Add redux actions and reducer for scheduler entries

ui/src/reducers/schedulerEntriesReducer.ts

@@ -0,0 +1,49 @@
+import {
+  LIST_SCHEDULER_ENTRIES_BEGIN,
+  LIST_SCHEDULER_ENTRIES_ERROR,
+  LIST_SCHEDULER_ENTRIES_SUCCESS,
+  SchedulerEntriesActionTypes,
+} from "../actions/schedulerEntriesActions";
+import { SchedulerEntry } from "../api";
+
+interface SchedulerEntriesState {
+  loading: boolean;
+  data: SchedulerEntry[];
+  error: string; // error description
+}
+
+const initialState: SchedulerEntriesState = {
+  loading: false,
+  data: [],
+  error: "",
+};
+
+function schedulerEntriesReducer(
+  state = initialState,
+  action: SchedulerEntriesActionTypes
+): SchedulerEntriesState {
+  switch (action.type) {
+    case LIST_SCHEDULER_ENTRIES_BEGIN:
+      return {
+        ...state,
+        loading: true,
+      };
+    case LIST_SCHEDULER_ENTRIES_SUCCESS:
+      return {
+        error: "",
+        loading: false,
+        data: action.payload.entries,
+      };
+    case LIST_SCHEDULER_ENTRIES_ERROR:
+      // TODO: set error state
+      return {
+        ...state,
+        loading: false,
+        error: action.error,
+      };
+    default:
+      return state;
+  }
+}
+
+export default schedulerEntriesReducer;