From da7113ce7eca52ea32de22b0a8f8b7f9dedd1c71 Mon Sep 17 00:00:00 2001
From: Ivan <8611739+IRBorisov@users.noreply.github.com>
Date: Wed, 17 Jul 2024 12:56:01 +0300
Subject: [PATCH] Refactoring: preparing backend for oss pt1

---
 .vscode/settings.json                         |   4 +-
 README.md                                     |   4 +-
 rsconcept/backend/apps/oss/__init__.py        |   0
 rsconcept/backend/apps/oss/admin.py           |  14 +++
 rsconcept/backend/apps/oss/apps.py            |   8 ++
 .../apps/oss/migrations/0001_initial.py       |  69 +++++++++++
 .../backend/apps/oss/migrations/__init__.py   |   0
 rsconcept/backend/apps/oss/models/Argument.py |  27 +++++
 .../backend/apps/oss/models/Operation.py      |  71 +++++++++++
 .../apps/oss/models/SynthesisSubstitution.py  |  36 ++++++
 rsconcept/backend/apps/oss/models/__init__.py |   8 ++
 rsconcept/backend/apps/oss/models/api_OSS.py  |  58 +++++++++
 .../backend/apps/oss/serializers/__init__.py  |  11 ++
 .../apps/oss/serializers/data_access.py       |  97 +++++++++++++++
 .../apps/oss/serializers/schema_typing.py     |  10 ++
 rsconcept/backend/apps/oss/urls.py            |  12 ++
 rsconcept/backend/apps/oss/views/__init__.py  |   2 +
 rsconcept/backend/apps/oss/views/oss.py       | 110 ++++++++++++++++++
 .../0008_alter_libraryitem_item_type.py       |  18 +++
 .../backend/apps/rsform/models/LibraryItem.py |  13 ++-
 .../backend/apps/rsform/models/api_RSForm.py  |   3 +-
 .../apps/rsform/models/api_RSLanguage.py      |   3 +-
 .../apps/rsform/serializers/__init__.py       |   1 +
 .../backend/apps/rsform/serializers/basics.py |   3 +-
 .../apps/rsform/serializers/data_access.py    |   3 +-
 .../apps/rsform/serializers/io_files.py       |   3 +-
 .../apps/rsform/serializers/io_pyconcept.py   |   3 +-
 .../apps/rsform/tests/s_views/t_cctext.py     |   2 +-
 .../rsform/tests/s_views/t_constituents.py    |   3 +-
 .../apps/rsform/tests/s_views/t_library.py    |   5 +-
 .../apps/rsform/tests/s_views/t_operations.py |   3 +-
 .../apps/rsform/tests/s_views/t_rsforms.py    |   5 +-
 .../apps/rsform/tests/s_views/t_rslang.py     |   2 +-
 .../apps/rsform/tests/s_views/t_versions.py   |   3 +-
 .../backend/apps/rsform/views/constituents.py |   3 +-
 .../backend/apps/rsform/views/library.py      |   3 +-
 .../backend/apps/rsform/views/rsforms.py      |   5 +-
 .../backend/apps/rsform/views/versions.py     |   3 +-
 rsconcept/backend/apps/users/messages.py      |  14 ---
 rsconcept/backend/apps/users/serializers.py   |   2 +-
 rsconcept/backend/apps/users/tests/t_views.py |   2 +-
 rsconcept/backend/project/settings.py         |   1 +
 .../rsform/tests => shared}/EndpointTester.py |   0
 rsconcept/backend/shared/__init__.py          |   1 +
 .../{apps/rsform => shared}/messages.py       |  16 +++
 .../{apps/rsform => shared}/permissions.py    |  30 +++--
 .../rsform/tests => shared}/testing_utils.py  |   0
 47 files changed, 634 insertions(+), 60 deletions(-)
 create mode 100644 rsconcept/backend/apps/oss/__init__.py
 create mode 100644 rsconcept/backend/apps/oss/admin.py
 create mode 100644 rsconcept/backend/apps/oss/apps.py
 create mode 100644 rsconcept/backend/apps/oss/migrations/0001_initial.py
 create mode 100644 rsconcept/backend/apps/oss/migrations/__init__.py
 create mode 100644 rsconcept/backend/apps/oss/models/Argument.py
 create mode 100644 rsconcept/backend/apps/oss/models/Operation.py
 create mode 100644 rsconcept/backend/apps/oss/models/SynthesisSubstitution.py
 create mode 100644 rsconcept/backend/apps/oss/models/__init__.py
 create mode 100644 rsconcept/backend/apps/oss/models/api_OSS.py
 create mode 100644 rsconcept/backend/apps/oss/serializers/__init__.py
 create mode 100644 rsconcept/backend/apps/oss/serializers/data_access.py
 create mode 100644 rsconcept/backend/apps/oss/serializers/schema_typing.py
 create mode 100644 rsconcept/backend/apps/oss/urls.py
 create mode 100644 rsconcept/backend/apps/oss/views/__init__.py
 create mode 100644 rsconcept/backend/apps/oss/views/oss.py
 create mode 100644 rsconcept/backend/apps/rsform/migrations/0008_alter_libraryitem_item_type.py
 delete mode 100644 rsconcept/backend/apps/users/messages.py
 rename rsconcept/backend/{apps/rsform/tests => shared}/EndpointTester.py (100%)
 create mode 100644 rsconcept/backend/shared/__init__.py
 rename rsconcept/backend/{apps/rsform => shared}/messages.py (79%)
 rename rsconcept/backend/{apps/rsform => shared}/permissions.py (80%)
 rename rsconcept/backend/{apps/rsform/tests => shared}/testing_utils.py (100%)

