[Glitch] Add trends UI with admin and user settings

Port 9072fe5ab6 to glitch-soc

Signed-off-by: Thibaut Girka <thib@sitedethib.com>

app/javascript/flavours/glitch/reducers/index.js

@@ -33,6 +33,7 @@ import suggestions from './suggestions';
 import pinnedAccountsEditor from './pinned_accounts_editor';
 import polls from './polls';
 import identity_proofs from './identity_proofs';
+import trends from './trends';
 
 const reducers = {
   dropdown_menu,
@@ -69,6 +70,7 @@ const reducers = {
   suggestions,
   pinnedAccountsEditor,
   polls,
+  trends,
 };
 
 export default combineReducers(reducers);

app/javascript/flavours/glitch/reducers/settings.js

@@ -15,6 +15,10 @@ const initialState = ImmutableMap({
 
   skinTone: 1,
 
+  trends: ImmutableMap({
+    show: true,
+  }),
+
   home: ImmutableMap({
     shows: ImmutableMap({
       reblog: true,

app/javascript/flavours/glitch/reducers/trends.js

@@ -0,0 +1,23 @@
+import { TRENDS_FETCH_REQUEST, TRENDS_FETCH_SUCCESS, TRENDS_FETCH_FAIL } from '../actions/trends';
+import { Map as ImmutableMap, List as ImmutableList, fromJS } from 'immutable';
+
+const initialState = ImmutableMap({
+  items: ImmutableList(),
+  isLoading: false,
+});
+
+export default function trendsReducer(state = initialState, action) {
+  switch(action.type) {
+  case TRENDS_FETCH_REQUEST:
+    return state.set('isLoading', true);
+  case TRENDS_FETCH_SUCCESS:
+    return state.withMutations(map => {
+      map.set('items', fromJS(action.trends));
+      map.set('isLoading', false);
+    });
+  case TRENDS_FETCH_FAIL:
+    return state.set('isLoading', false);
+  default:
+    return state;
+  }
+};