fix: unable-to-change-status-to-complete-if-observations-contain-french-characters

Author: mjabascal10

backend/src/main/java/com/park/utmstack/service/impl/UtmAlertServiceImpl.java

@@ -21,6 +21,7 @@
 import com.park.utmstack.service.elasticsearch.ElasticsearchService;
 import com.park.utmstack.service.elasticsearch.SearchUtil;
 import com.park.utmstack.service.soc_ai.SocAIService;
+import com.park.utmstack.util.UnicodeReplacer;
 import com.park.utmstack.util.enums.AlertStatus;
 import com.park.utmstack.util.events.RulesEvaluationEndEvent;
 import com.park.utmstack.util.exceptions.DashboardOverviewException;
@@ -187,6 +188,8 @@ public void updateStatus(List<String> alertIds, int status, String statusObserva
             String script = String.format(ruleScript, status,
                     AlertStatus.getByCode(status).getName(), StringEscapeUtils.escapeJava(statusObservation));
 
+            script = UnicodeReplacer.replaceUnicode(script);
+
             elasticsearchService.updateByQuery(SearchUtil.toQuery(filters),
                     Constants.SYS_INDEX_PATTERN.get(SystemIndexPattern.ALERTS), script);
         } catch (Exception e) {

backend/src/main/java/com/park/utmstack/util/UnicodeReplacer.java

@@ -0,0 +1,32 @@
+package com.park.utmstack.util;
+
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+public class UnicodeReplacer {
+    // Pattern to detect Unicode sequences like \u00E9
+    private static final Pattern UNICODE_PATTERN = Pattern.compile("\\\\u([0-9A-Fa-f]{4})");
+
+    /**
+     * Method to replace Unicode sequences with their corresponding characters.
+     *
+     * @param input The text containing Unicode sequences.
+     * @return The text with Unicode sequences replaced by their actual characters.
+     */
+    public static String replaceUnicode(String input) {
+        Matcher matcher = UNICODE_PATTERN.matcher(input);
+        StringBuffer result = new StringBuffer();
+
+        while (matcher.find()) {
+            // Converts the Unicode sequence to its equivalent character
+            String unicode = matcher.group(1);
+            char character = (char) Integer.parseInt(unicode, 16);
+            matcher.appendReplacement(result, String.valueOf(character));
+        }
+
+        matcher.appendTail(result);
+        return result.toString();
+    }
+
+}
+