1 files changed, 59 insertions, 0 deletions
diff --git a/frontend/src/reducers/interaction-level.js b/frontend/src/reducers/interaction-level.js
new file mode 100644
index 00000000..581906c5
--- /dev/null
+++ b/frontend/src/reducers/interaction-level.js
@@ -0,0 +1,59 @@
+import { OPEN_EXPERIMENT_SUCCEEDED } from "../actions/experiments";
+import {
+  GO_DOWN_ONE_INTERACTION_LEVEL,
+  GO_FROM_BUILDING_TO_ROOM,
+  GO_FROM_RACK_TO_MACHINE,
+  GO_FROM_ROOM_TO_RACK
+} from "../actions/interaction-level";
+import { OPEN_SIMULATION_SUCCEEDED } from "../actions/simulations";
+import { SET_CURRENT_DATACENTER } from "../actions/topology/building";
+
+export function interactionLevel(state = { mode: "BUILDING" }, action) {
+  switch (action.type) {
+    case OPEN_EXPERIMENT_SUCCEEDED:
+    case OPEN_SIMULATION_SUCCEEDED:
+    case SET_CURRENT_DATACENTER:
+      return {
+        mode: "BUILDING"
+      };
+    case GO_FROM_BUILDING_TO_ROOM:
+      return {
+        mode: "ROOM",
+        roomId: action.roomId
+      };
+    case GO_FROM_ROOM_TO_RACK:
+      return {
+        mode: "RACK",
+        roomId: state.roomId,
+        tileId: action.tileId
+      };
+    case GO_FROM_RACK_TO_MACHINE:
+      return {
+        mode: "MACHINE",
+        roomId: state.roomId,
+        tileId: state.tileId,
+        position: action.position
+      };
+    case GO_DOWN_ONE_INTERACTION_LEVEL:
+      if (state.mode === "ROOM") {
+        return {
+          mode: "BUILDING"
+        };
+      } else if (state.mode === "RACK") {
+        return {
+          mode: "ROOM",
+          roomId: state.roomId
+        };
+      } else if (state.mode === "MACHINE") {
+        return {
+          mode: "RACK",
+          roomId: state.roomId,
+          tileId: state.tileId
+        };
+      } else {
+        return state;
+      }
+    default:
+      return state;
+  }
+}