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* usePresentationSections Hook
* Story 10.8a: Moderator Presentation Page — Functional
*
* Derives the ordered section array from event data.
* Section types map 1-to-1 to slide components.
*
* ACs: #1, #13, #26–28
*/
import { useMemo } from 'react';
import type { PresentationEventDetail, PresentationSession } from '@/services/presentationService';
import type { User } from '@/types/user.types';
import type { components } from '@/types/generated/events-core-api.types';
import type { PresentationSettings } from '@/services/presentationService';
type TeaserImageItem = components['schemas']['TeaserImageItem'];
function insertTeaserImages(
sections: PresentationSection[],
images: TeaserImageItem[],
position: string
): void {
[...images]
.filter((img) => (img.presentationPosition ?? 'AFTER_TOPIC_REVEAL') === position)
.sort((a, b) => a.displayOrder - b.displayOrder)
.forEach((img) => {
sections.push({
type: 'teaser-image',
key: `teaser-image-${img.id}`,
imageUrl: img.imageUrl,
});
});
}
export type SectionType =
| 'welcome'
| 'about'
| 'committee'
| 'topic-reveal'
| 'teaser-image'
| 'agenda-preview'
| 'session'
| 'break'
| 'agenda-recap'
| 'upcoming-events'
| 'apero';
export interface PresentationSection {
type: SectionType;
key: string;
session?: PresentationSession;
/** Present only for type === 'teaser-image' (Story 10.22) */
imageUrl?: string;
}
// Session types that become individual speaker slides
const SPEAKER_SESSION_TYPES = new Set(['keynote', 'presentation', 'workshop', 'panel_discussion']);
// Session types that are breaks/structural (break flow, not speaker slide)
const BREAK_SESSION_TYPES = new Set(['break', 'lunch', 'aperitif']);
export function usePresentationSections(
event: PresentationEventDetail | null,
sessions: PresentationSession[],
globalTeaserImages?: TeaserImageItem[]
): PresentationSection[] {
return useMemo(() => {
if (!event) {
return [];
}
const sections: PresentationSection[] = [];
const teaserImages = event.teaserImages ?? [];
const globalImages = globalTeaserImages ?? [];
// §1 Welcome
sections.push({ type: 'welcome', key: 'welcome' });
insertTeaserImages(sections, globalImages, 'AFTER_WELCOME');
insertTeaserImages(sections, teaserImages, 'AFTER_WELCOME');
// §2 About
sections.push({ type: 'about', key: 'about' });
// §3 Committee
sections.push({ type: 'committee', key: 'committee' });
insertTeaserImages(sections, globalImages, 'AFTER_COMMITTEE');
insertTeaserImages(sections, teaserImages, 'AFTER_COMMITTEE');
// §4 Topic Reveal
sections.push({ type: 'topic-reveal', key: 'topic-reveal' });
// §4.5 Teaser Images at AFTER_TOPIC_REVEAL (Story 10.22 AC5; default position)
insertTeaserImages(sections, globalImages, 'AFTER_TOPIC_REVEAL');
insertTeaserImages(sections, teaserImages, 'AFTER_TOPIC_REVEAL');
// §5 Agenda Preview
sections.push({ type: 'agenda-preview', key: 'agenda-preview' });
// Sort sessions by startTime ascending (nulls last)
// Defensive: guard against non-array sessions (paginated API response)
const sessionsArray = Array.isArray(sessions) ? sessions : [];
const sortedSessions = [...sessionsArray].sort((a, b) => {
Iif (!a.startTime && !b.startTime) {
return 0;
}
Iif (!a.startTime) {
return 1;
}
Iif (!b.startTime) {
return -1;
}
return new Date(a.startTime).getTime() - new Date(b.startTime).getTime();
});
// Find the first break/lunch session
const breakSession = sortedSessions.find(
(s) => s.sessionType && BREAK_SESSION_TYPES.has(s.sessionType)
);
// Speaker sessions only — exclude moderation/networking/break/lunch
const speakerSessions = sortedSessions.filter(
(s) => s.sessionType && SPEAKER_SESSION_TYPES.has(s.sessionType)
);
if (breakSession?.startTime) {
// Pre-break speaker sections
const preBreak = speakerSessions.filter(
(s) => s.startTime && new Date(s.startTime) < new Date(breakSession.startTime!)
