Add rule language filtering support

Author: eric-forte-elastic

parseRuleData.ts

@@ -138,7 +138,13 @@ async function getPrebuiltDetectionRules(
     // Use default tags if ruleContent.rule.tags does not exist
     const tags = ruleContent.rule.tags || ["Hunt Type: Hunt"];
     setDefault(ruleContent.rule, 'tags', ["Hunt Type: Hunt"]);
-  
+
+    // Add a tag based on the language
+    const language = ruleContent.rule?.language;
+    if (language) {
+      tags.push(`Language: ${language}`);
+    }
+
     // Add creation_date and updated_date if they do not exist
     const defaultDate = new Date(0).toISOString();
     setDefault(ruleContent.metadata, 'creation_date', defaultDate);

src/components/home/home_hero.tsx

@@ -159,6 +159,13 @@ const HomeHero: FunctionComponent<RuleFilterProps> = ({
             tagFilter={tagFilter}
             onTagChange={onTagChange}
           />
+          <RuleFilter
+            displayName="Rule Languages"
+            icon="menu"
+            tagList={tagSummaries.filter(x => x.tag_type == 'Language')}
+            tagFilter={tagFilter}
+            onTagChange={onTagChange}
+          />
         </EuiFlexGrid>
       </EuiFlexItem>
     </EuiFlexGroup>

src/lib/ruledata.ts

@@ -27,4 +27,8 @@ export const ruleFilterTypeMap = {
     color: 'hollow',
     icon: 'layers',
   },
+  Language: {
+    color: 'default',
+    icon: 'menu',
+  },
 };