teachpress.php

<?php
/**
 * Plugin Name:         teachPress
 * Plugin URI:          http://mtrv.wordpress.com/teachpress/
 * Description:         Powerful publication management for WordPress
 * Author:              Michael Winkler
 * Author URI:          http://mtrv.wordpress.com/
 * Version:             9.0.12
 * Requires at least:   3.9
 * Text Domain:         teachpress
 * Domain Path:         /languages
 * License:             GPL v2 or later
 * License URI:         https://www.gnu.org/licenses/gpl-2.0.html
 * GitHub Plugin URI:   https://github.com/winkm89/teachPress
 * GitHub Branch:       master
 */

/*
   LICENCE

    Copyright 2008-2025 Michael Winkler

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

/************/
/* Includes */
/************/

define('TEACHPRESS_GLOBAL_PATH', plugin_dir_path(__FILE__));

// Loads constants
include_once('core/constants.php');

// Core functions
include_once('core/admin.php');
include_once('core/ajax-callback.php');
include_once('core/class-ajax.php');
include_once('core/class-document-manager.php');
include_once('core/class-export.php');
include_once('core/class-html.php');
include_once('core/class-icons.php');
include_once('core/class-db-helpers.php');
include_once('core/class-db-options.php');
include_once('core/deprecated.php');
include_once('core/feeds.php');
include_once('core/general.php');
include_once('core/shortcodes.php');
include_once('core/publications/class-bibtex.php');
include_once('core/publications/class-bibtex-import.php');
include_once('core/publications/class-bibtex-macros.php');
include_once('core/publications/class-cite-object.php');
include_once('core/publications/class-crossref-import.php');
include_once('core/publications/class-db-authors.php');
include_once('core/publications/class-db-bookmarks.php');
include_once('core/publications/class-db-publications.php');
include_once('core/publications/class-db-tags.php');
include_once('core/publications/class-publication-type.php');
include_once('core/publications/class-award.php');
include_once('core/publications/class-pubmed-import.php');
include_once('core/publications/default-publication-types.php');
include_once('core/publications/default-awards.php');
include_once('core/publications/templates.php');
include_once('core/publications/class-books-widget.php');

// Admin menus
if ( is_admin() ) {
    include_once('admin/class-authors-page.php');
    include_once('admin/class-tags-page.php');
    include_once('admin/add-publication.php');
    include_once('admin/import-publications.php');
    include_once('admin/publication-sources.php');
    include_once('admin/settings.php');
    include_once('admin/show-publications.php');
}

// cron job includes
if ( wp_doing_cron() ) {
    include_once('admin/publication-sources.php');
}

// BibTeX Parse v2.5
if ( !class_exists( 'BIBTEXPARSE' ) ) {
    include_once('includes/bibtexParse/BIBTEXPARSE.php');
    include_once('includes/bibtexParse/BIBTEXCREATORPARSE.php');
}

/*********/
/* Menus */
/*********/

/**
 * Add menu for publications
 * @since 0.9.0
 * @todo Remove support for WordPress <3.9
 */
function tp_add_menu() {
    global $wp_version;
    global $tp_admin_all_pub_page;
    global $tp_admin_your_pub_page;
    global $tp_admin_add_pub_page;
    global $tp_admin_import_page;
    global $tp_admin_sources_page;
    global $tp_admin_show_authors_page;
    global $tp_admin_edit_tags_page;

    $logo = ( version_compare($wp_version, '3.8', '>=') ) ? plugins_url( 'images/logo_small.png', __FILE__) : plugins_url( 'images/logo_small_black.png', __FILE__ );
    $pos = TEACHPRESS_MENU_POSITION;

