oldwpplugin.php

<?php 
namespace Medium;

class Citation {
	const SHORTCODE = 'medium-editor';
	private $url;

	public function __construct() 
	{
		ini_set( 'display_errors', 1 );
		error_reporting(1);
		$this->url = plugins_url( '', realpath( __DIR__ . '/../textbox-citation.php' ) );
		//$this->url = plugins_url( '', realpath( __DIR__ . '/../textbox-citation.php' ) );
		$this->actions();
	}

	public function actions() 
	{
		add_action( 'admin_menu', function() {
			add_submenu_page( 'options-general.php', 'Textbox Citation', 'Textbox Citation', 'manage_options', 'textbox-citation', [ $this, 'citation_menu' ] );
		});
		add_action( 'wp_enqueue_scripts', function() {
			wp_register_script( 'citation', $this->url . '/js/index.js', [ 'jquery' ] );
			wp_localize_script( 'citation', 'CITATION', [ 'nonce' => wp_create_nonce( '**B15Fa17K' ), 'ajax' => admin_url( 'admin-ajax.php' ) ] );
			wp_enqueue_script( 'citation' );
			wp_register_script( 'medium-editor2', '//cdn.jsdelivr.net/npm/medium-editor@5.23.2/dist/js/medium-editor.min.js' );
			wp_register_script( 'medium-insert2', $this->url . '/js/medium-insert.js', [ 'medium-editor2' ] );
			wp_register_style( 'medium-editor2', '//cdn.jsdelivr.net/npm/medium-editor@5.23.2/dist/css/medium-editor.min.css' );
		});

		add_action( 'wp_ajax_get_citation', [ $this, 'citation_getdata' ] );
		add_action( 'wp_ajax_nopriv_get_citation', [ $this, 'citation_getdata' ] );
		add_shortcode( self::SHORTCODE, [ $this, 'the_shortcode' ] );
	}

	function citation_getdata() {
		header( 'Content-Type: application/json' );
		if( !empty( $_POST[ 'data' ] ) && wp_verify_nonce( $_POST[ 'nonce' ], '**B15Fa17K' ) ) {
			$ch = curl_init();
			$citation = get_option( 'citation' );

			if( $_POST[ 'word_boundary' ] == 'false' ) {
				curl_setopt_array( $ch, [
					CURLOPT_URL => $citation[ 'api' ] . '?' . http_build_query([ 'source_type' => 'url', 'url' => $_POST[ 'data' ] ]),
					CURLOPT_RETURNTRANSFER => true,
					CURLOPT_FOLLOWLOCATION => 1
				]);
			} else {
				curl_setopt_array( $ch, [
					CURLOPT_URL => 'http://167.99.173.193/cgi-bin/search_book4.py?title=' . urlencode( $_POST[ 'data' ] ),
					CURLOPT_RETURNTRANSFER => true,
					CURLOPT_FOLLOWLOCATION => 1
				]);
			}

			$exec = curl_exec( $ch );

			if( !curl_errno( $ch ) ) {
				$exec = json_decode( $exec );
				if( $exec->result == 'Success' ) {
					$return = [];
					$return[ 'status' ] = true;

					if( $_POST[ 'word_boundary' ] == 'true' ) {
						$return[ 'citation' ] = $this->citation_replace( '([firstname_author1] & [firstname_author2], [year])', $exec );
						$return[ 'reference' ] = $this->citation_replace( '[firstname_author1], [lastname_author1.], & [firstname_author2], [lastname_author2.] ([year]) ' . ucwords( $_POST[ 'data' ] ) . '. [city]: [publisher]', $exec );
					} elseif( empty( $exec->authors ) ) {
						$return[ 'citation' ] = $this->citation_replace( '([domain_name], [year])', $exec );
						$return[ 'reference' ] = $this->citation_replace( '[domain_name]. ([year]). <em>[title]</em>. [online] Available at: [url] [Accessed [date].', $exec );
					} elseif( !empty( $exec->journal_name ) ) {
							if( count( $exec->authors ) == 3 ) {
								$return[ 'citation' ] = $this->citation_replace( '([lastname_author1], [lastname_author2] and [lastname_author3], [year])', $exec );
							} elseif( count( $exec->authors ) == 2 ) {
								$return[ 'citation' ] = $this->citation_replace( '([lastname_author1] and [lastname_author2], [year])', $exec );
							} elseif( count( $exec->authors ) == 1 ) {
								$return[ 'citation' ] = $this->citation_replace( '([lastname_author1], [year])', $exec );
							} else {
								$return[ 'citation' ] = $this->citation_replace( '([lastname_author1] et al, [year])', $exec );
							}

