add USE_FILTER_DESCRIPTIONS option

src/reducers/validate/validators.js

@@ -29,10 +29,30 @@ const isLeaf = node => (Object.keys(node.children).length === 0)
 const isDuplicate = (node, set) => { return (set.has(node.key)) }
 
 /*
-* Traverse a filter tree and check its duplicates
+* Traverse a filter tree and check its duplicates. Also recompose as
+* description if `features.USE_FILTER_DESCRIPTIONS` is true.
 */
-function validateTree (node, parent, set, duplicates) {
-  if (!Array.isArray(node) || !node.length) {
+function validateFilterTree (node, parent, set, duplicates, hasFilterDescriptions) {
+  if (hasFilterDescriptions) {
+    if (node.key === '_root') {
+      node.isDescription = true // setting first set of nodes to values
+    } else if (!parent.isDescription) {
+      node.isDescription = true
+    } else {
+      node.isDescription = false
+    }
+
+    if (node.isDescription && node.key !== 'root') {
+      parent.description = node.key
+      parent.children = node.children
+      delete parent.isDescription
+    }
+    if (isLeaf(node)) {
+      delete parent.isDescription
+    }
+  }
+
+  if (typeof (node) !== 'object' || typeof (node.children) !== 'object') {
     return
   }
   // If it's a leaf, check that it's not duplicate
@@ -49,7 +69,7 @@ function validateTree (node, parent, set, duplicates) {
   } else {
     // If it's not a leaf, simply keep going
     Object.values(node.children).forEach((childNode) => {
-      validateTree(childNode, node, set, duplicates)
+      validateFilterTree(childNode, node, set, duplicates, hasFilterDescriptions)
     })
   }
 }
@@ -57,7 +77,7 @@ function validateTree (node, parent, set, duplicates) {
 /*
 * Validate domain schema
 */
-export function validateDomain (domain) {
+export function validateDomain (domain, features) {
   const sanitizedDomain = {
     events: [],
     categories: [],
@@ -143,7 +163,7 @@ export function validateDomain (domain) {
   // Validate uniqueness of filters
   const filterSet = new Set([])
   const duplicateFilters = []
-  validateTree(domain.filters, {}, filterSet, duplicateFilters)
+  validateFilterTree(domain.filters, {}, filterSet, duplicateFilters, features.USE_FILTER_DESCRIPTIONS)
 
   // Duplicated filters
   if (duplicateFilters.length > 0) {