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SAE-BUT2-frontend/src/components/homePage/calendar.jsx
T

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React

import { useState, useMemo, useEffect } from "react";
import styles from "./calendar.module.css";
import { formatDateLetterJS } from "../../utils/date/formatDateLetter.js";
function Calendar({ events = [] }) {
const monthNames = [
"Janvier", "Février", "Mars", "Avril", "Mai", "Juin",
"Juillet", "Août", "Septembre", "Octobre", "Novembre", "Décembre"
];
const today = new Date();
const [currentMonth, setCurrentMonth] = useState(today.getMonth());
const [currentYear] = useState(today.getFullYear());
const [selectedDay, setSelectedDay] = useState(null);
const eventsByDate = useMemo(() => {
return events.reduce((acc, ev) => {
if (!ev?.start) return acc;
const dateKey = ev.start.split(" ")[0]; // YYYY-MM-DD
if (!acc[dateKey]) acc[dateKey] = [];
acc[dateKey].push(ev);
return acc;
}, {});
}, [events]);
useEffect(() => {
const key = `${today.getFullYear()}-${String(today.getMonth() + 1).padStart(2, "0")}-${String(today.getDate()).padStart(2, "0")}`;
setSelectedDay({
date: key,
events: eventsByDate[key] || []
});
}, [eventsByDate]);
const daysInMonth = new Date(currentYear, currentMonth + 1, 0).getDate();
const firstDay = new Date(currentYear, currentMonth, 1).getDay();
const startDay = (firstDay + 6) % 7;
const days = [];
for (let i = 0; i < startDay; i++) days.push(null);
for (let i = 1; i <= daysInMonth; i++) days.push(i);
const selectDay = (year, month, day) => {
const key = `${year}-${String(month + 1).padStart(2, "0")}-${String(day).padStart(2, "0")}`;
setSelectedDay({
date: key,
events: eventsByDate[key] || []
});
};
const handleDayClick = (day) => {
if (!day) return;
selectDay(currentYear, currentMonth, day);
};
return (
<div className={`${styles.glassCard} glassCard`}>
<div className={styles.calendarContainer}>
<div className={styles.calendarHeader}>
<button onClick={() => setCurrentMonth(m => m === 0 ? 11 : m - 1)}></button>
<p>{monthNames[currentMonth]} {currentYear}</p>
<button onClick={() => setCurrentMonth(m => m === 11 ? 0 : m + 1)}></button>
</div>
<table className={styles.calendar}>
<thead>
<tr>
<th>Lun</th><th>Mar</th><th>Mer</th>
<th>Jeu</th><th>Ven</th><th>Sam</th><th>Dim</th>
</tr>
</thead>
<tbody>
{Array.from({ length: Math.ceil(days.length / 7) }).map((_, w) => (
<tr key={w}>
{days.slice(w * 7, w * 7 + 7).map((day, i) => {
if (!day) return <td key={i}></td>;
const key = `${currentYear}-${String(currentMonth + 1).padStart(2, "0")}-${String(day).padStart(2, "0")}`;
const hasEvent = (eventsByDate[key]?.length ?? 0) > 0;
return (
<td
key={i}
className={[
hasEvent ? styles.hasEvent : "",
selectedDay?.date === key ? styles.selected : ""
].join(" ")}
onClick={() => handleDayClick(day)}
>
{day}
</td>
);
})}
</tr>
))}
</tbody>
</table>
{selectedDay && (
<div className={`${styles.eventBox} glassBorder`}>
<h3>Événements du {formatDateLetterJS(selectedDay.date)}</h3>
{selectedDay.events.length > 0 ? (
<ul>
{selectedDay.events.map(ev => (
<li key={ev.id}>
<strong>{ev.name}</strong><br />
{ev.description}
</li>
))}
</ul>
) : (
<p>Aucun événement ce jour-.</p>
)}
</div>
)}
</div>
</div>
);
}
export default Calendar;