);
// Post-break speaker sections — sessions starting AT OR AFTER break end (>=, not >).
// Using strictly-greater-than would exclude sessions that start exactly when the
// break ends, which is the normal case in BATbern schedules (e.g. break 19:30–20:00,
// next talk at 20:00). Fix: use >= so boundary-equal sessions are included.
const breakBoundary = breakSession.endTime ?? breakSession.startTime!;
const postBreak = speakerSessions.filter(
(s) => s.startTime && new Date(s.startTime) >= new Date(breakBoundary)
);
preBreak.forEach((s) => {
sections.push({ type: 'session', key: `session-${s.sessionSlug}`, session: s });
});
// §N Break (sequential nav)
sections.push({ type: 'break', key: 'break', session: breakSession });
// §N+1 Agenda Recap
sections.push({ type: 'agenda-recap', key: 'agenda-recap' });
postBreak.forEach((s) => {
sections.push({ type: 'session', key: `session-${s.sessionSlug}`, session: s });
});
} else {
// No break — all speaker sessions in sequence
speakerSessions.forEach((s) => {
sections.push({ type: 'session', key: `session-${s.sessionSlug}`, session: s });
});
}
// Upcoming Events
sections.push({ type: 'upcoming-events', key: 'upcoming-events' });
insertTeaserImages(sections, globalImages, 'AFTER_UPCOMING_EVENTS');
insertTeaserImages(sections, teaserImages, 'AFTER_UPCOMING_EVENTS');
// Apéro
sections.push({ type: 'apero', key: 'apero' });
return sections;
}, [event, sessions, globalTeaserImages]);
}
/**
* Returns the slugs of all pre-break speaker sessions (for AgendaRecap greying).
*/
export function getPreBreakSessionSlugs(sessions: PresentationSession[]): string[] {
const safeArr = Array.isArray(sessions) ? sessions : [];
const sorted = [...safeArr].sort((a, b) => {
Iif (!a.startTime) {
return 1;
}
Iif (!b.startTime) {
return -1;
}
return new Date(a.startTime).getTime() - new Date(b.startTime).getTime();
});
const breakSession = sorted.find((s) => s.sessionType && BREAK_SESSION_TYPES.has(s.sessionType));
if (!breakSession?.startTime) {
return [];
}
return sorted
.filter(
(s) =>
SPEAKER_SESSION_TYPES.has(s.sessionType ?? '') &&
s.startTime &&
new Date(s.startTime) < new Date(breakSession.startTime!)
)
.map((s) => s.sessionSlug);
}
/**
* Returns the first post-break speaker session (for break resume time).
*/
export function getFirstPostBreakSession(
sessions: PresentationSession[]
): PresentationSession | null {
const safeArr = Array.isArray(sessions) ? sessions : [];
const sorted = [...safeArr].sort((a, b) => {
Iif (!a.startTime) {
return 1;
}
Iif (!b.startTime) {
return -1;
}
return new Date(a.startTime).getTime() - new Date(b.startTime).getTime();
});
const breakSession = sorted.find((s) => s.sessionType && BREAK_SESSION_TYPES.has(s.sessionType));
if (!breakSession?.endTime) {
return null;
}
// Use >= so a session starting exactly at break end time is included (same fix as postBreak filter above).
return (
sorted.find(
(s) =>
SPEAKER_SESSION_TYPES.has(s.sessionType ?? '') &&
s.startTime &&
new Date(s.startTime) >= new Date(breakSession.endTime!)
) ?? null
);
}
export type { PresentationEventDetail, PresentationSession, PresentationSettings };
export type { User };
export type { components };
|