diff --git a/.vscode/settings.json b/.vscode/settings.json
index a5c1a707..90b939b8 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -11,7 +11,9 @@
     "--multi-line",
     "3",
     "--project",
-    "apps"
+    "apps",
+    "--project",
+    "shared"
   ],
   "autopep8.args": [
     "--max-line-length",
diff --git a/README.md b/README.md
index a6b96af3..51d4dd10 100644
--- a/README.md
+++ b/README.md
@@ -69,6 +69,7 @@ This readme file is used mostly to document project dependencies
   - Backticks
   - Svg Preview
   - TODO Highlight v2
+  - Prettier
   </pre>
 </details>
 <details>
@@ -114,8 +115,9 @@ This readme file is used mostly to document project dependencies
   <pre>
   - Pylance
   - Pylint
-  - Django
   - autopep8
+  - isort
+  - Django
   - SQLite
   </pre>
 </details>
diff --git a/rsconcept/backend/apps/oss/__init__.py b/rsconcept/backend/apps/oss/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/rsconcept/backend/apps/oss/admin.py b/rsconcept/backend/apps/oss/admin.py
new file mode 100644
index 00000000..3bf56a23
--- /dev/null
+++ b/rsconcept/backend/apps/oss/admin.py
@@ -0,0 +1,14 @@
+''' Admin view: OperationSchema. '''
+from django.contrib import admin
+
+from . import models
+
+
+class OperationAdmin(admin.ModelAdmin):
+    ''' Admin model: Operation. '''
+    ordering = ['oss']
+    list_display = ['oss', 'operation_type', 'result', 'alias', 'title', 'comment', 'position_x', 'position_y']
+    search_fields = ['operation_type', 'title', 'alias']
+
+
+admin.site.register(models.Operation, OperationAdmin)
diff --git a/rsconcept/backend/apps/oss/apps.py b/rsconcept/backend/apps/oss/apps.py
new file mode 100644
index 00000000..540eca26
--- /dev/null
+++ b/rsconcept/backend/apps/oss/apps.py
@@ -0,0 +1,8 @@
+''' Application: Operation Schema. '''
+from django.apps import AppConfig
+
+
+class RsformConfig(AppConfig):
+    ''' Application config. '''
+    default_auto_field = 'django.db.models.BigAutoField'
+    name = 'apps.oss'
diff --git a/rsconcept/backend/apps/oss/migrations/0001_initial.py b/rsconcept/backend/apps/oss/migrations/0001_initial.py
new file mode 100644
index 00000000..e5fc31f8
--- /dev/null
+++ b/rsconcept/backend/apps/oss/migrations/0001_initial.py
@@ -0,0 +1,69 @@
+# Generated by Django 5.0.7 on 2024-07-17 09:51
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        ('rsform', '0008_alter_libraryitem_item_type'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Operation',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('operation_type', models.CharField(choices=[
+                 ('input', 'Input'), ('synthesis', 'Synthesis')], default='input', max_length=10, verbose_name='Тип')),
+                ('alias', models.CharField(blank=True, max_length=255, verbose_name='Шифр')),
+                ('title', models.TextField(blank=True, verbose_name='Название')),
+                ('comment', models.TextField(blank=True, verbose_name='Комментарий')),
+                ('position_x', models.FloatField(default=0, verbose_name='Положение по горизонтали')),
+                ('position_y', models.FloatField(default=0, verbose_name='Положение по вертикали')),
+                ('oss', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE,
+                 related_name='items', to='rsform.libraryitem', verbose_name='Схема синтеза')),
+                ('result', models.ForeignKey(null=True, on_delete=django.db.models.deletion.SET_NULL,
+                 related_name='producer', to='rsform.libraryitem', verbose_name='Связанная КС')),
+            ],
+            options={
+                'verbose_name': 'Операция',
+                'verbose_name_plural': 'Операции',
+            },
+        ),
+        migrations.CreateModel(
+            name='SynthesisSubstitution',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('transfer_term', models.BooleanField(default=False, verbose_name='Перенос термина')),
+                ('operation', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE,
+                 to='oss.operation', verbose_name='Операция')),
+                ('original', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE,
+                 related_name='as_original', to='rsform.constituenta', verbose_name='Удаляемая конституента')),
+                ('substitution', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE,
+                 related_name='as_substitute', to='rsform.constituenta', verbose_name='Замещающая конституента')),
+            ],
+            options={
+                'verbose_name': 'Отождествление синтеза',
+                'verbose_name_plural': 'Таблицы отождествлений',
+            },
+        ),
+        migrations.CreateModel(
+            name='Argument',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('argument', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE,
+                 related_name='descendants', to='oss.operation', verbose_name='Аргумент')),
+                ('operation', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE,
+                 related_name='arguments', to='oss.operation', verbose_name='Операция')),
+            ],
+            options={
+                'verbose_name': 'Аргумент',
+                'verbose_name_plural': 'Аргументы операций',
+                'unique_together': {('operation', 'argument')},
+            },
+        ),
+    ]
diff --git a/rsconcept/backend/apps/oss/migrations/__init__.py b/rsconcept/backend/apps/oss/migrations/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/rsconcept/backend/apps/oss/models/Argument.py b/rsconcept/backend/apps/oss/models/Argument.py
new file mode 100644
index 00000000..3282113d
--- /dev/null
+++ b/rsconcept/backend/apps/oss/models/Argument.py
@@ -0,0 +1,27 @@
+''' Models: Operation Argument in OSS. '''
+from django.db.models import CASCADE, ForeignKey, Model
+
+
+class Argument(Model):
+    ''' Operation Argument.'''
+    operation: ForeignKey = ForeignKey(
+        verbose_name='Операция',
+        to='oss.Operation',
+        on_delete=CASCADE,
+        related_name='arguments'
+    )
+    argument: ForeignKey = ForeignKey(
+        verbose_name='Аргумент',
+        to='oss.Operation',
+        on_delete=CASCADE,
+        related_name='descendants'
+    )
+
+    class Meta:
+        ''' Model metadata. '''
+        verbose_name = 'Аргумент'
+        verbose_name_plural = 'Аргументы операций'
+        unique_together = [['operation', 'argument']]
+
+    def __str__(self) -> str:
+        return f'{self.argument.pk} -> {self.operation.pk}'
diff --git a/rsconcept/backend/apps/oss/models/Operation.py b/rsconcept/backend/apps/oss/models/Operation.py
new file mode 100644
index 00000000..54b16740
--- /dev/null
+++ b/rsconcept/backend/apps/oss/models/Operation.py
@@ -0,0 +1,71 @@
+''' Models: Operation in OSS. '''
+from django.db.models import (
+    CASCADE,
+    SET_NULL,
+    CharField,
+    FloatField,
+    ForeignKey,
+    Model,
+    TextChoices,
+    TextField
+)
+
+
+class OperationType(TextChoices):
+    ''' Type of operation. '''
+    INPUT = 'input'
+    SYNTHESIS = 'synthesis'
+
+
+class Operation(Model):
+    ''' Operational schema Unit.'''
+    oss: ForeignKey = ForeignKey(
+        verbose_name='Схема синтеза',
+        to='rsform.LibraryItem',
+        on_delete=CASCADE,
+        related_name='items'
+    )
+    operation_type: CharField = CharField(
+        verbose_name='Тип',
+        max_length=10,
+        choices=OperationType.choices,
+        default=OperationType.INPUT
+    )
+    result: ForeignKey = ForeignKey(
+        verbose_name='Связанная КС',
+        to='rsform.LibraryItem',
+        null=True,
+        on_delete=SET_NULL,
+        related_name='producer'
+    )
+
+    alias: CharField = CharField(
+        verbose_name='Шифр',
+        max_length=255,
+        blank=True
+    )
