Done ticket GEPAFINBE-162

src/main/java/net/gepafin/tendermanagement/util/Utils.java

@@ -11,6 +11,7 @@ import java.text.SimpleDateFormat;
 import java.util.*;
 import java.util.function.Consumer;
 import java.util.function.Supplier;
+import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 import java.util.stream.Collectors;
 
@@ -27,6 +28,8 @@ import jakarta.servlet.http.HttpServletRequest;
 import net.gepafin.tendermanagement.config.Translator;
 import net.gepafin.tendermanagement.constants.GepafinConstant;
 import net.gepafin.tendermanagement.model.request.GlobalFilters;
+import net.objecthunter.exp4j.Expression;
+import net.objecthunter.exp4j.ExpressionBuilder;
 import org.apache.commons.collections4.MapUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -54,6 +57,9 @@ import javax.crypto.Cipher;
 import javax.crypto.Mac;
 import javax.crypto.spec.IvParameterSpec;
 import javax.crypto.spec.SecretKeySpec;
+import javax.script.ScriptEngine;
+import javax.script.ScriptEngineManager;
+import javax.script.ScriptException;
 
 import static org.apache.commons.lang3.StringUtils.isEmpty;
 
@@ -753,6 +759,23 @@ public class Utils {
 	private static Map<String, Object> defaultErrorResponse() {
 		return Collections.singletonMap("message", Translator.toLocale(GepafinConstant.INVALID_VATNUMBER));
 	}
+	public static List<String> extractValues(String input) {
+		List<String> extractedValues = new ArrayList<>();
+		Pattern pattern = Pattern.compile("\\{(.*?)\\}"); // Regex to match {value}
+		Matcher matcher = pattern.matcher(input);
 
-
+		while (matcher.find()) {
+			extractedValues.add(matcher.group(1)); // Extract value inside {}
+		}
+		return extractedValues;
+	}
+	public static double evaluateExpression(String expression) {
+		try {
+			Expression exp = new ExpressionBuilder(expression).build();
+			return exp.evaluate();
+		} catch (Exception e) {
+			e.printStackTrace();
+			return Double.NaN;  // Return NaN if the expression is invalid
+		}
+	}
 }