116 lines
2.6 KiB
TypeScript
116 lines
2.6 KiB
TypeScript
// Copyright 2021 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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import type { ThunkAction } from 'redux-thunk';
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import type { NoopActionType } from './noop';
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import type { StateType as RootStateType } from '../reducer';
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import type { LinkPreviewType } from '../../types/message/LinkPreviews';
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import type { LinkPreviewSourceType } from '../../types/LinkPreview';
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import { assignWithNoUnnecessaryAllocation } from '../../util/assignWithNoUnnecessaryAllocation';
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import { maybeGrabLinkPreview } from '../../services/LinkPreview';
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import { useBoundActions } from '../../hooks/useBoundActions';
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// State
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export type LinkPreviewsStateType = {
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readonly linkPreview?: LinkPreviewType;
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readonly source?: LinkPreviewSourceType;
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};
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// Actions
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export const ADD_PREVIEW = 'linkPreviews/ADD_PREVIEW';
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export const REMOVE_PREVIEW = 'linkPreviews/REMOVE_PREVIEW';
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export type AddLinkPreviewActionType = {
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type: 'linkPreviews/ADD_PREVIEW';
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payload: {
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linkPreview: LinkPreviewType;
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source: LinkPreviewSourceType;
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};
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};
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export type RemoveLinkPreviewActionType = {
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type: 'linkPreviews/REMOVE_PREVIEW';
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};
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type LinkPreviewsActionType =
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| AddLinkPreviewActionType
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| RemoveLinkPreviewActionType;
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// Action Creators
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function debouncedMaybeGrabLinkPreview(
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message: string,
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source: LinkPreviewSourceType
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): ThunkAction<void, RootStateType, unknown, NoopActionType> {
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return dispatch => {
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maybeGrabLinkPreview(message, source);
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dispatch({
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type: 'NOOP',
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payload: null,
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});
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};
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}
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function addLinkPreview(
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linkPreview: LinkPreviewType,
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source: LinkPreviewSourceType
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): AddLinkPreviewActionType {
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return {
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type: ADD_PREVIEW,
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payload: {
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linkPreview,
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source,
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},
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};
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}
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function removeLinkPreview(): RemoveLinkPreviewActionType {
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return {
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type: REMOVE_PREVIEW,
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};
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}
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export const actions = {
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addLinkPreview,
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debouncedMaybeGrabLinkPreview,
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removeLinkPreview,
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};
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export const useLinkPreviewActions = (): typeof actions =>
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useBoundActions(actions);
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// Reducer
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export function getEmptyState(): LinkPreviewsStateType {
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return {
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linkPreview: undefined,
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};
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}
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export function reducer(
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state: Readonly<LinkPreviewsStateType> = getEmptyState(),
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action: Readonly<LinkPreviewsActionType>
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): LinkPreviewsStateType {
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if (action.type === ADD_PREVIEW) {
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const { payload } = action;
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return {
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linkPreview: payload.linkPreview,
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source: payload.source,
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};
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}
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if (action.type === REMOVE_PREVIEW) {
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return assignWithNoUnnecessaryAllocation(state, {
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linkPreview: undefined,
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source: undefined,
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});
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}
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return state;
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}
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