✨(ui) improve event display and add some niceties to the modal

src/frontend/apps/calendars/src/features/calendar/components/scheduler/EventModal.tsx

@@ -229,6 +229,7 @@ export const EventModal = ({
                 value: cal.url,
                 label: cal.displayName || cal.url,
               }))}
+              clearable={false}
               variant="classic"
               fullWidth
             />

src/frontend/apps/calendars/src/features/calendar/components/scheduler/event-modal-sections/DescriptionSection.tsx

@@ -34,7 +34,7 @@ export const DescriptionSection = ({
         placeholder={t("calendar.event.descriptionPlaceholder")}
         value={description}
         onChange={(e) => onChange(e.target.value)}
-        rows={3}
+        rows={5}
         fullWidth
         variant="classic"
         hideLabel

src/frontend/apps/calendars/src/features/calendar/components/scheduler/event-modal-sections/LocationSection.tsx

@@ -1,6 +1,8 @@
+import { useMemo } from "react";
 import { useTranslation } from "react-i18next";
-import { Input } from "@gouvfr-lasuite/cunningham-react";
+import { Button, Input } from "@gouvfr-lasuite/cunningham-react";
 import { SectionRow } from "./SectionRow";
+import { extractUrl } from "../utils/eventDisplayRules";
 
 interface LocationSectionProps {
   location: string;
@@ -18,6 +20,7 @@ export const LocationSection = ({
   onToggle,
 }: LocationSectionProps) => {
   const { t } = useTranslation();
+  const detectedUrl = useMemo(() => extractUrl(location), [location]);
 
   return (
     <SectionRow
@@ -28,15 +31,30 @@ export const LocationSection = ({
       isExpanded={isExpanded}
       onToggle={onToggle}
     >
-      <Input
-        label={t("calendar.event.location")}
-        hideLabel
-        value={location}
-        placeholder={t("calendar.event.locationPlaceholder")}
-        onChange={(e) => onChange(e.target.value)}
-        variant="classic"
-        fullWidth
-      />
+      <div style={{ display: "flex", alignItems: "center", gap: "4px" }}>
+        <Input
+          label={t("calendar.event.location")}
+          hideLabel
+          value={location}
+          placeholder={t("calendar.event.locationPlaceholder")}
+          onChange={(e) => onChange(e.target.value)}
+          variant="classic"
+          fullWidth
+        />
+        {detectedUrl && (
+          <Button
+            size="small"
+            color="neutral"
+            variant="tertiary"
+            icon={<span className="material-icons">open_in_new</span>}
+            href={detectedUrl}
+            target="_blank"
+            rel="noopener noreferrer"
+          >
+            {t("calendar.event.openLocation", "Open")}
+          </Button>
+        )}
+      </div>
     </SectionRow>
   );
 };

src/frontend/apps/calendars/src/features/calendar/components/scheduler/hooks/useEventForm.ts

@@ -1,4 +1,4 @@
-import { useCallback, useEffect, useState } from "react";
+import { useCallback, useEffect, useRef, useState } from "react";
 import type {
   IcsEvent,
   IcsAttendee,
@@ -11,6 +11,7 @@ import type {
 } from "ts-ics";
 import type { EventCalendarAdapter } from "../../../services/dav/EventCalendarAdapter";
 import type { AttachmentMeta, EventFormSectionId } from "../types";
+import { cleanEventForDisplay } from "../utils/eventDisplayRules";
 import {
   formatDateTimeLocal,
   formatDateLocal,
@@ -40,6 +41,8 @@ export const useEventForm = ({
   const [location, setLocation] = useState("");
   const [startDateTime, setStartDateTime] = useState("");
   const [endDateTime, setEndDateTime] = useState("");
+  // Stash full datetime strings so toggling all-day off restores the original times
+  const savedDateTimesRef = useRef({ start: "", end: "" });
   const [selectedCalendarUrl, setSelectedCalendarUrl] = useState(calendarUrl);
   const [isAllDay, setIsAllDay] = useState(false);
   const [attendees, setAttendees] = useState<IcsAttendee[]>([]);
@@ -60,13 +63,20 @@ export const useEventForm = ({
   // Reset form when event changes
   useEffect(() => {
     setTitle(event?.summary || "");
-    setDescription(event?.description || "");
-    setLocation(event?.location || "");
     setSelectedCalendarUrl(calendarUrl);
     setStatus(event?.status || "CONFIRMED");
     setVisibility(event?.class || "PUBLIC");
     setAvailability(event?.timeTransparent || "OPAQUE");
-    setVideoConferenceUrl(event?.url || "");
+
+    // Clean and deduplicate description / location / url for display
+    const cleaned = cleanEventForDisplay({
+      description: event?.description || "",
+      location: event?.location || "",
+      url: event?.url || "",
+    });
+    setDescription(cleaned.description);
+    setLocation(cleaned.location);
+    setVideoConferenceUrl(cleaned.url);
     setAlarms(event?.alarms || []);
     setAttachments([]);
 
