Add basic 'workloads' Redux app

src/state/workloads/reducers.ts

@@ -0,0 +1,47 @@
+import { Action } from './actions';
+import { Status } from './types';
+
+interface Entry<id extends number> {
+  id: id;
+  completeDate: Date;
+  status: Status;
+}
+
+export type Store = { 
+  [id in number]: Entry<id>;
+};
+  
+
+const initialState: Store = {};
+
+export const reducer = (state: Store = initialState, action: Action): Store => {
+  switch (action.type) {
+    case 'WORKLOAD_CREATE':            
+      return { 
+        [action.payload.workloadId]: {
+          id: action.payload.workloadId,
+          completeDate: action.payload.completeDate,
+          status: 'WORKING',
+        },
+      };
+
+      case 'WORKLOAD_CANCEL': 
+        return {
+          [action.payload.workloadId]: {
+            ...state[action.payload.workloadId],
+            status: 'CANCELED',
+          },
+        }
+      
+      case 'WORKLOAD_UPDATE_STATUS': 
+        return {
+          [action.payload.workloadId]: {
+            ...state[action.payload.workloadId],
+            status: action.payload.status,
+          },
+        }
+
+      default:
+        return state;
+  }
+}