109 lines
2.5 KiB
TypeScript
109 lines
2.5 KiB
TypeScript
// Copyright 2020 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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import { SocketStatus } from '../../types/SocketStatus';
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import { trigger } from '../../shims/events';
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import { assignWithNoUnnecessaryAllocation } from '../../util/assignWithNoUnnecessaryAllocation';
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// State
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export type NetworkStateType = {
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isOnline: boolean;
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socketStatus: SocketStatus;
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withinConnectingGracePeriod: boolean;
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};
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// Actions
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const CHECK_NETWORK_STATUS = 'network/CHECK_NETWORK_STATUS';
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const CLOSE_CONNECTING_GRACE_PERIOD = 'network/CLOSE_CONNECTING_GRACE_PERIOD';
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const RELINK_DEVICE = 'network/RELINK_DEVICE';
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export type CheckNetworkStatusPayloadType = {
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isOnline: boolean;
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socketStatus: SocketStatus;
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};
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type CheckNetworkStatusAction = {
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type: 'network/CHECK_NETWORK_STATUS';
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payload: CheckNetworkStatusPayloadType;
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};
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type CloseConnectingGracePeriodActionType = {
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type: 'network/CLOSE_CONNECTING_GRACE_PERIOD';
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};
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type RelinkDeviceActionType = {
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type: 'network/RELINK_DEVICE';
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};
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export type NetworkActionType =
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| CheckNetworkStatusAction
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| CloseConnectingGracePeriodActionType
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| RelinkDeviceActionType;
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// Action Creators
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function checkNetworkStatus(
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payload: CheckNetworkStatusPayloadType
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): CheckNetworkStatusAction {
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return {
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type: CHECK_NETWORK_STATUS,
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payload,
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};
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}
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function closeConnectingGracePeriod(): CloseConnectingGracePeriodActionType {
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return {
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type: CLOSE_CONNECTING_GRACE_PERIOD,
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};
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}
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function relinkDevice(): RelinkDeviceActionType {
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trigger('setupAsNewDevice');
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return {
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type: RELINK_DEVICE,
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};
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}
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export const actions = {
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checkNetworkStatus,
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closeConnectingGracePeriod,
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relinkDevice,
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};
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// Reducer
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function getEmptyState(): NetworkStateType {
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return {
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isOnline: navigator.onLine,
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socketStatus: WebSocket.OPEN,
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withinConnectingGracePeriod: true,
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};
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}
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export function reducer(
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state: Readonly<NetworkStateType> = getEmptyState(),
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action: Readonly<NetworkActionType>
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): NetworkStateType {
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if (action.type === CHECK_NETWORK_STATUS) {
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const { isOnline, socketStatus } = action.payload;
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// This action is dispatched frequently. We avoid allocating a new object if nothing
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// has changed to avoid an unnecessary re-render.
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return assignWithNoUnnecessaryAllocation(state, {
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isOnline,
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socketStatus,
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});
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}
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if (action.type === CLOSE_CONNECTING_GRACE_PERIOD) {
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return {
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...state,
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withinConnectingGracePeriod: false,
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};
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}
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return state;
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}
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