+    title: TextField = TextField(
+        verbose_name='Название',
+        blank=True
+    )
+    comment: TextField = TextField(
+        verbose_name='Комментарий',
+        blank=True
+    )
+
+    position_x: FloatField = FloatField(
+        verbose_name='Положение по горизонтали',
+        default=0
+    )
+    position_y: FloatField = FloatField(
+        verbose_name='Положение по вертикали',
+        default=0
+    )
+
+    class Meta:
+        ''' Model metadata. '''
+        verbose_name = 'Операция'
+        verbose_name_plural = 'Операции'
+
+    def __str__(self) -> str:
+        return f'Операция {self.alias}'
diff --git a/rsconcept/backend/apps/oss/models/SynthesisSubstitution.py b/rsconcept/backend/apps/oss/models/SynthesisSubstitution.py
new file mode 100644
index 00000000..61c2da22
--- /dev/null
+++ b/rsconcept/backend/apps/oss/models/SynthesisSubstitution.py
@@ -0,0 +1,36 @@
+''' Models: SynthesisSubstitution. '''
+from django.db.models import CASCADE, BooleanField, ForeignKey, Model
+
+
+class SynthesisSubstitution(Model):
+    ''' Substitutions as part of Synthesis operation in OSS.'''
+    operation: ForeignKey = ForeignKey(
+        verbose_name='Операция',
+        to='oss.Operation',
+        on_delete=CASCADE
+    )
+
+    original: ForeignKey = ForeignKey(
+        verbose_name='Удаляемая конституента',
+        to='rsform.Constituenta',
+        on_delete=CASCADE,
+        related_name='as_original'
+    )
+    substitution: ForeignKey = ForeignKey(
+        verbose_name='Замещающая конституента',
+        to='rsform.Constituenta',
+        on_delete=CASCADE,
+        related_name='as_substitute'
+    )
+    transfer_term: BooleanField = BooleanField(
+        verbose_name='Перенос термина',
+        default=False
+    )
+
+    class Meta:
+        ''' Model metadata. '''
+        verbose_name = 'Отождествление синтеза'
+        verbose_name_plural = 'Таблицы отождествлений'
+
+    def __str__(self) -> str:
+        return f'{self.original.pk} -> {self.substitution.pk}'
diff --git a/rsconcept/backend/apps/oss/models/__init__.py b/rsconcept/backend/apps/oss/models/__init__.py
new file mode 100644
index 00000000..ad9d5148
--- /dev/null
+++ b/rsconcept/backend/apps/oss/models/__init__.py
@@ -0,0 +1,8 @@
+''' Django: Models. '''
+
+from apps.rsform.models import LibraryItem, LibraryItemType
+
+from .api_OSS import OperationSchema
+from .Argument import Argument
+from .Operation import Operation
+from .SynthesisSubstitution import SynthesisSubstitution
diff --git a/rsconcept/backend/apps/oss/models/api_OSS.py b/rsconcept/backend/apps/oss/models/api_OSS.py
new file mode 100644
index 00000000..5172c487
--- /dev/null
+++ b/rsconcept/backend/apps/oss/models/api_OSS.py
@@ -0,0 +1,58 @@
+''' Models: OSS API. '''
+from django.core.exceptions import ValidationError
+from django.db import transaction
+from django.db.models import QuerySet
+
+from apps.rsform.models import LibraryItem, LibraryItemType
+from shared import messages as msg
+
+from .Argument import Argument
+from .Operation import Operation, OperationType
+from .SynthesisSubstitution import SynthesisSubstitution
+
+
+class OperationSchema:
+    ''' Operations schema API. '''
+
+    def __init__(self, item: LibraryItem):
+        if item.item_type != LibraryItemType.OPERATION_SCHEMA:
+            raise ValueError(msg.libraryTypeUnexpected())
+        self.item = item
+
+    @staticmethod
+    def create(**kwargs) -> 'OperationSchema':
+        item = LibraryItem.objects.create(item_type=LibraryItemType.OPERATION_SCHEMA, **kwargs)
+        return OperationSchema(item=item)
+
+    def operations(self) -> QuerySet[Operation]:
+        ''' Get QuerySet containing all operations of current OSS. '''
+        return Operation.objects.filter(oss=self.item)
+
+    def arguments(self) -> QuerySet[Argument]:
+        ''' Operation arguments. '''
+        return Argument.objects.filter(operation__oss=self.item)
+
+    def substitutions(self) -> QuerySet[SynthesisSubstitution]:
+        ''' Operation arguments. '''
+        return SynthesisSubstitution.objects.filter(operation__oss=self.item)
+
+    @transaction.atomic
+    def create_operation(self, operation_type: OperationType, alias: str, **kwargs) -> Operation:
+        ''' Insert new operation. '''
+        if self.operations().filter(alias=alias).exists():
+            raise ValidationError(msg.aliasTaken(alias))
+        result = Operation.objects.create(
+            oss=self.item,
+            alias=alias,
+            operation_type=operation_type,
+            **kwargs
+        )
+        self.item.save()
+        result.refresh_from_db()
+        return result
+
+    @transaction.atomic
+    def delete_operation(self, operation: Operation):
+        ''' Delete operation. '''
+        operation.delete()
+        self.item.save()
diff --git a/rsconcept/backend/apps/oss/serializers/__init__.py b/rsconcept/backend/apps/oss/serializers/__init__.py
new file mode 100644
index 00000000..e844333f
--- /dev/null
+++ b/rsconcept/backend/apps/oss/serializers/__init__.py
@@ -0,0 +1,11 @@
+''' REST API: Serializers. '''
+
+from apps.rsform.serializers import LibraryItemSerializer
+
+from .data_access import (
+    ArgumentSerializer,
+    OperationCreateSerializer,
+    OperationSchemaSerializer,
+    OperationSerializer
+)
+from .schema_typing import NewOperationResponse
diff --git a/rsconcept/backend/apps/oss/serializers/data_access.py b/rsconcept/backend/apps/oss/serializers/data_access.py
new file mode 100644
index 00000000..b07135e4
--- /dev/null
+++ b/rsconcept/backend/apps/oss/serializers/data_access.py
@@ -0,0 +1,97 @@
+''' Serializers for persistent data manipulation. '''
+from typing import cast
+
+from rest_framework import serializers
+
+from apps.rsform.models import LibraryItem
+from apps.rsform.serializers import LibraryItemDetailsSerializer
+from shared import messages as msg
+
+from ..models import Argument, Operation, OperationSchema
+
+
+class OperationSerializer(serializers.ModelSerializer):
+    ''' Serializer: Operation data. '''
+    class Meta:
+        ''' serializer metadata. '''
+        model = Operation
+        fields = '__all__'
+        read_only_fields = ('id', 'oss')
+
+
+class ArgumentSerializer(serializers.ModelSerializer):
+    ''' Serializer: Operation data. '''
+    class Meta:
+        ''' serializer metadata. '''
+        model = Argument
+        fields = ('operation', 'argument')
+
+
+
+class OperationPositionSerializer(serializers.ModelSerializer):
+    ''' Serializer: Positions of a single operations in OSS. '''
+    class Meta:
+        ''' serializer metadata. '''
+        model = Operation
+        fields = 'id', 'position_x', 'position_y'
+
+    def validate(self, attrs):
+        oss = cast(LibraryItem, self.context['oss'])
+        operation = cast(Operation, self.instance)
+        if operation.oss != oss:
+            raise serializers.ValidationError({
+                'id': msg.operationNotOwned(oss.title)
+            })
+        return attrs
+
+
+class OperationCreateSerializer(serializers.ModelSerializer):
+    ''' Serializer: Constituenta creation. '''
+    positions = serializers.ListField(
+        child=OperationPositionSerializer(),
+        default=[]
+    )
+
+    class Meta:
+        ''' serializer metadata. '''
+        model = Operation
+        fields = \
+            'alias', 'operation_type', 'title', \
+            'comment', 'position_x', 'position_y'
+
+
+class OperationSchemaSerializer(serializers.ModelSerializer):
+    ''' Serializer: Detailed data for OSS. '''
+    items = serializers.ListField(
+        child=OperationSerializer()
+    )
+    graph = serializers.ListField(
+        child=ArgumentSerializer()
+    )
+
+    class Meta:
+        ''' serializer metadata. '''
+        model = LibraryItem
