functions.php

<?php

	if ( ! isset( $content_width ) ) {
		$content_width = 700;
	}


	/*********************/
	/* FRONT-END ACTIONS */
	/*********************/

	// scipt loader tag callback function for adding script type="module" to firebird script tag
	function add_type_attribute($tag, $handle, $src) {
		if ( 'firebird-scripts' === $handle  ) {
			$tag = '<script type="module" src="' . esc_url( $src ) . '"></script>';
		// } else if ( 'site-scripts' === $handle ) {
		// 	$tag = '<script type="module" src="' . esc_url( $src ) . '"></script>';
		} 	
		return $tag;
	}

	/**
	 *  Enqueues the global styles and scripts.
	 *  Generally, use minimized styles/scripts in prod and unminimized files for local development.
	 */
	function pg_enqueue_site_files() {

		$BABEL_ROOT = str_replace('www', 'babel', $_SERVER['DOCUMENT_ROOT']);
		$manifest = json_decode(
			file_get_contents($BABEL_ROOT . '/firebird-common/dist/manifest.json'),
			true
		);

		$base_path = ('local' === wp_get_environment_type())
			? '/firebird-common/dist/'
			: '/common/firebird/dist/';

		$firebird_manifest = [
			'stylesheet' => $base_path . $manifest['index.css']['file'],
			'script'     => $base_path . $manifest['index.html']['file'],
		];

		/*
		STYLES
		*/ 

		/* fonts, firebird, theme styles */
		wp_enqueue_style( 'site-fonts', get_template_directory_uri() . '/fonts.min.css', NULL, filemtime( get_template_directory() . '/fonts.css' ) );
		wp_enqueue_style( 'firebird-styles', $firebird_manifest['stylesheet']);
		if ( 'local' === wp_get_environment_type() ) {
			wp_enqueue_style( 'site-styles', get_template_directory_uri() . '/src/css/style.css', array( 'site-fonts', 'firebird-styles' ), filemtime( get_template_directory() . '/src/css/style.css' ) );
		} else {
			wp_enqueue_style( 'site-styles', get_template_directory_uri() . '/dist/css/style.min.css', array( 'site-fonts', 'firebird-styles' ), filemtime( get_template_directory() . '/dist/css/style.min.css' ) );
		}	

		/* homepage styles */
		if ( is_front_page() && 'local' === wp_get_environment_type() ) {
			wp_enqueue_style( 'home-styles', get_template_directory_uri() . '/src/css/home.css', array( 'site-fonts', 'site-styles', 'firebird-styles'), filemtime( get_template_directory() . '/src/css/home.css' ) );
		} else if ( is_front_page() ) {
			wp_enqueue_style( 'home-styles', get_template_directory_uri() . '/dist/css/home.min.css', array( 'site-fonts', 'site-styles', 'firebird-styles' ), filemtime( get_template_directory() . '/dist/css/home.min.css' ) );
		}

		/* 
		SCRIPTS
		*/

		

		/* theme and firebird scripts */
		  wp_enqueue_script('firebird-scripts', $firebird_manifest['script'], array(), false, false);
		if ( 'local' === wp_get_environment_type() ) {
			// if you need your local firebird
			// wp_enqueue_script( 'firebird-scripts', '//localhost:5173/js/main.js', array(), false, false);
			wp_enqueue_script( 'site-scripts', get_template_directory_uri() . '/src/js/scripts.js', array('firebird-scripts'), filemtime( get_template_directory() . '/src/js/scripts.js' ), TRUE );
			wp_enqueue_script( 'cookie-scripts', get_template_directory_uri() . '/src/js/cookies.js', array('firebird-scripts'), filemtime( get_template_directory() . '/src/js/cookies.js' ), TRUE );
			wp_enqueue_script( 'highlight-scripts', get_template_directory_uri() . '/src/js/highlight.js', array('firebird-scripts'), filemtime( get_template_directory() . '/src/js/highlight.js' ), TRUE );
		} else {
			wp_enqueue_script( 'site-scripts', get_template_directory_uri() . '/dist/js/scripts.min.js', array('firebird-scripts'), filemtime( get_template_directory() . '/dist/js/scripts.min.js' ), TRUE );
			wp_enqueue_script( 'cookie-scripts', get_template_directory_uri() . '/dist/js/cookies.min.js', array('firebird-scripts'), filemtime( get_template_directory() . '/dist/js/cookies.min.js' ), TRUE );
			wp_enqueue_script( 'highlight-scripts', get_template_directory_uri() . '/dist/js/highlight.min.js', array('firebird-scripts'), filemtime( get_template_directory() . '/dist/js/highlight.min.js' ), TRUE );
			// hotjar script is added through firebird-common + ping
		}

