Add topic filter

app/src/reducers/Settings.ts

@@ -0,0 +1,84 @@
+import { Action } from 'redux'
+import { createReducer } from './lib'
+
+export enum TopicOrder {
+  none = 'none',
+  messages = '#messages',
+  abc = 'abc',
+  topics = '#topics',
+}
+
+export interface SettingsState {
+  autoExpandLimit: number
+  visible: boolean
+  topicOrder: TopicOrder
+  topicFilter?: string
+}
+export type Action = SetAutoExpandLimit | ToggleVisibility | SetTopicOrder | FilterTopics
+
+export enum ActionTypes {
+  SETTINGS_SET_AUTO_EXPAND_LIMIT = 'SETTINGS_SET_AUTO_EXPAND_LIMIT',
+  SETTINGS_TOGGLE_VISIBILITY = 'SETTINGS_TOGGLE_VISIBILITY',
+  SETTINGS_SET_TOPIC_ORDER = 'SETTINGS_SET_TOPIC_ORDER',
+  SETTINGS_FILTER_TOPICS = 'SETTINGS_FILTER_TOPICS',
+}
+
+const initialState: SettingsState = {
+  autoExpandLimit: 0,
+  topicOrder: TopicOrder.none,
+  visible: false,
+}
+
+export const settingsReducer = createReducer(initialState, {
+  SETTINGS_SET_AUTO_EXPAND_LIMIT: setAutoExpandLimit,
+  SETTINGS_TOGGLE_VISIBILITY: toggleVisibility,
+  SETTINGS_SET_TOPIC_ORDER: setTopicOrder,
+  SETTINGS_FILTER_TOPICS: filterTopics,
+})
+
+function setAutoExpandLimit(state: SettingsState, action: SetAutoExpandLimit) {
+  return {
+    ...state,
+    autoExpandLimit: action.autoExpandLimit,
+  }
+}
+
+export interface SetAutoExpandLimit {
+  type: ActionTypes.SETTINGS_SET_AUTO_EXPAND_LIMIT
+  autoExpandLimit: number
+}
+
+function toggleVisibility(state: SettingsState, action: ToggleVisibility) {
+  return {
+    ...state,
+    visible: !state.visible,
+  }
+}
+
+export interface ToggleVisibility {
+  type: ActionTypes.SETTINGS_TOGGLE_VISIBILITY
+}
+
+function setTopicOrder(state: SettingsState, action: SetTopicOrder) {
+  return {
+    ...state,
+    topicOrder: action.topicOrder,
+  }
+}
+
+export interface SetTopicOrder {
+  type: ActionTypes.SETTINGS_SET_TOPIC_ORDER
+  topicOrder: string
+}
+
+function filterTopics(state: SettingsState, action: FilterTopics) {
+  return {
+    ...state,
+    topicFilter: action.topicFilter,
+  }
+}
+
+export interface FilterTopics {
+  type: ActionTypes.SETTINGS_FILTER_TOPICS
+  topicFilter: string
+}