+        fields = '__all__'
+
+    def to_representation(self, instance: LibraryItem):
+        result = LibraryItemDetailsSerializer(instance).data
+        oss = OperationSchema(instance)
+        result['items'] = []
+        for operation in oss.operations():
+            result['items'].append(OperationSerializer(operation).data)
+        result['graph'] = []
+        for argument in oss.arguments():
+            result['graph'].append(ArgumentSerializer(argument).data)
+        result['substitutions'] = []
+        for substitution in oss.substitutions().values(
+            'original',
+            'original__alias',
+            'original__term_resolved',
+            'substitution',
+            'substitution__alias',
+            'substitution__term_resolved',
+            'transfer_term'
+        ):
+            result['substitutions'].append(substitution)
+        return result
diff --git a/rsconcept/backend/apps/oss/serializers/schema_typing.py b/rsconcept/backend/apps/oss/serializers/schema_typing.py
new file mode 100644
index 00000000..c0cf5b31
--- /dev/null
+++ b/rsconcept/backend/apps/oss/serializers/schema_typing.py
@@ -0,0 +1,10 @@
+''' Utility serializers for REST API schema - SHOULD NOT BE ACCESSED DIRECTLY. '''
+from rest_framework import serializers
+
+from .data_access import OperationSchemaSerializer, OperationSerializer
+
+
+class NewOperationResponse(serializers.Serializer):
+    ''' Serializer: Create operation response. '''
+    new_operation = OperationSerializer()
+    oss = OperationSchemaSerializer()
diff --git a/rsconcept/backend/apps/oss/urls.py b/rsconcept/backend/apps/oss/urls.py
new file mode 100644
index 00000000..5399e8d7
--- /dev/null
+++ b/rsconcept/backend/apps/oss/urls.py
@@ -0,0 +1,12 @@
+''' Routing: Operation Schema. '''
+from django.urls import include, path
+from rest_framework import routers
+
+from . import views
+
+library_router = routers.SimpleRouter(trailing_slash=False)
+library_router.register('rsforms', views.OssViewSet, 'RSForm')
+
+urlpatterns = [
+    path('', include(library_router.urls)),
+]
diff --git a/rsconcept/backend/apps/oss/views/__init__.py b/rsconcept/backend/apps/oss/views/__init__.py
new file mode 100644
index 00000000..d9319816
--- /dev/null
+++ b/rsconcept/backend/apps/oss/views/__init__.py
@@ -0,0 +1,2 @@
+''' REST API: Endpoint processors. '''
+from .oss import OssViewSet
diff --git a/rsconcept/backend/apps/oss/views/oss.py b/rsconcept/backend/apps/oss/views/oss.py
new file mode 100644
index 00000000..7d036e1f
--- /dev/null
+++ b/rsconcept/backend/apps/oss/views/oss.py
@@ -0,0 +1,110 @@
+''' Endpoints for OSS. '''
+from typing import cast
+
+from drf_spectacular.utils import extend_schema, extend_schema_view
+from rest_framework import generics
+from rest_framework import status as c
+from rest_framework import viewsets
+from rest_framework.decorators import action
+from rest_framework.request import Request
+from rest_framework.response import Response
+
+from shared import permissions
+
+from .. import models as m
+from .. import serializers as s
+
+
+@extend_schema(tags=['OSS'])
+@extend_schema_view()
+class OssViewSet(viewsets.GenericViewSet, generics.ListAPIView, generics.RetrieveAPIView):
+    ''' Endpoint: OperationSchema. '''
+    queryset = m.LibraryItem.objects.filter(item_type=m.LibraryItemType.OPERATION_SCHEMA)
+    serializer_class = s.LibraryItemSerializer
+
+    def _get_schema(self) -> m.OperationSchema:
+        return m.OperationSchema(cast(m.LibraryItem, self.get_object()))
+
+    def get_permissions(self):
+        ''' Determine permission class. '''
+        if self.action in [
+            'operation_create',
+            'operation_delete'
+        ]:
+            permission_list = [permissions.ItemEditor]
+        elif self.action in ['details']:
+            permission_list = [permissions.ItemAnyone]
+        else:
+            permission_list = [permissions.Anyone]
+        return [permission() for permission in permission_list]
+
+    @extend_schema(
+        summary='get operations data',
+        tags=['OSS'],
+        request=None,
+        responses={
+            c.HTTP_200_OK: s.OperationSchemaSerializer,
+            c.HTTP_404_NOT_FOUND: None
+        }
+    )
+    @action(detail=True, methods=['get'], url_path='details')
+    def details(self, request: Request, pk):
+        ''' Endpoint: Detailed OSS data. '''
+        serializer = s.OperationSchemaSerializer(cast(m.LibraryItem, self.get_object()))
+        return Response(
+            status=c.HTTP_200_OK,
+            data=serializer.data
+        )
+
+    @extend_schema(
+        summary='create operation',
+        tags=['OSS'],
+        request=s.OperationCreateSerializer(),
+        responses={
+            c.HTTP_201_CREATED: s.NewOperationResponse,
+            c.HTTP_403_FORBIDDEN: None
+        }
+    )
+    @action(detail=True, methods=['post'], url_path='operation-create')
+    def operation_create(self, request: Request, pk):
+        ''' Create new operation. '''
+        schema = self._get_schema()
+        serializer = s.OperationCreateSerializer(data=request.data)
+        serializer.is_valid(raise_exception=True)
+        data = serializer.validated_data
+        new_operation = schema.create_operation(*data)
+        schema.item.refresh_from_db()
+        response = Response(
+            status=c.HTTP_201_CREATED,
+            data={
+                'new_operation': s.OperationSerializer(new_operation).data,
+                'schema': s.OperationSchemaSerializer(schema.item).data
+            }
+        )
+        return response
+
+    # @extend_schema(
+    #     summary='delete operation',
+    #     tags=['RSForm'],
+    #     request=s.CstListSerializer,
+    #     responses={
+    #         c.HTTP_200_OK: s.RSFormParseSerializer,
+    #         c.HTTP_403_FORBIDDEN: None,
+    #         c.HTTP_404_NOT_FOUND: None
+    #     }
+    # )
+    # @action(detail=True, methods=['patch'], url_path='operation-delete')
+    # def operation_delete(self, request: Request, pk):
+    #     ''' Endpoint: Delete operation. '''
+    #     schema = self._get_schema()
+    #     serializer = s.CstListSerializer(
+    #         data=request.data,
+    #         context={'schema': schema.item}
+    #     )
+    #     serializer.is_valid(raise_exception=True)
+    #     schema.delete_cst(serializer.validated_data['items'])
+    #     schema.item.refresh_from_db()
+    #     return Response(
+    #         status=c.HTTP_200_OK,
+    #         data=s.RSFormParseSerializer(schema.item).data
+        # )
diff --git a/rsconcept/backend/apps/rsform/migrations/0008_alter_libraryitem_item_type.py b/rsconcept/backend/apps/rsform/migrations/0008_alter_libraryitem_item_type.py
new file mode 100644
index 00000000..ef7f844d
--- /dev/null
+++ b/rsconcept/backend/apps/rsform/migrations/0008_alter_libraryitem_item_type.py
@@ -0,0 +1,18 @@
+# Generated by Django 5.0.7 on 2024-07-17 09:51
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('rsform', '0007_location_and_flags'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='libraryitem',
+            name='item_type',
+            field=models.CharField(choices=[('rsform', 'Rsform'), ('oss', 'Operation Schema')], max_length=50, verbose_name='Тип'),
+        ),
+    ]
diff --git a/rsconcept/backend/apps/rsform/models/LibraryItem.py b/rsconcept/backend/apps/rsform/models/LibraryItem.py
index 70489f9c..d4daf365 100644
--- a/rsconcept/backend/apps/rsform/models/LibraryItem.py
+++ b/rsconcept/backend/apps/rsform/models/LibraryItem.py
@@ -9,6 +9,7 @@ from django.db.models import (
     DateTimeField,
     ForeignKey,
     Model,
+    QuerySet,
     TextChoices,
     TextField
 )
@@ -113,18 +114,18 @@ class LibraryItem(Model):
     def get_absolute_url(self):
         return f'/api/library/{self.pk}'
 