    $tp_admin_all_pub_page = add_menu_page (
            esc_html__('Publications','teachpress'),
            esc_html__('Publications','teachpress'),
            'use_teachpress',
            'publications.php',
            'tp_show_publications_page',
            $logo,
            $pos);
    $tp_admin_your_pub_page = add_submenu_page(
            'publications.php',
            esc_html__('Your publications','teachpress'),
            esc_html__('Your publications','teachpress'),
            'use_teachpress',
            'teachpress/publications.php',
            'tp_show_publications_page');
    $tp_admin_add_pub_page = add_submenu_page(
            'publications.php',
            esc_html__('Add new', 'teachpress'),
            esc_html__('Add new','teachpress'),
            'use_teachpress',
            'teachpress/addpublications.php',
            'tp_add_publication_page');
    $tp_admin_import_page = add_submenu_page(
            'publications.php',
            esc_html__('Import/Export'),
            esc_html__('Import/Export'),
            'use_teachpress',
            'teachpress/import.php',
            'tp_show_import_publication_page');
    $tp_admin_sources_page = add_submenu_page(
            'publications.php',
            esc_html__('Auto-publish'),
            esc_html__('Auto-publish'),
            'use_teachpress',
            'teachpress/sources.php',
            'tp_show_publication_sources_page');
    $tp_admin_show_authors_page = add_submenu_page(
            'publications.php',
            esc_html__('Authors', 'teachpress'),
            esc_html__('Authors', 'teachpress'),
            'use_teachpress',
            'teachpress/authors.php',
            array('TP_Authors_Page','init'));
    $tp_admin_edit_tags_page = add_submenu_page(
            'publications.php',
            esc_html__('Tags'),
            esc_html__('Tags'),
            'use_teachpress',
            'teachpress/tags.php',
            array('TP_Tags_Page','init'));

    add_action("load-$tp_admin_all_pub_page", 'tp_show_publications_page_help');
    add_action("load-$tp_admin_all_pub_page", 'tp_show_publications_page_screen_options');
    add_action("load-$tp_admin_your_pub_page", 'tp_show_publications_page_help');
    add_action("load-$tp_admin_your_pub_page", 'tp_show_publications_page_screen_options');
    add_action("load-$tp_admin_add_pub_page", 'tp_add_publication_page_help');
    add_action("load-$tp_admin_import_page", 'tp_import_publication_page_help');
    add_action("load-$tp_admin_sources_page", 'tp_import_publication_sources_help');
    add_action("load-$tp_admin_show_authors_page", array('TP_Authors_Page','add_screen_options'));
    add_action("load-$tp_admin_edit_tags_page", array('TP_Tags_Page','add_screen_options'));
}

/**
 * Add option screen
 * @since 4.2.0
 */
function tp_add_menu_settings() {
    add_options_page(esc_html__('teachPress Settings','teachpress'),'teachPress','administrator','teachpress/settings.php', array('TP_Settings_Page','load_page') );
}

/**
 * Adds custom screen options
 * @global type $tp_admin_show_authors_page
 * @param string $current   Output before the custom screen options
 * @param object $screen    WP_Screen object
 * @return string
 * @since 8.1
 */
function tp_show_screen_options($current, $screen) {
    global $tp_admin_show_authors_page;

    if( !is_object($screen) ) {
        return $current;
    }

    // Show screen options for the authors page
    if ( $screen->id == $tp_admin_show_authors_page ) {
        return $current . TP_Authors_Page::print_screen_options();
    }
}

/*****************/
/* Mainfunctions */
/*****************/

/**
 * Returns the current teachPress version
 * @return string
 */
function get_tp_version() {
    return '9.0.12';
}

/**
 * Returns the WordPress version
 * @global string $wp_version
 * @return string
 * @since 5.0.13
 */
function tp_get_wp_version () {
    global $wp_version;
    return $wp_version;
}

/**
 * Adds the publication feeds
 * @since 6.0.0
 */
function tp_feed_init(){
    add_feed('tp_pub_rss', 'tp_pub_rss_feed_func');
    add_feed('tp_pub_bibtex', 'tp_pub_bibtex_feed_func');
    add_feed('tp_export', 'tp_export_feed_func');
}

/*************************/
/* Installer and Updater */
/*************************/

