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* SpeakerBulkComms (Epic 14, Phase E — Story 14.E.3)
*
* The 🎤 Speakers audience of the Communications tab. Surfaces the previously
* unwired `useSendReminder` hook as a bulk, confirm-gated reminder send.
*
* Scope note (NFR9 — frontend-only, no backend): `useSendReminder` is 1:1
* (per speakerPoolId) and supports only the RESPONSE and CONTENT reminder
* types. So this surface offers exactly two reminders, sent by looping the 1:1
* hook over the matching speakers client-side:
* - Response deadline → speakers still INVITED (awaiting a yes/no)
* - Content deadline → speakers ACCEPTED (awaiting their materials)
* "Logistics & arrival" and "thank-you" speaker comms (FR32) would need a new
* backend reminder type + bulk endpoint and are deferred (see deferred-work.md).
*
* NFR1: a send opens a confirm dialog FIRST and the Send button is disabled
* while in flight, so a drag/double-click can never silently double-send.
*/
import React, { useMemo, useState } from 'react';
import {
Alert,
Box,
Button,
CircularProgress,
Dialog,
DialogActions,
DialogContent,
DialogContentText,
DialogTitle,
FormControl,
InputLabel,
MenuItem,
Paper,
Select,
Stack,
Typography,
} from '@mui/material';
import { NotificationsActive as ReminderIcon } from '@mui/icons-material';
import { useTranslation } from 'react-i18next';
import { useSpeakerPool, useSendReminder } from '@/hooks/useSpeakerPool';
import { useBreakpoints } from '@/hooks/useBreakpoints';
import type { SpeakerPoolEntry } from '@/types/speakerPool.types';
interface SpeakerBulkCommsProps {
eventCode: string;
eventTitle: string;
}
type ReminderType = 'RESPONSE' | 'CONTENT';
/** Which speaker state each reminder targets. */
const TARGET_STATUS: Record<ReminderType, SpeakerPoolEntry['status']> = {
RESPONSE: 'INVITED',
CONTENT: 'ACCEPTED',
};
export const SpeakerBulkComms: React.FC<SpeakerBulkCommsProps> = ({ eventCode, eventTitle }) => {
const { t } = useTranslation(['events', 'common']);
const { isMobile } = useBreakpoints();
const poolQuery = useSpeakerPool(eventCode);
const sendReminder = useSendReminder(eventCode);
const [reminderType, setReminderType] = useState<ReminderType>('RESPONSE');
const [confirmOpen, setConfirmOpen] = useState(false);
const [sending, setSending] = useState(false);
const [result, setResult] = useState<{ sent: number; failed: SpeakerPoolEntry[] } | null>(null);
const recipients = useMemo<SpeakerPoolEntry[]>(
() => (poolQuery.data ?? []).filter((s) => s.status === TARGET_STATUS[reminderType]),
[poolQuery.data, reminderType]
);
const typeLabel =
reminderType === 'RESPONSE'
? t('eventPage.speakerComms.typeResponse', 'Response deadline (invited speakers)')
: t('eventPage.speakerComms.typeContent', 'Content deadline (accepted speakers)');
// Loop the 1:1 reminder over the chosen speakers, collecting per-speaker outcomes
// so a partial failure is reported (and retryable) rather than swallowed.
async function runSend(targets: SpeakerPoolEntry[]) {
// The recipient set can refetch to empty while the confirm dialog is open;
// never report a misleading "sent 0" success for a no-op confirm.
Iif (targets.length === 0) {
setConfirmOpen(false);
return;
}
setSending(true);
setConfirmOpen(false);
let sent = 0;
const failed: SpeakerPoolEntry[] = [];
try {
for (const s of targets) {
try {
await sendReminder.mutateAsync({ speakerPoolId: s.id, request: { reminderType } });
sent += 1;
} catch {
failed.push(s);
}
}
setResult({ sent, failed });
} finally {
// Guarantee the button is re-enabled even if something throws outside the per-item catch.
setSending(false);
}
}
Iif (poolQuery.isLoading) {
return (
<Box display="flex" justifyContent="center" py={6}>
<CircularProgress />
</Box>
);
}
if (poolQuery.isError) {
return (
<Alert
severity="error"
data-testid="speaker-comms-load-error"
action={
<Button color="inherit" size="small" onClick={() => poolQuery.refetch()}>
{t('eventPage.speakerComms.retry', 'Retry')}
</Button>
}
>
{t('eventPage.speakerComms.loadError', 'Could not load the speaker pool.')}
</Alert>
);
}
const noRecipients = recipients.length === 0;
return (
<Stack spacing={3} data-testid="speaker-comms">
<Box>
<Typography variant="h6" gutterBottom>
{t('eventPage.speakerComms.title', 'Speaker reminders')}
</Typography>
<Typography variant="body2" color="text.secondary">
{t(
'eventPage.speakerComms.description',
'Send a deadline reminder to the speakers who still owe a response or their content. Each speaker is emailed individually — invitations and one-off nudges stay on the speaker card.'