		/* matomo */
		if ( 'development' === wp_get_environment_type() || 'local' === wp_get_environment_type() || 'staging' === wp_get_environment_type() ) {
			wp_enqueue_script( 'testing-matomo-script', get_template_directory_uri() . '/src/js/testing-matomo.js', array('firebird-scripts'), filemtime( get_template_directory() . '/src/js/testing-matomo.js' ), TRUE);
		} 
		if ( 'production' === wp_get_environment_type() ) {
			wp_enqueue_script( 'matomo-script', get_template_directory_uri() . '/src/js/matomo.js', array('firebird-scripts'), filemtime( get_template_directory() . '/src/js/matomo.js' ), TRUE);
		}

	}
	add_action( 'wp_enqueue_scripts', 'pg_enqueue_site_files' );
	add_filter( 'script_loader_tag', 'add_type_attribute', 10, 3);

	/**
	 *  Customize login page
	 */
	function custom_login_page() { ?>
    <style type="text/css">
		body.login form#loginform {
			border-radius: 0.375rem;
		}
		body.login #loginform .row a {
			display:inline-flex;
			width:100%;
		}
		body.login #loginform .row .mo_oauth_login_button {
			padding: 0;
			border-width: 0;
			cursor: pointer;
			display: inline-flex;
			align-items: center;
			padding: 0.5rem 1rem;
			border: 1px solid;
			border-radius: 0.375rem;
			font-weight: 800;
			line-height: 1.31;
			text-decoration: none;
			color:white;
			box-shadow: none;
		}
    </style>
	
	<?php }
	add_action( 'login_enqueue_scripts', 'custom_login_page' );

	/**
	 *  Activate extended theme features.
	 */
	function pg_custom_theme_setup() {

		add_editor_style( 'fonts.min.css' );
		add_editor_style( '/dist/css/editor-style.min.css' );

		add_image_size( 'person', 100, 100, TRUE );

		add_theme_support( 'html5', array( 'caption', 'script', 'style' ) );
		add_theme_support( 'menus' );
		add_theme_support( 'title-tag' );

		add_post_type_support( 'page', 'excerpt' );

	}
	add_action( 'after_setup_theme', 'pg_custom_theme_setup' );

	/**
	 *  Register locations for navigation. @TODO: This can be removed after header/footer integration.
	 */
	function pg_register_menus() {
		register_nav_menus( array(
			'temp'	=> 'Homepage Temporary'
		) );
	}
	add_action( 'init', 'pg_register_menus' );

	/**
	 *	Modifies the default number of search results per page.
	 */
	function pg_increase_search_results_count( $query ) {
		if ( ! is_admin() && $query->is_main_query() ) {
			if ( $query->is_search ) {
				$query->set( 'posts_per_page', 20 );
			}
		}
	}
	add_action( 'pre_get_posts', 'pg_increase_search_results_count' );

	/*********************/
	/* BACK-END ACTIONS */
	/*********************/

	/**
	 *  Disable unused default WordPress features.
	 */
	function pg_remove_comments() {
		remove_post_type_support( 'post', 'comments' );
		remove_post_type_support( 'page', 'comments' );
	}
	add_action( 'init', 'pg_remove_comments' );

	/**
	 *  Suppresses unused default WordPress pages from the admin menu.
	 */
	function pg_remove_menus() {

		global $submenu;

		remove_menu_page( 'edit.php' );
		remove_menu_page( 'edit-comments.php' );

	}
	add_action( 'admin_menu', 'pg_remove_menus' );

	/**
	 *  Suppresses unused default WordPress pages from the admin bar.
	 */
	function pg_remove_nodes( $wp_admin_bar ) {
		$wp_admin_bar->remove_node( 'new-post' );
		$wp_admin_bar->remove_node( 'comments' );
	}
	add_action( 'admin_bar_menu', 'pg_remove_nodes', 999 );


	/*********************/
	/* FRONT-END FILTERS */
	/*********************/

	/**
	 *	Adds additional legal tags to wp_kses().
	 */
	function pg_add_additional_tags_to_wpkses( $tags, $context ) {

		if ( 'post' === $context ) {
			$tags['iframe'] = array(
				'allow'				=> TRUE,
				'allowfullscreen'	=> TRUE,
				'frameborder'		=> TRUE,
				'height'			=> TRUE,
				'loading'			=> TRUE,
				'src'				=> TRUE,
				'width'				=> TRUE,
			);
		}

		return $tags;
	}

	add_filter( 'wp_kses_allowed_html', 'pg_add_additional_tags_to_wpkses', 10, 2 );


