group creation form

app/javascript/gabsocial/reducers/group_editor.js

@@ -0,0 +1,56 @@
+import { Map as ImmutableMap } from 'immutable';
+import {
+    GROUP_CREATE_REQUEST,
+    GROUP_CREATE_FAIL,
+    GROUP_CREATE_SUCCESS,
+    GROUP_UPDATE_REQUEST,
+    GROUP_UPDATE_FAIL,
+    GROUP_UPDATE_SUCCESS,
+    GROUP_EDITOR_RESET,
+    GROUP_EDITOR_SETUP,
+    GROUP_EDITOR_VALUE_CHANGE,
+} from '../actions/group_editor';
+
+const initialState = ImmutableMap({
+    groupId: null,
+    isSubmitting: false,
+    isChanged: false,
+    title: '',
+    description: '',
+    coverImage: null,
+});
+
+export default function groupEditorReducer(state = initialState, action) {
+    switch(action.type) {
+    case GROUP_EDITOR_RESET:
+        return initialState;
+    case GROUP_EDITOR_SETUP:
+        return state.withMutations(map => {
+            map.set('groupId', action.group.get('id'));
+            map.set('title', action.group.get('title'));
+            map.set('isSubmitting', false);
+        });
+    case GROUP_EDITOR_VALUE_CHANGE:
+        return state.withMutations(map => {
+            map.set(action.field, action.value);
+            map.set('isChanged', true);
+        });
+    case GROUP_CREATE_REQUEST:
+    case GROUP_UPDATE_REQUEST:
+        return state.withMutations(map => {
+            map.set('isSubmitting', true);
+            map.set('isChanged', false);
+        });
+    case GROUP_CREATE_FAIL:
+    case GROUP_UPDATE_FAIL:
+        return state.set('isSubmitting', false);
+    case GROUP_CREATE_SUCCESS:
+    case GROUP_UPDATE_SUCCESS:
+        return state.withMutations(map => {
+            map.set('isSubmitting', false);
+            map.set('groupId', action.group.id);
+        });
+    default:
+        return state;
+    }
+};