						$return[ 'reference' ] = $this->citation_replace( $citation[ 'reference' ], $exec );
					} else {
						$return[ 'citation' ] = $this->citation_replace( $citation[ 'citation' ], $exec );
					
						$return[ 'reference' ] = $this->citation_replace( '[lastname_author1], [firstname_author1.] ([year]). [title]. Available at: [url] [Accessed [date]].', $exec );
					}

					echo json_encode( $return ); die;
				}
			}
			echo json_encode([ 'status' => false ]);
			die;
		}
	}

	function citation_replace( $content, $data ) {
		$date = strtotime( $data->date );
		$authors = !empty( $data->author ) ? explode( ';', $data->author ) : $data->authors;
		$authors = array_map( 'trim', $authors );

		if( !empty( $data->journal_name ) ) 
			sort( $authors );		

		if( !empty( $authors[ 0 ] ) ) {
			list( $firstname, $lastname ) = explode( ' ', $authors[ 0 ] );
			$content = str_ireplace( '[firstname_author1]', $firstname, $content );
			$content = str_ireplace( '[lastname_author1]', $lastname, $content );
			$content = str_ireplace( '[firstname_author1.]', strtoupper( $firstname[ 0 ] ) . '.', $content );
			$content = str_ireplace( '[lastname_author1.]', strtoupper( $lastname[ 0 ] ) . '.', $content );

			unset( $firstname, $lastname );
		}
		else {
			$content = preg_replace( '/&?\s?\[(firstname|lastname)_author1[\.]?\][\s]?[,]?/', '', $content );
		}

		if( !empty( $authors[ 1 ] ) ) {
			list( $firstname, $lastname ) = explode( ' ', $authors[ 1 ] );
			$content = str_ireplace( '[firstname_author2]', $firstname, $content );
			$content = str_ireplace( '[lastname_author2]', $lastname, $content );
			$content = str_ireplace( '[firstname_author2.]', strtoupper( $firstname[ 0 ] ) . '.', $content );
			$content = str_ireplace( '[lastname_author2.]', strtoupper( $lastname[ 0 ] ) . '.', $content );

			unset( $firstname, $lastname );
		}
		else {
			$content = preg_replace( '/&?\s?\[(firstname|lastname)_author2[\.]?\][\s]?[,]?/', '', $content );
		}

		if( !empty( $authors[ 2 ] ) ) {
			list( $firstname, $lastname ) = explode( ' ', $authors[ 2 ] );
			$content = str_ireplace( '[firstname_author3]', $firstname, $content );
			$content = str_ireplace( '[lastname_author3]', $lastname, $content );
			$content = str_ireplace( '[firstname_author3.]', strtoupper( $firstname[ 0 ] ) . '.', $content );
			$content = str_ireplace( '[lastname_author3.]', strtoupper( $lastname[ 0 ] ) . '.', $content );

			unset( $firstname, $lastname );
		}
		else {
			$content = preg_replace( '/&?\s?\[(firstname|lastname)_author3[\.]?\][\s]?[,]?/', '', $content );
		}

