1 files changed, 149 insertions, 0 deletions
diff --git a/www/wiki/extensions/SemanticFormsSelect/src/ApiSemanticFormsSelectRequestProcessor.php b/www/wiki/extensions/SemanticFormsSelect/src/ApiSemanticFormsSelectRequestProcessor.php
new file mode 100644
index 00000000..18355536
--- /dev/null
+++ b/www/wiki/extensions/SemanticFormsSelect/src/ApiSemanticFormsSelectRequestProcessor.php
@@ -0,0 +1,149 @@
+<?php
+
+/**
+ * @license GNU GPL v2+
+ * @since 1.3
+ *
+ * @author Jason Zhang
+ * @author Toni Hermoso Pulido
+ * @author mwjames
+ */
+
+namespace SFS;
+
+use Parser;
+use SMWQueryProcessor as QueryProcessor;
+use InvalidArgumentException;
+use MWDebug;
+
+class ApiSemanticFormsSelectRequestProcessor {
+
+	/**
+	 * @var Parser
+	 */
+	private $parser;
+
+	/**
+	 * @var boolean
+	 */
+	private $debugFlag = false;
+
+	/**
+	 * @since 1.3
+	 *
+	 * @param Parser $parser
+	 */
+	public function __construct( Parser $parser ) {
+		$this->parser = $parser;
+	}
+
+	/**
+	 * @since 1.3
+	 *
+	 * @param boolean $debugFlag
+	 */
+	public function setDebugFlag( $debugFlag ) {
+		$this->debugFlag = $debugFlag;
+	}
+
+	/**
+	 * @since 1.3
+	 *
+	 * @param array $parameters
+	 *
+	 * @return string
+	 */
+	public function getJsonDecodedResultValuesForRequestParameters( array $parameters ) {
+
+		if ( !isset( $parameters['query'] ) || !isset( $parameters['sep'] ) ) {
+			throw new InvalidArgumentException( 'Missing an query parameter' );
+		}
+
+		$this->parser->firstCallInit();
+		$json = [];
+
+		if ( isset( $parameters['approach'] ) && $parameters['approach'] == 'smw' ) {
+			$json = $this->doProcessQueryFor( $parameters['query'], $parameters['sep'] );
+		} else {
+			$json = $this->doProcessFunctionFor( $parameters['query'], $parameters['sep'] );
+		}
+
+		// I have no idea why we first encode and and then decode here??
+
+		return json_decode( $json );
+	}
+
+	private function doProcessQueryFor( $querystr, $sep = "," ) {
+
+		$querystr = str_replace(
+			[ "&lt;", "&gt;", "sep=;" ],
+			[ "<", ">", "sep={$sep};" ],
+			$querystr
+		);
+
+		$rawparams = explode( ";", $querystr );
+		$f = str_replace( ";", "|", $rawparams[0] );
+
+		$rawparams[0] = $this->parser->replaceVariables( $f );
+
+		if ( $this->debugFlag ) {
+			error_log( implode( "|", $rawparams ) );
+		}
+
+		
+		list( $query, $params ) = QueryProcessor::getQueryAndParamsFromFunctionParams( $rawparams, SMW_OUTPUT_WIKI, QueryProcessor::INLINE_QUERY, false );
+			
+		$result = QueryProcessor::getResultFromQuery( $query, $params, SMW_OUTPUT_WIKI, QueryProcessor::INLINE_QUERY );
+		
+		
+		$values = $this->getFormattedValuesFrom( $sep, $result );
+
+		return json_encode( [
+			"values" => $values,
+			"count"  => count( $values )
+		] );
+	}
+
+	private function doProcessFunctionFor( $query, $sep = "," ) {
+
+		$query = str_replace(
+			[ "&lt;", "&gt;", "sep=;" ],
+			[ "<", ">", "sep={$sep};" ],
+			$query
+		);
+
+		$f = str_replace( ";", "|", $query );
+
+		if ( $this->debugFlag ) {
+			error_log( $f );
+		}
+
+		$values = $this->getFormattedValuesFrom(
+			$sep,
+			$this->parser->replaceVariables( $f )
+		);
+
+		return json_encode( [
+			"values" => $values,
+			"count"  => count( $values )
+		] );
+	}
+
+	private function getFormattedValuesFrom( $sep, $values ) {
+
+		if ( strpos( $values, $sep ) === false ) {
+			return [ $values ];
+		}
+
+		$values = explode( $sep, $values );
+		$values = array_map( "trim", $values );
+		$values = array_unique( $values );
+
+		// TODO: sorting here will destroy any sort defined in the query, e.g. in case sorting for labels (instead of mainlable)
+		//sort( $values );
+		array_unshift( $values, "" );
+
+		return $values;
+	}
+
+}