@@ -89,10 +99,10 @@ export const useEventForm = ({
     setIsAllDay(eventIsAllDay);
 
     const initialExpanded = new Set<EventFormSectionId>();
-    if (event?.location) initialExpanded.add("location");
-    if (event?.description) initialExpanded.add("description");
+    if (cleaned.location) initialExpanded.add("location");
+    if (cleaned.description) initialExpanded.add("description");
     if (event?.recurrenceRule) initialExpanded.add("recurrence");
-    if (event?.url) initialExpanded.add("videoConference");
+    if (cleaned.url) initialExpanded.add("videoConference");
 
     if (mode === "create") {
       initialExpanded.add("attendees");
@@ -107,7 +117,10 @@ export const useEventForm = ({
 
     setExpandedSections(initialExpanded);
 
-    // Parse start/end dates
+    // Parse start/end dates and stash full datetime strings for all-day toggle
+    let initStart = "";
+    let initEnd = "";
+
     if (event?.start?.date) {
       const startDate =
         event.start.date instanceof Date
@@ -116,15 +129,15 @@ export const useEventForm = ({
       const isFakeUtc = Boolean(event.start.local?.timezone);
 
       if (eventIsAllDay) {
-        setStartDateTime(formatDateLocal(startDate, isFakeUtc));
+        initStart = formatDateLocal(startDate, isFakeUtc);
       } else {
-        setStartDateTime(formatDateTimeLocal(startDate, isFakeUtc));
+        initStart = formatDateTimeLocal(startDate, isFakeUtc);
       }
     } else {
       if (eventIsAllDay) {
-        setStartDateTime(formatDateLocal(new Date()));
+        initStart = formatDateLocal(new Date());
       } else {
-        setStartDateTime(formatDateTimeLocal(new Date()));
+        initStart = formatDateTimeLocal(new Date());
       }
     }
 
@@ -138,19 +151,28 @@ export const useEventForm = ({
       if (eventIsAllDay) {
         const displayEndDate = new Date(endDate);
         displayEndDate.setUTCDate(displayEndDate.getUTCDate() - 1);
-        setEndDateTime(formatDateLocal(displayEndDate, isFakeUtc));
+        initEnd = formatDateLocal(displayEndDate, isFakeUtc);
       } else {
-        setEndDateTime(formatDateTimeLocal(endDate, isFakeUtc));
+        initEnd = formatDateTimeLocal(endDate, isFakeUtc);
       }
     } else {
       if (eventIsAllDay) {
-        setEndDateTime(formatDateLocal(new Date()));
+        initEnd = formatDateLocal(new Date());
       } else {
         const defaultEnd = new Date();
         defaultEnd.setHours(defaultEnd.getHours() + 1);
-        setEndDateTime(formatDateTimeLocal(defaultEnd));
+        initEnd = formatDateTimeLocal(defaultEnd);
       }
     }
+
+    setStartDateTime(initStart);
+    setEndDateTime(initEnd);
+
+    // For timed events, stash the full datetime so toggling all-day off
+    // can restore the original times instead of defaulting to midnight.
+    if (!eventIsAllDay) {
+      savedDateTimesRef.current = { start: initStart, end: initEnd };
+    }
   }, [event, calendarUrl, mode, organizer?.email]);
 
   const toggleSection = useCallback((sectionId: EventFormSectionId) => {
@@ -201,15 +223,23 @@ export const useEventForm = ({
       setIsAllDay(newIsAllDay);
 