	if( !empty( $authors[ 3 ] ) ) {
		list( $firstname, $lastname ) = explode( ' ', $authors[ 3 ] );
		$content = str_ireplace( '[firstname_author4]', $firstname, $content );
		$content = str_ireplace( '[lastname_author4]', $lastname, $content );
		$content = str_ireplace( '[firstname_author4.]', strtoupper( $firstname[ 0 ] ) . '.', $content );
		$content = str_ireplace( '[lastname_author4.]', strtoupper( $lastname[ 0 ] ) . '.', $content );

		unset( $firstname, $lastname );
	}
	else {
		$content = preg_replace( '/&?\s?\[(firstname|lastname)_author4[\.]?\][\s]?[,]?/', '', $content );
	}

	if( !empty( $authors[ 4 ] ) ) {
		list( $firstname, $lastname ) = explode( ' ', $authors[ 4 ] );
		$content = str_ireplace( '[firstname_author5]', $firstname, $content );
		$content = str_ireplace( '[lastname_author5]', $lastname, $content );
		$content = str_ireplace( '[firstname_author5.]', strtoupper( $firstname[ 0 ] ) . '.', $content );
		$content = str_ireplace( '[lastname_author5.]', strtoupper( $lastname[ 0 ] ) . '.', $content );

		unset( $firstname, $lastname );
	}
	else {
		$content = preg_replace( '/&?\s?\[(firstname|lastname)_author5[\.]?\][\s]?[,]?/', '', $content );
	}

	if( !empty( $authors[ 5 ] ) ) {
		list( $firstname, $lastname ) = explode( ' ', $authors[ 5 ] );
		$content = str_ireplace( '[firstname_author6]', $firstname, $content );
		$content = str_ireplace( '[lastname_author6]', $lastname, $content );
		$content = str_ireplace( '[firstname_author6.]', strtoupper( $firstname[ 0 ] ) . '.', $content );
		$content = str_ireplace( '[lastname_author6.]', strtoupper( $lastname[ 0 ] ) . '.', $content );

		unset( $firstname, $lastname );
	}
	else {
		$content = preg_replace( '/&?\s?\[(firstname|lastname)_author6[\.]?\][\s]?[,]?/', '', $content );
	}

	if( !empty( $authors[ 6 ] ) ) {
		list( $firstname, $lastname ) = explode( ' ', $authors[ 6 ] );
		$content = str_ireplace( '[firstname_author7]', $firstname, $content );
		$content = str_ireplace( '[lastname_author7]', $lastname, $content );
		$content = str_ireplace( '[firstname_author7.]', strtoupper( $firstname[ 0 ] ) . '.', $content );
		$content = str_ireplace( '[lastname_author7.]', strtoupper( $lastname[ 0 ] ) . '.', $content );

		unset( $firstname, $lastname );
	}
	else {
		$content = preg_replace( '/&?\s?\[(firstname|lastname)_author7[\.]?\][\s]?[,]?/', '', $content );
	}

	if( !empty( $authors[ 7 ] ) ) {
		list( $firstname, $lastname ) = explode( ' ', $authors[ 7 ] );
		$content = str_ireplace( '[firstname_author8]', $firstname, $content );
		$content = str_ireplace( '[lastname_author8]', $lastname, $content );
		$content = str_ireplace( '[firstname_author8.]', strtoupper( $firstname[ 0 ] ) . '.', $content );
		$content = str_ireplace( '[lastname_author8.]', strtoupper( $lastname[ 0 ] ) . '.', $content );

		unset( $firstname, $lastname );
	}
	else {
		$content = preg_replace( '/&?\s?\[(firstname|lastname)_author8[\.]?\][\s]?[,]?/', '', $content );
	}

	if( !empty( $authors[ 8 ] ) ) {
		list( $firstname, $lastname ) = explode( ' ', $authors[ 8 ] );
		$content = str_ireplace( '[firstname_author9]', $firstname, $content );
		$content = str_ireplace( '[lastname_author9]', $lastname, $content );
		$content = str_ireplace( '[firstname_author9.]', strtoupper( $firstname[ 0 ] ) . '.', $content );
		$content = str_ireplace( '[lastname_author9.]', strtoupper( $lastname[ 0 ] ) . '.', $content );

