From 4f8dbeffbb00c10d883c7be43c9da8bac18583b0 Mon Sep 17 00:00:00 2001
From: Sylvain Zimmer <sylvain@sylvainzimmer.com>
Date: Thu, 19 Feb 2026 20:44:49 +0100
Subject: [PATCH] =?UTF-8?q?=F0=9F=90=9B(calendars)=20add=20default=20calen?=
 =?UTF-8?q?dar=20color?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/backend/calendars/settings.py             |  5 +++++
 src/backend/core/api/serializers.py           |  2 +-
 src/backend/core/api/viewsets.py              |  2 +-
 src/backend/core/services/caldav_service.py   | 19 ++++++++++++++-----
 .../src/features/i18n/translations.json       |  3 +++
 5 files changed, 24 insertions(+), 7 deletions(-)

diff --git a/src/backend/calendars/settings.py b/src/backend/calendars/settings.py
index 09e237b..d0f8010 100755
--- a/src/backend/calendars/settings.py
+++ b/src/backend/calendars/settings.py
@@ -127,6 +127,11 @@ class Base(Configuration):
         environ_name="TRANSLATIONS_JSON_PATH",
         environ_prefix=None,
     )
+    DEFAULT_CALENDAR_COLOR = values.Value(
+        "#3788d8",
+        environ_name="DEFAULT_CALENDAR_COLOR",
+        environ_prefix=None,
+    )
 
     # Security
     ALLOWED_HOSTS = values.ListValue([])
diff --git a/src/backend/core/api/serializers.py b/src/backend/core/api/serializers.py
index 05cdc1e..0441a3b 100644
--- a/src/backend/core/api/serializers.py
+++ b/src/backend/core/api/serializers.py
@@ -118,7 +118,7 @@ class CalendarCreateSerializer(serializers.Serializer):  # pylint: disable=abstr
     """Serializer for creating a Calendar (CalDAV only, no Django model)."""
 
     name = serializers.CharField(max_length=255)
-    color = serializers.CharField(max_length=7, required=False, default="#3174ad")
+    color = serializers.CharField(max_length=7, required=False, default="")
     description = serializers.CharField(required=False, default="")
 
 
diff --git a/src/backend/core/api/viewsets.py b/src/backend/core/api/viewsets.py
index 1c6b6e5..dd23790 100644
--- a/src/backend/core/api/viewsets.py
+++ b/src/backend/core/api/viewsets.py
@@ -287,7 +287,7 @@ class CalendarViewSet(viewsets.GenericViewSet):
         caldav_path = service.create_calendar(
             user=request.user,
             name=serializer.validated_data["name"],
-            color=serializer.validated_data.get("color", "#3174ad"),
+            color=serializer.validated_data.get("color", ""),
         )
 
         return drf_response.Response(
diff --git a/src/backend/core/services/caldav_service.py b/src/backend/core/services/caldav_service.py
index 8a4c3bb..7c1d6b2 100644
--- a/src/backend/core/services/caldav_service.py
+++ b/src/backend/core/services/caldav_service.py
@@ -207,7 +207,7 @@ class CalDAVClient:
             )
 
             name = props.get(DisplayName.tag, "Calendar")
-            color = props.get(CalendarColor.tag, "#3174ad")
+            color = props.get(CalendarColor.tag, settings.DEFAULT_CALENDAR_COLOR)
             description = props.get(CalendarDescription.tag, "")
 
             # Clean up color (CalDAV may return with alpha channel like #RRGGBBAA)
@@ -517,16 +517,25 @@ class CalendarService:
 
     def create_default_calendar(self, user) -> str:
         """Create a default calendar for a user. Returns the caldav_path."""
+        from core.services.translation_service import TranslationService  # noqa: PLC0415
+
         calendar_id = str(uuid4())
-        calendar_name = "Mon calendrier"
-        return self.caldav.create_calendar(user, calendar_name, calendar_id)
+        lang = TranslationService.resolve_language(email=user.email)
+        calendar_name = TranslationService.t(
+            "calendar.list.defaultCalendarName", lang
+        )
+        return self.caldav.create_calendar(
+            user, calendar_name, calendar_id, color=settings.DEFAULT_CALENDAR_COLOR
+        )
 
     def create_calendar(
-        self, user, name: str, color: str = "#3174ad"
+        self, user, name: str, color: str = ""
     ) -> str:
         """Create a new calendar for a user. Returns the caldav_path."""
         calendar_id = str(uuid4())
-        return self.caldav.create_calendar(user, name, calendar_id, color=color)
+        return self.caldav.create_calendar(
+            user, name, calendar_id, color=color or settings.DEFAULT_CALENDAR_COLOR
+        )
 
     def get_events(self, user, caldav_path: str, start=None, end=None) -> list:
         """Get events from a calendar. Returns parsed event data."""
diff --git a/src/frontend/apps/calendars/src/features/i18n/translations.json b/src/frontend/apps/calendars/src/features/i18n/translations.json
index 4737336..e75e6d8 100644
--- a/src/frontend/apps/calendars/src/features/i18n/translations.json
+++ b/src/frontend/apps/calendars/src/features/i18n/translations.json
@@ -181,6 +181,7 @@
           }
         },
         "list": {
+          "defaultCalendarName": "My calendar",
           "myCalendars": "My calendars",
           "sharedCalendars": "Shared calendars",
           "shared": "(shared)",
@@ -914,6 +915,7 @@
           }
         },
         "list": {
+          "defaultCalendarName": "Mon calendrier",
           "myCalendars": "Mes calendriers",
           "sharedCalendars": "Calendriers partagés",
           "shared": "(partagé)",
@@ -1394,6 +1396,7 @@
           }
         },
         "list": {
+          "defaultCalendarName": "Mijn kalender",
           "myCalendars": "Mijn kalenders",
           "sharedCalendars": "Gedeelde kalenders",
           "shared": "(gedeeld)",