| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| import { |
| useMemo, |
| useEffect, |
| useState, |
| createContext, |
| Dispatch, |
| } from 'react'; |
| import { useImmerReducer } from 'use-immer'; |
| import { State, Action } from './type'; |
| import reducer from './reducer'; |
| |
| const initialState: State = { |
| endpoint: 'http://localhost:10106', |
| }; |
| |
| const AppContext = createContext<{ |
| state: State; |
| dispatch: Dispatch<Action>; |
| }>({ |
| state: initialState, |
| dispatch: () => null, |
| }); |
| |
| interface AppProviderProps { |
| children: React.ReactNode; |
| } |
| |
| const AppProvider = ({ children }: AppProviderProps) => { |
| const [state, dispatch] = useImmerReducer( |
| reducer, |
| initialState, |
| ); |
| const [isLoading, setIsLoading] = useState(true); |
| |
| useEffect(() => { |
| const localState = localStorage.getItem('state'); |
| if (localState === null) { |
| return; |
| } |
| const parsedState: State = JSON.parse(localState); |
| dispatch({ |
| type: 'SetState', |
| payload: { |
| endpoint: parsedState.endpoint, |
| }, |
| }); |
| }, []); |
| |
| useEffect(() => { |
| if (!isLoading) localStorage.setItem('state', JSON.stringify(state)); |
| setIsLoading(false); |
| }, [state]); |
| |
| const context = useMemo(() => ({ |
| state, |
| dispatch, |
| }), [state]); |
| |
| return ( |
| <AppContext.Provider |
| value={context} |
| > |
| {children} |
| </AppContext.Provider> |
| ); |
| }; |
| |
| export { AppContext, AppProvider }; |