	/********************/
	/* BACK-END FILTERS */
	/********************/

	/**
	 *  Suppresses unused default WordPress post list columns.
	 */
	function pg_set_edit_columns( $columns ) {
		unset( $columns['author'] );
		unset( $columns['comments'] );
		unset( $columns['posts'] );
		return $columns;
	}
	add_filter( 'manage_media_columns', 'pg_set_edit_columns' );
	add_filter( 'manage_pages_columns', 'pg_set_edit_columns' );
	add_filter( 'manage_users_columns', 'pg_set_edit_columns' );

	/**
	 *  Remove unused buttons from TinyMCE row 1.
	 */
	function pg_tinymce1( $buttons ) {
		return array_diff( $buttons, array( 'aligncenter', 'alignleft', 'alignright', 'blockquote', 'wp_more' ) );
	}
	add_filter( 'mce_buttons', 'pg_tinymce1' );

	/**
	 *  Remove unused buttons from TinyMCE row 2.
	 */
	function pg_tinymce2( $buttons ) {
		array_unshift( $buttons, 'styleselect' );
		return array_diff( $buttons, array( 'forecolor', 'outdent', 'indent' ) );
	}
	add_filter( 'mce_buttons_2', 'pg_tinymce2' );

	/**
	 *  TinyMCE configuration.
	 */
	function pg_editor_styles( $settings ) {

		// updates the block formats dropdown
		$settings['block_formats'] = 'Paragraph=p;Heading 2=h2;Heading 3=h3;Heading 4=h4;Heading 5=h5;Heading 6=h6';

		// populates formats dropdown with theme-specific values
		$style_formats = array(
			array( 'title' => 'Button (Primary)', 'selector' => 'a', 'classes' => 'btn btn-primary' ),
			array( 'title' => 'Button (Secondary)', 'selector' => 'a', 'classes' => 'btn btn-secondary' ),
			array( 'title' => 'Button (Tertiary)', 'selector' => 'a', 'classes' => 'btn btn-tertiary' ),
			array( 'title' => 'Button with Arrow', 'selector' => 'a', 'classes' => 'btn-arrow' ),
			array( 'title' => 'Button with Info', 'selector' => 'a', 'classes' => 'btn-info' ),
			array( 'title' => 'Button with PDF', 'selector' => 'a', 'classes' => 'btn-pdf' ),
			array( 'title' => 'Button with Quote', 'selector' => 'a', 'classes' => 'btn-quote' ),
			array( 'title' => 'Link with Arrow', 'selector' => 'a', 'classes' => 'link-arrow' ),
			array( 'title' => 'Spaced List', 'selector' => 'ol,ul', 'classes' => 'spacedlist' )
		);
		$settings['style_formats'] = json_encode( $style_formats );

		// cache invalidation for included stylesheets
		$settings['cache_suffix'] = '?v=' . max( array( filemtime( get_template_directory() . '/dist/css/editor-style.min.css' ), filemtime( get_template_directory() . '/fonts.min.css' ) ) );

		return $settings;

	}
	add_filter( 'tiny_mce_before_init', 'pg_editor_styles' );


	/********************/
	/* PLUGIN SETTINGS */
	/*******************/

	/**
	 *  Hides the ACF "Custom Fields" menu (/wp-admin/edit.php?post_type=acf-field-group).
	 */
	#add_filter( 'acf/settings/show_admin', '__return_false' );

	/**
	 *  Registers the parent ACF options page.
	 */
	function pg_acf_options_page() {
		acf_add_options_page( array( 'page_title' => 'Site Settings', 'redirect' => FALSE ) );
	}
	add_action( 'acf/init', 'pg_acf_options_page', 97 );


	/**
	 *  Populate ACF "Navigation Menus" select field with Menus.
	 */
	function pg_acf_populate_select_with_menus( $field ) {

		$menus = get_terms( array(
			'hide_empty'	=> FALSE,
			'taxonomy'		=> 'nav_menu'
		) );

		if ( $menus ) {

			// clear out existing values if there are menus saved
			$field['choices'] = [];

			foreach ( $menus as $menuObj ) {
				$field['choices'][ $menuObj->slug ] = $menuObj->name;
			}

		}

		return $field;

	}
	add_filter( 'acf/load_field/name=menu', 'pg_acf_populate_select_with_menus' );


