Sindbad~EG File Manager

<?php
/**
 * MantisBT - A PHP based bugtracking system
 *
 * MantisBT 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.
 *
 * MantisBT 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 MantisBT.  If not, see <http://www.gnu.org/licenses/>.
 *
 * @copyright Copyright 2002  MantisBT Team - mantisbt-dev@lists.sourceforge.net
 */

/**
 * Mantis Graph plugin
 */
class MantisGraphPlugin extends MantisPlugin  {

	/**
	 * A method that populates the plugin information and minimum requirements.
	 * @return void
	 */
	function register() {
		$this->name = lang_get( 'plugin_graph_title' );
		$this->description = lang_get( 'plugin_graph_description' );
		$this->page = '';

		$this->version = MANTIS_VERSION;
		$this->requires = array(
			'MantisCore' => '2.0.0',
		);

		$this->author = 'MantisBT Team';
		$this->contact = 'mantisbt-dev@lists.sourceforge.net';
		$this->url = 'http://www.mantisbt.org';
	}

	/**
	 * Default plugin configuration.
	 * @return array
	 */
	function config() {
		return array();
	}

	/**
	 * plugin hooks
	 * @return array
	 */
	function hooks() {
		$t_hooks = array(
			'EVENT_LAYOUT_RESOURCES' => 'resources',
			'EVENT_CORE_HEADERS' => 'csp_headers',
			'EVENT_SUBMENU_SUMMARY' => 'summary_submenu',
			'EVENT_MENU_FILTER' => 'graph_filter_menu'
		);
		return $t_hooks;
	}

	/**
	 * Add Content-Security-Policy directives that are needed to load scripts for CDN.
	 * @return void
	 */
	function csp_headers() {
		if ( config_get_global( 'cdn_enabled' ) == ON ) {
			http_csp_add( 'script-src', 'https://cdnjs.cloudflare.com' );
		}
	}

	/**
	 * generate graph filter menu
	 * @return array
	 */
	function graph_filter_menu() {
		if( access_has_project_level( config_get( 'view_summary_threshold' ) ) ) {
			return array( '<a class="btn btn-sm btn-primary btn-white btn-round" href="' .
				plugin_page( 'issues_trend_page.php' ) . '">' . plugin_lang_get( 'issue_trends_link' ) . '</a>', );
		} else {
			return '';
		}
	}

	/**
	 * Include javascript files for chart.js
	 * @return void
	 */
	function resources() {
		if ( config_get_global( 'cdn_enabled' ) == ON ) {
			html_javascript_cdn_link( 'https://cdnjs.cloudflare.com/ajax/libs/Chart.js/' . CHARTJS_VERSION . '/Chart.min.js', CHARTJS_HASH );
			html_javascript_cdn_link( 'https://cdnjs.cloudflare.com/ajax/libs/Chart.js/' . CHARTJS_VERSION . '/Chart.bundle.min.js', CHARTJSBUNDLE_HASH );
		} else {
			echo '<script src="' . plugin_file( 'chart-' . CHARTJS_VERSION . '.min.js' ) . '"></script>';
			echo '<script src="' . plugin_file( 'chart.bundle-' . CHARTJS_VERSION . '.min.js' ) . '"></script>';
		}
		echo '<script src="' . plugin_file( "MantisGraph.js" ) . '"></script>';
	}

	/**
	 * generate summary submenu
	 * @return array
	 */
	function summary_submenu() {
		return array(
            '<a class="btn btn-sm btn-primary btn-white" href="' . helper_mantis_url( 'summary_page.php' ) . '"> <i class="fa fa-table"></i> ' . plugin_lang_get( 'synthesis_link' ) . '</a>',
			'<a class="btn btn-sm btn-primary btn-white" href="' . plugin_page( 'developer_graph.php' ) . '"> <i class="fa fa-bar-chart"></i> ' . lang_get( 'by_developer' ) . '</a>',
			'<a class="btn btn-sm btn-primary btn-white" href="' . plugin_page( 'reporter_graph.php' ) . '"> <i class="fa fa-bar-chart"></i> ' . lang_get( 'by_reporter' ) . '</a>',
			'<a class="btn btn-sm btn-primary btn-white" href="' . plugin_page( 'status_graph.php' ) . '"> <i class="fa fa-bar-chart"></i> ' . plugin_lang_get( 'status_link' ) . '</a>',
			'<a class="btn btn-sm btn-primary btn-white" href="' . plugin_page( 'resolution_graph.php' ) . '"> <i class="fa fa-bar-chart"></i> ' . plugin_lang_get( 'resolution_link' ) . '</a>',
			'<a class="btn btn-sm btn-primary btn-white" href="' . plugin_page( 'priority_graph.php' ) . '"> <i class="fa fa-bar-chart"></i> ' . plugin_lang_get( 'priority_link' ) . '</a>',
			'<a class="btn btn-sm btn-primary btn-white" href="' . plugin_page( 'severity_graph.php' ) . '"> <i class="fa fa-bar-chart"></i> ' . plugin_lang_get( 'severity_link' ) . '</a>',
			'<a class="btn btn-sm btn-primary btn-white" href="' . plugin_page( 'category_graph.php' ) . '"> <i class="fa fa-bar-chart"></i> ' . plugin_lang_get( 'category_link' ) . '</a>',
			'<a class="btn btn-sm btn-primary btn-white" href="' . plugin_page( 'issues_trend_graph.php' ) . '"> <i class="fa fa-bar-chart"></i> ' . plugin_lang_get( 'issue_trends_link' ) . '</a>',
		);
	}
}