       if (newIsAllDay) {
+        // Stash current datetimes before stripping the time portion
+        savedDateTimesRef.current = { start: startDateTime, end: endDateTime };
         const start = parseDateTimeLocal(startDateTime);
         const end = parseDateTimeLocal(endDateTime);
         setStartDateTime(formatDateLocal(start));
         setEndDateTime(formatDateLocal(end));
       } else {
-        const start = parseDateLocal(startDateTime);
-        const end = parseDateLocal(endDateTime);
-        setStartDateTime(formatDateTimeLocal(start));
-        setEndDateTime(formatDateTimeLocal(end));
+        // Restore stashed datetimes to preserve the original time of day
+        if (savedDateTimesRef.current.start) {
+          setStartDateTime(savedDateTimesRef.current.start);
+          setEndDateTime(savedDateTimesRef.current.end);
+        } else {
+          const start = parseDateLocal(startDateTime);
+          const end = parseDateLocal(endDateTime);
+          setStartDateTime(formatDateTimeLocal(start));
+          setEndDateTime(formatDateTimeLocal(end));
+        }
       }
     },
     [startDateTime, endDateTime],
@@ -219,6 +249,7 @@ export const useEventForm = ({
     // eslint-disable-next-line @typescript-eslint/no-unused-vars
     const { duration: _duration, ...eventWithoutDuration } = event ?? {};
 
+
     if (isAllDay) {
       const startDate = parseDateLocal(startDateTime);
       const endDate = parseDateLocal(endDateTime);

src/frontend/apps/calendars/src/features/calendar/components/scheduler/hooks/useSchedulerInit.ts

@@ -19,6 +19,7 @@ import type { CalDavService } from "../../../services/dav/CalDavService";
 import type { CalDavCalendar } from "../../../services/dav/types/caldav-service";
 import type { EventCalendarEvent, EventCalendarFetchInfo } from "../../../services/dav/types/event-calendar";
 import type { CalendarApi } from "../types";
+import { createEventContent, type EventContentInfo } from "../utils/eventContent";
 
 type ECEvent = EventCalendarEvent;
 
@@ -132,6 +133,9 @@ export const useSchedulerInit = ({
           handlersRef.current.setCurrentDate(info);
         },
 
+        // Custom event content — adapts layout to event duration
+        eventContent: (info: EventContentInfo) => createEventContent(info),
+
         // Event display
         dayMaxEvents: true,
         nowIndicator: true,

src/frontend/apps/calendars/src/features/calendar/components/scheduler/scheduler-theme.scss

@@ -122,21 +122,95 @@
 }
 
 // -----------------------------------------------------------------------------
-// 4. Events styling - Rounded corners, no shadow, bold title
+// 4. Events styling - Custom duration-aware content (see utils/eventContent.ts)
 // -----------------------------------------------------------------------------
 .ec-event {
   border-radius: 6px;
   box-shadow: none;
-  padding: 8px 10px;
+  overflow: hidden;
+
+  padding-left: 4px !important;
+
+  // Compact (≤ 30 min): vertically center the single line
+  &:has(.ec-custom--compact) {
+    display: flex;
+    align-items: center;
+  }
+
+  // Medium / large: small top padding
+  &:has(.ec-custom--medium),
+  &:has(.ec-custom--large) {
+    padding-top: 2px;
+  }
 }
 
-.ec-event-title {
+.ec-event-body {
+  overflow: hidden;
+  width: 100%;
+}
+
+// --- Shared custom-content styles ---
+.ec-custom__title {
   font-weight: 600;
 }
 
-.ec-event-time {
+.ec-custom__details,
+.ec-custom__time {
   font-weight: 400;
-  opacity: 0.95;
+  opacity: 0.9;
+}
+
+// --- Compact: ≤ 30 min — single line ---
+.ec-custom--compact {
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: clip;
+  font-size: 0.75rem;
+  line-height: 1.4;
+}
+
+// --- Medium: 45–60 min — two truncated lines ---
+.ec-custom--medium {
+  overflow: hidden;
+  font-size: 0.8rem;
+  line-height: 1.30;
+
+  .ec-custom__title,
+  .ec-custom__details {
+    white-space: nowrap;
+    overflow: hidden;
+    text-overflow: clip;
+  }
+}
+
+// --- Large: 75 min+ — title wraps up to 2 lines, then details ---
+.ec-custom--large {
+  overflow: hidden;
+  font-size: 0.85rem;
+  line-height: 1.35;
+
+  .ec-custom__title {
+    display: -webkit-box;
+    -webkit-line-clamp: 2;
+    -webkit-box-orient: vertical;
+    overflow: hidden;
+  }
+
+  .ec-custom__details {
+    white-space: nowrap;
+    overflow: hidden;
+    text-overflow: clip;
+    margin-top: 1px;
+  }
+}
+
+// --- All-day events ---
+.ec-custom--allday {
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: clip;
+  font-size: 0.8rem;
+  line-height: 1.3;
 }
 
