnails');
			add_theme_support('menus');
			add_filter('timber_context', array($this, 'add_to_context'));
			add_filter('get_twig', array($this, 'add_to_twig'));
			add_action('init', array($this, 'register_post_types'));
			add_action('init', array($this, 'register_taxonomies'));
			add_action('init', array($this, 'tsk_acf_utils'));
			add_action('widgets_init', array($this, 'register_sidebars'));
			parent::__construct();
		}


		// Note that the following included files only need to contain the taxonomy/CPT/Menu arguments and register_whatever function. They are initialized here.
		// http://generatewp.com is nice
		
		function register_post_types(){
			require('lib/custom-types.php');
		}

		function register_taxonomies(){
			require('lib/taxonomies.php');
		}

		function register_menus() {
			require('lib/menus.php');
		}

		function register_sidebars() {
			require('lib/widgets.php');
		}

		function tsk_acf_utils() {
			require('lib/acf-utils.php');
		}

		function add_to_context($context){
			$context['menu'] = new TimberMenu('Main Menu');
			$context['site'] = $this;
			$context['placeholder'] = get_stylesheet_directory_uri() . '/assets/img/util/loader.gif';
			$context['footer_left'] = Timber::get_sidebar('sidebar-footer_left.php');
			$context['footer_right'] = Timber::get_sidebar('sidebar-footer_right.php');
			
			// Site-wide Settings
			$context['site_callout_bool'] = get_field('site_callout_bool', 'options');
			$context['site_callout_text'] = get_field('site_callout_text', 'options');
			$context['site_footer_copyright'] = get_field('site_footer_copyright', 'options');
			$context['site_footer_credits'] = get_field('site_footer_credits', 'options');

			return $context;
		}

		function add_to_twig($twig){
			/* this is where you can add your own fuctions to twig */
			$twig->addExtension(new Twig_Extension_StringLoader());
			// $twig->addFilter('myfoo', new Twig_Filter_Function('myfoo'));
			return $twig;
		}

	}

	new StarterSite();


	
	/*
	 **************************
	 * Custom Theme Functions *
	 **************************
	 *
	 * Namespaced "tsk" - find and replace with your own three-letter-thing.
	 * 
	 */ 

	// Enqueue scripts
	function tsk_scripts() {

		// Use jQuery from CDN, enqueue in footer
		if (!is_admin()) {
			wp_deregister_script('jquery');
			wp_register_script('jquery', '//ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js', array(), null, true);
			wp_enqueue_script('jquery');

			wp_register_script('picturefill', get_template_directory_uri() . '/assets/js/vendor/picturefill.min.js', array(), null);
			wp_register_script('lazysizes', get_template_directory_uri() . '/assets/js/vendor/lazysizes.min.js', array(), null);
			
			wp_enqueue_script('picturefill');
			wp_enqueue_script('lazysizes');
		}

		// Enqueue stylesheet and scripts. Use minified for production.
		// NOTE: will need to change this to get_stylesheet_directory_uri() to allow for child themes later.
		if( WP_ENV == 'production' ) {
			wp_enqueue_style( 'tsk-styles', get_stylesheet_directory_uri() . '/assets/css/main.min.css', 1.0);
			wp_enqueue_script( 'tsk-js', get_stylesheet_directory_uri() . '/assets/js/build/scripts.min.js', array('jquery'), '1.0.0', true );
		} else {
			wp_enqueue_style( 'tsk-styles', get_stylesheet_directory_uri() . '/assets/css/main.css', 1.0);
			wp_enqueue_script( 'tsk-js', get_stylesheet_directory_uri() . '/assets/js/build/scripts.js', array('jquery'), '1.0.0', true );
		}

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

	
	 

	/* 
	 * 
	 * Nice to Haves
	 *
	 */


	// Change Title field placeholders for Custom Post Types
	// (You'll need to register the types, of course)

	function tsk_title_placeholder_text ( $title ) {
		if ( get_post_type() == 'service' ) {
			$title = __( 'Service Name' );
		} else if ( get_post_type() == 'cast-study' ) {
	        $title = __( 'Case Study Name' );
		} else if ( get_post_type() == 'testimonial' ) {
	        $title = __( 'Testimonial Nickname' );
		}
		return $title;
	} 
	// add_filter( 'enter_title_here', 'tsk_title_placeholder_text' );



	// Customize the editor style
	// It's just the Bootstrap typography, but I like it. Got the idea from Roots.io.
	
	function tsk_editor_styles() {
		add_editor_style( 'assets/css/editor-style.css' );
	}
	add_action( 'after_setup_theme', 'tsk_editor_styles' );



	// Add excerpts to pages
	function tsk_add_excerpts_to_pages() {
		add_post_type_support( 'page', 'excerpt' );
	}
	add_action( 'init', 'tsk_add_excerpts_to_pages' );
	


	// Remove inline gallery styles
	add_filter( 'use_default_gallery_style', '__return_false' );