-    def subscribers(self) -> list[Subscription]:
+    def subscribers(self) -> list[User]:
         ''' Get all subscribers for this item. '''
         return [subscription.user for subscription in Subscription.objects.filter(item=self.pk).only('user')]
 
-    def versions(self) -> list[Version]:
-        ''' Get all Versions of this item. '''
-        return list(Version.objects.filter(item=self.pk).order_by('-time_create'))
-
-    def editors(self) -> list[Editor]:
+    def editors(self) -> list[User]:
         ''' Get all Editors of this item. '''
         return [item.editor for item in Editor.objects.filter(item=self.pk).only('editor')]
 
+    def versions(self) -> QuerySet[Version]:
+        ''' Get all Versions of this item. '''
+        return Version.objects.filter(item=self.pk).order_by('-time_create')
+
     @transaction.atomic
     def save(self, *args, **kwargs):
         subscribe = not self.pk and self.owner
diff --git a/rsconcept/backend/apps/rsform/models/api_RSForm.py b/rsconcept/backend/apps/rsform/models/api_RSForm.py
index dee2f7e6..9790f6b0 100644
--- a/rsconcept/backend/apps/rsform/models/api_RSForm.py
+++ b/rsconcept/backend/apps/rsform/models/api_RSForm.py
@@ -7,7 +7,8 @@ from django.core.exceptions import ValidationError
 from django.db import transaction
 from django.db.models import QuerySet
 