)}
</Typography>
</Box>
<Box
sx={{
display: 'grid',
gridTemplateColumns: { xs: '1fr', md: 'minmax(300px, 34%) 1fr' },
gap: 3,
alignItems: 'start',
}}
>
<Paper variant="outlined" sx={{ p: 2 }}>
<Stack spacing={2}>
<FormControl size="small">
<InputLabel>{t('eventPage.speakerComms.reminderType', 'Reminder type')}</InputLabel>
<Select
value={reminderType}
label={t('eventPage.speakerComms.reminderType', 'Reminder type')}
disabled={sending}
onChange={(e) => {
setReminderType(e.target.value as ReminderType);
setResult(null);
}}
SelectDisplayProps={
{
'data-testid': 'speaker-comms-type-select',
} as React.HTMLAttributes<HTMLDivElement>
}
>
<MenuItem value="RESPONSE">
{t('eventPage.speakerComms.typeResponse', 'Response deadline (invited speakers)')}
</MenuItem>
<MenuItem value="CONTENT">
{t('eventPage.speakerComms.typeContent', 'Content deadline (accepted speakers)')}
</MenuItem>
</Select>
</FormControl>
<Typography
variant="caption"
color="text.secondary"
data-testid="speaker-comms-recipient-count"
>
{t('eventPage.speakerComms.recipientCount', {
count: recipients.length,
defaultValue: `${recipients.length} speaker(s) will be reminded`,
})}
</Typography>
{noRecipients && (
<Alert severity="info" data-testid="speaker-comms-empty">
{t(
'eventPage.speakerComms.empty',
'No speakers are currently awaiting this reminder.'
)}
</Alert>
)}
<Box>
<Button
variant="contained"
startIcon={sending ? <CircularProgress size={16} /> : <ReminderIcon />}
onClick={() => setConfirmOpen(true)}
disabled={noRecipients || sending}
data-testid="speaker-comms-send-button"
>
{t('eventPage.speakerComms.send', 'Send reminders')}
</Button>
</Box>
{result && (
<Alert
severity={result.failed.length === 0 ? 'success' : 'warning'}
onClose={() => setResult(null)}
data-testid="speaker-comms-result"
action={
result.failed.length > 0 ? (
<Button
color="inherit"
size="small"
disabled={sending}
onClick={() => runSend(result.failed)}
data-testid="speaker-comms-retry-failed"
>
{t('eventPage.speakerComms.retryFailed', {
count: result.failed.length,
defaultValue: `Retry the ${result.failed.length} that failed`,
})}
</Button>
) : undefined
}
>
{t('eventPage.speakerComms.result', {
sent: result.sent,
failed: result.failed.length,
defaultValue: `Sent ${result.sent}, failed ${result.failed.length}.`,
})}
</Alert>
)}
</Stack>
</Paper>
<Paper variant="outlined" sx={{ p: 2 }}>
<Typography variant="body2" color="text.secondary">
{t(
'eventPage.speakerComms.noPreview',
"Reminders are sent with the standard speaker templates in each speaker's language — no preview to show."
)}
</Typography>
</Paper>
</Box>
{/* Confirmation dialog (NFR1 — opens before any send call). */}
<Dialog open={confirmOpen} onClose={() => setConfirmOpen(false)} fullScreen={isMobile}>
<DialogTitle>
{t('eventPage.speakerComms.confirmTitle', 'Send speaker reminders?')}
</DialogTitle>
<DialogContent>
<DialogContentText>
{t('eventPage.speakerComms.confirmBody', {
type: typeLabel,
count: recipients.length,
eventTitle,
defaultValue: `Send a “${typeLabel}” reminder to ${recipients.length} speaker(s) of «${eventTitle}»? Each is emailed individually.`,
})}
</DialogContentText>
</DialogContent>
<DialogActions>
<Button onClick={() => setConfirmOpen(false)} disabled={sending}>
{t('common:actions.cancel', 'Cancel')}
</Button>
<Button
onClick={() => runSend(recipients)}
variant="contained"
disabled={sending}
autoFocus
data-testid="speaker-comms-confirm-send"
>
{sending ? <CircularProgress size={20} /> : t('common.confirm', 'Confirm')}
</Button>
</DialogActions>
</Dialog>
</Stack>
);
};
export default SpeakerBulkComms;
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