Add settings page and configurable network map types.

Let users define sector/circle labels and geometry per map type, choose a type when creating maps, and sync types through local backup and API migrations.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/contacts/serializers.py

@@ -1,5 +1,6 @@
 from rest_framework import serializers
-from .models import Contact, Relation, NetworkMap, NetworkMapMembership
+from .models import Contact, Relation, NetworkMap, NetworkMapMembership, NetworkMapType
+from .map_type_validation import validate_map_type_payload
 
 
 class ContactSerializer(serializers.ModelSerializer):
@@ -43,17 +44,52 @@ class RelationSerializer(serializers.ModelSerializer):
         return data
 
 
+class NetworkMapTypeSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = NetworkMapType
+        fields = [
+            'id', 'name', 'sectors', 'circles', 'is_default',
+            'created_at', 'updated_at',
+        ]
+        read_only_fields = ['id', 'is_default', 'created_at', 'updated_at']
+
+    def validate(self, data):
+        sectors = data.get('sectors', getattr(self.instance, 'sectors', None))
+        circles = data.get('circles', getattr(self.instance, 'circles', None))
+        errors = validate_map_type_payload(sectors, circles)
+        if errors:
+            raise serializers.ValidationError(errors)
+        return data
+
+    def create(self, validated_data):
+        if NetworkMapType.objects.filter(is_default=True).exists():
+            validated_data['is_default'] = False
+        return super().create(validated_data)
+
+
 class NetworkMapSerializer(serializers.ModelSerializer):
     memberships_count = serializers.SerializerMethodField()
+    map_type = serializers.PrimaryKeyRelatedField(
+        queryset=NetworkMapType.objects.all(),
+        required=False,
+    )
 
     class Meta:
         model = NetworkMap
         fields = [
-            'id', 'name', 'description',
+            'id', 'name', 'description', 'map_type',
             'created_at', 'updated_at', 'memberships_count',
         ]
         read_only_fields = ['id', 'created_at', 'updated_at', 'memberships_count']
 
+    def validate(self, data):
+        if not data.get('map_type') and not getattr(self.instance, 'map_type_id', None):
+            default_type = NetworkMapType.objects.filter(is_default=True).first()
+            if not default_type:
+                raise serializers.ValidationError({'map_type': 'Нет типа карты по умолчанию.'})
+            data['map_type'] = default_type
+        return data
+
     def get_memberships_count(self, obj):
         return obj.memberships.count()