-from .. import messages as msg
+from shared import messages as msg
+
 from ..graph import Graph
 from .api_RSLanguage import (
     extract_globals,
diff --git a/rsconcept/backend/apps/rsform/models/api_RSLanguage.py b/rsconcept/backend/apps/rsform/models/api_RSLanguage.py
index d32a8c4e..26daa1bb 100644
--- a/rsconcept/backend/apps/rsform/models/api_RSLanguage.py
+++ b/rsconcept/backend/apps/rsform/models/api_RSLanguage.py
@@ -6,7 +6,8 @@ from typing import Set, Tuple, cast
 
 import pyconcept
 
-from .. import messages as msg
+from shared import messages as msg
+
 from .Constituenta import CstType
 
 _RE_GLOBALS = r'[XCSADFPT]\d+'  # cspell:disable-line
diff --git a/rsconcept/backend/apps/rsform/serializers/__init__.py b/rsconcept/backend/apps/rsform/serializers/__init__.py
index 12c2a4f5..897a27c9 100644
--- a/rsconcept/backend/apps/rsform/serializers/__init__.py
+++ b/rsconcept/backend/apps/rsform/serializers/__init__.py
@@ -22,6 +22,7 @@ from .data_access import (
     InlineSynthesisSerializer,
     LibraryItemBaseSerializer,
     LibraryItemCloneSerializer,
+    LibraryItemDetailsSerializer,
     LibraryItemSerializer,
     RSFormParseSerializer,
     RSFormSerializer,
diff --git a/rsconcept/backend/apps/rsform/serializers/basics.py b/rsconcept/backend/apps/rsform/serializers/basics.py
index cc21c83f..6a047d5b 100644
--- a/rsconcept/backend/apps/rsform/serializers/basics.py
+++ b/rsconcept/backend/apps/rsform/serializers/basics.py
@@ -4,7 +4,8 @@ from typing import cast
 from cctext import EntityReference, Reference, ReferenceType, Resolver, SyntacticReference
 from rest_framework import serializers
 
-from .. import messages as msg
+from shared import messages as msg
+
 from ..models import AccessPolicy, validate_location
 
 
diff --git a/rsconcept/backend/apps/rsform/serializers/data_access.py b/rsconcept/backend/apps/rsform/serializers/data_access.py
index 2861eff7..8ad9065c 100644
--- a/rsconcept/backend/apps/rsform/serializers/data_access.py
+++ b/rsconcept/backend/apps/rsform/serializers/data_access.py
@@ -7,7 +7,8 @@ from django.db import transaction
 from rest_framework import serializers
 from rest_framework.serializers import PrimaryKeyRelatedField as PKField
 
-from .. import messages as msg
+from shared import messages as msg
+
 from ..models import Constituenta, CstType, LibraryItem, RSForm, Version
 from .basics import CstParseSerializer
 from .io_pyconcept import PyConceptAdapter
diff --git a/rsconcept/backend/apps/rsform/serializers/io_files.py b/rsconcept/backend/apps/rsform/serializers/io_files.py
index 00065236..afc59108 100644
--- a/rsconcept/backend/apps/rsform/serializers/io_files.py
+++ b/rsconcept/backend/apps/rsform/serializers/io_files.py
@@ -2,7 +2,8 @@
 from django.db import transaction
 from rest_framework import serializers
 
-from .. import messages as msg
+from shared import messages as msg
+
 from ..models import Constituenta, LibraryItem, RSForm
 from ..utils import fix_old_references
 
diff --git a/rsconcept/backend/apps/rsform/serializers/io_pyconcept.py b/rsconcept/backend/apps/rsform/serializers/io_pyconcept.py
index 1aa79820..0b767b62 100644
--- a/rsconcept/backend/apps/rsform/serializers/io_pyconcept.py
+++ b/rsconcept/backend/apps/rsform/serializers/io_pyconcept.py
@@ -4,7 +4,8 @@ from typing import Optional, Union, cast
 
 import pyconcept
 
-from .. import messages as msg
+from shared import messages as msg
+
 from ..models import RSForm
 
 
diff --git a/rsconcept/backend/apps/rsform/tests/s_views/t_cctext.py b/rsconcept/backend/apps/rsform/tests/s_views/t_cctext.py
index 33c91811..a766beb3 100644
--- a/rsconcept/backend/apps/rsform/tests/s_views/t_cctext.py
+++ b/rsconcept/backend/apps/rsform/tests/s_views/t_cctext.py
@@ -1,7 +1,7 @@
 ''' Testing views '''
 from cctext import split_grams
 
-from ..EndpointTester import EndpointTester, decl_endpoint
+from shared.EndpointTester import EndpointTester, decl_endpoint
 
 
 class TestNaturalLanguageViews(EndpointTester):
diff --git a/rsconcept/backend/apps/rsform/tests/s_views/t_constituents.py b/rsconcept/backend/apps/rsform/tests/s_views/t_constituents.py
index a19cfc49..c5dc9f7e 100644
--- a/rsconcept/backend/apps/rsform/tests/s_views/t_constituents.py
+++ b/rsconcept/backend/apps/rsform/tests/s_views/t_constituents.py
@@ -1,7 +1,6 @@
 ''' Testing API: Constituents. '''
 from apps.rsform.models import Constituenta, CstType, RSForm
-
-from ..EndpointTester import EndpointTester, decl_endpoint
+from shared.EndpointTester import EndpointTester, decl_endpoint
 
 
 class TestConstituentaAPI(EndpointTester):
diff --git a/rsconcept/backend/apps/rsform/tests/s_views/t_library.py b/rsconcept/backend/apps/rsform/tests/s_views/t_library.py
index fcd92781..2be20e52 100644
--- a/rsconcept/backend/apps/rsform/tests/s_views/t_library.py
+++ b/rsconcept/backend/apps/rsform/tests/s_views/t_library.py
@@ -11,9 +11,8 @@ from apps.rsform.models import (
     RSForm,
     Subscription
 )
-
-from ..EndpointTester import EndpointTester, decl_endpoint
-from ..testing_utils import response_contains
+from shared.EndpointTester import EndpointTester, decl_endpoint
+from shared.testing_utils import response_contains
 