/**
 * Database update manager
 * @since 4.2.0
 */
function tp_db_update() {
   require_once('core/class-tables.php');
   require_once('core/class-update.php');
   TP_Update::force_update();
}

/**
 * Database synchronisation manager
 * @param string $table     authors or stud_meta
 * @since 5.0.0
 */
function tp_db_sync($table) {
    require_once('core/class-tables.php');
    require_once('core/class-update.php');
    if ( $table === 'authors' ) {
        TP_Update::fill_table_authors();
    }
    if ( $table === 'stud_meta' ) {
        TP_Update::fill_table_stud_meta();
    }
}

/**
 * teachPress plugin activation
 * @since 9.0.0
 */
function tp_deactivation () {
    TP_Publication_Sources_Page::uninstall_cron();
}


/**
 * teachPress plugin activation
 * @param boolean $network_wide
 * @since 4.0.0
 */
function tp_activation ( $network_wide ) {
    global $wpdb;
    // it's a network activation
    if ( $network_wide ) {
        $old_blog = $wpdb->blogid;
        // Get all blog ids
        $blogids = $wpdb->get_col($wpdb->prepare("SELECT `blog_id` FROM $wpdb->blogs"));
        foreach ($blogids as $blog_id) {
            switch_to_blog($blog_id);
            tp_install();
        }
        switch_to_blog($old_blog);
        return;
    }
    // it's a normal activation
    else {
        tp_install();
    }
}

/**
 * Activates the error reporting
 * @since 5.0.13
 */
function tp_activation_error_reporting () {
    file_put_contents(__DIR__.'/teachpress_activation_errors.html', ob_get_contents());
}

/**
 * Installation manager
 */
function tp_install() {
    require_once('core/class-tables.php');
    TP_Tables::create();
}

/**
 * Uninstallation manager
 */
function tp_uninstall() {
    require_once('core/class-tables.php');
    TP_Tables::remove();
}

/****************************/
/* tinyMCE plugin functions */
/****************************/

/**
 * Hooks functions for tinymce plugin into the correct filters
 * @since 5.0.0
 */
function tp_add_tinymce_button() {
    // the user need at least the edit_post capability (by default authors, editors, administrators)
    if ( !current_user_can( 'edit_posts' ) ) {
        return;
    }

    // the user need at least one of the teachpress capabilities
    if ( !current_user_can( 'use_teachpress' ) || !current_user_can( 'use_teachpress_courses' ) ) {
        return;
    }

    add_filter('mce_buttons', 'tp_register_tinymce_buttons');
    add_filter('mce_external_plugins', 'tp_register_tinymce_js');
}

/**
 * Adds a tinyMCE button for teachPress
 * @param array $buttons
 * @return array
 * @since 5.0.0
 */
function tp_register_tinymce_buttons ($buttons) {
    array_push($buttons, 'teachpress_tinymce');
    return $buttons;
}

/**
 * Adds a teachPress plugin to tinyMCE
 * @param array $plugins
 * @return array
 * @since 5.0.0
 */
function tp_register_tinymce_js ($plugins) {
    $plugins['teachpress_tinymce'] = plugins_url( 'js/tinymce-plugin.js', __FILE__ );
    return $plugins;
}

/*********************/
/* Loading functions */
/*********************/

/**
 * Admin interface script loader
 */
function tp_backend_scripts() {
    $version = get_tp_version();
    $page = isset($_GET['page']) ? $_GET['page'] : '';

    // Load scripts only, if it's a teachpress page
    if ( strpos($page, 'teachpress') === false && strpos($page, 'publications') === false ) {
        return;
    }

    wp_enqueue_style('teachpress-print-css', plugins_url( 'styles/print.css', __FILE__ ), false, $version, 'print');
    wp_enqueue_script('teachpress-standard', plugins_url( 'js/backend.js', __FILE__ ) );
    wp_enqueue_style('teachpress.css', plugins_url( 'styles/teachpress.css', __FILE__ ), false, $version);
    wp_enqueue_script('media-upload');
    add_thickbox();

