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// @flow
import * as React from 'react';
import compose from 'recompose/compose';
import { sortAndGroupMessages } from 'shared/clients/group-messages';
import ChatMessages from 'src/components/messageGroup';
import { Loading } from 'src/components/loading';
import viewNetworkHandler from 'src/components/viewNetworkHandler';
import NextPageButton from 'src/components/nextPageButton';
import getDirectMessageThreadMessages from 'shared/graphql/queries/directMessageThread/getDirectMessageThreadMessageConnection';
import type { GetDirectMessageThreadMessageConnectionType } from 'shared/graphql/queries/directMessageThread/getDirectMessageThreadMessageConnection';
import { MessagesScrollWrapper } from './style';
import { ErrorBoundary } from 'src/components/error';
type Props = {
id: string,
data: {
loading: boolean,
directMessageThread: GetDirectMessageThreadMessageConnectionType,
messages: Array<Object>,
hasNextPage: boolean,
fetchMore: Function,
},
isLoading: boolean,
hasError: boolean,
isFetchingMore: boolean,
};
class MessagesWithData extends React.Component<Props> {
componentDidMount() {
const thread = this.props.data.directMessageThread;
// Scroll to bottom on mount if we got cached data as getSnapshotBeforeUpdate does not fire for mounts
if (thread) {
const elem = document.getElementById('main');
if (!elem) return;
elem.scrollTop = elem.scrollHeight;
}
}
getSnapshotBeforeUpdate(prev) {
const curr = this.props;
// First load
if (
!prev.data.directMessageThread &&
curr.data.directMessageThread &&
curr.data.directMessageThread.messageConnection.edges.length > 0
) {
return {
type: 'bottom',
};
}
// New messages
if (
prev.data.directMessageThread &&
curr.data.directMessageThread &&
prev.data.directMessageThread.messageConnection.edges.length <
curr.data.directMessageThread.messageConnection.edges.length
) {
const elem = document.getElementById('main');
if (!elem) return null;
// If we are near the bottom when new messages come in, stick to the bottom
if (elem.scrollHeight < elem.scrollTop + elem.clientHeight + 400) {
return {
type: 'bottom',
};
}
const prevEdges = prev.data.directMessageThread.messageConnection.edges.filter(
Boolean
);
const currEdges = curr.data.directMessageThread.messageConnection.edges.filter(
Boolean
);
// If messages were added at the end, keep the scroll position the same
if (
currEdges[currEdges.length - 1].node.id ===
prevEdges[prevEdges.length - 1].node.id
) {
return null;
}
// If messages were added at the top, persist the scroll position
return {
type: 'persist',
values: {
top: elem.scrollTop,
height: elem.scrollHeight,
},
};
}
return null;
}
componentDidUpdate(prev, _, snapshot) {
if (snapshot) {
const elem = document.getElementById('main');
if (elem) {
switch (snapshot.type) {
case 'bottom': {
elem.scrollTop = elem.scrollHeight;
break;
}
case 'persist': {
elem.scrollTop =
elem.scrollHeight - snapshot.values.height + snapshot.values.top;
break;
}
default: {
break;
}
}
}
}
}
render() {
const {
data: { messages, directMessageThread, hasNextPage, fetchMore },
hasError,
isLoading,
isFetchingMore,
} = this.props;
if (hasError) {
return <div>Error!</div>;
}
// NOTE(@mxstbr): The networkStatus check shouldn't be there, but if I remove
// it the loading indicator doesn't show when switching between threads which
// is hella annoying as the old msgs stick around until the new ones are there.
// TODO: FIXME and remove the networkStatus === 7
if (isFetchingMore || (messages && messages.length > 0)) {
let unsortedMessages = messages.map(message => message.node);
const unique = array => {
const processed = [];
for (let i = array.length - 1; i >= 0; i--) {
if (processed.indexOf(array[i].id) < 0) {
processed.push(array[i].id);
} else {
array.splice(i, 1);
}
}
return array;
};
const uniqueMessages = unique(unsortedMessages);
const sortedMessages = sortAndGroupMessages(uniqueMessages);
return (
<MessagesScrollWrapper>
<ErrorBoundary>
{hasNextPage && (
<NextPageButton
isFetchingMore={isFetchingMore}
fetchMore={fetchMore}
/>
)}
<ChatMessages
messages={sortedMessages}
uniqueMessageCount={uniqueMessages.length}
threadType={'directMessageThread'}
thread={directMessageThread}
/>
</ErrorBoundary>
</MessagesScrollWrapper>
);
}
if (isLoading) {
return (
<MessagesScrollWrapper>
<Loading style={{ padding: '64px 0' }} />
</MessagesScrollWrapper>
);
}
return null;
}
}
const Messages = compose(
getDirectMessageThreadMessages,
viewNetworkHandler
)(MessagesWithData);
export default Messages;
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