 
 class TestLibraryViewset(EndpointTester):
diff --git a/rsconcept/backend/apps/rsform/tests/s_views/t_operations.py b/rsconcept/backend/apps/rsform/tests/s_views/t_operations.py
index 0cd9867f..67d94ad0 100644
--- a/rsconcept/backend/apps/rsform/tests/s_views/t_operations.py
+++ b/rsconcept/backend/apps/rsform/tests/s_views/t_operations.py
@@ -1,7 +1,6 @@
 ''' Testing API: Operations. '''
 from apps.rsform.models import Constituenta, CstType, RSForm
-
-from ..EndpointTester import EndpointTester, decl_endpoint
+from shared.EndpointTester import EndpointTester, decl_endpoint
 
 
 class TestInlineSynthesis(EndpointTester):
diff --git a/rsconcept/backend/apps/rsform/tests/s_views/t_rsforms.py b/rsconcept/backend/apps/rsform/tests/s_views/t_rsforms.py
index ac385761..19ea4153 100644
--- a/rsconcept/backend/apps/rsform/tests/s_views/t_rsforms.py
+++ b/rsconcept/backend/apps/rsform/tests/s_views/t_rsforms.py
@@ -15,9 +15,8 @@ from apps.rsform.models import (
     LocationHead,
     RSForm
 )
-
-from ..EndpointTester import EndpointTester, decl_endpoint
-from ..testing_utils import response_contains
+from shared.EndpointTester import EndpointTester, decl_endpoint
+from shared.testing_utils import response_contains
 
 
 class TestRSFormViewset(EndpointTester):
diff --git a/rsconcept/backend/apps/rsform/tests/s_views/t_rslang.py b/rsconcept/backend/apps/rsform/tests/s_views/t_rslang.py
index 910e852e..03143bf7 100644
--- a/rsconcept/backend/apps/rsform/tests/s_views/t_rslang.py
+++ b/rsconcept/backend/apps/rsform/tests/s_views/t_rslang.py
@@ -1,5 +1,5 @@
 ''' Testing views '''
-from ..EndpointTester import EndpointTester, decl_endpoint
+from shared.EndpointTester import EndpointTester, decl_endpoint
 
 
 class TestRSLanguageViews(EndpointTester):
diff --git a/rsconcept/backend/apps/rsform/tests/s_views/t_versions.py b/rsconcept/backend/apps/rsform/tests/s_views/t_versions.py
index d2b273a7..788b2aec 100644
--- a/rsconcept/backend/apps/rsform/tests/s_views/t_versions.py
+++ b/rsconcept/backend/apps/rsform/tests/s_views/t_versions.py
@@ -7,8 +7,7 @@ from zipfile import ZipFile
 from rest_framework import status
 
 from apps.rsform.models import Constituenta, RSForm
-
-from ..EndpointTester import EndpointTester, decl_endpoint
+from shared.EndpointTester import EndpointTester, decl_endpoint
 
 
 class TestVersionViews(EndpointTester):
diff --git a/rsconcept/backend/apps/rsform/views/constituents.py b/rsconcept/backend/apps/rsform/views/constituents.py
index cd772f1c..195a099c 100644
--- a/rsconcept/backend/apps/rsform/views/constituents.py
+++ b/rsconcept/backend/apps/rsform/views/constituents.py
@@ -2,8 +2,9 @@
 from drf_spectacular.utils import extend_schema, extend_schema_view
 from rest_framework import generics
 
+from shared import permissions
+
 from .. import models as m
-from .. import permissions
 from .. import serializers as s
 
 
diff --git a/rsconcept/backend/apps/rsform/views/library.py b/rsconcept/backend/apps/rsform/views/library.py
index 4ce592af..491a2db5 100644
--- a/rsconcept/backend/apps/rsform/views/library.py
+++ b/rsconcept/backend/apps/rsform/views/library.py
@@ -13,8 +13,9 @@ from rest_framework.decorators import action
 from rest_framework.request import Request
 from rest_framework.response import Response
 
+from shared import permissions
+
 from .. import models as m
-from .. import permissions
 from .. import serializers as s
 
 
diff --git a/rsconcept/backend/apps/rsform/views/rsforms.py b/rsconcept/backend/apps/rsform/views/rsforms.py
index 65136f53..6d589075 100644
--- a/rsconcept/backend/apps/rsform/views/rsforms.py
+++ b/rsconcept/backend/apps/rsform/views/rsforms.py
@@ -13,9 +13,10 @@ from rest_framework.decorators import action, api_view
 from rest_framework.request import Request
 from rest_framework.response import Response
 
-from .. import messages as msg
+from shared import messages as msg
+from shared import permissions
+
 from .. import models as m
-from .. import permissions
 from .. import serializers as s
 from .. import utils
 
diff --git a/rsconcept/backend/apps/rsform/views/versions.py b/rsconcept/backend/apps/rsform/views/versions.py
index a5e69c9a..4aedbbb8 100644
--- a/rsconcept/backend/apps/rsform/views/versions.py
+++ b/rsconcept/backend/apps/rsform/views/versions.py
@@ -10,8 +10,9 @@ from rest_framework.decorators import action, api_view, permission_classes
 from rest_framework.request import Request
 from rest_framework.response import Response
 
+from shared import permissions
+
 from .. import models as m
-from .. import permissions
 from .. import serializers as s
 from .. import utils
 
diff --git a/rsconcept/backend/apps/users/messages.py b/rsconcept/backend/apps/users/messages.py
deleted file mode 100644
index f142f37a..00000000
--- a/rsconcept/backend/apps/users/messages.py
+++ /dev/null
@@ -1,14 +0,0 @@
-''' Utility: Text messages. '''
-# pylint: skip-file
-
-
-def passwordAuthFailed():
-    return 'Неизвестное сочетание имени пользователя (email) и пароля'
-
-
-def passwordsNotMatch():
-    return 'Введенные пароли не совпадают'
-
-
-def emailAlreadyTaken():
-    return 'Пользователь с данным email уже существует'
diff --git a/rsconcept/backend/apps/users/serializers.py b/rsconcept/backend/apps/users/serializers.py
index d7ed3dd6..31f9c2e0 100644
--- a/rsconcept/backend/apps/users/serializers.py
+++ b/rsconcept/backend/apps/users/serializers.py
@@ -4,8 +4,8 @@ from django.contrib.auth.password_validation import validate_password
 from rest_framework import serializers
 
 from apps.rsform.models import Editor, Subscription
+from shared import messages as msg
 