    /* academicons v1.8.6 */
    if ( TEACHPRESS_LOAD_ACADEMICONS === true ) {
        wp_enqueue_style('academicons', plugins_url( 'includes/academicons/css/academicons.min.css', __FILE__ ) );
    }

    /* Font Awesome Free v5.10.1 */
    if (TEACHPRESS_LOAD_FONT_AWESOME === true) {
        wp_enqueue_style('font-awesome', plugins_url( 'includes/fontawesome/css/all.min.css', __FILE__ ) );
    }

    /* SlimSelect v1.27 */
    wp_enqueue_script('slim-select', plugins_url( 'includes/slim-select/slimselect.min.js', __FILE__ ) );
    wp_enqueue_style('slim-select.css', plugins_url( 'includes/slim-select/slimselect.min.css', __FILE__ ) );

    // Load jQuery + ui plugins + plupload
    wp_enqueue_script(array('jquery-ui-core', 'jquery-ui-datepicker', 'jquery-ui-resizable', 'jquery-ui-autocomplete', 'jquery-ui-sortable', 'jquery-ui-dialog', 'plupload'));
    wp_enqueue_style('teachpress-jquery-ui.css', plugins_url( 'styles/jquery.ui.css', __FILE__ ) );
    wp_enqueue_style('teachpress-jquery-ui-dialog.css', includes_url() . '/css/jquery-ui-dialog.min.css');

    // Languages for plugins
    $current_lang = ( version_compare( tp_get_wp_version() , '4.0', '>=') ) ? get_option('WPLANG') : WPLANG;
    $array_lang = array('de_DE','it_IT','es_ES', 'sk_SK');
    if ( in_array( $current_lang , $array_lang) ) {
        wp_enqueue_script('teachpress-datepicker-de', plugins_url( 'js/datepicker/jquery.ui.datepicker-' . $current_lang . '.js', __FILE__ ) );
    }
}

/**
 * Frontend script loader
 */
function tp_frontend_scripts() {
    $type_attr = current_theme_supports( 'html5', 'script' ) ? '' : ' type="text/javascript"';
    $version   = get_tp_version();

    /* start */
    echo PHP_EOL . '<!-- teachPress -->' . PHP_EOL;

    /* tp-frontend script */
    echo '<script' . $type_attr . ' src="' . plugins_url( 'js/frontend.js?ver=' . $version, __FILE__ ) . '"></script>' . PHP_EOL;

    /* tp-frontend style */
    $value = get_tp_option('stylesheet');
    if ($value == '1') {
        wp_enqueue_style('teachpress_front', plugins_url( 'styles/teachpress_front.css?ver=' . $version, __FILE__ ) );
    }

    /* altmetric support */
    if ( TEACHPRESS_ALTMETRIC_SUPPORT === true ) {
        echo '<script' . $type_attr . ' src="https://d1bxh8uas1mnw7.cloudfront.net/assets/embed.js"></script>' . PHP_EOL;
    }

    /* academicons v1.8.6 */
    if ( TEACHPRESS_LOAD_ACADEMICONS === true ) {
        wp_enqueue_style('academicons', plugins_url( 'includes/academicons/css/academicons.min.css', __FILE__ ) );
    }

    /* Font Awesome Free 5.10.1 */
    if (TEACHPRESS_LOAD_FONT_AWESOME === true) {
        wp_enqueue_style('font-awesome', plugins_url( 'includes/fontawesome/css/all.min.css', __FILE__ ) );
    }

    /* Dimensions Badge support */
    if ( TEACHPRESS_DIMENSIONS_SUPPORT === true ) {
        echo '<script async' . $type_attr . ' src="https://badge.dimensions.ai/badge.js" charset="utf-8"></script>' . PHP_EOL;
    }

    /* PlumX support */
    if ( TEACHPRESS_PLUMX_SUPPORT === true ) {
        echo '<script' . $type_attr . ' src="https://cdn.plu.mx/widget-popup.js"></script>' . PHP_EOL;
    }

