From dfb8bd23ca3d2e3429f56bab6559a4100ef3253d Mon Sep 17 00:00:00 2001
From: Ronan Lenouvel <ronan.lenouvel@orange.com>
Date: Mon, 12 Oct 2026 11:55:01 +0200
Subject: [PATCH 1/2] =?UTF-8?q?=E2=9C=85=20test(MessagesPageController):?=
 =?UTF-8?q?=20le=20rappel=20d'=C3=A9change=20de=20cr=C3=A9neau=20sur=20les?=
 =?UTF-8?q?=20brouillons,=20absent=20des=20fils=20et=20quand=20on=20ne=20p?=
 =?UTF-8?q?eut=20pas=20=C3=A9crire=20(#456)?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../Controller/MessagesPageControllerTest.php | 30 +++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/tests/Messaging/Controller/MessagesPageControllerTest.php b/tests/Messaging/Controller/MessagesPageControllerTest.php
index 97e413e3..7afbbfe4 100644
--- a/tests/Messaging/Controller/MessagesPageControllerTest.php
+++ b/tests/Messaging/Controller/MessagesPageControllerTest.php
@@ -591,6 +591,36 @@ public function testDirectComposeRendersAnEmptyThreadAddressedToThePersonWithout
         self::assertSame([], $this->reader->listFor($alice->id(), 'active'), 'ouvrir la page ne crée rien');
     }
 
+    #[Test]
+    public function testDraftPagesRemindToGoThroughBookTheRoomForASlotExchangeButExistingThreadsDoNot(): void
+    {
+        $alice = $this->user('Alice');
+        $this->group('Alpha', $alice);
+        $target = $this->group('Beta Rockers');
+        $bob = $this->user('Bob');
+        $this->loginAs($alice);
+
+        foreach ([
+            $this->controller->compose($this->request(), (string) $target->id())->body(),
+            $this->controller->directCompose($this->request(), (string) $bob->id())->body(),
+        ] as $body) {
+            self::assertStringContainsString('Pour échanger un créneau', $body);
+            self::assertStringContainsString('<a href="/bookings">Réserver le local</a>', $body);
+        }
+
+        self::assertStringNotContainsString('Pour échanger un créneau', $this->controller->list($this->request())->body());
+    }
+
+    #[Test]
+    public function testTheExchangeReminderIsHiddenWhenThePersonCannotWriteFromAnyGroup(): void
+    {
+        $alice = $this->user('Alice');
+        $target = $this->group('Beta Rockers');
+        $this->loginAs($alice);
+
+        self::assertStringNotContainsString('Pour échanger un créneau', $this->controller->compose($this->request(), (string) $target->id())->body());
+    }
+
     #[Test]
     public function testDirectComposeRefusesYourselfUnknownInactiveAndMalformedTargets(): void
     {

From 0934761c46d581d2b5850e75f1f876e47c9103a3 Mon Sep 17 00:00:00 2001
From: Ronan Lenouvel <ronan.lenouvel@orange.com>
Date: Mon, 12 Oct 2026 11:55:02 +0200
Subject: [PATCH 2/2] =?UTF-8?q?=E2=9C=A8=20feat(Messagerie):=20rappeler=20?=
 =?UTF-8?q?de=20passer=20par=20R=C3=A9server=20le=20local=20pour=20=C3=A9c?=
 =?UTF-8?q?hanger=20un=20cr=C3=A9neau=20(#456)?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 public/assets/css/pages/messages.css | 12 ++++++++++++
 templates/messages/index.php         |  4 ++++
 2 files changed, 16 insertions(+)

diff --git a/public/assets/css/pages/messages.css b/public/assets/css/pages/messages.css
index 80f30bf2..eb202b6e 100644
--- a/public/assets/css/pages/messages.css
+++ b/public/assets/css/pages/messages.css
@@ -391,6 +391,18 @@ rb-composer {
   text-align: center;
 }
 
+.rb-chat-hint {
+  margin: 0;
+  padding: var(--rb-space-2) var(--rb-space-3);
+  color: var(--rb-text-3);
+  font-size: 0.8125rem;
+  text-align: center;
+}
+
+.rb-chat-hint a {
+  color: var(--rb-accent);
+}
+
 .rb-chat-label {
   margin: 0;
   color: var(--rb-text-3);
diff --git a/templates/messages/index.php b/templates/messages/index.php
index e38f520a..e4df4921 100644
--- a/templates/messages/index.php
+++ b/templates/messages/index.php
@@ -41,6 +41,10 @@
                 <?php if ($draft !== null && $draft['blocked']): ?>
                     <p class="rb-chat-notice" role="alert">Vous devez appartenir à un autre groupe pour écrire à celui-ci.</p>
                 <?php endif; ?>
+                <?php if ($draft !== null && !$draft['blocked']): ?>
+                    <?php /* #456 : un échange de créneau décidé ici n'arriverait jamais dans le planning. */ ?>
+                    <p class="rb-chat-hint">Pour échanger un créneau, passez par <a href="/bookings">Réserver le local</a> : le planning reste à jour.</p>
+                <?php endif; ?>
                 <?php /* #187 : ancre de hauteur nulle posée entre le fil et la ligne d'état ; le bouton flotte juste au-dessus. */ ?>
                 <div class="rb-chat-new-anchor"><button type="button" class="rb-chat-new-messages" data-chat-new-messages hidden>↓ Nouveaux messages</button></div>
                 <p class="rb-chat-status<?= $thread !== null && $thread['typing'] ? ' rb-chat-status--typing' : '' ?>" data-chat-status aria-live="polite"><?= $thread !== null ? e($thread['status']) : '' ?></p>