Put add funcs to fields in one reducer function

ui/spec/data_explorer/reducers/queryConfigSpec.js

@@ -216,14 +216,14 @@ describe('Chronograf.Reducers.DataExplorer.queryConfigs', () => {
 
       const nextState = reducer(initialState, action)
 
-      console.log('foo: ', JSON.stringify(nextState[queryId].fields, null, 2))
       expect(nextState[queryId].fields).to.deep.equal([
-        {name: 'fn1', type: 'func', args: [f2], alias: `fn1_${f2.name}`},
         {name: 'fn3', type: 'func', args: [f1], alias: `fn3_${f1.name}`},
         {name: 'fn4', type: 'func', args: [f1], alias: `fn4_${f1.name}`},
+        {name: 'fn1', type: 'func', args: [f2], alias: `fn1_${f2.name}`},
       ])
     })
 
+    // TODO: start here 10/10/2017
     it('removes all functions and group by time when one field has no funcs applied', () => {
       const initialState = {
         [queryId]: {

ui/src/utils/queryTransitions.js

@@ -133,39 +133,54 @@ export function applyFuncsToField(
   {preventAutoGroupBy = false, isKapacitorRule = false} = {}
 ) {
   const shouldRemoveFuncs = funcs && funcs.length === 0
-  let nextFields = query.fields.map(f => {
+  const nextFields = query.fields.reduce((acc, f) => {
     // If one field has no funcs, all fields must have no funcs
     if (shouldRemoveFuncs) {
-      return f.args.filter(a => a.type === 'field')
+      return [...acc, f.args.filter(a => a.type === 'field')]
     }
 
     // If there is a func applied to only one field, add it to the other fields
     if (f.type === 'field') {
-      return funcs.map(func => {
+      return [
+        ...acc,
+        funcs.map(func => {
           return {
             name: func.name,
             type: func.type,
             args: [{name: f.name, type: 'field'}],
             alias: `${name}_${f.name}`,
           }
-      })
+        }),
+      ]
     }
 
-    return f
-  })
+    const isFieldToChange = f.args.find(a => a.name === field.name)
 
-  if (!shouldRemoveFuncs) {
-    nextFields = query.fields.filter(f =>
-      f.args.find(a => a.name !== field.name)
-    )
-
-    const modifiedFields = funcs.map(func => {
-      return {...func, args: [field], alias: `${func.name}_${field.name}`}
-    })
-
-    nextFields = [...nextFields, ...modifiedFields]
+    // Apply new funcs to field
+    if (isFieldToChange) {
+      const newFuncs = funcs.reduce((acc2, func) => {
+        const isDup = acc.find(a => a.name === func.name)
+        if (isDup) {
+          return acc2
         }
 
+        return [
+          ...acc2,
+          {
+            ...func,
+            args: [field],
+            alias: `${func.name}_${field.name}`,
+          },
+        ]
+      }, [])
+
+      // console.log('newFuncs: ', newFuncs)
+      return [...acc, ...newFuncs]
+    }
+
+    return [...acc, f]
+  }, [])
+
   const defaultGroupBy = preventAutoGroupBy
     ? DEFAULT_DATA_EXPLORER_GROUP_BY_INTERVAL
     : DEFAULT_DASHBOARD_GROUP_BY_INTERVAL