	/***************************/
	/* CUSTOM POSTS/TAXONOMIES */
	/***************************/

	/**
	 *  Set up custom post types.
	 */
	function pg_custom_post_types() {

		register_post_type( 'blogs',
			array(
				'label'			=> 'Blog',
				'menu_position'	=> 32,
				'menu_icon'		=> 'dashicons-admin-post',
				'public'		=> TRUE,
				'supports'		=> array( 'title', 'editor', 'excerpt' )
			)
		);

		register_post_type( 'events',
			array(
				'label'			=> 'Events',
				'menu_position'	=> 32,
				'menu_icon'		=> 'dashicons-admin-post',
				'public'		=> TRUE,
				'rewrite'		=> array(
					'slug'			=> 'event-post'
				),
				'supports'		=> array( 'title', 'editor', 'excerpt' )
			)
		);

		register_post_type( 'press',
			array(
				'label'			=> 'Press',
				'menu_position'	=> 32,
				'menu_icon'		=> 'dashicons-admin-post',
				'public'		=> TRUE,
				'rewrite'		=> array(
					'slug'			=> 'press-post'
				),
				'supports'		=> array( 'title', 'editor', 'excerpt' )
			)
		);

		register_post_type( 'newsletters',
			array(
				'label'			=> 'Newsletters',
				'menu_position'	=> 32,
				'menu_icon'		=> 'dashicons-admin-post',
				'public'		=> TRUE,
				'rewrite'		=> array(
					'slug'			=> 'newsletter-post'
				),
				'supports'		=> array( 'title', 'excerpt' )
			)
		);

	}
	add_action( 'init', 'pg_custom_post_types' );

	/**
	 *  Set up custom taxonomies.
	 */
	function pg_custom_taxonomies() {

		register_taxonomy( 'categories',
			array( 'blogs' ),
			array(
				'label'					=> 'Blog Categories',
				'meta_box_cb'			=> FALSE,
				'public'				=> FALSE,
				'publicly_queryable'	=> TRUE,
				'show_admin_column'		=> TRUE,
				'show_in_menu'			=> TRUE,
				'show_ui'				=> TRUE
			)
		);

		register_taxonomy( 'tags',
			array( 'blogs' ),
			array(
				'label'					=> 'Blog Tags',
				'meta_box_cb'			=> FALSE,
				'public'				=> FALSE,
				'publicly_queryable'	=> TRUE,
				'show_admin_column'		=> TRUE,
				'show_in_menu'			=> TRUE,
				'show_ui'				=> TRUE
			)
		);

	}
	add_action( 'init', 'pg_custom_taxonomies' );


	/********************/
	/* THEME SHORTCODES */
	/********************/

	/**
	 *  Creates a [year] shortcode.
	 *
	 *  @return	string	Current year.
	 */
	function pg_year_shortcode() {
		return date( 'Y' );
	}
	add_shortcode( 'year', 'pg_year_shortcode' );

	/*****************/
	/* HT DEV CUSTOM */
	/*****************/	

	//format bytes to mb/kb
	function formatBytes($size, $precision = 2) {
		$base = log($size, 1024);
		$suffixes = array('B', 'kB', 'MB', 'GB', 'TB');   

		return round(pow(1024, $base - floor($base)), $precision) .' '. $suffixes[floor($base)];
	}

	// my attempt to write a  directory listing with php
	// TODO: use HT.www_domain to set preview vs prod
	function file_list($directory, $linkpath) {
		
		// $directory = "/htapps/test.www/files/hathifiles";
		$files = new \FileSystemIterator($directory);

		$html = [];
		class HTfile {
			public $fileName;
			// public $filePath;
			public $lastModified;
			public $fileSize;
			// public $fileInfo;
		}
		foreach ($files as $file) {
			$hathifile = new HTfile();
			//if ($files->isDir() ) {
			//  $href = add_query_arg(rawurlencode(base64_encode($directory . '/' . $file)));
			//}
		
			$hathifile->fileName = $files->getFileName();
			// $hathifile->filePath = $files->getPathName();
			$hathifile->lastModified = $files->getMTime();
			$hathifile->fileSize = formatBytes($files->getSize());
			// $hathifile->fileInfo = $files->getFileInfo();

			$html[] = $hathifile;

		}

		//sort array by last modified, starting with newest
		usort($html, function($a, $b) {
			return ($b->lastModified) - ($a->lastModified);
		});

		foreach ($html as $key => $value) {
			// echo "<tr><td><a href='https://www.hathitrust.org/sites/www.hathitrust.org/files/hathifiles/".$value->fileName."'>".$value->fileName."</a></td><td>".date('M d, Y', $value->lastModified)."</td><td>".$value->fileSize."</td></tr>";
			echo "<tr><td><a href='".$linkpath.$value->fileName."'>".$value->fileName."</a></td><td>".date('M d, Y', $value->lastModified)."</td><td>".$value->fileSize."</td></tr>";
		}
	}

	//truncate text, default character limit is 250
	//used in search.php for ACF content excerpts
	function truncate($text, $length = 250) {

		$text = strip_tags($text);

		if (strlen($text) <= $length) {
			return $text;
		}
		$text = substr($text, 0, $length);
		$text = substr($text, 0, strrpos($text, " "));
		$text .= "...";
		return $text;
	}