 // -----------------------------------------------------------------------------

src/frontend/apps/calendars/src/features/calendar/components/scheduler/utils/eventContent.ts

@@ -0,0 +1,99 @@
+/**
+ * Custom event content renderer for the scheduler.
+ *
+ * Adapts event display based on duration:
+ *  - 15–30 min  → single line: "Title, HH:MM"
+ *  - 45–60 min  → two lines: title  /  time + location
+ *  - 75 min+    → title (up to 2 lines)  /  time + location
+ */
+
+import type { CalDavExtendedProps } from '../../../services/dav/EventCalendarAdapter';
+import type {
+  EventCalendarEvent,
+  EventCalendarContent,
+} from '../../../services/dav/types/event-calendar';
+import { cleanEventForDisplay } from './eventDisplayRules';
+
+export interface EventContentInfo {
+  event: EventCalendarEvent;
+  timeText: string;
+  view: unknown;
+}
+
+const esc = (s: string): string =>
+  s
+    .replace(/&/g, '&')
+    .replace(/</g, '&lt;')
+    .replace(/>/g, '&gt;')
+    .replace(/"/g, '&quot;');
+
+const fmtTime = (d: Date): string =>
+  `${String(d.getHours()).padStart(2, '0')}:${String(d.getMinutes()).padStart(2, '0')}`;
+
+export const createEventContent = (
+  info: EventContentInfo,
+): EventCalendarContent => {
+  const { event } = info;
+  const title = typeof event.title === 'string' ? event.title : '';
+
+  // All-day events: just show the title
+  if (event.allDay) {
+    return {
+      html: `<div class="ec-custom ec-custom--allday"><span class="ec-custom__title">${esc(title)}</span></div>`,
+    };
+  }
+
+  const start =
+    event.start instanceof Date ? event.start : new Date(event.start);
+  const end = event.end
+    ? event.end instanceof Date
+      ? event.end
+      : new Date(event.end)
+    : start;
+  const durationMin = Math.round(
+    (end.getTime() - start.getTime()) / 60_000,
+  );
+
+  const extProps = event.extendedProps as CalDavExtendedProps | undefined;
+  const cleaned = cleanEventForDisplay({
+    description: extProps?.description ?? '',
+    location: extProps?.location ?? '',
+    url: extProps?.url ?? '',
+  });
+  const location = cleaned.location;
+  const time = fmtTime(start);
+
+  // ≤ 30 min — single line: "Title, HH:MM"
+  if (durationMin <= 30) {
+    return {
+      html:
+        `<div class="ec-custom ec-custom--compact">` +
+        `<span class="ec-custom__title">${esc(title)}</span>` +
+        `<span class="ec-custom__sep">, </span>` +
+        `<span class="ec-custom__time">${esc(time)}</span>` +
+        `</div>`,
+    };
+  }
+
+  const details = location ? `${time}, ${location}` : time;
+
+  // 45–60 min — two single lines
+  if (durationMin <= 60) {
+    return {
+      html:
+        `<div class="ec-custom ec-custom--medium">` +
+        `<div class="ec-custom__title">${esc(title)}</div>` +
+        `<div class="ec-custom__details">${esc(details)}</div>` +
+        `</div>`,
+    };
+  }
+
+  // 75 min+ — title wraps up to 2 lines, then details
+  return {
+    html:
+      `<div class="ec-custom ec-custom--large">` +
+      `<div class="ec-custom__title">${esc(title)}</div>` +
+      `<div class="ec-custom__details">${esc(details)}</div>` +
+      `</div>`,
+  };
+};

src/frontend/apps/calendars/src/features/calendar/components/scheduler/utils/eventDisplayRules.ts