		unset( $firstname, $lastname );
	}
	else {
		$content = preg_replace( '/&?\s?\[(firstname|lastname)_author9[\.]?\][\s]?[,]?/', '', $content );
	}

		if( !empty( $data->journal_name ) ) {
			$content = str_ireplace( '[journal_name]', $data->journal_name, $content );
		}
		else {
			$content = preg_replace( '/\[journal_name\][\s]?[,]?/', '', $content );
		}

		if( !empty( $data->issue ) ) {
			$content = str_ireplace( '[issue]', $data->issue, $content );
		}
		else {
			$content = preg_replace( '/[\(]?\[issue\][\)]?[\.]?/', '', $content );
		}

		
		$content = str_ireplace( '[volume]', ( !empty( $data->volume ) ? $data->volume : '' ), $content );

		/*$content = str_ireplace( '[firstname]', $firstname, $content );
		$content = str_ireplace( '[lastname]', $lastname, $content );
		$content = str_ireplace( '[firstname.]', strtoupper( $firstname[ 0 ] ) . '.', $content );
		$content = str_ireplace( '[lastname.]', strtoupper( $lastname[ 0 ] ) . '.', $content );*/
		$content = str_ireplace( '[year]', ( !empty( $data->publish_year ) ? $data->publish_year : date( 'Y', $date ) ), $content );
		$content = str_ireplace( '[title]', $data->title, $content );
		$content = str_ireplace( '[domain_name]', ucwords( parse_url( $data->url, PHP_URL_HOST ) ), $content );
		$content = str_ireplace( '[url]', '<a href="' . $data->url . '" data-ref-url>' . $data->url . '</a>', $content );
		$content = str_ireplace( '[date]', date( 'd M. Y' ), $content );
		if( !empty( $data->city ) ) 
			$content = str_ireplace( '[city]', trim( $data->city ), $content );

		if( !empty( $data->publisher ) ) 
			$content = str_ireplace( '[publisher]', $data->publisher, $content );

		return $content;
	}

	public function the_shortcode( $atts ) 
	{
		/*wp_enqueue_style( 'medium-editor2' );
		wp_enqueue_script( 'medium-insert2' );*/

		$atts = shortcode_atts( [
			'height' => 300
		], $atts );	
		return '<div id="medium-editor2" class="sap-editable-area" style="height: ' . $atts[ 'height' ] . 'px; padding : 20px 10px;"></div>';
	}

	function citation_menu() {
		$data = get_option( 'citation' );
		if( isset( $_POST[ 'citation' ] ) ) {
			update_option( 'citation', $_POST[ 'citation' ] );
			$data = $_POST[ 'citation' ];
			$updated = true;
		}
		?>
		<div class="wrap">
			<h1><?php echo get_admin_page_title();?></h1>

			<?php if( !empty( $updated ) ):?>
				<div class="notice notice-success is-dismissible">
					<p><?php _e( 'Saved!' ); ?></p>
				</div>
			<?php endif;?>

			<form action="" method="post">
				<?php wp_nonce_field( -1, 'citation_nonce' );?>
				<div>
					<label>API URL:</label><br />
					<input type="url" name="citation[api]" value="<?php echo @$data[ 'api' ]?>" />
				</div>
				<div>
					<label>Citation Format:</label><br />
					<textarea name="citation[citation]"><?php echo @$data[ 'citation' ]?></textarea><br />
				</div>
				<div>
					<label>Reference Format:</label><br />
					<textarea name="citation[reference]"><?php echo @$data[ 'reference' ]?></textarea><br />
				</div>
				<div>
					Variables:<br />
					<span>[firstname] - First name<br />[lastname] - Last name<br />[lastname.] - Last name abbr.<br />[firstname.] - First name abbr.<br />[year] - Year</span>
				</div>
				<?php submit_button();?>
			</form>
		</div>
		<?php 
	}
}