	/*
	 * 
	 * Plugin Helpers
	 *
	 */


	// Load Gravity Forms JS in the footer...really? Sheesh.
	// https://bjornjohansen.no/load-gravity-forms-js-in-footer

	function nl_wrap_gform_cdata_open( $content = '' ) {
		$content = 'document.addEventListener( "DOMContentLoaded", function() { ';
		return $content;
	}
	add_filter( 'gform_cdata_open', 'nl_wrap_gform_cdata_open' );

	function nl_wrap_gform_cdata_close( $content = '' ) {
		$content = ' }, false );';
		return $content;
	}
	add_filter( 'gform_cdata_close', 'nl_wrap_gform_cdata_close' );




	// Make custom fields work with Yoast SEO (only impacts the light, but helpful!)
	// https://imperativeideas.com/making-custom-fields-work-yoast-wordpress-seo/

	// if ( is_admin() ) { // check to make sure we aren't on the front end
	// 	add_filter('wpseo_pre_analysis_post_content', 'tsk_add_custom_to_yoast');

	// 	function nl_add_custom_to_yoast( $content ) {
	// 		global $post;
	// 		$pid = $post->ID;
			
	// 		$custom = get_post_custom($pid);
	// 		unset($custom['_yoast_wpseo_focuskw']); // Don't count the keyword in the Yoast field!

	// 		foreach( $custom as $key => $value ) {
	// 			if( substr( $key, 0, 1 ) != '_' && substr( $value[0], -1) != '}' && !is_array($value[0]) && !empty($value[0])) {
	// 			  $custom_content .= $value[0] . ' ';
	// 			}
	// 		}

	// 		$content = $content . ' ' . $custom_content;
	// 		return $content;

	// 		remove_filter('wpseo_pre_analysis_post_content', 'tsk_add_custom_to_yoast'); // don't let WP execute this twice
	// 	}
	// }



	// Google Analytics snippet from HTML5 Boilerplate
	// Cookie domain is 'auto' configured. See: http://goo.gl/VUCHKM

	define('GOOGLE_ANALYTICS_ID', 'UA-XXXXXX-X');
	function mtn_google_analytics() { ?>
	<script>
	  <?php if (WP_ENV === 'production') : ?>
	    (function(b,o,i,l,e,r){b.GoogleAnalyticsObject=l;b[l]||(b[l]=
	    function(){(b[l].q=b[l].q||[]).push(arguments)});b[l].l=+new Date;
	    e=o.createElement(i);r=o.getElementsByTagName(i)[0];
	    e.src='//www.google-analytics.com/analytics.js';
	    r.parentNode.insertBefore(e,r)}(window,document,'script','ga'));
	  <?php else : ?>
	    function ga() {
	      console.log('GoogleAnalytics: ' + [].slice.call(arguments));
	    }
	  <?php endif; ?>
	  ga('create','<?php echo GOOGLE_ANALYTICS_ID; ?>','auto');ga('send','pageview');
	</script>

	<?php }

	if (GOOGLE_ANALYTICS_ID && (WP_ENV !== 'production' || !current_user_can('manage_options'))) {
	  add_action('wp_footer', 'mtn_google_analytics', 20);
	}






	// Make custom fields work with Yoast SEO (only impacts the light, but helpful!)
	// https://imperativeideas.com/making-custom-fields-work-yoast-wordpress-seo/
	// if ( is_admin() ) { // check to make sure we aren't on the front end
	// 	add_filter('wpseo_pre_analysis_post_content', 'yld_add_custom_to_yoast');

	// 	function yld_add_custom_to_yoast( $content ) {
	// 		global $post;
	// 		$pid = $post->ID;
			
	// 		$custom_content = '';

	// 		$custom = get_post_custom($pid);
	// 		unset($custom['_yoast_wpseo_focuskw']); // Don't count the keyword in the Yoast field!

	// 		foreach( $custom as $key => $value ) {
	// 			if( substr( $key, 0, 1 ) != '_' && substr( $value[0], -1) != '}' && !is_array($value[0]) && !empty($value[0])) {
	// 			  $custom_content .= $value[0] . ' ';
	// 			}
	// 		}

	// 		$content = $content . ' ' . $custom_content;
	// 		return $content;

	// 		remove_filter('wpseo_pre_analysis_post_content', 'mtn_add_custom_to_yoast'); // don't let WP execute this twice
	// 	}
	// }


	// Extend WordPress search to include custom fields
	// http://adambalee.com

	function cf_search_join( $join ) {
	    global $wpdb;

	    if ( is_search() ) {    
	        $join .=' LEFT JOIN '.$wpdb->postmeta. ' ON '. $wpdb->posts . '.ID = ' . $wpdb->postmeta . '.post_id ';
	    }
	    
	    return $join;
	}
	add_filter('posts_join', 'cf_search_join' );

	function cf_search_where( $where ) {
	    global $pagenow, $wpdb;
	   
	    if ( is_search() ) {
	        $where = preg_replace(
	            "/\(\s*".$wpdb->posts.".post_title\s+LIKE\s*(\'[^\']+\')\s*\)/",
	            "(".$wpdb->posts.".post_title LIKE $1) OR (".$wpdb->postmeta.".meta_value LIKE $1)", $where );
	    }

	    return $where;
	}
	add_filter( 'posts_where', 'cf_search_where' );

	function cf_search_distinct( $where ) {
	    global $wpdb;

	    if ( is_search() ) {
	        return "DISTINCT";
	    }

	    return $where;
	}
	add_filter( 'posts_distinct', 'cf_search_distinct' );