@@ -0,0 +1,103 @@
+/**
+ * Event display rules — clean and deduplicate fields before rendering.
+ *
+ * Single entry point: cleanEventForDisplay()
+ */
+
+// ---------------------------------------------------------------------------
+// Constants
+// ---------------------------------------------------------------------------
+
+/** Prefixes stripped from the Location field (case-insensitive). */
+const LOCATION_PREFIXES_TO_STRIP = [
+  'Pour participer à la visioconférence, cliquez sur ce lien : ',
+];
+
+/**
+ * Embedded conference block delimited by ~:~ markers.
+ * Contains a video-conference URL. Providers inject this in descriptions.
+ */
+const CONFERENCE_BLOCK_RE =
+  /-::~:~::~:~[:~]*::~:~::-\s*\n.*?(https:\/\/\S+).*?\n.*?-::~:~::~:~[:~]*::~:~::-/s;
+
+const URL_RE = /https?:\/\/[^\s]+/i;
+
+// ---------------------------------------------------------------------------
+// Types
+// ---------------------------------------------------------------------------
+
+export type EventDisplayFields = {
+  description: string;
+  location: string;
+  url: string;
+};
+
+// ---------------------------------------------------------------------------
+// Public API
+// ---------------------------------------------------------------------------
+
+/**
+ * Clean and deduplicate event fields for display.
+ *
+ * Applies in order:
+ *  1. Trim whitespace on all fields
+ *  2. Strip known prefixes from location
+ *  3. Extract embedded conference URL from description → url (if url empty)
+ *  4. Deduplicate: desc==location → empty desc,
+ *     location==url → empty location, desc==url → empty desc
+ */
+export const cleanEventForDisplay = (
+  raw: EventDisplayFields,
+): EventDisplayFields => {
+  let description = raw.description.trim();
+  let location = stripLocationPrefixes(raw.location.trim());
+  let url = raw.url.trim();
+
+  // Extract embedded conference block from description
+  if (!url) {
+    const extracted = extractConferenceBlock(description);
+    if (extracted.url) {
+      description = extracted.description;
+      url = extracted.url;
+    }
+  }
+
+  // Deduplicate across fields
+  if (description && description === location) description = '';
+  if (location && location === url) location = '';
+  if (description && description === url) description = '';
+
+  return { description, location, url };
+};
+
+/**
+ * Extract the first URL found anywhere in a string.
+ */
+export const extractUrl = (text: string): string | null => {
+  const match = text.match(URL_RE);
+  return match ? match[0] : null;
+};
+
+// ---------------------------------------------------------------------------
+// Internal helpers
+// ---------------------------------------------------------------------------
+
+const stripLocationPrefixes = (value: string): string => {
+  for (const prefix of LOCATION_PREFIXES_TO_STRIP) {
+    if (value.toLowerCase().startsWith(prefix.toLowerCase())) {
+      return value.slice(prefix.length).trim();
+    }
+  }
+  return value;
+};
+
+const extractConferenceBlock = (
+  text: string,
+): { description: string; url: string | null } => {
+  const match = text.match(CONFERENCE_BLOCK_RE);
+  if (!match) return { description: text, url: null };
+  return {
+    description: text.replace(match[0], '').trim(),
+    url: match[1] ?? null,
+  };
+};

src/frontend/apps/calendars/src/features/i18n/translations.json

@@ -113,6 +113,7 @@
           "titlePlaceholder": "Event title",
           "location": "Location",
           "locationPlaceholder": "Location",
+          "openLocation": "Open",
           "description": "Description",
           "descriptionPlaceholder": "Description",
           "start": "Start",
@@ -738,6 +739,7 @@
           "titlePlaceholder": "Titre de l'événement",
           "location": "Lieu",
           "locationPlaceholder": "Lieu",
+          "openLocation": "Ouvrir",
           "description": "Description",
           "descriptionPlaceholder": "Description",
           "start": "Début",
@@ -1110,6 +1112,7 @@
           "titlePlaceholder": "Evenement titel",
           "location": "Locatie",
           "locationPlaceholder": "Locatie",
+          "openLocation": "Openen",
           "description": "Beschrijving",
           "descriptionPlaceholder": "Beschrijving",
           "start": "Start",