feat: added mlscore app

solution/services/backend/apps/mlscore/admin.py

@@ -0,0 +1,16 @@
+from django.contrib import admin
+
+from apps.mlscore.models import Mlscore
+
+
+class MlscoreAdmin(admin.ModelAdmin):
+    readonly_fields = (Mlscore.id.field.name,)
+    fields = (
+        Mlscore.id.field.name,
+        Mlscore.advertiser.field.name,
+        Mlscore.client.field.name,
+        Mlscore.score.field.name,
+    )
+
+
+admin.site.register(Mlscore, MlscoreAdmin)

solution/services/backend/apps/mlscore/apps.py

@@ -0,0 +1,6 @@
+from django.apps import AppConfig
+
+
+class MlscoreConfig(AppConfig):
+    name = "apps.mlscore"
+    label = "mlscore"

solution/services/backend/apps/mlscore/migrations/0001_initial.py

@@ -0,0 +1,30 @@
+# Generated by Django 5.1.6 on 2025-02-14 16:40
+
+import django.db.models.deletion
+import uuid
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        ('advertiser', '0001_initial'),
+        ('client', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Mlscore',
+            fields=[
+                ('id', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
+                ('score', models.PositiveIntegerField()),
+                ('advertiser', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='mlscores', to='advertiser.advertiser')),
+                ('client', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='mlscores', to='client.client')),
+            ],
+            options={
+                'unique_together': {('advertiser', 'client')},
+            },
+        ),
+    ]

solution/services/backend/apps/mlscore/models.py

@@ -0,0 +1,28 @@
+from django.db import models
+
+from apps.advertiser.models import Advertiser
+from apps.client.models import Client
+from apps.core.models import BaseModel
+
+
+class Mlscore(BaseModel):
+    advertiser = models.ForeignKey(
+        Advertiser,
+        on_delete=models.CASCADE,
+        related_name="mlscores",
+    )
+    client = models.ForeignKey(
+        Client,
+        on_delete=models.CASCADE,
+        related_name="mlscores",
+    )
+    score = models.PositiveIntegerField()
+
+    def __str__(self) -> str:
+        return f"{self.advertiser.name} | {self.client.login}"
+
+    class Meta:
+        unique_together = (
+            "advertiser",
+            "client",
+        )

solution/services/backend/apps/mlscore/tests.py

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+from django.test import TestCase
+from django.db.utils import IntegrityError
+from django.core.exceptions import ValidationError
+from config.errors import ConflictError
+from apps.advertiser.models import Advertiser
+from apps.client.models import Client
+from apps.mlscore.models import Mlscore
+
+
+class MlscoreModelTest(TestCase):
+    def setUp(self):
+        self.advertiser = Advertiser.objects.create(name="Test Advertiser")
+        self.client_obj = Client.objects.create(
+            login="test_client",
+            age=25,
+            location="test_location",
+            gender=Client.GenderChoices.MALE,
+        )
+
+    def test_create_mlscore(self):
+        mlscore = Mlscore.objects.create(
+            advertiser=self.advertiser,
+            client=self.client_obj,
+            score=95,
+        )
+
+        self.assertEqual(mlscore.score, 95)
+        self.assertEqual(str(mlscore), "Test Advertiser | test_client")
+
+    def test_mlscore_unique_together_constraint(self):
+        Mlscore.objects.create(
+            advertiser=self.advertiser,
+            client=self.client_obj,
+            score=80,
+        )
+
+        with self.assertRaises(ConflictError):
+            Mlscore.objects.create(
+                advertiser=self.advertiser,
+                client=self.client_obj,
+                score=85,
+            )
+
+    def test_delete_advertiser_cascades(self):
+        mlscore = Mlscore.objects.create(
+            advertiser=self.advertiser,
+            client=self.client_obj,
+            score=90,
+        )
+        self.advertiser.delete()
+
+        self.assertFalse(Mlscore.objects.filter(id=mlscore.id).exists())
+
+    def test_delete_client_cascades(self):
+        mlscore = Mlscore.objects.create(
+            advertiser=self.advertiser,
+            client=self.client_obj,
+            score=90,
+        )
+        self.client_obj.delete()
+
+        self.assertFalse(Mlscore.objects.filter(id=mlscore.id).exists())
+
+    def test_score_positive_integer_constraint(self):
+        with self.assertRaises(ValidationError):
+            Mlscore.objects.create(
+                advertiser=self.advertiser,
+                client=self.client_obj,
+                score=-5,
+            )