-from . import messages as msg
 from . import models
 
 
diff --git a/rsconcept/backend/apps/users/tests/t_views.py b/rsconcept/backend/apps/users/tests/t_views.py
index c003a385..0c7d594e 100644
--- a/rsconcept/backend/apps/users/tests/t_views.py
+++ b/rsconcept/backend/apps/users/tests/t_views.py
@@ -1,8 +1,8 @@
 ''' Testing API: users. '''
 from rest_framework.test import APIClient, APITestCase
 
-from apps.rsform.tests.EndpointTester import EndpointTester, decl_endpoint
 from apps.users.models import User
+from shared.EndpointTester import EndpointTester, decl_endpoint
 
 
 class TestUserAPIViews(EndpointTester):
diff --git a/rsconcept/backend/project/settings.py b/rsconcept/backend/project/settings.py
index 2d2f0de2..5357c542 100644
--- a/rsconcept/backend/project/settings.py
+++ b/rsconcept/backend/project/settings.py
@@ -74,6 +74,7 @@ INSTALLED_APPS = [
 
     'apps.users',
     'apps.rsform',
+    'apps.oss',
 
     'drf_spectacular',
     'drf_spectacular_sidecar',
diff --git a/rsconcept/backend/apps/rsform/tests/EndpointTester.py b/rsconcept/backend/shared/EndpointTester.py
similarity index 100%
rename from rsconcept/backend/apps/rsform/tests/EndpointTester.py
rename to rsconcept/backend/shared/EndpointTester.py
diff --git a/rsconcept/backend/shared/__init__.py b/rsconcept/backend/shared/__init__.py
new file mode 100644
index 00000000..6246926d
--- /dev/null
+++ b/rsconcept/backend/shared/__init__.py
@@ -0,0 +1 @@
+''' Utilities shared between applications. '''
diff --git a/rsconcept/backend/apps/rsform/messages.py b/rsconcept/backend/shared/messages.py
similarity index 79%
rename from rsconcept/backend/apps/rsform/messages.py
rename to rsconcept/backend/shared/messages.py
index 9469bbdb..dae5328e 100644
--- a/rsconcept/backend/apps/rsform/messages.py
+++ b/rsconcept/backend/shared/messages.py
@@ -6,6 +6,10 @@ def constituentaNotOwned(title: str):
     return f'Конституента не принадлежит схеме: {title}'
 
 
+def operationNotOwned(title: str):
+    return f'Операция не принадлежит схеме: {title}'
+
+
 def substitutionNotInList():
     return 'Отождествляемая конституента отсутствует в списке'
 
@@ -64,3 +68,15 @@ def constituentaNoStructure():
 
 def missingFile():
     return 'Отсутствует прикрепленный файл'
+
+
+def passwordAuthFailed():
+    return 'Неизвестное сочетание имени пользователя (email) и пароля'
+
+
+def passwordsNotMatch():
+    return 'Введенные пароли не совпадают'
+
+
+def emailAlreadyTaken():
+    return 'Пользователь с данным email уже существует'
diff --git a/rsconcept/backend/apps/rsform/permissions.py b/rsconcept/backend/shared/permissions.py
similarity index 80%
rename from rsconcept/backend/apps/rsform/permissions.py
rename to rsconcept/backend/shared/permissions.py
index 7a163dec..a614cf52 100644
--- a/rsconcept/backend/apps/rsform/permissions.py
+++ b/rsconcept/backend/shared/permissions.py
@@ -11,16 +11,24 @@ from rest_framework.permissions import \
 from rest_framework.request import Request
 from rest_framework.views import APIView
 
-from . import models as m
+from apps.rsform.models import (
+    AccessPolicy,
+    Constituenta,
+    Editor,
+    LibraryItem,
+    Subscription,
+    Version
+)
+from apps.users.models import User
 
 
-def _extract_item(obj: Any) -> m.LibraryItem:
-    if isinstance(obj, m.LibraryItem):
+def _extract_item(obj: Any) -> LibraryItem:
+    if isinstance(obj, LibraryItem):
         return obj
-    elif isinstance(obj, m.Constituenta):
-        return cast(m.LibraryItem, obj.schema)
-    elif isinstance(obj, (m.Version, m.Subscription, m.Editor)):
-        return cast(m.LibraryItem, obj.item)
+    elif isinstance(obj, Constituenta):
+        return cast(LibraryItem, obj.schema)
+    elif isinstance(obj, (Version, Subscription, Editor)):
+        return cast(LibraryItem, obj.item)
     raise PermissionDenied({
         'message': 'Invalid type error. Please contact developers',
         'object_id': obj.id
@@ -60,10 +68,10 @@ class ItemEditor(ItemOwner):
         if request.user.is_anonymous:
             return False
         item = _extract_item(obj)
-        if m.Editor.objects.filter(
+        if Editor.objects.filter(
             item=item,
-            editor=cast(m.User, request.user)
-        ).exists() and item.access_policy != m.AccessPolicy.PRIVATE:
+            editor=cast(User, request.user)
+        ).exists() and item.access_policy != AccessPolicy.PRIVATE:
             return True
         return super().has_object_permission(request, view, obj)
 
@@ -76,7 +84,7 @@ class ItemAnyone(ItemEditor):
 
     def has_object_permission(self, request: Request, view: APIView, obj: Any) -> bool:
         item = _extract_item(obj)
-        if item.access_policy == m.AccessPolicy.PUBLIC:
+        if item.access_policy == AccessPolicy.PUBLIC:
             return True
         return super().has_object_permission(request, view, obj)
 
diff --git a/rsconcept/backend/apps/rsform/tests/testing_utils.py b/rsconcept/backend/shared/testing_utils.py
similarity index 100%
rename from rsconcept/backend/apps/rsform/tests/testing_utils.py
rename to rsconcept/backend/shared/testing_utils.py