    /* END */
    echo '<!-- END teachPress -->' . PHP_EOL;
}

/**
 * Load language files
 * @since 0.30
 */
function tp_language_support() {
    $domain = 'teachpress';
    $locale = apply_filters( 'plugin_locale', determine_locale(), $domain );
    $path = dirname( plugin_basename( __FILE__ ) ) . '/languages/';
    $mofile = WP_PLUGIN_DIR . '/' . $path . $domain . '-' . $locale . '.mo';

    // Load the plugins language files first instead of language files from WP languages directory
    if ( !load_textdomain($domain, $mofile) ) {
        load_plugin_textdomain($domain, false, $path);
    }
}

/**
 * Adds a link to the WordPress plugin menu
 * @param array $links
 * @param string $file
 * @return array
 */
function tp_plugin_link($links, $file){
    if ($file == plugin_basename(__FILE__)) {
        return array_merge($links, array( sprintf('<a href="options-general.php?page=teachpress/settings.php">%s</a>', esc_html__('Settings') ) ));
    }
    return $links;
}

/**
 * This calls the proper implementation for the update source endpoint.
 * @since 9.0.0
 */
function tp_rest_update_sources_hook() {
    include_once('admin/publication-sources.php');
    return new WP_REST_Response(tp_rest_update_sources());
}

/**
 * This function registers REST routes to call the REST endpoints.
 * @since 9.0.0
 */
function tp_rest_register_routes() {
    $result = register_rest_route( 'teachpress/v1', '/autopublish/update_all', array(
      'methods' => 'GET',
      'callback' => 'tp_rest_update_sources_hook',
      'permission_callback' => '__return_false', // change to __return_true to give access to all
    ), true );
}

// Register WordPress-Hooks
register_activation_hook( __FILE__, 'tp_activation');
register_deactivation_hook( __FILE__, 'tp_deactivation' );
add_action('init', 'tp_language_support');
add_action('init', 'tp_feed_init');
add_action('init', 'tp_register_all_publication_types');
add_action('init', 'tp_register_all_awards');
add_action('wp_ajax_teachpress', 'tp_ajax_callback');
add_action('wp_ajax_teachpressdocman', 'tp_ajax_doc_manager_callback');
add_action('admin_menu', 'tp_add_menu_settings');
add_action('wp_head', 'tp_frontend_scripts');
add_action('admin_init','tp_backend_scripts');
add_filter('plugin_action_links','tp_plugin_link', 10, 2);
add_action('wp_ajax_tp_document_upload', 'tp_handle_document_uploads' );
add_filter( 'screen_settings', 'tp_show_screen_options', 10, 2 );
add_action( 'rest_api_init', 'tp_rest_register_routes' );
add_action( TEACHPRESS_CRON_SOURCES_HOOK, 'TP_Publication_Sources_Page::tp_cron_exec' );

// Register tinyMCE Plugin
if ( version_compare( tp_get_wp_version() , '3.9', '>=') ) {
    add_action('admin_head', 'tp_add_tinymce_button');
    add_action('admin_head', 'tp_write_data_for_tinymce' );
 }

// Activation Error Reporting
if ( TEACHPRESS_ERROR_REPORTING === true ) {
    register_activation_hook( __FILE__, 'tp_activation_error_reporting' );
}

// register publication module
add_action('admin_menu', 'tp_add_menu');
add_action('widgets_init', function(){ register_widget( 'TP_Books_Widget' ); });
add_shortcode('tpcloud', 'tp_cloud_shortcode');
add_shortcode('tplist', 'tp_list_shortcode');
add_shortcode('tpsingle', 'tp_single_shortcode');
add_shortcode('tpbibtex', 'tp_bibtex_shortcode');
add_shortcode('tpabstract', 'tp_abstract_shortcode');
add_shortcode('tplinks', 'tp_links_shortcode');
add_shortcode('tpsearch', 'tp_search_shortcode');
add_shortcode('tpcite', 'tp_cite_shortcode');
add_shortcode('tpref','tp_ref_shortcode');