cinny/src/app/features/common-settings/general/RoomRetention.tsx

import React, { useCallback } from 'react';
import { Box, Button, color, Spinner, Text } from 'folds';
import { MatrixError } from 'matrix-js-sdk';
import { SequenceCard } from '../../../components/sequence-card';
import { SequenceCardStyle } from '../../room-settings/styles.css';
import { SettingTile } from '../../../components/setting-tile';
import { useMatrixClient } from '../../../hooks/useMatrixClient';
import { useRoom } from '../../../hooks/useRoom';
import { StateEvent } from '../../../../types/matrix/room';
import { sendStateEvent } from '../../../utils/room';
import { AsyncStatus, useAsyncCallback } from '../../../hooks/useAsyncCallback';
import { useStateEvent } from '../../../hooks/useStateEvent';
import { RoomPermissionsAPI } from '../../../hooks/useRoomPermissions';
import { RetentionContent, RETENTION_PRESETS } from '../../../utils/retention';

type RoomRetentionProps = {
  permissions: RoomPermissionsAPI;
};
export function RoomRetention({ permissions }: RoomRetentionProps) {
  const mx = useMatrixClient();
  const room = useRoom();

  const canEdit = permissions.stateEvent(StateEvent.RoomRetention, mx.getSafeUserId());

  const event = useStateEvent(room, StateEvent.RoomRetention);
  const currentMs = event?.getContent<RetentionContent>().max_lifetime ?? 0;

  const [submitState, submit] = useAsyncCallback(
    useCallback(
      async (ms: number) => {
        const content: RetentionContent = ms > 0 ? { max_lifetime: ms } : {};
        // Lotus custom-state convention: cast the type key (RoomRetention isn't a
        // typed key in the SDK's StateEvents map).
        // eslint-disable-next-line @typescript-eslint/no-explicit-any
        await sendStateEvent(mx, room.roomId, StateEvent.RoomRetention, content);
      },
      [mx, room.roomId],
    ),
  );
  const submitting = submitState.status === AsyncStatus.Loading;

  return (
    <SequenceCard
      className={SequenceCardStyle}
      variant="SurfaceVariant"
      direction="Column"
      gap="400"
    >
      <SettingTile
        title="Message Retention"
        description="Messages older than this window disappear from the timeline. Each member can opt in to permanently delete their own expired messages in Settings → General; full server-side deletion also requires homeserver retention to be configured."
      >
        <Box gap="200" alignItems="Center" style={{ flexWrap: 'wrap' }}>
          {RETENTION_PRESETS.map((preset) => {
            const active = currentMs === preset.ms;
            return (
              <Button
                key={preset.label}
                type="button"
                size="300"
                variant={active ? 'Primary' : 'Secondary'}
                fill={active ? 'Solid' : 'Soft'}
                radii="300"
                disabled={!canEdit || submitting}
                onClick={() => submit(preset.ms)}
              >
                <Text size="B300">{preset.label}</Text>
              </Button>
            );
          })}
          {submitting && <Spinner size="100" variant="Secondary" />}
        </Box>
        {submitState.status === AsyncStatus.Error && (
          <Text style={{ color: color.Critical.Main }} size="T200">
            {(submitState.error as MatrixError).message}
          </Text>
        )}
      </SettingTile>
    </SequenceCard>
  );
}