Add logic for tracking the currently selected pilot

src/app/reducers/rootReducer.js

@@ -1,11 +1,13 @@
 import {combineReducers} from "redux";
 
 import entitiesReducer from "./entitiesReducer";
+import pilotsReducer from "features/pilots/pilotsReducer";
 import tabReducer from "features/tabs/tabsReducer";
 import unitInfoReducer from "features/unitInfo/unitInfoReducer";
 
 const rootReducer = combineReducers({
     entities : entitiesReducer,
+    pilots : pilotsReducer,
     unitInfo : unitInfoReducer,
     tabs : tabReducer,
 });

src/features/pilots/pilotsActions.js

@@ -0,0 +1,8 @@
+import {PILOT_SELECT} from "./pilotsConstants";
+
+export function selectPilot(pilotID) {
+    return {
+        type : PILOT_SELECT,
+        payload : {currentPilot : pilotID},
+    };
+}

src/features/pilots/pilotsConstants.js

@@ -0,0 +1 @@
+export const PILOT_SELECT = "PILOT_SELECT";

src/features/pilots/pilotsReducer.js

@@ -0,0 +1,25 @@
+import {createReducer} from "common/utils/reducerUtils";
+
+import {PILOT_SELECT} from "./pilotsConstants";
+
+const initialState = {
+    currentPilot : null
+};
+
+export function selectPilot(state, payload) {
+    const prevSelectedPilot = state.currentPilot;
+    const newSelectedPilot = payload.currentPilot;
+
+    const isSamePilot = prevSelectedPilot === newSelectedPilot;
+
+    return {
+        // Deselect entirely if it's a second click on the same pilot,
+        // otherwise go ahead and select the one that was clicked
+        currentPilot : isSamePilot ? null : newSelectedPilot,
+    };
+}
+
+
+export default createReducer(initialState, {
+    [PILOT_SELECT] : selectPilot,
+});

src/features/pilots/pilotsSelectors.js

@@ -0,0 +1,8 @@
+import {createSelector} from "reselect";
+
+export const selectPilots = state => state.pilots;
+
+export const selectCurrentPilot = createSelector(
+    selectPilots,
+    pilots => pilots.currentPilot,
+);